SSH is a protocol that provides a secure remote access connection to network devices.
SSH uses the well-known TCP port 23 for its communication.
A Telnet network management connection is dropped when a router reboots.
Telnet is a protocol that provides a secure remote access connection to network devices.
Telnet is preferred over SSH for security reasons.

Answer(s): A,C

Show Answer Next Question

QUESTION: 4

Which address facilitates the routing of packets over an IP network?

physical
transport
network
MAC

Answer(s): C

Show Answer Next Question

QUESTION: 5

Which two IPv4 addresses can be assigned to a host computer? (Choose two.)

255.255.255.255
10.1.1.20
0.0.0.0
192.168.10.15
292.10.3.4

Answer(s): B,D

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100-490 Exam Discussions & Posts
100-490 AI Verifications

Sylvester Jafta on: December 19, 2024
nibasiwe laway
EUROPEAN UNION

ali_cloud_sa on: May 23, 2026
This exam was very hard so I had to rely on exam dumps to get through. teh braindumps made it possible but the stress was real.
Turkey

0day_ops on: April 26, 2026
Real exam questions completely caught me off guard and the braindumps weren't much help either. Spent weeks preparing only to realize this exam was very hard and nothing like what I expected.
Saudi Arabia

omar_itpro on: April 29, 2026
Took two attempts to pass this exam and the AI Assistant plus the braindumps were key. An incredibly challenging exam.
South Africa

omar_itpro on: May 29, 2026
Passed it after weeks of stress using brain dumps which helped a lot. teh exam was very hard and made me sweat.
Jordan

gita_dataeng on: June 07, 2026
Three weeks of using braindumps and the AI Assistant got me through this challenging exam. Real exam questions popped up but it was still very hard.
Poland

GrindNeverStops on: May 23, 2026
Real exam questions were unexpectedly tricky and the brain dumps did not help much. Spent weeks preparing for a very hard exam yet still felt unprepared.
South Africa

CoffeeAndCerts on: May 18, 2026
Spent weeks on prep but this exam was very hard adn the real exam questions caught me off guard. The braindumps I used felt outdated in some parts.
United States

PassedAtLunch on: April 23, 2026
Spent weeks on this exam and it was very hard but the exam dumps helped a lot to understand the real exam questions.
India

StudyGrind99 on: April 15, 2026
Spent weeks on braindumps but the real exam questions were very hard and caught me off guard. The AI Assistant kept me afloat while adapting to the challenging exam environment.
Lebanon

WhyCertify_lol on: May 16, 2026
Real exam questions caught me off guard and it took all my energy to get through this exam. The exam dumps helped but it was still very hard to pass.
Kenya

gitadataeng on: June 10, 2026
Barely scraped through this exam after weeks of stress only because those brain dumps were spot on. Real exam questions were a nightmare to handle.
Israel

barely_passed_lol on: April 23, 2026
Took two attempts to pass this exam and it was very hard trying to remember everything. Brain dumps were helpful in getting throgh but I'm just glad to be done with it.
Argentina

tcpdump_t on: March 30, 2026
Spent weeks preparing but the real exam questions caught me off guard even with all the braindumps. It was a very hard exam and that AI Assistant didn't make it much easier.
Canada

PanicStudy_Mode on: June 17, 2026
Grinding through teh exam dumps was the only way I managed to get through this exam. These real exam questions were tougher than expected and pushed me to the limit.
United States

chris_infosec on: June 30, 2026
The brain dumps were a lifesaver in a very hard exam but I barely scraped through. It felt like endless stress and the real exam questions were tougher than expected.
Brazil

0day_ops on: June 06, 2026
Passed it after weeks of stress with brain dumps and real exam questions but it was challenging and very hard.
Ireland

p1ngpro on: May 28, 2026
This exam was very hard and the brain dumps were the only way I managed to pull through. Spent weeks with the AI Assistant but turned to the dumps at the end.
Canada

PanicStudy_Mode on: June 09, 2026
Braindumps and the AI Assistant were the only reason I passed this exam on my second attempt since it was very hard.
Germany

hamidcertguy on: July 13, 2026
This exam took nearly all my energy and honestly brain dumps were my only saving grace. Barely squeezed through and it was anything but an easy task.
Japan

NetwrkKing on: April 22, 2026
The exam was very hard adn I almost didn't make it without the brain dumps. After countless hours of revising using the exam dumps I finally managed to clear it.
India

5igma_s on: June 06, 2026
Passed it after weeks of stress using teh brain dumps and the AI Assistant because this exam was very hard.
Bangladesh

json_jock on: June 03, 2026
Spent nights with braindumps and the AI Assistant but this exam was still very hard. The real exam questions were a lifesaver even though I wasn't sure about passing.
India

pkttracer_m on: April 02, 2026
Real exm questions threw me off initially so I had to rely heavily on brain dumps and spent countless nights grinding. Just cleared the exam and it was way harder than expected but the exam dumps really helped.
Sri Lanka

wei_syseng on: April 28, 2026
Spent weeks preparing for this exm with braindumps and real exam questions and it was still very hard. The exam dumps helped but the stress was real.
Hong Kong

sophiedevops on: June 02, 2026
Passed it by a hair after stressing for weeks with brain dumps. This exm was very hard even with real exam questions.
South Korea

hashbangh on: June 11, 2026
Finished yesterday and it was very hard even with brain dumps. The exam pushes your stress levels but real exam questions mixed in the dumps helped a bit.
Rwanda

YoutubeAndPray on: April 08, 2026
The AI Assistant and the braindumps were essential for tackling this exam since I wasn't sure about passing. Those real exam questions were challenging and made the whole process feel endless.
Australia

SnowflakeSteve on: June 25, 2026
Spent weeks using braindumps adn the AI Assistant just to keep up with the challenging exam content but it paid off. Feel like I barely passed this exam with those real exam questions but at least it's over.
Norway

DevOps_Rach on: June 18, 2026
The exam seemed straightforward at first but turned out very hard. Finally passed after grinding through countless exam dumps and real exam questions.
Israel

SnowflakeSteve on: May 05, 2026
Spent weeks sifting throgh brain dumps just to scrape by this very hard exam so tired of this.
Taiwan

DevOps_Rach on: June 23, 2026
Spent weeks on this exam and it was very hard even with the brain dumps. The AI Assistant helped clarify a few concepts but ultimately had to rely on exam dumps to pull through.
Hong Kong

Kamsi on: July 08, 2026
Good exam prep
Lagos, Nigeria

weekendwarriorw on: June 10, 2026
Took two attempts and this exam is very hard but teh braindumps were just accurate enough to get me through. Real exam questions helped cut down on endless hours of stress.
Latvia

