CompTIA CV0-004 Online Practice Questions and Exam Preparation

CompTIA CV0-004 Online Questions & Answers

• Question 21:

  An organization is currently deploying a private cloud model. All devices should receive the time from the local environment with the least administrative effort.

  Which of the following ports needs to be opened to fulfill this requirement?

  A. 53
  B. 67
  C. 123
  D. 161
  C. 123

  ---

  Explanation

  Port 123 is what needs to be opened to ensure all devices receive the time from the local environment with the least administrative effort in a private cloud model. Port 123 is the port used by NTP (Network Time Protocol), which is a protocol that synchronizes the clocks of network devices and systems. NTP can help to ensure accurate and consistent time across different devices and systems in a cloud environment, which can facilitate coordination, communication, logging, auditing, etc.

  References:

  https://www.sciencedirect.com/topics/computer-science/network-time-protocol#:~:text=NTP%20is%20a%20built%2Don,for%20example%2C%20a%20desktop).

• Question 22:

  A company uses containers stored in Docker Hub to deploy workloads (or its laaS infrastructure. The development team releases changes to the containers several times per hour.

  Which of the following should a cloud engineer do to prevent the proprietary code from being exposed to third parties?

  A. Use laC to deploy the laaS infrastructure.
  B. Convert the containers to VMs.
  C. Deploy the containers over SSH.
  D. Use private repositories for the containers.
  D. Use private repositories for the containers.

  ---

  Explanation

  To prevent proprietary code from being exposed to third parties, a cloud engineer should use private repositories for the containers. Private repositories ensure that access to container images is restricted and controlled, unlike public repositories where images are accessible toanyone.

  References:

  The concept of using private repositories for protecting proprietary code is part of cloud security best practices, which is covered under the Governance, Risk, Compliance, and Security domain of the CompTIA Cloud+ certification.

• Question 23:

  A cloud engineer needs to upgrade the pip python module by running the following command:

  python.exe -m pip install -upgrade pip.

  However, after the command is entered, the engineer receives the following error message: WARNINg: Retrying (Retry(TOTAL=4 connect=None, read=None, redirect=None, status=None) after connection broken by 'SSLError(SSLCertVerificationError(1, [SSL:

  /packages/07/51/abasciekdkgiyiykrieeeotlriturjaab/pip-27.4.3.py3-none-any.whl.

  Given this scenario, which of the following is more than likely the cause of the issue?

  A. Syntax error with the command entered
  B. Python version incompatibility
  C. Broken TLS communication with no internet access
  D. Certificate for package repository is not trusted
  D. Certificate for package repository is not trusted

  ---

  Explanation

  The error message specifically indicates SSLCertVerificationError, which occurs when Python cannot validate the SSL/TLS certificate presented by the package repository. This typically happens when the repository's certificate is untrusted, missing from the local trust store, or intercepted by a proxy using an untrusted certificate. The error shows that connectivity exists because the package URL is being reached, but certificate validation is failing.

• Question 24:

  Which of the following package managers would most likely be used with Ubuntu Linux?

  A. YUM
  B. DNF
  C. Pacman
  D. APT
  D. APT

  ---

  Explanation

  APT (Advanced Package Tool) is the package manager used in Ubuntu Linux and other Debian-based distributions. It manages software installation, updates, and dependencies using the.deb package format.

  Common commands include apt-get install, apt update, and apt upgrade.

• Question 25:

  Which of the following communication methods between on-premises and cloud environments would ensure minimal-to-low latency and overhead?

  A. Site-to-site VPN
  B. Peer-to-peer VPN
  C. Direct connection
  D. peering
  C. Direct connection

  ---

  Explanation

  A direct connection between on-premises and cloud environments involves a dedicated, private connection that does not traverse the public internet. This setup ensures minimal-to-low latency and overhead, providing more consistent network performance and reliability compared to other methods like VPNs or public internet connections, making it suitable for high-volume or latency-sensitive applications.

• Question 26:

  A systems engineer tries to mount an iSCSI LUN to a VM host in a data center, but the host does not discover any iSCSI targets. A sample of the switch configuration is shown in the following image: GigabitEthernet 1/0/1 description "Development Network Uplink to VM Host A" access vlan 24.

  GigabitEthernet 1/0/2 description "Storage Network Uplink to VM Host A" access vlan 24 spanning-tree portfast mtu 9216.

