Before deploying Kerberos, you must deploy the LDAF service
The LDAP service must be deployed on the same node as the Kerberos service
Kerberos service and LDAP are deployed to the same node to facilitate data access and improve performance
LDAP service can be shared across multiple clusters

Answer(s): A,C

Show Answer Next Question

QUESTION: 23

Hive log collection on Fusionlnsight HD Manager interface, which option is incorrect?

You can specify an instance for log collection, such as specifying that the MetaStore logs are collected separately
Log collection can be specified for a period of time, for example, only records of 2016-1-1> 2016-1-
You can specify the node IP for log collection, such as downloading only the logs of a certain IP
can specify that the user logs into the log collection, for example, only download logs generated by userA user

Answer(s): D

Show Answer Next Question

QUESTION: 24

Which of the following services can the Spark service read data from in the Huawei Fusioninsight HD cluster? (Multiple choices)

YARN
HDFS
Hive
HBase

Answer(s): B,C,D

Show Answer Next Question

QUESTION: 25

If there are only Default, QueueA, and QueueB subqueues in the YARN cluster, then their capacity can be set to 60%, 25%, and 22%, respectively.

True
False

Answer(s): B

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Community-Verified AI Explanation Commented on April 12, 2026
Question 157:
Question 157 asks how to meet 5-year data retention and indefinite audit logs for an Aurora PostgreSQL DB, given automated backups are already configured.

Correct: D and E

- D: Configure an Amazon CloudWatch Logs export for the DB cluster. This stores database activity/audit logs in CloudWatch Logs indefinitely, satisfying the requirement to keep audit logs long-term. - E: Use AWS Backup to take the backups and keep them for 5 years. AWS Backup provides centralized lifecycle management and can retain backups for a fixed 5-year period, meeting the data-retention requirement beyond what Aurora automated backups offer.
Why the others aren’t correct

A (Take a manual snapshot): not automated and not suitable for long-term retention.

B (Lifecycle policy for automated backups): not a defined feature for RDS/Aurora automated backups.

C (Automated backup retention for 5 years): automated backups in Aurora have a limited retention window (not indefinite 5 years) and don’t cover audit-log retention.

Concepts:

Use CloudWatch Logs exports to preserve audit logs beyond DB lifecycle.

Use AWS Backup for long-term retention and centralized policy control for backups.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 154:
The correct answer is B.

B. Use S3 Object Lock in compliance mode with a retention period of 365 days.

Why: Compliance mode enforces write-once-read-many for all objects for the retention period, and cannot be overridden, meeting the requirement that no one can modify or delete files for at least 1 year after creation. This also allows the few scientists to add new files, while existing files remain immutable for the retention window.
Why the others aren’t correct:

A. Governance mode with a legal hold of 1 year.

Governance mode can be overridden by users with special permissions; not truly immutable for all users as required.

C. IAM role to restrict deletions.

IAM alone cannot guarantee immutability or prevent overwrites/deletes once objects are added.

D. Lambda to track hashes.

Hash tracking does not enforce immutability or prevent deletions/modifications.
San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 150:
Answer: A — Create CloudWatch composite alarms where possible.

Composite alarms let you combine multiple underlying alarms (e.g., CPU > 50% and disk read IOPS high) and trigger only when all are in ALARM (AND logic). This matches the requirement to act only when both conditions occur, reducing false alarms from short CPU bursts.

Why not the others:

- Dashboards visualize data but don’t raise alarms or automate actions. - Synthetics canaries monitor availability, not real-time infrastructure metric correlation. - CloudWatch doesn’t support “single alarm with multiple thresholds” for correlated metrics; composite alarms are designed for this use case.
San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 41:

Correct answer: Create an NS record named research in the adatum.com zone.

Why: Delegating a subdomain to another DNS server is done by adding an NS record in the parent zone (adatum.com) with the name of the subdomain (research) and pointing to the subdomain’s authoritative name servers. This tells resolvers to query the delegated server for research.adatum.com.

Why the others are wrong:

- PTR record is for reverse DNS, not delegation. - SOA record is the zone’s start of authority, not used for delegating a subdomain. - An A record for *.research would only map a wildcard host, not delegate authority.

Quick note: After creating the NS record, ensure the target DNS server is set up to serve research.adatum.com (likely with its own NS records) and register the appropriate NS at the registrar if needed.