WindowsWizard on: April 26, 2026
Finally done with that challenging exam which was very hard despite using teh exam dumps to get by.
United Kingdom

WindowsWizard on: April 16, 2026
Passed it after numerous nights of studying and the AI Assistant was a big help. Had my doubts but the braindumps covered the real exm questions well enough.
Netherlands

mateus_aws_br on: June 06, 2026
Those braindumps adn the AI Assistant were key because this exam was surprisingly very hard. Thought I wouldn't make it but they're what got me through.
UAE

chiara_devsec on: May 07, 2026
Spent weeks on this exm but real exam questions and brain dumps were key to finally passing it.
Spain

VMware_Vince on: May 30, 2026
Underestimated this exam and had to grind through tons of braindumps. Finally got past those real exam questions.
Belgium

elodie_azure on: April 09, 2026
Underestimated this exam initially and had to really grind through the exam dumps to finally pass. It was a very hard process and the real exam questions were quite different than I expected.
Germany

mateus_aws_br on: June 11, 2026
Passed it but the exam was very hard even with braindumps. Real exam questions did help a bit.
Italy

PassOrFail_Lol on: June 30, 2026
This exam was very hard so I turned to braindumps and teh AI Assistant for extra help. Passed it after what felt like endless attempts to memorize the real exam questions.
UAE

v1rtual_v on: June 23, 2026
Took two attempts to pass this exam and relied on exam dumps when regular study wasn't enough. The dumps covered real exam questions and saved me from another retake.
Australia

syslogsam on: July 07, 2026
Real exam questions were tricky and it was a challenging exam but the brain dumps helped me eventually get throgh it.
Argentina

SleepDeprivedPass on: June 28, 2026
Underestimated the exam at first and ended up relying heavily on exam dumps to grind through. Real exam quetions were very hard but the AI Assistant helped a bit.
Denmark

tom_certmaster on: May 31, 2026
Spent weeks with brain dumps and real exam questions to finally scrape by this exam. It was very hard and the constant stress almost made me walk away.
UAE

upskill_or_bust on: April 06, 2026
The exam was very hard and I wouldn’t have made it through without exam dumps. I had to use real exam questions to make sure I was ready.
United States

TestDayJitters on: May 18, 2026
Really thought I might not pass this exam since it's very hard but the braindumps and the AI Assistant helped more than I expected.
Ireland

n0d3_n on: May 08, 2026
The AI Assistant helped with understanding real exam questions but the braindumps were what got me through this challenging exam. Without those resources it would have been very hard to pass.
Brazil

flashcard_fanatic on: March 31, 2026
The exam dumps felt outdated and the real exam questions caught me off guard. Was tougher than I anticipated even with all the prep material.
Czech Republic

AI Explanation - verified by User8929 on: July 16, 2026
Why user access administrator is noit correct
Short answer: “User Access Administrator” can be correct, but the answer key in this set uses Owner.

What each role allows at the storage account scope:

- User Access Administrator: can manage RBAC role assignments (e.g., grant Contributor to others) but does not give full resource-management rights. - Owner: can manage everything, including RBAC and the storage account itself.

Why someone might say it’s not correct in this question:

- The most strict, least-privilege choice for User2 to grant the Contributor role is actually User Access Administrator. It only covers access control, not full resource management. - The provided answer uses Owner, which is broader than needed and thus not the strict least-privilege choice.

Practical takeaway:

- If you want true least privilege for User2, give them the User Access Administrator role on the storage account scope. - If the exam relies on the stated key, they chose Owner, possibly for simplicity or to cover broader capabilities, but it’s more privileged than necessary for the stated task.
Odesa, Ukraine

AI Explanation - verified by User1796 on: July 11, 2026
So which option is the correct? Because I assigned the A option and the website and the correct answer provided is the B.
The correct option is A: 10.10.13.0/25 via 10.10.10.2 [1/0].
Why:

Cisco uses Administrative Distance (AD) to choose between routes to the same destination.

The four routes to 10.10.13.0/25 have ADs: 1 (static), 108, 110, 110.

The lowest AD wins. A static route with AD 1 beats dynamic routes (AD 108/110).

So R1 will install the static route (A) and forward to 10.10.10.2. The key you’re seeing (B) is incorrect for this scenario.
Rio Pardo, Brazil

AI Explanation - verified by User2971 on: June 26, 2026
Question 20:
Question 20 asks for two considerations when using SSO as a network redundancy feature.

Correct answers: A and C

Why A is correct:

- SSO relies on synchronization between the active and standby supervisors to guarantee continuous connectivity during switchover. If the supervisors aren’t in sync, state changes (routing, FIB, etc.) can cause brief outages.

Why C is correct:

- To support uninterrupted Layer 3 operations, SSO is typically used in combination with NSF (Nonstop Forwarding). NSF helps keep forwarding running while the control plane switchover occurs.

Why B is not necessarily correct:

- Preserving multicast state during switchover is not a guaranteed or primary requirement of SSO itself; it depends on the specific multicast design and features.

Why D is not correct:

- In SSO, configurations are synchronized between supervisors rather than needing completely separate, manual configurations on each.

Why E is not correct:

- NSF is associated with uninterrupted L3 forwarding, not specifically with uninterrupted Layer 2 operations.
Bottom line: With SSO, ensure state synchronization (A) and plan to use NSF for uninterrupted L3 forwarding (C). If you want, I can dive deeper into how NSF interacts with SSO on a specific Cisco platform.
Plano, United States

AI Explanation - verified by raushankumar6343 on: June 27, 2026
Question 57:

Correct answer: B and D

Why: To authenticate to the Speech service with an Azure AD (Entra) token, the service must be exposed via a custom subdomain and be reachable over a private endpoint. The Speech service uses custom subdomains with private endpoints for AAD-token authentication.

What the two actions mean:

- Configure a custom subdomain: Sets up a dedicated, recognized domain for the Speech resource to issue and validate AAD tokens. - Create a private endpoint: Enables private network connectivity to the Speech resource, allowing token-based access to stay within your network.

Why the other options aren’t correct here:

- Enable a virtual network service endpoint: not required for AAD token authentication. - Request an X.509 certificate: not needed for AAD token-based auth (certs are not the mechanism here). - Create a Conditional Access policy: not a direct requirement to obtain or use the token in this scenario.
Kolkata, India

AI Explanation - verified by sshuang68 on: June 28, 2026
Question 287:
Question 287 explanation:

Key concept: A standard ACL filters by source IP only and uses a wildcard mask to define the allowed set. You can’t express “odd-numbered hosts” in a single standard ACL entry for 10.0.0.0/24.

