CV0-004 Practice Test 3 — 10 Questions

Question 1

A cloud administrator is configuring an alert for an Azure virtual machine. The alert should trigger when the average CPU percentage exceeds 90% for more than 10 minutes. Which Azure service should be used to create this metric alert?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Azure Monitor Alerts. Azure Monitor Alerts allow you to create metric alerts based on conditions like CPU percentage thresholds and evaluation periods.

Answer

Azure Advisor

Answer

Azure Log Analytics

Answer

Azure Security Center

Question 2

A small business hosts a web application on a single cloud server. The server has 2 vCPUs and 4 GB RAM. Recently, the application crashes when the number of concurrent users exceeds 50. The administrator checks the system logs and finds out-of-memory (OOM) errors. What is the best course of action to resolve this issue without redesigning the application?

Accepted Answer

Increase the server's RAM to 8 GB. The best course of action is to increase the server's RAM to 8 GB (Option C). The OOM errors indicate that the current 4 GB RAM is insufficient for 50+ concurrent users. Increasing RAM directly addresses the memory shortage without requiring application changes or redesign. Option A (load balancer and another server) adds complexity and cost, and may not resolve the memory issue on the single server if the application is not stateless. Option B (code optimization) is a redesign effort that may not be feasible as a quick fix. Option D (enabling swap space) can lead to severe performance degradation because swapping is much slower than RAM, and may still cause crashes under high load.

Answer

Add a load balancer and another server

Answer

Reduce the application's memory footprint by code optimization

Answer

Enable swap space on the server

Question 3

A cloud team is implementing a CI/CD pipeline for a containerized application. They want to automatically build a Docker image, push it to a registry, and deploy it to a Kubernetes cluster. Which TWO tools from the options below are commonly used as part of this pipeline? (Select 2)

Accepted Answer

Jenkins. Jenkins and GitLab CI are both CI/CD tools that can build Docker images, push to registries, and deploy to Kubernetes. Terraform and CloudFormation are IaC tools, not CI/CD. Docker Compose is for local development.

Answer

CloudFormation

Answer

Terraform

Answer

Docker Compose

Question 4

Which of the following is a stateless network access control that requires explicit allow rules for both inbound and outbound traffic?

Accepted Answer

Network ACL. Network ACLs (NACLs) are stateless; security groups are stateful.

Answer

Security group

Answer

DDoS protection

Answer

Web application firewall

Question 5

A cloud administrator is investigating why a virtual machine is running slowly. The administrator checks the hypervisor performance metrics. Which TWO of the following metrics indicate CPU contention? (Choose TWO.)

Accepted Answer

High CPU ready time. CPU ready time (option A) and co-stop time (option C) are both indicators of CPU contention. Ready time is time a VM is ready to run but waiting for CPU; co-stop time is time a VM is stopped because another vCPU in the same VM is contending. Option E (High CPU usage percentage) is normal utilization, not contention. Option B (High disk queue depth) is storage-related. Option D (High memory ballooning) is memory-related.

Answer

High disk queue depth

Answer

High memory ballooning

Answer

High CPU usage percentage

Question 6

An organization wants to minimize costs for a batch processing workload that runs nightly for 2 hours and can tolerate interruptions. Which pricing model is most cost-effective?

Accepted Answer

Spot instances. Spot instances offer significant discounts but can be terminated; suitable for fault-tolerant, interruptible workloads.

Answer

On-demand instances

Answer

Reserved instances

Answer

Dedicated hosts

Question 7

A company plans to use a public cloud to host a static website with minimal configuration. The website content is stored in an object storage bucket. Users access the site via a custom domain name. Which cloud service should the company use to serve the content with low latency globally?

Accepted Answer

Content delivery network (CDN) with the object storage as origin. A CDN caches static content at edge locations worldwide, reducing latency for global users. By configuring the object storage bucket as the origin, the CDN pulls content on cache miss and serves it from the nearest edge node. This meets the requirement of minimal configuration while providing low-latency delivery via a custom domain.

Answer

Reverse proxy server in each region

Answer

DNS-based round-robin to multiple storage buckets

Answer

Load balancer distributing traffic to multiple object storage endpoints

Question 8

A company is migrating to GCP and needs to ensure data encryption in transit for all external communications. Which THREE measures should be implemented? (Choose three.)

Accepted Answer

Configure load balancer to redirect HTTP to HTTPS. TLS 1.2+ ensures strong encryption in transit. Certificate management ensures valid certificates. Enforcing HTTPS via load balancer policies redirects HTTP traffic.

Answer

Disable TLS for internal VPC traffic

Answer

Enable AES-256 encryption at rest

Question 9

Refer to the exhibit. A cloud engineer is reviewing logs from an EC2 instance. Which of the following is the MOST likely root cause of the application failure?

Accepted Answer

The disk space reached 100% capacity, preventing the application from writing logs. When disk space reaches 100% capacity, the operating system cannot write new data to the filesystem. Since the application relies on writing logs (and potentially other data) to disk, it will fail when it cannot perform these write operations. This is a common root cause in cloud environments where log rotation is not configured or monitoring thresholds are not set.

Answer

The application experienced a segmentation fault due to a code bug

Answer

The instance ran out of memory because the application had a memory leak

Answer

The instance was stopped by the cloud provider due to a license violation

Question 10

During a cloud deployment, a virtual machine is created from a custom image. After boot, the VM is not accessible via SSH. Which of the following should the administrator check FIRST?

Accepted Answer

The security group rules for inbound SSH. The most common reason a newly deployed VM is inaccessible via SSH is that the security group or network ACL does not permit inbound TCP port 22 traffic. Security groups act as a virtual firewall at the instance level, and if the rule allowing SSH from the administrator's IP is missing or misconfigured, the connection will be refused. This should be the first check because it is a frequent misconfiguration during deployment.

Answer

The boot volume is encrypted

Answer

The hypervisor version compatibility

Answer

The image's OS license activation status