Hyderabad, India

Community-Verified AI Explanation Commented on April 12, 2026
Question 143:

Answer: D: Host the application on Amazon ECS. Set up an Application Load Balancer with ECS as the target.

Why this is correct:

- You want to break the monolith into smaller, independently managed microservices with minimal operational overhead. ECS provides managed container orchestration, enabling multiple teams to own distinct services. - An Application Load Balancer routes traffic to the appropriate containerized services and supports auto scaling, enhancing scalability.

Why other options aren’t as suitable:

- A: Using Lambda is serverless but often requires substantial refactoring for a monolith moving to microservices; may introduce startup latency and stateful handling issues. - B: Amplify is frontend-focused and not designed to orchestrate multiple backend microservices. - C: Pure EC2 with ASG gives control but higher operational overhead vs a managed container approach for breaking into multiple services.
San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 142:

Correct answer: C

Why:

AWS Global Accelerator provides any-to-any UDP support, static IP addresses, and routes traffic to the nearest edge location, delivering the lowest latency for UDP-based traffic.

It can forward traffic to a Network Load Balancer (NLB), which is suitable for UDP/TCP workloads and supports static IPs.

Using EC2 instances in an Auto Scaling group gives control over kernel/UDP handling and allows scalable, highly available front-end servers.

Why the others aren’t as good:

A: Route 53 with ALB targets HTTP/HTTPS, not UDP, and lacks static edge IPs.

B: CloudFront is HTTP/HTTPS oriented and doesn’t support UDP at edge; NLB behind CloudFront adds complexity and latency.

D: API Gateway targets HTTP traffic; not suitable for UDP and doesn’t provide static edge IPs.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 141:

Correct answer: A

Why:

Use CloudFront with the ALB as the origin. CloudFront caches static content at edge locations worldwide, so users get static assets from nearby edges.

For dynamic content, CloudFront forwards requests to the origin (the ALB in the single region). The near edge location still reduces the round-trip time to the origin, improving latency for dynamic responses.

A single region is sufficient because edge caching at CloudFront delivers content globally without duplicating back-end deployments; latency is minimized by the edge network rather than multi-region routing.

Why the others aren’t as good:

B adds multi-region deployment and Route 53 latency routing, which is unnecessary since CloudFront already optimizes global delivery.

C only caches static content; dynamic content would still travel to the ALB and be slower.

D uses geolocation routing to a closest region but loses CloudFront’s global edge caching benefits and adds complexity.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 140:
Correct answers: A and C

A. Use Spot Instances for the data ingestion layer. The data ingestion on EC2 is sporadic and can tolerate interruptions, making Spot Instances the most cost-efficient option for this layer.

C. Purchase a 1-year Compute Savings Plan for the front end and API layer. The front end runs on Fargate and the API on Lambda. A 1-year Compute Savings Plan covers compute usage across EC2, Fargate, and Lambda, providing significant savings with flexibility across these services.

Why others are less optimal:

B On-Demand is more expensive for the ingestion layer than Spot.

D All Upfront RI for the ingestion layer is inflexible and doesn't suit potentially interrupted workloads.

E Savings Plan for EC2 only ignores Fargate/Lambda, which would miss savings on those services.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 139:

Answer: D

Why this is correct:

- Enable S3 Replication between the source and analysis buckets so new objects are automatically copied as they arrive, with minimal manual effort. - Use EventBridge to propagate ObjectCreated events from the analysis bucket to Lambda (for pattern matching) and to SageMaker Pipelines (for the ML pipeline), enabling event-driven processing.

Why the other options aren’t as good:

- A: Copies done by a Lambda function would add overhead, risk duplicates, and require custom logic instead of built-in replication. - B: Relying on EventBridge alone won’t ensure immediate cross-bucket replication. - C: Lacking EventBridge routing means coordinating Lambda and SageMaker without centralized event-driven triggers. - E: S3 replication is already the key; using a single root or assorting per-bucket rules adds unnecessary complexity.
San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 135:
Question 135 asks how to connect privately to a service hosted in an external provider’s VPC, with access restricted to that service and initiated only from your VPC.

Correct answer: D) Use AWS PrivateLink to connect to the target service. Create a VPC endpoint for the target service.

The provider creates a VPC Endpoint Service; you create an Interface Endpoint in your VPC to connect. Traffic stays on the AWS network and is restricted to that service.

Why:

- PrivateLink creates a private, service-specific connection that originates from your VPC and remains within the AWS network. - It limits access to the single target service, satisfying the security requirement.

Why the other options are incorrect:

- A: VPC peering connects entire VPCs, not a single service; traffic may reach other resources and isn’t PrivateLink-based. - B: A provider-side VPN/Gateway doesn’t restrict access to just one service and isn’t PrivateLink. - C: NAT gateway exposes traffic to the internet and does not establish a private, service-scoped connection.
San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 134:
Question 134 asks for a serverless, globally replicated data analytics solution for data in S3, with encryption and minimal ops.

Correct answer: C) Load into the existing S3 bucket. Enable CRR with SSE-S3. Use Athena to query the data.

Why:

- Using a single data store (S3) with serverless analytics (Athena) minimizes operational overhead. - Enable CRR to replicate encrypted objects to another region, fulfilling global availability and DR needs. - SSE-S3 keeps encryption managed by S3 with no extra key management.

Why the other options are less suitable:

- A: Requiring SSE-KMS multi-Region keys adds key management overhead and potential latency; although valid, it's unnecessary for least overhead. - B: Recommends RDS, which is not serverless analytics and increases operational overhead. - D: Also uses RDS, which introduces database management and is not aligned with a serverless analytics model.
Key concepts:

CRR replicates S3 objects between regions.

SSE-S3 provides server-side encryption with minimal management.

Athena enables serverless SQL queries directly on S3 data.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 133:
Question 133 asks how to upgrade an on-premises Oracle DB to the latest version, set up DR, minimize operational overhead, and keep OS access.

Correct answer: C) Migrate to RDS Custom for Oracle. Create a read replica for the database in another AWS Region.

Why:

- RDS Custom for Oracle provides managed DB provisioning with OS access for maintenance/admin tasks, while handling patching/ upgrades and reducing operational overhead. - A cross-region read replica gives DR capability with controlled lag and regional failover, meeting DR requirements while still allowing OS access for maintenance if needed.

Why the other options are less suitable:

- A) EC2 + manual replication: high operational overhead (full OS/db management, failover handling). - B) RDS for Oracle: no OS access; cross-region backups don’t provide OS-level control. - D) Standby in another AZ: not cross-region DR and still limits OS access.
Key concepts:

RDS Custom provides OS access plus managed DB operations.

Cross-region read replicas support DR with lower overhead than full active-active setups.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 131:
Question 131 asks how to serve all files via CloudFront while preventing direct access to the S3 URL.

Correct approach: Use an Origin Access Identity (OAI). Create an OAI, assign it to the CloudFront distribution, and configure the S3 bucket so that only the OAI has permission to read objects. This keeps the bucket private and ensures that objects can only be retrieved through CloudFront, not via direct S3 URLs.

Why the other options are incorrect:

- A: Creating per-object IAM users and policies for CloudFront isn't a standard, scalable way to restrict S3 access from CloudFront; CloudFront doesn’t use IAM users for access in this scenario. - B: A bucket policy with the CloudFront distribution ID as the Principal is not a valid pattern; OAIs are the supported mechanism. - C: A bucket policy that uses the distribution ID as Principal is invalid; you should use an OAI to grant S3 access to CloudFront.
Implementation outline:

In CloudFront, create an Origin Access Identity and attach it to the distribution.

In the S3 bucket, block public access and grant s3:GetObject to the OAI.

Verify that objects are accessible via the CloudFront URL but not via the S3 URL.

Outcome: S3 remains private; content is served securely and privately through CloudFront.
San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 120:
Question 120 summary:

Scenario: Self-managed DNS with three EC2s behind an NLB in us-west-2, plus another NLB in eu-west-1 with three EC2s. Goal: fast, highly available routing across US/Europe.

Correct answer: Create an Amazon Route 53 Global Accelerator with endpoint groups in us-west-2 and eu-west-1. Add the two NLBs as endpoints.

Why this is correct:

Global Accelerator provides a single fixed set of global IPs and health-aware routing across multiple regions, directing traffic to the closest healthy endpoint (here, the two NLBs). This improves performance and availability for users in both US and Europe with minimal configuration.

Why the other options are less suitable:

A: Geolocation routing + CloudFront is regional or cached and won’t automatically optimize health across regions, adding unnecessary complexity.

C: Attaching Elastic IPs to six instances is impractical and does not provide regional health-aware routing.

D: Latency-based routing to ALBs would require changing infrastructure and does not give centralized, global optimization like Global Accelerator.