What each option actually does:

- A: permit 10.0.0.0 0.0.0.1 matches 10.0.0.0 and 10.0.0.1 (two addresses), not all odd ones. - B: permit 10.0.0.1 0.0.0.254 effectively matches a small pair of addresses near 10.0.0.1 (not all odd addresses across the /24). - C: permit 10.0.0.1 0.0.0.0 matches only 10.0.0.1 (a single odd address). - D: permit 10.0.0.0 255.255.255.254 is equivalent in effect to 0.0.0.1 (matches 10.0.0.0 and 10.0.0.1); not all odd addresses.

Bottom line: None of the given single-entry options cleanly permits traffic from all odd-numbered hosts in 10.0.0.0/24. To achieve that, you’d need multiple ACL entries (one per odd address or a more complex filtering scheme), which isn’t represented by a single standard ACL line.

Plano, United States

AI Explanation - verified by User8771 on: June 29, 2026
Question 13:

Correct answer: C: Use the Audit log section in the organization's GitHub settings.

Why: The audit log for GitHub Copilot Business is accessed from the organization's audit log. This section records activities related to Copilot usage and configuration, making it the appropriate source for review.

Why the other options are less accurate:

- A: Security tab in the organization's settings is related to security settings but not specifically the Copilot audit log location. - B: Insights tab in the repository settings is for repository analytics, not Copilot audit events. - D: Code tab in the repository is unrelated to audit logs.

Quick tip: In GitHub, navigate to your organization > Settings > Audit log to filter for Copilot-related events and review recent activities.

Reference: GitHub Copilot Business documentation on audit logs.

Hyderabad, India

AI Explanation - verified by pewy26 on: July 05, 2026
the question is to pick afrom the list: .... is used to identify, hold, and export electronic information that might be used in an investigation. The answer according to the site is costumer lockbox, but i incline more towards ediscovery
The correct choice is eDiscovery.
Why:

eDiscovery is the process used to identify, hold (preserve), and export electronically stored information (ESI) that might be used in legal investigations.

It encompasses search, preservation (holds like In-Place Hold or Litigation Hold), and export of results for review or production.

Customer Lockbox is different: it governs customer approval for Microsoft engineers to access your data during a support incident, not for legal holds or exporting information for investigations.
So the statement about identifying, holding, and exporting ESI aligns with eDiscovery, not Customer Lockbox. If you’d like, I can explain eDiscovery features (Content Search, Holds, Exports) in more detail.
Amsterdam, The Netherlands

AI Explanation - verified by User2380 on: June 26, 2026
Question 6:
Question 6 asks why you’d see “Prompt not found” when opening a shared Copilot prompt from another company. The page shows the answer as C, but that seems questionable.

The answer key says: The prompt contains a reference to a file you do NOT have access to (C).

In my view, the more likely cause is: The prompt is outside of your organization (B). Copilot prompts are typically tenant-bound; sharing a prompt link across tenants is often blocked by cross-tenant restrictions or requires explicit licensing/configuration. If the external tenant hasn’t granted access or your organization’s policies block external prompts, you’d get a not-found or access-denied result.

Why B fits better:

Cross-tenant restrictions block external prompts from loading.

Licensing and prompt privacy settings can prevent access to externally shared prompts.

The error message aligns with access/app policy rather than a specific file reference.

Bottom line: The provided key says C, but the most plausible explanation is B (prompt is outside your organization) due to tenant restrictions and access controls.
Hyderabad, India

AI Explanation - verified by User8237 on: July 07, 2026
Question 2:
You're right—Finland means User2 does not meet the Left side of the rule.
Updated takeaway for User2:

Left side (usageLocation in ["US","AU"] AND department == "Sales" AND NOT (jobTitle == "Manager")) cannot be true for a user in Finland.

The only way to include User2 is if the Right side is true: jobTitle == "SalesRep".

So, User2 is added to the group only if their jobTitle is SalesRep. If not, they are not included.
What I need to finalize for you:

What is User2’s jobTitle (and, if possible, the jobTitles for User1 and User3)?

If none have SalesRep, then none would be added unless they meet the Left-side conditions (US/AU location, Sales department, not Manager).

Share the jobTitle data and I’ll pinpoint exactly who belongs.
Rozendaal, The Netherlands

AI Explanation - verified by ruben.batista on: July 15, 2026
Question 31:
The correct answer is C: Create separate Azure Event Grid topics and subscriptions for sign-in and sign-out events.
Why:

All authentication events must be processed by PolicyApp. By using two separate topics, you can route sign-in and sign-out events to the same app (via subscriptions pointing to PolicyApp), ensuring both types are processed.

Sign-outs must be processed as fast as possible. Isolating sign-out events on their own topic/subscription lets you scale and prioritize that path independently from sign-ins, reducing contention and latency.

Decoupling the flows provides better control and RBAC granularity. You can apply different access controls and scaling policies per topic/subscription if needed.

A single subscription with a subject filter (e.g., subjectBeginsWith) would still require handling both event types and wouldn’t offer the same isolation and independent scaling benefits as separate topics and subscriptions.

In short, separate topics and subscriptions give you independent routing, scaling, and prioritization for sign-in vs. sign-out events while guaranteeing PolicyApp handles all authentication events.
Valenza, Portugal

AI Explanation - verified by raushankumar6343 on: June 27, 2026
Question 69:
The correct choice is A: speech-to-text in the Azure AI Speech service.
Why:

To detect when the user asks a question in a video stream, you first need to convert spoken words to text. The Speech service provides real-time or batch transcription, which is the foundation for recognizing questions.

Once you have the transcript, you can apply simple NLP (e.g., look for question words or a trailing question mark) to determine when a question is asked.

Why the others aren’t suitable:

B (language detection) would identify the language but not whether the utterance is a question.

C (Face service) analyzes imagery of faces, not spoken content.

D (Custom Vision) detects objects in images, not spoken language.

Note: You’d likely use Speech to Text as the first step, then add lightweight text-analysis to flag questions in real time, keeping development effort minimal.
Kolkata, India

AI Explanation - verified by User7827 on: July 03, 2026
kannst du mir bitte ausführlicher erkläeren bitte
Gern! Hier eine ausführlichere Erklärung zu Frage 35.

Richtige Antwort: A) Streaming einer GUI zu Thin Clients von einem Server

Warum: VDI steht für Virtual Desktop Infrastructure. Dabei werden Desktop-Umgebungen zentral auf einem Server gehostet und die Benutzeroberfläche über das Netzwerk an Thin Clients geliefert. Das trifft genau die Beschreibung in Option A.

