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CV0-004 Practice Questions

Question # 1
Which of the following is a difference between a SAN and a NAS?
A. A SAN works only with fiber-based networks.
B. A SAN works with any Ethernet-based network.
C. A NAS uses a faster protocol than a SAN
D. A NAS uses a slower protocol than a SAN.


D. A NAS uses a slower protocol than a SAN.

A NAS (Network Attached Storage) typically uses file-level protocols such as NFS or SMB, which are generally considered slower and less efficient than the block-level protocols used by SANs (Storage Area Networks), such as iSCSI or Fibre Channel. SANs are designed for high performance and low latency, making them more suitable for applications requiring fast and efficient storage access.

Question # 2
A cloud engineer needs to deploy a new version of a web application to 100 servers. In the past, new version deployments have caused outages. Which of the following deployment types should the cloud engineer implement to prevent the outages from happening this time?
A. Rolling
B. Blue-green
C. Canary
D. Round-robin


C. Canary

Explanation:

A canary deployment is a pattern that reduces the risk of introducing a new software version in production by slowly rolling out the change to a small subset of users before rolling it out to the entire infrastructure. It's an effective strategy to prevent outages since it allows for monitoring and quick rollback if issues arise without affecting all users.

References:

Canary releases are part of deployment strategies that can help mitigate the risk of outages during updates, a concept included in the CompTIA Cloud+ curriculum.


Question # 3
An IT security team wants to ensure that the correct parties are informed when a specific user account is signed in. Which of the following would most likely allow an administrator to address this concern?
A. Creating an alert based on user sign-in criteria
B. Aggregating user sign-in logs from all systems
C. Enabling the collection of user sign-in logs
D. Configuring the retention of all sign-in logs


A. Creating an alert based on user sign-in criteria

Explanation:

To ensure that the correct parties are informed when a specific user account is signed in, the best action is to create an alert based on user sign-in criteria. This alert can notify administrators or security personnel when the specified event occurs.References: Security monitoring and alerting are critical components of managing cloud environments securely, as discussed in the CompTIA Cloud+ certification.

Question # 4
A software engineer needs to transfer data over the internet using programmatic access while also being able to query the data. Which of the following will best help the engineer to complete this task?
A. SQL
B. Web sockets
C. RPC
D. GraphQL


D. GraphQL

Explanation:

GraphQL is the best option for transferring data over the internet with programmatic access and querying capabilities. It is a query language for APIs and a runtime for executing those queries with existing data, providing a more efficient, powerful, and flexible alternative to the REST API.

References:

Data transfer and querying methods are part of the technical knowledge associated with cloud computing, as included in CompTIA Cloud+.

Question # 5

A company's engineering department is conducting a month-long test on the scalability of an in-house-developed software that requires a cluster of 100 or more servers. Which of the following models is the best to use?

A. PaaS
B. SaaS
C. DBaaS
D. laaS


D. laaS

For testing the scalability of an in-house-developed software that requires a cluster of 100 or more servers, Infrastructure as a Service (IaaS) is the best model. IaaS provides the necessary computeresources and allows the engineering department to configure the environment as needed for their specific test without the constraints that might be present in PaaS or SaaS offerings. References: CompTIA Cloud+ Study Guide (Exam CV0-004) - Chapter on Cloud Service Models

Question # 6
A company serves customers globally from its website hosted in North America. A cloud engineer recently deployed new instances of the website in the Europe region. Which of the following is the most likely reason?
A. To simplify workflow
B. To enhance security
C. To reduce latency
D. To decrease cost


C. To reduce latency

Explanation:

The most likely reason for deploying new instances of a website in the Europe region, in addition to the ones hosted in North America, is to reduce latency for users located in Europe. By having the website's resources closer to the end-users, the data has a shorter distance to travel, resulting in faster load times and better performance.

References:

CompTIA Cloud+ Study Guide (Exam CV0-004) by Todd Montgomery and Stephen Olson


Question # 7
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?
A. Database core dump
B. Hard-coded credentials
C. Compromised deployment agent
D. Unpatched web servers


B. Hard-coded credentials

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.

References: CompTIA Security+ Guide to Network Security Fundamentals by Mark Ciampa.

Question # 8
A systems administrator needs to configure backups for the company's on-premises VM cluster. The storage used for backups will be constrained on free space until the company can implement cloud backups. Which of the following backup types will save the most space, assuming the frequency of backups is kept the same?

A. Snapshot
B. Ful
C. Differential
D. Incremental


D. Incremental

Explanation:

An incremental backup strategy saves space because it only backs up data that has changed since the last backup. Compared to full and differential backups, incremental backups aresmaller and save more space, which is essential when storage is constrained.

References: CompTIA Cloud+ Guide to Cloud Computing (ISBN: 978-1-64274-282-2)


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CompTIA CV0-004 Exam Dumps

Exam Name: CompTIA Cloud+ (2024)
Certification Name: CompTIA Cloud+

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