Key concepts:

Global Accelerator uses endpoint groups per region and health checks to route traffic to healthy NLBs across regions.

It provides fast failover and consistent performance for multi-region setups.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 117:

The requirement: store all application logs in Amazon OpenSearch Service in near real time with the least operational overhead.

Correct answer: A — Configure a CloudWatch Logs subscription to stream the logs to Amazon OpenSearch Service (OpenSearch). This is a fully managed, near-real-time integration with minimal setup and no custom code.

Why this is best:

- It provides near-real-time ingestion directly from CloudWatch Logs to OpenSearch. - It involves minimal configuration and no additional services or agents.

Why the other options are worse for this scenario:

- B: A Lambda function would require writing code, handling retries, scaling, and maintenance. - C: Kinesis Data Firehose adds an extra managed service layer and more configuration for near-real-time ingestion. - D: Installing agents on each server and using Kinesis adds significant operational burden and scaling concerns.
San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 109:
Answer: D
Explanation:

Use an S3 bucket with S3 Object Lock enabled and Versioning. This provides immutability for new uploads so objects can’t be deleted or overwritten during the retention/hold period.

Apply a Legal Hold to the objects. A legal hold prevents deletion or modification until it’s released, giving flexible control without a fixed retention period.

Grant delete capability only to specific users by adding the IAM permission s3:PutObjectLegalHold (and related policies) to those users, limiting who can remove the hold or delete objects.

Why the others don’t fit:

- A) Glacier is archival and not directly integrated with per-object delete permissions in S3. - B) Governance mode with a long retention prevents deletions but doesn’t provide per-user delete control. - C) CloudTrail/recovery does not enforce immutability.
San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 108:
Answer: A
Explanation:

This uses an event-driven pattern: when an RDS update occurs (a listing is sold), a Lambda function is triggered to publish a message to an SQS queue.

A standard (non-FIFO) SQS queue supports multiple consumers to poll and process the deletion data, enabling decoupled, scalable delivery to multiple targets with reliable delivery.

Why not B: A FIFO queue is unnecessary here; it introduces lower throughput and additional deduplication logic, which increases overhead.

Why not C: RDS event notifications are for DB instance-level events, not for per-row data changes like a sold listing; and adding SNS fan-out adds complexity.

Why not D: An SNS fan-out with multiple SQS queues adds extra hops; a direct Lambda-to-SQS flow is simpler and more efficient for this use case.

Key concepts:

Event-driven architecture with AWS Lambda and SQS

Decoupled, scalable delivery to multiple targets

Standard vs FIFO queues trade-offs (throughput vs strict ordering)

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 98:

Correct answer: C

Why this works:

- Standard SQS queues provide at-least-once delivery, so a message can be delivered again if processing isn’t complete before the visibility timeout. - Increasing the visibility timeout to exceed the sum of the Lambda function timeout and the batch window prevents the message from becoming visible again while still being processed, eliminating duplicate Lambda invocations and duplicate emails.

Why not the others:

- A) Long polling reduces empty receives but doesn’t prevent duplicates. - B) FIFO with deduplication is unnecessary overhead for this issue; Standard QoS already allows duplicates. - D) Deleting messages before processing risks losing messages if processing fails. - E) Not applicable to this scenario.

Key concept: Adjust the SQS visibility timeout in relation to the Lambda runtime and batch window to avoid reprocessing and duplicates.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 86:
Question 86 asks for a secure way for web servers to connect to a common RDS MySQL Multi-AZ DB instance while meeting a requirement to rotate user credentials frequently.

Correct answer: A. Store the database user credentials in AWS Secrets Manager and grant the web servers the necessary IAM permissions to access Secrets Manager. Secrets Manager supports automatic rotation for RDS-compatible databases, giving centralized, secure, and frequently rotated credentials without manual effort.

Why this works:

Centralized, automatically rotated credentials reduce the risk of credential leakage.

Web servers fetch credentials securely from Secrets Manager via IAM permissions.

Rotation is built-in and scalable for multiple web servers.

Why the other options are not suitable:

B: AWS Systems Manager OpsCenter is for operational issue management, not credential storage or rotation.

C: Storing credentials in a secure S3 bucket requires manual rotation and lacks integrated rotation/auditability.

D: Per-host files encrypted with KMS do not provide centralized rotation or easy auditability for many servers.

Implementation hint:

Create a secret in Secrets Manager for the DB credentials, enable rotation for the secret, and attach an IAM role to the web servers to allow secretsmanager:GetSecretValue (and related permissions) to retrieve credentials at runtime.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 13:
Yes. The correct answer for Q13 is C: Use seq on the loop on line 2.
Reason: for h in {1..254} relies on brace expansion and may not work in all shells. Using for h in $(seq 1 254); do improves portability and compatibility across POSIX-compliant shells, ensuring the script runs reliably in more environments.
Nixa, United States

Community-Verified AI Explanation Commented on April 12, 2026
Question 59:
Question 59 focuses on ingesting and analyzing 30+ TB of clickstream data daily.

Answer: D

Why: Use a managed streaming pipeline: collect with Kinesis Data Streams, deliver with Kinesis Data Firehose to an S3 data lake, then load into Amazon Redshift for analytics. This provides scalable, real-time ingestion and straightforward analytics loading.

Why the others are not suitable:

A) AWS Data Pipeline is deprecated for new workloads.

B) EC2-based ECS requires managing infrastructure and isn’t a managed streaming solution.

C) CloudFront is a CDN, not a data ingestion or streaming mechanism; Lambda alone isn’t scalable for continuous 30 TB/day without orchestration.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 11:

Correct answer: A — Use AWS Secrets Manager with automatic rotation.

Why this is correct:

Centralizes database credentials in Secrets Manager instead of local files.

Supports automatic rotation for database credentials, reducing manual maintenance.

Applications can retrieve secrets at runtime without code changes, improving security and reducing ops overhead.

How to implement (high level):

Create a secret in Secrets Manager for the Aurora DB credentials.

Enable automatic rotation (MySQL/Aurora-compatible rotation) with the built-in Lambda function.

Grant your EC2 instances an IAM role that allows secrets:GetSecretValue.

Update the application to fetch credentials from Secrets Manager (or continue using the secret’s value without embedding passwords in the host).

Why the other options are less suitable:

B: Parameter Store can hold secrets but lacks the seamless, native rotation for database credentials you get with Secrets Manager.

C: Storing credentials in S3 and rotating with Lambda is manual and riskier; no native rotation flow.

D: Rotating via encrypted EBS volumes is complex, manual, and doesn’t provide centralized or automated credential rotation.

San Miguel De Allende, Mexico

Community-Verified AI Explanation Commented on April 12, 2026
Question 3:

Correct answer: A

Why A works:

- The global condition key aws:PrincipalOrgID allows you to grant access only to principals (users/roles) that belong to your AWS Organization. - By adding this condition to the S3 bucket policy, all accounts within the organization gain access without managing per-account permissions or OUs. - This minimizes ongoing admin effort and scales automatically as accounts are added to the org.

Why the others are less suitable:

- B (aws:PrincipalOrgPaths): Requires explicit OU paths and ongoing maintenance as accounts move between OUs; increases complexity. - C (CloudTrail monitoring): It logs events but cannot enforce real-time access control. - D (aws:PrincipalTag): Needs tagging every user and maintaining tag-based policies, adding manual overhead.

Quick example (conceptual):

- Policy with a Condition like "aws:PrincipalOrgID": "o-1234567890" grants access to any principal from your organization, with no per-user updates needed.
San Miguel De Allende, Mexico

Chad Commented on April 12, 2026
Question 6:

Correct answer: Emergency procedures.

Why: An MSDS (Material Safety Data Sheet) provides safety and handling information for hazardous materials. For a battery backup, it includes emergency procedures such as first-aid measures, fire-fighting steps, and spill containment.

Why the others are not correct:

- Installation instructions and Configuration steps are part of manuals or guides, not MSDS. - Voltage specifications are technical specs, not safety-focused data.
United States

Community-Verified AI Explanation Commented on April 12, 2026
Question 27:
Question 27 focuses on distributing connections to App1 across its VM hosts when users connect via different VPN methods.

Correct answers: A (internal load balancer) and E (Azure Application Gateway).

Why:

Internal load balancer: A private (internal) load balancer sits in the front-end subnet and spreads VPN-originated traffic across the VMs hosting App1, without exposing services publicly. This suits home-based P2S and site-to-site VPN traffic.

Azure Application Gateway: A layer-7 load balancer that can distribute HTTP/HTTPS requests across backend VMs, providing application-level routing and features like SSL termination.

Why the others aren’t suitable here:

Public load balancer would expose the app publicly, which isn’t required for VPN-based access.

CDN is for content delivery caching, not load balancing across VMs.

Traffic Manager is a global DNS-based load balancer across regions, not for balancing within a single region/VNet gateway setup.

In short, use an internal load balancer for private, VPN-based distribution, or an Application Gateway for app-level distribution.
Hyderabad, India

Community-Verified AI Explanation Commented on April 12, 2026
Question 153:

Correct answer: Perform a gap analysis to determine needed resources.

Why this is the FIRST action:

The organization already has non-compliance findings from internal audit. You need to understand exactly what is missing to meet regulatory requirements.

A gap analysis identifies the differences between the current controls/processes and the regulatory requirements, and it specifies the resources (people, processes, technologies, budget) needed to close those gaps.

Once gaps and resource needs are known, you can prioritize remediation and then perform a proper risk assessment to determine impact on business operations.

Other options are less appropriate as first steps:

- Create a security exception would bypass remediation and not address regulatory gaps. - Perform a vulnerability assessment targets weaknesses but not regulatory gaps or resource needs. - Assess the risk to business operations is important, but you need the gap/resource context first to accurately assess and prioritize risk.
Key concept: In governance, start with a gap analysis to map current state to regulatory requirements, enabling a actionable remediation plan and informed risk prioritization.
Ahmedabad, India

gw2fjrocha Commented on April 12, 2026
Question 11:

In Question 11, the statements are about three AI ethics principles: transparency, privacy, and inclusiveness.

- Box 1 (Transparency): Yes – transparency helps people understand how the model works. - Box 2 (Privacy): No – data must be protected; privacy is essential. - Box 3 (Inclusiveness): No – inclusiveness means AI should empower all people and remove barriers (e.g., accessibility features), not pricing or
Vagos, Portugal

Community-Verified AI Explanation Commented on April 12, 2026
what are the main topic in esam
Here are the main topics for the AI-900 exam:

Describe AI workloads and considerations — identify common AI workloads and factors like data privacy, security, ethics, fairness, and governance.

Describe fundamental principles of machine learning on Azure — basics of ML (supervised, unsupervised, reinforcement), model training and evaluation, and Azure ML services and workflows.

Describe fundamental concepts of computer vision workloads — tasks such as image classification, object detection, OCR, and related vision capabilities.

Describe fundamental concepts of NLP workloads and common use cases — topics like text analytics, translation, sentiment analysis, speech understanding.

Describe conversational AI workloads and Azure services — chatbots and virtual assistants, using services like Azure Bot Service, Language and Speech services, QnA.

Describe responsible AI — six principles: fairness, accountability, reliability and safety, privacy and security, inclusiveness, and transparency.

Hyderabad, India

Community-Verified AI Explanation Commented on April 12, 2026
Question 40:

The correct answer cannot be determined from the given information because the symbol rate S (in Gbaud/s) is missing.

Relationship: bits per symbol = 40 / S.

Possible cases:

- If S = 20 Gbaud/s ? 40/20 = 2 bits per symbol ? QPSK / 4QAM. - If S = 10 Gbaud/s ? 40/10 = 4 bits per symbol ? DP-QPSK. - If S = 40 Gbaud/s ? 40/40 = 1 bit per symbol ? BPSK.

Example: with S = 20 Gbaud/s, the modulation is QPSK (4QAM).

Cape Town, South Africa

Community-Verified AI Explanation Commented on April 12, 2026
Question 81:

Correct answer: Purchase Azure Active Directory Premium Plan 2 licenses for all users.

Explanation:

Azure AD Identity Protection features, including configuring a user risk policy and a sign-in risk policy, require Azure Active Directory Premium Plan 2.

Premium Plan 1 does not include Identity Protection, so upgrading to P2 is necessary to access these policies.

The other options don’t grant Identity Protection capabilities: MFA registration (B) isn’t the gating factor, security defaults (C) enable MFA but not risk policies, and Defender for Cloud features (D) are unrelated to Identity Protection.

Pfullingen, Germany

Community-Verified AI Explanation Commented on April 12, 2026
Question 80:

Role1 (manage application security groups): use the resource type Microsoft.Network/applicationSecurityGroups (i.e., the Microsoft.Network resource provider).

Role2 (manage Azure Bastion): use the resource type Microsoft.Network/bastions (i.e., the Microsoft.Network resource provider).

Explanation:

Both resources are network-related and live under the Microsoft.Network provider.

Role1 needs permissions on the Application Security Groups resource type; Role2 needs

Pfullingen, Germany

Community-Verified AI Explanation Commented on April 12, 2026
Question 75:

Correct answer: A

Why this is correct:

- The task is to grant a user the ability to manage the properties of VMs in a specific resource group, using the principle of least privilege. - The appropriate role is Virtual Machine Contributor, which allows managing virtual machines (start/stop, configure, update sizes, manage disks, etc.) but does not grant access to modify IAM or other resources outside the VM scope. - Scope the role to the specific resource group RG1lod12345678 to limit permissions to that group only (least privilege).

How to implement (summary of steps):

- Sign in to the Azure portal. - Go to Resource Groups > select RG1lod12345678. -
Pfullingen, Germany

Njabulo Commented on April 12, 2026
question 7 : B,E
Johannesburg, South Africa

njabulo Commented on April 11, 2026
great for exam preparations
Johannesburg, South Africa

Verifying Commented on April 11, 2026
Q62 is engagement
Paris, France

Community-Verified AI Explanation Commented on April 11, 2026
Question 1:

Correct answer: 3.4 defects per million opportunities (DPMO).

Why: In Six Sigma, process performance is measured as DPMO. A true Six Sigma level corresponds to about 3.4 defects per million opportunities.

Riyadh, Saudi Arabia

Community-Verified AI Explanation Commented on April 11, 2026
Question 18:

Answer: False

Why: In Snowflake Secure Data Sharing, a Reader Account is an external account hosted by Snowflake to let partners access shared data. The Data Provider is billed for compute usage in the reader account (compute credits for the warehouses used to run queries), even though the data is read-only. So there are additional compute costs; it’s not zero-cost for the provider.

How to manage: size or pause the reader account’s warehouses to control costs, since query compute in the reader account drives the charges.

Chennai, India

Community-Verified AI Explanation Commented on April 11, 2026
Question 5:

Answer: True

Why: Bulk unloading in Snowflake is done with the COPY INTO command. It supports unloading from a table or from the result of a SELECT statement. Using a SELECT lets you specify exactly which columns and rows to unload (and even compute expressions) before writing to an external stage. For example:

- COPY INTO @stage/path/file.csv FROM (SELECT col1, col2 FROM my_table WHERE date >= '2024-01-01') FILE_FORMAT=(TYPE=CSV);
Chennai, India

Community-Verified AI Explanation Commented on April 11, 2026
Question 40:

Correct answers: B and C.

Why: In Azure AD, deleted objects go into a "Deleted items" state and can be restored within 30 days. The types you can restore are:

- Deleted users - Deleted Office 365 (Microsoft 365) groups - You cannot restore deleted security groups.

So among the listed objects, you can restore the deleted user (User2) and the deleted Office 365 group (Group2).

Pfullingen, Germany

Community-Verified AI Explanation Commented on April 11, 2026
Question 39:

Correct answer: D

Why: The error occurs because guest invitations are blocked by the External collaboration settings. To invite an external partner, you need to allow guest invitations in the Users blade under External collaboration settings (e.g., enable “Users can invite guest users”). The other options do not address guest invitation permissions.

Pfullingen, Germany

Community-Verified AI Explanation Commented on April 11, 2026
Question 35:

Correct answer: B

Why: SAS tokens that are issued against a stored access policy can be revoked by deleting or renaming that policy (changing its signed identifier). Generating new SAS tokens does not invalidate existing ones—the old tokens remain valid until they expire. By deleting/renaming the stored access policy, all SASs tied to that policy are immediately revoked, meeting the goal.

Pfullingen, Germany

Community-Verified AI Explanation Commented on April 10, 2026
Question 367:
Correct answer: A) Social engineering training

Why: It educates employees to recognize phishing indicators and handle suspicious emails safely, directly reducing accidental malware introduction from user actions.

SPF configuration: Helps prevent email spoofing at DNS level but doesn’t train users or reduce click risk.

Simulated phishing campaign: Useful for testing and reinforcing training, but the question asks for the best overall posture; foundational training is more impactful.

Insider threat awareness: Focuses on misuse by trusted insiders, not broadly on malware introduced via phishing.

Recommendation: implement ongoing security awareness training and consider periodic phishing simulations to reinforce the lessons.
Cape Town, South Africa

Community-Verified AI Explanation Commented on April 10, 2026
Question 2:

Correct answer: Memory and Heartbeat.