Warum die anderen Antworten nicht VDI sind:

- B) Provisioning einer Sandbox als Testumgebung — isolierte Testumgebung, nicht zentral gestreamte Desktop-Oberfläche. - C) Bereitstellung leistungsstarker Workstations mit lokalem OS — OS läuft lokal am Client, nicht zentral. - D) Starten eines VM-Servers auf einem Hypervisor — allgemein Virtualisierung, aber kein zentral gestreamtes Desktop-Interface.

Weiterführende Details:

- Komponenten: Hypervisor (Host), VDI-Broker (Verbindungs-Manager), VM-Pools, Speichersysteme, Display-Protokolle (z. B. RDP/HDX/PCoIP). - Vorteile: einfache zentrale Verwaltung, bessere Sicherheit, vereinfachtes Patchen/Backups, mobile Remote-Arbeit. - Nachteile: höhere Anfangskosten, Netzwerkabhängigkeit, potenzielle Latenzprobleme.

Kurzbeispiel: Firma setzt VDI ein, um Mitarbeitern von zuhause aus denselben Desktop bereitzustellen, ohne Daten auf Endgeräte zu übertragen.

Exam-Tipp: Achte auf Begriffe wie „zentralisierte Desktops“, „Streaming der UI“, „Thin Client“.

Berlin, Germany

AI Explanation - verified by User6250 on: July 07, 2026
Question 3:
Umbuzo 3 uthi: ukuba inkampani inesigqibo se-Azure Basic support plan kwaye ifuna ukuvavanywa komklamo wedeseni we-Azure evela kwa-Microsoft, oku akuxhaswa yiplani eliqhelekileyo. Umgomo kukufuna isikimu esivumela le nkonzo ngenjongo yokubiza ukuphambili ngexabiso eliphantsi. Isisombululo esinikiweyo: “Premier” plan. Ngaba isisombululo sihlangana nomgomo?
Impendulo: Ewe.
Kungani:

Iplaani ye-Premier ibandakanya i-(Architectural Review) okanye ngqo izithandazo zokuhlola uyilo lweendawo ze-Azure, ezivumela inkampani ukuba icelwe ingxelo-nkcazo yokuthi uyilo lwakho luqondakala njani kusuka kwaMicrosoft.

Iplani ethi “Basic” ayiniki olu hlolo lwesakhiwo (architectural assessment) njengenkonzo esemagqabini.

Ngoko ke, ukuthetha ngokulula: ukhetho lwePremier luyahambelana nomgomo wokufumana ukulinganisela/uhlolo lwesakhiwo ngaphantsi kwezindleko eziphantsi ngokungafiki kwiindibano ezingenayo. Qaphela: izincoko ezininzi zingahluka kwiinguqulelo zeenkonzo, kodwa kumgaqo weMMS (Azure support plans) iArchitectural Review iyinxalenye yePremier.
Cape Town, South Africa

AI Explanation - verified by User7070 on: July 17, 2026
Question 7:
Question 7 explanation:
Correct answer: A (Standard).

Storage requirement: 10 apps × 10 GB each = 100 GB total. Basic’s storage quota is insufficient to host 100 GB in one plan, whereas Standard provides enough storage capacity for multiple apps.

Dedicated compute: The plan must use dedicated compute instances; Free/Shared do not meet this, while Basic, Standard, and higher do.

Load balancing: The plan must include load balancing between instances. Standard includes built-in load balancing across app instances; Basic may not meet this requirement.

Costs: Among the plans that satisfy storage, dedicated compute, and load balancing, Standard is the lowest-cost option.

Delhi, India

AI Explanation - verified by raushankumar6343 on: June 27, 2026
Question 27:
The correct choice is raw image binary.
Why:

Form Recognizer accepts image data in the request body as raw binary (bytes). This sends the image directly to the API without wrapping it in JSON or encoding, helping satisfy the “do not store in the cloud” requirement.

The other formats are not how you upload image data to Form Recognizer:

- “form” isn’t a valid upload format. - “URL encoded” is not used for binary image data. - “JSON” would require base64-encoding the image and isn’t the standard upload method.
Tips:

Send the image bytes in the POST body with an appropriate Content-Type (e.g., image/jpeg or image/png).

If you used a URL, the service would fetch the image, which may not align with strict non-storage requirements.

If you want, I can outline a quick example snippet for sending a JPEG image as binary to the endpoint.
Kolkata, India

AI Explanation - verified by User7000 on: June 29, 2026
Question 41:
The correct answer is AWS CloudTrail (A).
Why:

CloudTrail records AWS API calls made in your account, including who made the call, when it happened, where it came from, and the request parameters. This creates an auditable log of account activity for governance and compliance.

The other options don’t focus on auditing API calls:

- AWS Trusted Advisor provides best-practice checks and optimization recommendations. - Amazon Inspector is a security assessment service for EC2 workloads. - AWS X-Ray traces requests through applications, not AWS account API activity.
Tip: For auditing, you typically enable a CloudTrail trail (potentially across regions) and store logs in S3, with optional CloudWatch Logs integration for alerts.
Dakar, Senegal

AI Explanation - verified by User1890 on: July 10, 2026
Question 1:

Correct answer: C — Databricks web application

Why: In the classic Databricks architecture, the control plane hosts management and user-facing services (like the web UI, authentication, and orchestration). The actual compute (driver and worker nodes) runs on the data plane. So the Databricks web application is the component hosted completely in the control plane, while the other options represent compute or data storage aspects that run in the data plane or external storage.

Pune, India

AI Explanation - verified by raushankumar6343 on: June 27, 2026
Question 63:

Correct answer: D — virtual network rules

Explanation:

You want to restrict access to the Language service so only specific Azure processes can reach it, with minimal admin effort.

Virtual network rules let you specify which VNets are allowed to access the Cognitive Services endpoint, providing network-level access control without complex configuration.

Why not the others:

- IPsec rules: are for VPN connectivity, not fine-grained service access control. - Azure Application Gateway: manages HTTP/S traffic, not direct access control to Cognitive Services. - A virtual network gateway: used for connecting networks (VPN/ExpressRoute), not for restricting access to the service itself.
Kolkata, India

AI Explanation - verified by User9647 on: June 30, 2026
Question 71:

Answer: D – AWS Enterprise Support

Why:

- Basic is free but offers only limited, mostly non-technical help (billing/account), with no proactive operational guidance. - Developer and Business plans add more support options, but proactive, event-specific guidance and a dedicated Technical Account Manager (TAM) are primarily part of Enterprise. - Enterprise Support includes proactive guidance, TAMs, and architectural/operational reviews, which aligns with readiness assessment and risk mitigation for a new product launch, and these benefits are included with the plan (no separate add-on fee).
If you want, I can compare the four plans in more detail or explain what a TAM does and how “proactive guidance” works.
Hyderabad, India

AI Explanation - verified by User2971 on: June 26, 2026
Question 86:
Question 86 asks how to assign the IP 192.168.1.1/24 to GigabitEthernet1. Here’s the idea:

A) Router(config-if)# ip address 192.168.1.1 255.255.255.0

- This is the standard command to configure an IPv4 address on an interface. It sets the interface’s address and subnet mask.

