QUESTION: 25

It is imperative to ensure that internet-facing applications are protected from DDoS attacks, data theft, and bot attacks.
Which feature of Cloud Internet Services (CIS) is being discussed here?

Security
Performance
Reliability
Scalability

Answer(s): A

Explanation:

The feature of Cloud Internet Services (CIS) being discussed is Security.

CIS Security Features: IBM Cloud Internet Services provides robust security measures to protect internet-facing applications from a variety of attacks, including Distributed Denial of Service (DDoS), data theft, and bot attacks. These services are crucial for securing applications and data in the cloud.

Protection Mechanisms: CIS integrates multiple layers of security features, such as Web Application Firewall (WAF), DDoS protection, and threat intelligence, which work together to secure applications from cyber threats.

Reference from IBM Cloud Professional Architect Materials:

The IBM Cloud Internet Services documentation highlights the focus on security to protect applications from DDoS attacks, data breaches, and other threats.

Other options are incorrect:

B . Performance relates to speed and efficiency, not protection.

C . Reliability deals with system uptime and consistency.

D . Scalability is about handling increased load, not security.

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QUESTION: 26

Which OSI Layers does IBM Cloud Direct Link utilize?

Layers 2 and 3
Layers 1 thru 7
Layers 3 and 4
Layers 1 and 2

Answer(s): A

Explanation:

IBM Cloud Direct Link utilizes Layers 2 and 3 of the OSI model.

Layer 2 (Data Link Layer) and Layer 3 (Network Layer): IBM Cloud Direct Link provides private connectivity from an on-premises data center to the IBM Cloud through dedicated connections. At Layer 2, it provides direct network paths, while at Layer 3, it handles routing between networks.

Direct Link Functionality: Direct Link offers high-performance, secure connectivity options for hybrid cloud solutions, making it an essential service for enterprises that require a secure and efficient connection to the IBM Cloud.

Reference from IBM Cloud Professional Architect Materials:

The IBM Cloud Direct Link documentation specifies that it operates at OSI Layers 2 and 3 to provide dedicated connectivity options.

Other options are incorrect:

B . Layers 1 thru 7 encompasses all OSI layers, which is incorrect.

C . Layers 3 and 4 include the transport layer, which Direct Link does not utilize directly.

D . Layers 1 and 2 omits Layer 3, which is crucial for network routing.

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QUESTION: 27

IBM Cloud offers two content delivery networks: CDN and CIS.
Which two networks underpin these two offerings?

Limelight and KeyCDN
Akamai and Cloudflare
CDN 77 and CloudFront
Cloudflare and Fastly

Answer(s): B

Explanation:

IBM Cloud offers two content delivery networks (CDNs): C, D, N and Cloud Internet Services (CIS). These two offerings are underpinned by the networks of Akamai and Cloudflare, respectively.

IBM Cloud CDN: IBM Cloud uses Akamai's global network for its Content Delivery Network (CDN) service. Akamai is one of the largest and most trusted CDN providers globally, known for its expansive network that delivers content with low latency and high availability.

IBM Cloud Internet Services (CIS): This service is built on Cloudflare's global network and offers a suite of services, including a CDN, DDoS protection, web application firewall (WAF), and more. Cloudflare's network spans many data centers worldwide, optimizing traffic delivery and securing applications.

Comparison with Other Options:

Limelight and KeyCDN (A), CDN 77 and CloudFront (C), Cloudflare and Fastly (D): These are other CDN providers but do not represent the networks underpinning IBM Cloud's CDN offerings.

Reference:

IBM Cloud CDN Documentation

IBM Cloud Internet Services (CIS) Documentation

IBM Cloud Architect Exam Study Guide

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QUESTION: 28

What is the first thing to do when troubleshooting an IBM Cloud access issue?

Verify the ACLs associated with the resource allow the user's username at minimum Read or View access
Make sure the user is a member of the Operator role, so they can remove the resource if necessary
Make sure that the user has access to the service or service instance through IAM
Verify the user has opened a case with IBM Cloud support to access the service instance containing the resource

Answer(s): C

Explanation:

The first step in troubleshooting an IBM Cloud access issue is to ensure that the user has the appropriate permissions to access the service or service instance through Identity and Access

Management (IAM). IBM Cloud uses IAM to manage user access to resources and services, and improper or insufficient permissions are a common cause of access issues.

Checking IAM Permissions: Users must be granted the correct roles and access policies within IAM to interact with specific IBM Cloud resources. This involves verifying that the user has the necessary level of access (such as Viewer, Editor, or Administrator roles) for the service or resource in question.

Why IAM Access Matters: Without proper IAM access, users will be unable to view, modify, or delete resources, and access issues may manifest as permission errors, inability to see resources, or inability to interact with the service.

Comparison with Other Options:

A (Verify the ACLs): While ACLs are important, IAM access is the primary consideration in IBM Cloud.

B (Operator role): The Operator role may not necessarily grant sufficient access for all use cases.

D (Open a support case): This should be a subsequent step if IAM permissions are correctly configured.

Reference:

IBM Cloud Identity and Access Management (IAM) Documentation

IBM Cloud Architect Exam Study Guide

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Free C1000-172 Exam Braindumps (page: 7)

QUESTION: 25

Explanation:

QUESTION: 26

Explanation:

QUESTION: 27

Explanation:

Reference:

QUESTION: 28

Explanation:

Reference: