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CompTIA CV0-004 Exam Preparation Guide and PDF Download

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Q87. A cloud developer is creating a static website that customers will be accessing globally. Which of the following services will help reduce latency?

 VPC

 Application load balancer

 CDN

 API gateway

A Content Delivery Network (CDN) is the service that will help reduce latency for a static website accessed globally. CDNs distribute content across multiple geographically dispersed servers, allowing users to connect to a server that is closer to them, thereby reducing the time it takes to load the website.

Q88. An organization needs to retain its data for compliance reasons but only when required. Which of the following would be the most cost-effective type of tiered storage?

 Warm

 Hot

 Archive

 Cold

Archive storage is the most cost-effective type of tiered storage for retaining data that is infrequently accessed and only when required for compliance reasons. It is designed for long-term storage and offers lower storage costs compared to hot, cold, or warm storage tiers.
Reference: Understanding data storage and the various tiers, including archival storage, is part of cloud storage strategies covered in the CompTIA Cloud+ certification.

Q89. A developer at a small startup company deployed some code for a new feature to its public repository. A few days later, a data breach occurred. A security team investigated the incident and found that the database was hacked. Which of the following is the most likely cause of this breach?

 Database core dump

 Hard-coded credentials

 Compromised deployment agent

 Unpatched web servers

Hard-coded credentials within code, especially when deployed in a public repository, are a common security vulnerability. If credentials such as passwords or API keys are embedded in the code, anyone with access to the repository can potentially use them to gain unauthorized access to databases or other sensitive resources. This is a likely cause of the data breach in the scenario described.

Q90. A company recently migrated to a public cloud provider. The company’s computer incident response team needs to configure native cloud services tor detailed logging. Which of the following should the team implement on each cloud service to support root cause analysis of past events? {Select two).

 Log retention

 Tracing

 Log aggregation

 Log rotation

 Hashing

 Encryption

For detailed logging to support root cause analysis of past events, the team should implement log retention to ensure logs are kept for the necessary amount of time and log aggregation to compile logs from various sources for easier analysis and correlation.
Reference: Log management practices, including retention and aggregation, are part of the cloud management strategies covered in the CompTIA Cloud+ curriculum, particularly in the domain of technical operations.

Q91. Which of the following are best practices when working with a source control system? (Select two).

 Merging code often

 Pushing code directly to production

 Performing code deployment

 Maintaining one branch for all features

 Committing code often

 Initiating a pull request

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.

Q92. Which of the following is a field of computer science that enables computers to identify and understand objects and people in images and videos?

 Image reconstruction

 Facial recognition

 Natural language processing

 Computer vision

Computer vision is a field of computer science that enables computers to identify and understand objects and people in images and videos. It involves the development of systems that can capture and interpret visual information from the world, similar to the way humans do.References: The application of computer vision and its role in cloud services, particularly in relation to AI and machine learning capabilities, is discussed in CompTIA Cloud+.

Q93. 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?

 Restart the web server.

 Configure TLS 1.2 or newer.

 Update the web server.

 Review logs on the WAF

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.

Q94. A network administrator is budding a site-to-site VPN tunnel from the company’s headquarters office 10 the company’s public cloud development network. The network administrator confirms the following:
The VPN tunnel is established on the headquarter office firewall.
While inside the office, developers report that they cannot connect to the development network resources.
While outside the office on a client VPN, developers report that they can connect to the development network resources.
The office and the client VPN have different IP subnet ranges.
The firewall flow logs show VPN traffic is reaching the development network from the office.
Which of the following is the next step the next network administrator should take to troubleshoot the VPN tunnel?

 Review the development network routing table.

 Change the ciphers on the site-to-site VPN.

 Restart the site-to-site VPN tunnel.

 Check the ACLS on the development workloads

The next step in troubleshooting the VPN tunnel issue is to review the development network routing table.
This action will help determine if the routing configurations are correctly directing traffic from the headquarters office through the VPN tunnel to the development network resources. Proper routing ensures that data packets find their way to the correct destination within the cloud environment, which is critical for establishing successful communication between different network segments.References: CompTIA Cloud+ materials stress the importance of networking fundamentals in cloud environments, including VPN configurations and routing, to ensure secure and efficient connectivity between on-premises infrastructure and cloud resources.

Q95. An organization’s internal security team mandated that public cloud resources must be accessible only by a corporate VPN and not by direct public internet access. Which of the following would achieve this objective?

 WAF

 ACL

 VPC

 SSH

A Virtual Private Cloud (VPC) allows users to create a secluded section of the public cloud where resources can be launched in a defined virtual network. This enables an organization to have a section of the cloud that is secured and isolated from the public internet, thus, access to public cloud resources can be restricted to only a corporate VPN.

Q96. A cloud engineer is reviewing a disaster recovery plan that includes the following requirements:
– System state, files, and configurations must be backed up on a weekly basis.
– The system state, file, and configuration backups must be tested
annually.
Which of the following backup methods should the engineer implement for the first week the plan is executed?

 Differential

 Incremental

 Snapshot

 Full

A full backup method should be implemented for the first week the disaster recovery plan is executed. This will ensure that a complete copy of the system state, files, and configurations are backed up. Subsequent backups can be differential or incremental as per the plan.

