CompTIA CompTIA Certifications CV0-004 Questions & Answers

• Question 241:

  Which of the following are best practices when working with a source control system? (Select two).

  A. Merging code often

  B. Pushing code directly to production

  C. Performing code deployment

  D. Maintaining one branch for all features

  E. Committing code often

  F. Initiating a pull request

  Correct Answer: AE

  Best practices when working with a source control system include merging code often to ensure that changes from different team members are integrated regularly, reducing integration issues. Committing code often is also recommended to save small changes frequently, which helps in tracking changes and resolving issues more effectively.References: Source control system best practices are part of the software development and deployment guidelines discussed in the CompTIA Cloud+ examination objectives.

• Question 242:

  A cloud engineer has provisioned a VM for a high-frequency trading application. After the VM is put into production, users report high latency in trades. The engineer checks the last six hours of VM metrics and sees the following:

  1.

  CPU utilization is between 30% to 60%.

  2.

  Networkln is between 50Kbps and 70Kbps.

  3.

  NetworkOut is between 3.000Kpbs and 5.000Kbps.

  4.

  DiskReadOps is at 30.

  5.

  DiskWriteOps is at 70

  6.

  Memory utilization is between 50% and 70%.

  Which of the following steps should the engineer take next to solve the latency issue?

  A. Move to a network-optimized instance type as the network throughput is not enough.

  B. Modify the disk IOPS to a higher value as the disk IO is being bottlenecked at 100 IOPS.

  C. Increase the memory of the instance as the high-frequency trading application requires more RAM.

  D. Increase the instance size to allocate more vCPUs as the CPU utilization is very high.

  Correct Answer: A

  Since the NetworkOut is significantly higher than NetworkIn and considering the nature of a high-frequency trading application, the issue most likely lies with network throughput. Moving to a network-optimized instance type would provide higher network bandwidth, which can reduce latency in trades.References: This solution is derived from the Management and Technical Operations domain of the CompTIA Cloud+ objectives, focusing on performance optimization for cloud services.

• Question 243:

  An DevOps engineer is receiving reports that users can no longer access the company's web application after hardening of a web server. The users are receiving the following error:

  ERR_SSLJ/ERSION_OR_CIPHER_MISMATCH.

  Which of the following actions should the engineer take to resolve the issue?

  A. Restart the web server.

  B. Configure TLS 1.2 or newer.

  C. Update the web server.

  D. Review logs on the WAF

  Correct Answer: B

  To resolve the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error after hardening a web server, the engineer should configure the server to use TLS 1.2 or newer. This error often occurs when the server or client supports an outdated version of SSL/TLS or incompatible cipher suites. Updating to a modern, secure version of TLS ensures compatibility and enhances security.References: The CompTIA Cloud+ certification includes governance, risk, compliance, and security for the cloud, emphasizing the importance of implementing up-to-date security protocols like TLS to protect data in transit and ensure secure communications in cloud environments.

• Question 244:

  A company runs a discussion forum that caters to global users. The company's monitoring system reports that the home page suddenly is seeing elevated response times, even though internal monitoring has reported no issues or changes. Which of the following is the most likely cause of this issue?

  A. Cryptojacking

  B. Human error

  C. DDoS

  D. Phishing

  Correct Answer: C

  Elevated response times without reported issues or changes internally could indicate a Distributed Denial of Service (DDoS) attack, where multiple systems flood the bandwidth or resources of a targeted system, usually one or more web servers. References: CompTIA Security+ Guide to Network Security Fundamentals by Mark Ciampa.

• Question 245:

  Which of the following would allow a cloud engineer to flatten a deeply nested JSON log to improve readability for analysts?