B) Router(config-vrf)# address-family ipv4

- This enters the IPv4 address-family context for a VRF. It only applies if you’re using a VRF and need to configure IPv4 routing within that VRF (for example, enabling IPv4 unicast routes in the VRF).
Why these two might be chosen:

If the interface is part of a VRF, you typically configure the interface IP with the first command (A) and, in the VRF context, enable the IPv4 address family (B) so IPv4 routing works inside the VRF.

Note:

In a plain, non-VRF setup, you usually just need A (and possibly no shutdown if the interface is administratively down). The VRF-specific B command isn’t needed unless VRFs are being used.

If you want, I can walk through whether your network really uses a VRF and how that changes the steps.
Plano, United States

AI Explanation - verified by User2971 on: June 27, 2026
Question 110:
Question 110 describes a NAT setup with an internal network 10.1.1.0/27 and a public address pool 209.165.201.0/27.

Correct answers: C and D.

Why:

C: The 10.1.1.0/27 subnet is assigned as the inside local addresses. Inside local are the private addresses used on the internal network.

D: Inside source addresses are translated to the 209.165.201.0/27 subnet. This is the inside global pool; internal hosts get translated to addresses in that public subnet as they reach the outside.

Why the other options aren’t correct:

A: It states a one-to-one NAT translation. The scenario describes NAT to a public pool, which typically implies dynamic translation rather than a per-host static one-to-one mapping.

B: The 209.165.201.0/27 subnet is assigned as the outside local address range. Outside local is the address the outside world sees for internal hosts, not the pool used for translation; this option is not accurate for this configuration.

Plano, United States

AI Explanation - verified by User7828 on: July 11, 2026
Question 50:
Here’s how to think about Question 50.
What the scenario asks: A company uses an Amazon Bedrock base model and has a custom model trained to improve summarization. What must they do to use that custom model through Bedrock?
Key points:

Bedrock BYOM (bring-your-own-model) relies on SageMaker Model Registry to track and manage the custom model versions.

Bedrock needs permission to access the custom model; you must grant Bedrock access to it.

Correct actions:

C: Register the model with the SageMaker Model Registry.

D: Grant access to the custom model in Bedrock.

Why the other options aren’t required:

A: Purchase Provisioned Throughput is not a Bedrock requirement; Bedrock handles inference scaling.

B: Deploying the custom model in a SageMaker endpoint isn’t necessary for Bedrock to use the model (Bedrock can invoke the BYOM via the registered model with appropriate access).

So, the essential steps are: register the model in SageMaker Model Registry (C) and grant Bedrock access to it (D). The provided answer key shows A, which isn’t correct based on how Bedrock BYOM integrates with SageMaker.
Bengaluru, India

AI Explanation - verified by User3059 on: June 28, 2026
Question 4:
Here’s how to understand Question 4.

Correct answer: C — Enable Aurora Auto Scaling for Aurora Replicas. Use an Application Load Balancer (ALB) with the round-robin routing algorithm and sticky sessions enabled.

Why this is the best fit:

Aurora scaling: The requirement is to scale the application and database tiers. Aurora can scale reads by automatically adding/removing read replicas (Aurora Replicas) via Auto Scaling. Writes are handled by the primary writer node; there isn’t an Aurora option to auto-scale the writer like replicas.

App tier scaling: EC2 instances behind an ALB can scale with an Auto Scaling group. ALB distributes HTTP requests to healthy instances.

Round-robin + sticky sessions: Round-robin evenly distributes requests across app servers, and sticky sessions (session affinity) helps maintain a consistent user experience for a stateful app by keeping a user’s requests on the same instance.

Why not the others:

- A/D use a Network Load Balancer (NLB) or reference writer scaling, which isn’t aligned with HTTP-based web app needs or Aurora’s replica-based scaling. - B suggests “Aurora writers,” which isn’t how Aurora Auto Scaling works (scaling is for replicas, not writers).
Note: In a real design, consider externalizing session state (e.g., with ElastiCache or DynamoDB) to reduce reliance on sticky sessions.
Clarksburg, United States

AI Explanation - verified by User1004 on: June 26, 2026
Question 88:
Question 88 asks how to centrally manage partner IP ranges across multiple accounts so the ALB can allow traffic from new partners without updating every account.
Why the options matter:

You want a single source of truth for partner CIDRs that automatically propagates to all accounts.

Security groups can reference a prefix list, and AWS RAM can share a prefix list across accounts in the same region.

Evaluation:

A (DynamoDB + Lambda per account): not centralized; requires cross-account automation and ongoing maintenance.

B (Prefix list with Lambda in each account): still relies on per-account automation; extra steps to keep SGs in sync.

C (Prefix list shared via AWS RAM; SGs reference the prefix list): central, scalable solution. Update the central prefix list; the changes automatically apply to all accounts’ security groups that reference it.

D (S3 + Lambda): similar maintenance burden to A; not as efficient or automatic.

Best choice: C. Create a central, managed prefix list in us-east-1, share it with all accounts via AWS RAM, and update the prefix list as new partners are added. Security groups in each account reference the prefix list, so updates propagate automatically.
Note: The answer key on this page shows A, but based on AWS best practices, C is the correct, most efficient approach.
Madrid, Spain

AI Explanation - verified by User4826 on: July 07, 2026
Question 493:

Answer: C — Authenticate-Nak

Explanation:

- In PPP authentication (PAP or CHAP), when the authenticatee provides incorrect credentials, the authenticator responds with a negative acknowledgment. - For PAP, the relevant negative response is Authenticate-Nak. This indicates authentication failure. - The other options are not used for this failure case: Authenticate-Ack means success, Authenticate-Reject is not the standard PPP response for bad credentials, and Authenticate-Reply is not a typical PPP message.
Pretoria, South Africa

AI Explanation - verified by User1232 on: July 16, 2026
Question 2:
Correct answer: C) Risk register
Reason: A risk register is the artifact that documents each risk, assigns responsible parties (owners), and defines risk thresholds and proposed treatments.

Risk tolerance describes the organization’s overall risk appetite, not the risks themselves.