Q97. The QA team is testing a newly implemented clinical trial management (CTM) SaaS application that uses a business intelligence application for reporting. The UAT users were instructed to use HTTP and HTTPS.
Refer to the application dataflow:
1A – The end user accesses the application through a web browser to enter and view clinical data.
2A – The CTM application server reads/writes data to/from the database server.
1B – The end user accesses the application through a web browser to run reports on clinical data.
2B – The CTM application server makes a SOAP call on a non-privileged port to the BI application server.
3B – The BI application server gets the data from the database server and presents it to the CTM application server.
When UAT users try to access the application using https://ctm.app.com or http://ctm.app.com, they get a message stating: “Browser cannot display the webpage.” The QA team has raised a ticket to troubleshoot the issue.
INSTRUCTIONS
You are a cloud engineer who is tasked with reviewing the firewall rules as well as virtual network settings.
You should ensure the firewall rules are allowing only the traffic based on the dataflow.
You have already verified the external DNS resolution and NAT are working.
Verify and appropriately configure the VLAN assignments and ACLs. Drag and drop the appropriate VLANs to each tier from the VLAN Tags table. Click on each Firewall to change ACLs as needed.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

On firewall 3, change the DENY 0.0.0.0 entry to rule 3 not rule 1.

Q98. Which of the following service options would provide the best availability for critical applications in the event of a disaster?

 Edge computing

 Cloud bursting

 Availability zones

 Multicloud tenancy

Availability zones provide the best availability for critical applications in the event of a disaster. They are distinct locations within a cloud region that are engineered to be isolated from failures in other availability zones, thus providing redundancy and failover capabilities, which is essential for maintaining high availability of critical applications.
Reference: The concept of availability zones and their importance in disaster recovery and high availability is covered under the domain of Management and Technical Operations in the CompTIA Cloud+ objectives.

Q99. A newly configured VM fails to run application updates despite having internet access. The updates download automatically from a third-party network. Given the following output:

Which of the following troubleshooting steps would be best to take?

 Checking DNS configurations

 Reconfiguring routing protocols

 Testing the IP address configuration

 Running a trace to the router

The best troubleshooting step to take given the output is to check DNS configurations. The failure to resolve the “na.updateserver.net” domain suggests a DNS resolution issue, which could be due to incorrect DNS settings, a failure in the DNS service, or an issue with the DNS server itself.
Reference: Troubleshooting DNS issues is a crucial skill in cloud management, as DNS plays a fundamental role in network connectivity and access to resources. It is covered under Cloud Concepts in the CompTIA Cloud+ curriculum.

Q100. A company recently set up a CDN for its photography and image-sharing website. Which of the following is the most likely reason for the company’s action?

 To eliminate storage costs

 To improve site speed

 To enhance security of static assets

 To prevent unauthorized access

The most likely reason for setting up a Content Delivery Network (CDN) is to improve site speed, especially for a photography and image-sharing website. CDNs cache content at edge locations closer to end-users, significantly reducing load times for static assets like images and videos.
This enhancement in speed can improve user experience and site performance.

Q101. 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?

 Use laC to deploy the laaS infrastructure.

 Convert the containers to VMs.

 Deploy the containers over SSH.

 Use private repositories for the containers.

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 to anyone.

Q102. A software engineer at a cybersecurity company wants to access the cloud environment. Per company policy, the cloud environment should not be directly accessible via the internet. Which of the following options best describes how the software engineer can access the cloud resources?

 SSH

 Bastion host

 Token-based access

 Web portal

A bastion host is the best option described for accessing cloud resources without direct internet access. It acts as a secure gateway to access internal networks from external sources and is often used in conjunction with other security measures such as SSH for secure connections.References: The use of bastion hosts as a secure access point to cloud resources is a security best practice covered in the CompTIA Cloud+ certification’s domain on cloud security.

Q103. Which of the following best explains the concept of migrating from on premises to the cloud?

 The configuration of a dedicated pipeline to transfer content to a remote location

 The creation of virtual instances in an external provider to transfer operations of selected servers into a new. remotely managed environment

 The physical transportation, installation, and configuration of company IT equipment in a cloud services provider’s facility

 The extension of company IT infrastructure to a managed service provider

Migrating from on-premises to the cloud generally involves creating virtual instances in an external provider’s environment and transferring the operations of selected servers to this new, remotely managed setup. This process allows organizations to leverage the cloud provider’s resources and services.
Reference: The migration process and strategies are topics included in the Business Principles of Cloud Environments within the CompTIA Cloud+ curriculum.

Q104. A systems administrator is provisioning VMs according to the following requirements:
* A VM instance needs to be present in at least two data centers.
. During replication, the application hosted on the VM tolerates a maximum latency of one second.
* When a VM is unavailable, failover must be immediate.
Which of the following replication methods will best meet these requirements?

 Snapshot

 Transactional

 Live

 Point-in-time

Live replication is the process of continuously copying data in real-time to ensure that an exact copy is available in another location. Given the requirement for immediate failover and the presence of the VM instance in at least two data centers, live replication is the best method to meet the one-second maximum latency tolerance and ensure immediate availability in the event of a VM becoming unavailable. Reference: CompTIA Cloud+ Study Guide (Exam CV0-004) – Chapter on Disaster Recovery and Replication Methods

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