  A. Grafana

  B. Kibana

  C. Elasticsearch

  D. Logstash

  Correct Answer: D

  Logstash can be used to flatten a deeply nested JSON log, which would improve readability for analysts. Logstash is a data processing pipeline that ingests data from various sources, transforms it, and then sends it to a "stash" like Elasticsearch. References: CompTIA Cloud+ Study Guide (V0-004) - Chapter on Cloud Data Management

• Question 246:

  A systems administrator notices a surge of network traffic is coming from the monitoring server. The administrator discovers that large amounts of data are being downloaded to an external source. While investigating, the administrator reviews the following logs:

  

  Which of the following ports has been compromised?

  A. Port 20

  B. Port 22

  C. Port 443

  D. Port 4443

  E. Port 8048

  Correct Answer: E

  Based on the logs provided, the port that has been compromised is Port 8048. The state "TIME_WAIT" indicates that this port was recently used to establish a connection that has now ended. This could be indicative of the recent activity where large amounts of data were downloaded to an external source, suggesting a potential security breach. References: CompTIA Cloud+ Study Guide (V0-004) by Todd Montgomery and Stephen Olson

• Question 247:

  A systems administrator is configuring backups on a VM and needs the process to run as quickly as possible, reducing the bandwidth on the network during all times from Monday through Saturday. In the event of data corruption, the management team expects the mean time to recovery to be as low as possible.

  Which of the following backup methods can the administrator use to accomplish these goals?

  A. Incremental backup daily to the cloud

  B. Full backup on Sunday and incremental backups on all other days of the week

  C. Differential backup daily to the cloud

  D. Incremental backups during off-hours on Monday, Wednesday, and Friday

  Correct Answer: B

  To achieve a quick backup process and reduce bandwidth use, the administrator should perform a Full backup on Sunday and incremental backups on all other days of the week. This method ensures that only the changes made since the last full backup are copied, reducing the amount of data that needs to be transferred each time, and thus the time and bandwidth required.References: CompTIA Cloud+ Study Guide (V0-004) by Todd Montgomery and Stephen Olson

• Question 248:

  A DevOps engineer is integrating multiple systems. Each system has its own API that exchanges data based on different application-level transactions. Which of the following delivery mechanisms would best support this integration?

  A. Enterprise service bus

  B. Socket

  C. RPC

  D. Queue

  Correct Answer: A

  An Enterprise Service Bus (ESB) is designed to facilitate application integration by providing a centralized architecture for high-level, message-based, and event-driven communication between different systems. It is particularly well-suited for integrating multiple systems with their own APIs because it can handle various data formats and protocols, enabling different applications to communicate with each other seamlessly. References: CompTIA Cloud+ Certification Study Guide (V0-004) by Scott Wilson and Eric Vanderburg

• Question 249:

  A company experienced a data leak through its website. A security engineer, who is investigating the issue, runs a vulnerability scan against the website and receives the following output:

  

  Which of the following is the most likely cause of this leak?

  A. RTMP port open

  B. SQL injection

  C. Privilege escalation

  D. Insecure protocol

  Correct Answer: D

  The data leak is most likely caused by the use of an insecure protocol. The vulnerability scan output shows that port 21/tcp for FTP (File Transfer Protocol) is open. FTP is known for transmitting data unencrypted, which could allow sensitive data to be intercepted during transfer.References: The security risks associated with the use of insecure or unencrypted protocols are covered under cloud security best practices in the CompTIA Cloud+ curriculum.

• Question 250:

  Servers in the hot site are clustered with the main site.

  A. Network traffic is balanced between the main site and hot site servers.

  B. Offline server backups are replicated hourly from the main site.

  C. All servers are replicated from the main site in an online status.

  D. Which of the following best describes a characteristic of a hot site?

  Correct Answer: C

  When servers in a hot site are clustered with the main site, it indicates that all servers are replicated from the main site in an online status. This means that the hot site maintains a live, real-time copy of data and applications, ensuring immediate availability in the event of a failure at the main site. Unlike options A and B, which describe load balancing and backup strategies respectively, clustering with a hot site as described in option C ensures that the hot site can take over with minimal downtime, maintaining business continuity. References: CompTIA Cloud+ CV0-004 Study Guide and Official CompTIA Content