Risk transfer is a treatment option (e.g., insurance), not a documentation artifact.

Risk analysis assesses likelihood and impact but doesn’t establish ownership or thresholds in a formal register.

Anonymous

AI Explanation - verified by User5104 on: July 11, 2026
Question 109:
Question 109: The correct choice is A. Amazon FSx.
Why:

Amazon FSx for Windows File Server provides a fully managed Windows file server with SMB support, designed for Windows-based applications that need a shared file system.

It integrates with Windows features (Active Directory, NTFS permissions) and offers encryption, backups, and high availability.

The other options are not file servers for Windows apps: EKS is for managed Kubernetes, ECS for container orchestration, and EMR for big data processing.

Dakar, Senegal

AI Explanation - verified by User7144 on: July 12, 2026
MITRE ATT&CK mean
MITRE ATT&CK is a public knowledge base of attacker behaviors used in cyberattacks. It stands for Adversarial Tactics, Techniques, and Common Knowledge.

What it is: a library of real-world tactics and techniques adversaries use, organized by goals (tactics) and methods (techniques, with sub-techniques).

How it’s structured: matrices for different domains (e.g., Enterprise, Mobile, ICS). Each technique has descriptions, examples, detections, and mitigations.

How it’s used: threat modeling, security control mapping, detection engineering, red/blue team exercises, and gap analysis. It helps you map existing detections to specific attacker techniques.

Quick examples:

- Initial Access: Phishing - Credential Access: Credential Dumping - Privilege Escalation: Exploit Public-Facing Application

Key point: ATT&CK is a living, evolving resource—not a standard or scoring system, but a guide to understand and defend against real attacker behavior.

If you want, I can explain how to map a specific defense or detection to ATT&CK techniques.
Grand Forks, United States

AI Explanation - verified by User2092 on: June 26, 2026
Question 4:
Question 4 asks about what’s most important to consider around data in AI projects.
Stated answer on the page: C.
My take (based on data-centric AI principles and PMI objectives):

The best choice is likely D: “Have team members that have experience, understanding of tools, and the ability to deal with massive volumes of data.”

Why:

- AI success hinges on not just data but on how well people can manage it—data governance, quality, labeling, provenance, and data pipelines require skilled teams. - This option emphasizes the capability to handle data at scale, which supports proper data management and governance.

Why the others are less fitting:

- A and B promote collecting or hoarding data without addressing governance/quality. - C focuses on choosing algorithms, which is important but secondary to having the right data and data-management skills.
Note: The exam page warns that some answer keys may be wrong. If you’re studying for the real exam, use this explanation to compare with your own understanding of data governance and data-centric AI, and test against the official objectives.
Bengaluru, India

AI Explanation - verified by User3340 on: June 30, 2026
Question 9:
Here’s how to reason through Question 9.

Requirements recap:

- Two instances (two VMs) for the web app. - SSL support and a custom domain (miami.weyland.com). - At least 12 GB of storage. - Minimize cost.

Evaluate tiers:

- Free: cannot run two instances; no custom domain/SSL support. Not suitable. - Shared: typically limited and not designed for multiple instances or custom SSL hosting. Not suitable. - Basic: supports custom domains and SSL, and allows multiple instances, but storage quota may be below 12 GB in many setups. If storage is insufficient, it wouldn’t meet the 12 GB requirement. - Standard: supports multiple instances, SSL, custom domains, and has higher storage capacity, meeting all the above needs.

Conclusion: Standard is the smallest plan that satisfies all constraints (two instances, SSL with a custom domain, and =12 GB storage) while keeping costs as low as possible.

Answer: A (Standard).
Ahmedabad, India

AI Explanation - verified by User5104 on: July 11, 2026
Question 86:
Question 86 asks which service improves network performance by sending traffic through the AWS worldwide network infrastructure.

Answer: AWS Global Accelerator (option C)

Why:

It routes internet-facing traffic over the AWS global network to the nearest healthy endpoint, reducing latency and jitter.

It uses static Anycast IP addresses and continuously monitors endpoint health, automatically steering traffic away from unhealthy endpoints.

Why the others aren’t correct:

Route table controls routing inside a VPC, not global network optimization.

AWS Transit Gateway connects VPCs and on-prem networks, but doesn’t optimize traffic paths across the AWS network.

Amazon VPC provides the virtual network itself, not a traffic-optimization service.

Dakar, Senegal

AI Explanation - verified by User1740 on: July 07, 2026
Question 12:
The correct answer is AWS Service Catalog.

Why: It lets an organization publish and govern a catalog of IT services and infrastructure "products" for end users. Each product is typically defined by an IaC template (for example, a CloudFormation template), and you can enforce approvals, access controls, and constraints to ensure only approved configurations are deployed. This directly supports governance of deployed IT services and IaC templates.

Why not the others:

- AWS Resource Explorer: used for discovering resources across accounts, not for governance of IaC templates. - AWS Organizations: good for multi-account governance and policy management, but not for managing and governing IaC templates themselves. - AWS Systems Manager: focuses on operational management, automation, and patching, not on central governance of IaC templates.
Would you like a quick walkthrough of how to set up a simple product in Service Catalog using a CloudFormation template?
Rawalpindi, Pakistan

AI Explanation - verified by User2024 on: July 07, 2026
So if too long of cable causes FCS/CRC and bad cable can cause FCS/CRC, how do we know what the correct answer is
Answer: A — physical cable fault.
Why: FCS/CRC errors indicate frames are corrupt on the wire, a classic sign of a physical-layer problem. In a data center, a server directly connected to the core switch is unlikely to have a copper run beyond 100 m, so “a cable that is too long” is less plausible. If the link is physically intact but still showing FCS errors, a faulty cable, bad connector, or bad transceiver is the more likely cause.
How to decide in practice:

If topology implies short copper runs (typical DC), favor physical faults over length.

Use show commands: show interfaces [interface] counters errors to confirm FCS/CRC errors.

Troubleshoot: reseat/replace the patch cable, test with a known-good cable, try a different port/transceiver, and inspect connectors.

When a long copper run would be plausible (e.g., actual distance >100 m), then “too long” could be the issue. But given the described DC scenario, A is the best fit.
Salem, United States

AI Explanation - verified by User2971 on: June 26, 2026
Question 18:
Question 18 asks which technology provides Layer 2 and Layer 3 logical networks in Cisco SD-Access.

Correct answer: overlay network (D)

Why: In SD-Access, the underlay is the physical IP fabric that carries traffic. The overlay creates the logical L2/L3 networks on top of that fabric (often using VXLAN with EVPN as the control plane) to provide scalable, segmented networks across the entire campus.