  GigabitEthernet 1/0/3 description "Lights-Out Management VM Host A" access vlan 20 spanning-tree portfast.

  GigabitEthernet 1/0/4 description "SAN Management Controller A" access vlan 20.

  GigabitEthernet 1/0/5 description "SAN Management Controller B" access vlan 20 spanning-tree portfast.

  GigabitEthernet 1/0/6 description "SAN iSCSI Controller A" access vlan 25 spanning-tree portfast.

  GigabitEthernet 1/0/7 description "SAN iSCSI Controller B(TM) access vlan 25 spanning-tree portfast.

  Which of the following configuration changes would most likely resolve the discovery issues?

  A. Disabling Gigabit Ethernet 1/0/7
  B. Changing the MTU on Gigabit Ethernet 1/0/2
  C. Changing the access VLAN for Gigabit Ethernet 1/0/2 to 25
  D. Enabling jumbo frames on Gigabit Ethernet 1/0/6 and Gigabit Ethernet 1/0/7
  C. Changing the access VLAN for Gigabit Ethernet 1/0/2 to 25

  ---

  Explanation

  The VM host's storage uplink (Gi1/0/2) is in VLAN 24, while the iSCSI controllers (Gi1/0/6 and Gi1/0/7) are in VLAN 25. iSCSI target discovery requires Layer 2 connectivity on the same VLAN/subnet; moving

  Gi1/0/2 to VLAN 25 restores discovery.

• Question 27:

  An organization's web application experiences periodic bursts of traffic when a new video is launched.

  Users are reporting poor performance in the middle of the month.

  Which of the following scaling approaches should the organization use to scale based on forecasted traffic?

  A. Scheduled
  B. Manual
  C. Event
  D. Load
  A. Scheduled

  ---

  Explanation

  For periodic bursts of traffic that are predictable, such as when a new video is launched, a scheduled scaling approach is suitable. This strategy involves scaling resources based on forecasted or known traffic patterns, ensuring that the infrastructure can handle the load during expected peak times.

  References:

  The use of scheduled scaling to manage predictable traffic increases is discussed within the Management and Technical Operations section of the CompTIA Cloud+ exam objectives.

• Question 28:

  Which of the following compute services is the best for quick and easy provisioning?

  A. Cluster
  B. Container
  C. Server less
  D. Snapshot
  C. Server less

  ---

  Explanation

  Serverless computing provides the quickest and easiest provisioning because the cloud provider automatically manages the underlying infrastructure, scaling, and resource allocation. This allows applications to be deployed and run without provisioning or managing servers, significantly reducing setup time and operational effort.

• Question 29:

  A security engineer recently discovered a vulnerability in the operating system of the company VMs. The operations team reviews the issue and decides all VMs need to be updated from version 3.4.0 to 3.4.1.

  Which of the following best describes the type of update that will be applied?

  A. Consistent
  B. Major
  C. Minor
  D. Ephemeral
  C. Minor

  ---

  Explanation

  The update from version 3.4.0 to 3.4.1 is considered a minor update, typically involving small bug fixes or security patches that do not include major feature changes or improvements.

  References:

  CompTIA Cloud+ Study Guide (Exam CV0-004) - Chapter on Systems Management

• Question 30:

  A developer is testing code that will be used to deploy a web farm in a public cloud. The main code block is a function to create a load balancer and a loop to create 1.000 web servers, as shown below:

  

  The developer runs the code against the company's cloud account and observes that the load balancer is successfully created, but only 100 web servers have been created.

  Which of the following should the developer do to fix this issue?

  A. Request an increase of Instance quota.
  B. Run the code multiple times until all servers are created.
  C. Check the my_web_server () function to ensure it is using the right credentials.
  D. Place the my_load_balancer () function after the loop.
  A. Request an increase of Instance quota.

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  Explanation

  The developer should request an increase of the instance quota from the cloud provider. Cloud services often have a limit on the number of instances that can be created, which is known as an instance quota. If the load balancer is successfully created but the number of web servers is limited to 100, it suggests that the quota has been reached. Increasing the quota will allow the creation of additional web server instances up to the desired number.

  References:

  The scenario reflects an understanding of cloud resource management and limitations, which is a part of the CompTIA Cloud+ curriculum, specifically under the domain of Management and Technical Operations.