[2025年03月22日] CV0-004 PDF問題とテストエンジンには230問があります
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質問 # 130
Which of the following is used to deliver code quickly and efficiently across the development, test, and production environments?
- A. Container image
- B. VM template
- C. Serverless function
- D. Snapshot
正解：A
解説：
A container image is used to deliver code quickly and efficiently across the development, test, and production environments. Container images are lightweight, standalone, executable software packages that include everything needed to run a piece of software, including the code, runtime, system tools, libraries, and settings.
質問 # 131
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?
- A. Token-based access
- B. SSH
- C. Web portal
- D. Bastion host
正解：D
解説：
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.
Reference: 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.
質問 # 132
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?
- A. VPC
- B. ACL
- C. SSH
- D. WAF
正解：A
解説：
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.
質問 # 133
A company is developing a new web application that requires a relational database management system with minimal operational overhead. Which of the following should the company choose?
- A. A hybrid database setup
- B. A database migration service
- C. A managed SQL database on the cloud
- D. A database installed on a virtual machine
正解：C
解説：
For a new web application that requires a relational database management system with minimal operational overhead, the company should choose a managed SQL database on the cloud. Managed databases provide automated backups, patching, and other management tasks, reducing the administrative burden.
Reference: The use of managed services, like managed databases, to minimize operational overhead is a strategic decision in cloud computing covered in CompTIA Cloud+.
質問 # 134
An e-commerce store is preparing for an annual holiday sale. Previously, this sale has increased the number of transactions between two and ten times the normal level of transactions. A cloud administrator wants to implement a process to scale the web server seamlessly. The goal is to automate changes only when necessary and with minimal cost.
Which of the following scaling approaches should the administrator use?
- A. Allow the load to trigger adjustments to the resources.
- B. When traffic increases, adjust the resources using the cloud portal.
- C. Scale horizontally with additional web servers to provide redundancy.
- D. Schedule the environment to scale resources before the sale begins.
正解：A
解説：
To seamlessly scale the web server for an e-commerce store during an annual sale, it's best to allow the load to trigger adjustments to the resources. This approach uses autoscaling to automatically adjust the number of active servers based on the current load, ensuring an automated change that is cost-effective. Reference: CompTIA Cloud+ Study Guide (Exam CV0-004) - Chapter on Cloud Scalability
質問 # 135
A cloud engineer is troubleshooting a connectivity issue. The application server with IP 192.168.1.10 in one subnet is not connecting to the MySQL database server with IP 192.168.2 20 in a different subnet. The cloud engineer reviews the following information:
Application Server Stateful Firewall
Which of the following should the cloud engineer address lo fix the communication issue?
- A. The MySQL Server Subnet Routing Table
- B. The Application Server Subnet Routing Table
- C. The MySQL Server Stateful Firewall
- D. The Application Server Stateful Firewall
正解：C
解説：
The connectivity issue between the application server and the MySQL database server in different subnets is likely due to the MySQL Server Stateful Firewall's inbound rules. The application server has an IP of
192.168.1.10, but the MySQL server's inbound rules only permit IP 192.168.1.10/32 on port 3306. This rule allows only a single IP address (192.168.1.10) to communicate on port 3306, which is typical for MySQL.
However, if the application server's IP is not 192.168.1.10 or the application is trying to communicate on a different port, it would be blocked. To fix the communication issue, the cloud engineer should address the inbound rules on the MySQL Server Stateful Firewall to ensure that the application server's IP address and the required port are allowed. References: Based on the information provided in the question and general networking principles.
質問 # 136
A company uses containers to implement a web application. The development team completed internal testing of a new feature and is ready to move the feature to the production environment.
Which of the following deployment models would best meet the company's needs while minimizing cost and targeting a specific subset of its users?
- A. Rolling
- B. Canary
- C. In-place
- D. Blue-green
正解：B
解説：
The canary deployment model is an approach where a new feature or service is rolled out to a small subset of users before being deployed widely. This method allows the company to test the impact of the new feature in the production environment with a limited scope, minimizing risk and potential cost implications if issues arise. This approach contrasts with blue-green deployments, which involve switching between two identical environments; rolling deployments, which gradually update all instances; and in-place deployments, which update the current environment. The canary model is particularly suited for targeting specific user groups and gathering feedback before a full rollout.