Why the others are not correct:

- underlay network: provides the physical transport, not the logical overlay networks. - VPN routing/forwarding: refers to VRF concepts, not the primary mechanism for L2/L3 logical networks across the fabric. - easy virtual network: not a Cisco term used for this purpose.
Bottom line: The overlay network is what enables the logical L2/L3 networks in SD-Access. The key is the separation: underlay = physical, overlay = logical networks built on top of it.
Plano, United States

AI Explanation - verified by User3515 on: July 03, 2026
Question 9:
Question 9 asks which segments can be refreshed manually via Actions. The correct choices are:

Filtered Data Extension (B)

- This is a data extension created by applying a filter. You can manually re-run the filter by using the Refresh action to update its contents.

Filtered Group (D)

- This is a group in Contact Builder defined by a filter. You can refresh the group to re-evaluate membership.
Why the others aren’t correct:

Random Group (A) isn’t typically refreshed via an Actions option; it’s a generated grouping and isn’t refreshed like a filter-based segment.

Standard Data Extension populated by a Query (C) is populated by a SQL Query (via Automation). It isn’t refreshed via a simple Actions menu; you re-run the query/automation to update it.

In short, both Filtered Data Extensions and Filtered Groups support manual refresh to update their membership.
Pune, India

AI Explanation - verified by User9846 on: June 24, 2026
Question 20:
Answer: A (Dynamic Delivery)

Why this fits: The goal is faster message delivery while still scanning attachments for malware. Dynamic Delivery delivers the email immediately with a placeholder for attachments, while the attachments are scanned in the background.

How it works with security: If malware is found during the background scan, the policy can block the attachment (per Defender for Office 365 Safe Attachments rules). This preserves security without delaying initial delivery.

How it compares to other modes:

- Block: delays delivery until scanning completes (higher latency). - Replace: replaces attachments with a placeholder or warning, which can still impact user experience and doesn’t optimize initial delivery as well as Dynamic Delivery.

Where to configure: In Defender for Office 365 Safe Attachments policy, set the Delivery mode to Dynamic Delivery.

Medellín, Colombia

AI Explanation - verified by amorbigail on: July 17, 2026
Azure Files is an example of infrastructure as a service (IaaS).Yes/No. A DNS server that runs on an Azure virtual machine is an example of platform as a service (PaaS).Yes/No. Microsoft Intune is an example of software as a service (SaaS). Yes/No

Azure Files is an example of infrastructure as a service (IaaS). No. Azure Files is a managed storage service, typically considered PaaS (Storage as a Service), not IaaS.

A DNS server that runs on an Azure virtual machine is an example of platform as a service (PaaS). No. Running a DNS server on a VM is IaaS because you manage the OS and DNS software.

Microsoft Intune is an example of software as a service (SaaS). Yes. Intune is a cloud-based, fully managed service you use over the Internet.

Accra, Ghana

AI Explanation - verified by User3911 on: June 26, 2026
Question 9:
Question 9 answer: A and C — Enable cache information in the storefront toolkit and view the product list page cache settings in Administration > Manage Sites.
Why:

A: The Storefront Toolkit has a “Cache Information” feature that lets you see per-tile caching data for components like product tiles, so you can verify how long they’re cached.

C: The Product List Page cache settings are viewable in Admin > Manage Sites, letting you confirm the overall page caching configuration that affects product tiles.

Why not B: Technical Reports isn’t typically used to verify per-tile cache durations; it’s for broader performance reporting, not specific cache TTLs. Why not D: The template debugger shows rendering details, not actual cache durations for templates like producttile.isml.
Bengaluru, India

AI Explanation - verified by juris.siksna on: June 27, 2026
Question 411:
Question 411 asks what two actions a project manager should take after the security department flags regulatory requirements.
Answer: The two correct actions are B and E.

B: Ask the security department for details about regulations. Why: You need precise, testable requirements to understand what must be complied with. Without specifics, you can’t analyze impact or plan properly.

E: Ask the team members to analyze the impact of including this regulation. Why: Impact analysis (cost, schedule, scope, risk) informs whether and how to implement the regulation and helps with prioritization and planning.

Why the other options aren’t the best immediate actions:

A: The product owner owns the backlog; without specifics, adding requirements is premature. The PM should gather details first (B) and analyze impact (E) before backlog actions.

C: Prioritizing with stakeholders is important, but you should first understand the regulation and its impact rather than asking for priority without analysis.

D: Instructing the team to include it in the next iteration skips the necessary impact analysis and refinement.

In short, gather specifics from security, then perform an impact analysis before altering backlog or sprint plans.
Riga, Latvia

AI Explanation - verified by odili.tina on: June 27, 2026
Question 47:

Answer: The items you can endorse are Lakehouse1, Model1, and Report1 only (Dashboard1 cannot be endorsed).

Why: Endorsement is a Fabric and Power BI feature used to mark high-quality content. The rule is that any Fabric or Power BI item except Power BI dashboards can be promoted or certified. Since Dashboard1 is a Power BI dashboard, it isn’t eligible for endorsement, per the note and explanation.

Quick takeaway:

- Eligible: Lakehouse1, Model1, Report1 - Not eligible: Dashboard1
Lagos, Nigeria

AI Explanation - verified by User6338 on: July 14, 2026
Question 31:

False statement: D — Local Variables from a Screen may be directly accessed from another Screen.

Why:

- Local Variables are scoped to a single Screen. They cannot be read or modified directly from other screens. - To pass data between screens, use Input Parameters (to receive data when navigating to a screen) or Output Parameters (to send data back), or other shared storage like Entities.

Quick checks on the other options:

- A: True. Local Variables store temporary data inside a Screen. - B: True. Input Parameters allow passing data between Screens during navigation. - C: True. In a reactive UI, changes to a Local Variable trigger immediate UI updates.
Petaling Jaya, Malaysia

AI Explanation - verified by sshuang68 on: June 28, 2026
Question 324:
Question 324: At which layer does Cisco DNA Center support REST controls?
Answer: B) northbound APIs
Why:

RESTful access to DNA Center is provided through its northbound APIs. These are the external interfaces apps or controllers use to interact with DNA Center for automation, policy, and analytics.

The session layer is an OSI concept about maintaining a communication session, not about REST controls.

EEM applets or scripts are device-level automation on Cisco IOS, not how DNA Center exposes REST controls.

YAML is just a data format for payloads; it’s not a distinct layer for REST controls.