Why these fit:

- Memory: Shows current RAM usage and pressure. Helps you optimize utilization by indicating how much memory is free, available, and how often the system is paging. - Heartbeat: A liveness indicator that the server or monitoring agent is alive. If the heartbeat fails, you know the host/service is down or unresponsive, which is essential for ensuring overall utilization and availability.

Why not the others:

- Page file: part of virtual memory, but not a direct performance metric by itself in this context. - Services / Application: are things you monitor, not metrics themselves. - CPU: a common utilization metric, but the question’s provided answer uses Memory and Heartbeat.
Innisfil, Canada

Community-Verified AI Explanation Commented on April 10, 2026
Question 4:

Correct answer: one.

Why: An interface is assigned to a single security zone to define its security boundary. Traffic is evaluated based on that zone’s policies, so an interface cannot belong to multiple zones simultaneously.

How to segment on one physical port: use subinterfaces (VLANs). Each subinterface can be assigned to a different zone, allowing multiple security boundaries on the same physical link.

Spain

Community-Verified AI Explanation Commented on April 10, 2026
Question 2:

Correct answer: management plane.

Why: The management (control) plane is responsible for configuration, logging, and reporting. It runs on a separate processor to keep admin tasks isolated from traffic processing, ensuring the firewall remains manageable even under load.

Quick contrast:

- Data plane: forwards user traffic. - Security processing plane: handles security tasks like App-ID, threat prevention.
Netherlands

Community-Verified AI Explanation Commented on April 10, 2026
Question 29:

Correct answer: A) Hashing

Why: Hashing creates a unique digest of the final software version. If the code is tampered with, the hash will change, so you can detect tampering by recomputing and comparing the hash to the original.

What the other options do (and why they’re not correct for tamper detection):

- Encryption: protects confidentiality, not integrity or tamper detection. - Baselines: describe standard configurations to detect deviations, but don’t provide a tamper-evident check on the final artifact itself. - Tokenization: replaces data with tokens for privacy, not for verifying software integrity.

Practical idea: generate a hash (e.g., SHA-256) of the final build, store it securely or
Netherlands

Community-Verified AI Explanation Commented on April 10, 2026
Question 71:
Here’s the mapping for Question 71, which asks to place TCP/IP protocols onto their primary transmission (TCP/IP) layer:

TCP ? Transport layer

- Connection-oriented, reliable delivery.

UDP ? Transport layer

- Connectionless, best-effort delivery.

IP ? Internet layer

- Addressing and routing of packets.

ICMP ? Internet layer

- Control messages used by IP (e.g., echo, unreachable).

ARP ? Link (Data Link) layer

- Resolves IP addresses to MAC addresses on a local network.
Key idea: In TCP/IP, the layers ar
United Kingdom

Community-Verified AI Explanation Commented on April 10, 2026
Question 1:
You’re right to double-check. The correct answer is B.

A reporting snapshot captures data from a report on a scheduled basis and stores it in a custom object for historical analysis.

To meet the requirement “store the details of open opportunities weekly,” schedule a reporting snapshot weekly and store results in a custom object.

For “forecasts and closes monthly,” you can create a separate snapshot that runs monthly (or design the source report to include monthly data). Salesforce supports multiple snapshots, so you can cover both weekly open opportunities and monthly forecast/close data, even though the option here highlights the weekly snapshot approach.

Why the other options aren’t as suitable:

A and D rely on a forecast report and store in a folder, which doesn’t pres
United Kingdom

Community-Verified AI Explanation Commented on April 10, 2026
Question 4:

Correct answer: A. Merge the Customer and Address tables.

Why: You want one row per customer and include the city, state/region, and country. The data is in two tables that relate via Address ID. Merging (joining) the tables on Address ID brings in the address fields for each customer. Other options are not suitable:

- Group by would summarize data, not join. - Transpose would flip rows/columns. - Append would stack tables, not relate them by a key.

How to do it (Power Query Editor):

- Select the Customer table. - Use Merge Queries (or Merge Queries as New). - Choose the Address table and join on Address ID (use Left Outer
United Kingdom

Community-Verified AI Explanation Commented on April 10, 2026
Question 1:

Correct answer: C — test (e.g., test security-policy-match).

Explanation: The test CLI command simulates traffic through the firewall and reveals exactly which elements would be triggered—Security policy rule, NAT translation, static route, or PBF rule—for a given source/destination/service. It’s a troubleshooting tool to validate how traffic would be handled by the policies without sending real traffic.

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