Key idea: REST in DNA Center operates via its application-layer northbound APIs, which external systems call to manage and automate the network.
Plano, United States

AI Explanation - verified by User6346 on: July 16, 2026
Question 22:
Question 22 asks if the given solution meets the goal of reducing admin effort for deploying a large number of VMs weekly (Windows Server 2016 and Ubuntu Linux) and then removing them in the same week.

The proposed solution: use Microsoft Managed Desktop.

Why this does not meet the goal:

- Microsoft Managed Desktop is aimed at managing end-user devices (Windows 10/11) for enterprises, not at provisioning or life-cycle management of Azure VMs. - It does not inherently automate creation/deletion of large VM fleets or support mixed OS images like Windows Server 2016 and Linux.

A better fit would be Azure DevTest Labs (or similar lab services), which is designed to:

- create and manage many VMs for development/testing, - support both Windows and Linux images, - provide templates, auto-shutdown/start, and easier lifecycle management to reduce admin effort.
Answer: No. The MS Managed Desktop approach does not align with the VM lifecycle automation needs; DevTest Labs would be a better choice for this scenario.
Bengaluru, India

AI Explanation - verified by User3707 on: July 11, 2026
Question 7:
Q7: Ce descrie cum componentele ?i activita?ile lucreaza împreuna pentru a facilita crearea de valoare?

Raspuns corect: ITIL service value system (SVS).

De ce: SVS descrie un cadru în care toate componentele ?i activita?ile (principii directoare, guvernan?a, lan?ul de valoare al serviciilor, practicile ?i îmbunata?irea continua) lucreaza împreuna pentru a co-crea valoare cu par?ile interesate.

De ce nu celelalte raspunsuri:

- ITIL guiding principles: ofera orientari, nu modul în care toate componentele interac?ioneaza între ele. - The four dimensions of service management: descriu perspectiva/dimensiunile, nu cum se conecteaza componentele pentru valoare. - A service relationship: este rela?ia dintre furnizor ?i utilizator, nu cadrul care organizeaza interoperabilitatea componentelor.
Pitesti, Romania

AI Explanation - verified by User5722 on: June 30, 2026
Question 12:
The correct answer is "Only 1" (Option D).
Why:

In Salesforce, a user has exactly one Profile. The profile defines the baseline permissions and access (objects, fields, apps, etc.).

A user cannot have multiple profiles. However, you can grant additional permissions using Permission Sets—these are additive and do not replace the profile.

If different baseline access is needed for another task, you would create/clone a different profile for another user, not assign multiple profiles to the same user.

Bengaluru, India

AI Explanation - verified by raushankumar6343 on: June 27, 2026
Question 25:
The correct choice is A: From the Azure portal, configure parallel indexing.
Why:

Parallel indexing allows the indexer to process multiple documents concurrently, which directly reduces the time required to build the index when you have a sizable data set (10 GB of scanned documents/images in this case).

The other options don’t impact indexing speed:

- Scheduled indexing just controls when indexing runs, not how fast it builds the index. - Configuring field mappings via REST API affects data mapping, not speed. - Creating a text-based indexer via REST API doesn’t inherently speed up ingestion compared with parallel processing.
Notes:

Enabling parallel indexing increases throughput but may consume more resources; ensure the data source supports parallel ingestion and monitor performance quotas.

Kolkata, India

AI Explanation - verified by User6680 on: July 07, 2026
Question 332:
Correct answer: C

In IT asset management, the most significant risk is that unregistered assets are not included in security documentation. Without a complete, up-to-date asset inventory and linked documentation, you can’t apply proper controls, assess risk, or ensure compliance.

Why not the others:

- A) IT assets used for private purposes is a nuisance risk, but it’s primarily an acceptable-use or policy issue, not the core security risk of asset management. - B) Unregistered assets may not be supported is important, but its impact is downstream of not having assets documented at all. - D) Unregistered assets may not be configured properly stems from missing documentation, but the root problem is the absence of inventory and records (C).

Relationship to ISACA risk management: effective risk management requires a complete asset inventory linked to security controls and documentation; if assets aren’t documented, you can’t manage or measure risk properly.

Grovetown, United States

AI Explanation - verified by sshuang68 on: June 28, 2026
Question 338:
Question 338 asks about the Cisco DNA Center Intent API. The two correct characteristics are:

northbound API

business outcome oriented

Rationale:

The Intent API is exposed to higher-level applications (northbound) to drive business outcomes, not device-level details.

It is not device-oriented, not southbound, and it is intent-based (not procedural).

Plano, United States

AI Explanation - verified by User3804 on: July 11, 2026
Question 1:
Correct answer: A — “Commits are made on a branch that can have a linked pull request.”
Why:

commits are changes made on a branch. A PR is created to merge that branch into another branch (usually the main branch) and can be linked to that branch.

The PR “tracks” the commits on the branch. As you push new commits to the branch, the PR automatically includes them.

You don’t have to wait for a PR to exist before making commits—you can commit before or after opening a PR. You can open the PR with some commits and continue pushing more commits to the same branch, and the PR will update.

Why the other options are incorrect:

B: Commits can be made before or after a PR is created (not only after).

C: Same idea as B—commits aren’t limited to only before a PR.

D: Commits are made on a branch, not directly on a pull request; the PR references that branch for merging.

Amman, Jordan

AI Explanation - verified by User2971 on: June 27, 2026
Question 107:
Question 107 discusses a port-channel between SW2 and SW3 where SW2 isn’t running Cisco IOS, and the channel doesn’t come up.

Correct answer: B — The port-channel on SW2 is using an incompatible protocol.

Why:

A port-channel requires both ends to negotiate the same channel protocol (e.g., Cisco’s PAgP or LACP from IEEE 802.3ad).

If SW2 is not Cisco, it likely doesn’t implement Cisco’s PAgP, or it uses a different protocol. In that case SW3’s side cannot complete the negotiation, so the channel never forms.

Why the other options aren’t correct:

A: “The port-channel mode should be set to auto.” Auto (PAgP) or active (LACP) negotiations won’t succeed if the other side doesn’t speak the same protocol.

C: “The port-channel trunk is not allowing the native VLAN.” This is a post-formation VLAN issue, not the reason the channel fails to form.

D: “The port-channel interface load balance should be set to src-mac.” Load-balancing mode affects traffic, not the initial establishment.

What to check:

Ensure both sides support the same protocol (best practice: use LACP with channel-group <n> mode active on Cisco gear).

If mixing vendors, verify that the non-Cisco device supports the chosen protocol and configuration.

Plano, United States

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Cisco 100-490 Exam Actual Questions Supporting Cisco Routing & Switching Network Devices (Page 3 )

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Cisco 100-490 Exam Actual Questions
Supporting Cisco Routing & Switching Network Devices (Page 3 )