質問 # 137
A cloud architect is deploying a web application that contains many large images and will be accessed on two containers. Which of the following will MOST improve the user experience while keeping costs low?
- A. Implement web servers on both continents and peer the VPCs.
- B. Implement a replica of the entire solution on every continent.
- C. Implement web servers in both continents and set up a VPN between the VPCs.
- D. Implement a CDN and offload the images to an object storage.
正解：D
解説：
A CDN (content delivery network) is a network of servers that are distributed around the world.
When a user requests a web page, the CDN will deliver the page from the server that is closest to the user. This can significantly improve the user experience by reducing the amount of time it takes to load the page.
Object storage is a type of storage that is designed to store large amounts of data. It is typically used for storing images, videos, and other media files. Offloading the images to object storage will free up space on the web servers, which can improve performance and reduce costs.
質問 # 138
A security engineer Identifies a vulnerability m a containerized application. The vulnerability can be exploited by a privileged process to read tie content of the host's memory. The security engineer reviews the following Dockerfile to determine a solution to mitigate similar exploits:
Which of the following is the best solution to prevent similar exploits by privileged processes?
- A. Changing FROM alpiner3.17 to FROM alpine:latest
- B. Running the container with the ready-only filesystem configuration
- C. Patching the host running the Docker daemon
- D. Adding the USER myappuserinstruction
正解：D
解説：
Adding the "USER myappuser" instruction to the Dockerfile is the best solution to prevent similar exploits by privileged processes. This instruction ensures that the container runs as a non-privileged user instead of the root user, significantly reducing the risk of privileged exploits. Running containers with least privilege principles minimizes the potential impact of vulnerabilities, enhancing the overall security posture of the containerized environment.
Reference: The CompTIA Cloud+ framework includes security concerns, measures, and concepts for cloud operations, highlighting the importance of container security practices, such as running containers as non-root users to prevent unauthorized access and exploitation.
質問 # 139
A company has ten cloud engineers working on different manual cloud deployments. In the past, engineers have had difficulty keeping deployments consistent. Which of the following is the best method to address this issue?
- A. Configuration as code
- B. Deployment documentation
- C. Change ticketing
- D. Service logging
正解：A
解説：
Comprehensive and Detailed Step-by-Step
A . Deployment documentation: Helpful but does not enforce consistency or automation.
B . Service logging: Useful for monitoring but unrelated to deployment consistency.
C . Configuration as code: Automates and standardizes deployments, ensuring consistency regardless of the engineer performing the task.
D . Change ticketing: Tracks changes but doesn't enforce consistency or standardization.
Reference:
CompTIA Cloud+ CV0-004 Study Guide, Objective 2.4: Automate infrastructure deployments using Infrastructure as Code (IaC).
質問 # 140
A company wants to combine solutions in a central and scalable environment to achieve the following goals:
* Control
* Visibility
* Automation
* Cost efficiency
Which of the following best describes what the company should implement?
- A. Workload orchestration
- B. Application modernization
- C. Containerization
- D. Batch processing
正解：A
解説：
Workload orchestration is the best description of what the company should implement to achieve control, visibility, automation, and cost efficiency. It involves using orchestration tools to manage workloads in cloud environments, ensuring resources are used efficiently and operations are automated.
Reference: Workload orchestration is a part of cloud management strategies discussed under the Management and Technical Operations domain in the CompTIA Cloud+ objectives.
質問 # 141
An administrator is securing a private cloud environment and wants to ensure only approved systems can connect to switches. Which of the following would be MOST useful to accomplish this task?
- A. NIPS
- B. WAF
- C. VLAN
- D. NAC
正解：D
解説：
NAC is a security solution that helps to enforce network security policies by controlling access to network resources. It ensures that only authorized devices can access the network by validating their identity and checking their compliance with security policies.
質問 # 142
A cloud networking engineer is troubleshooting the corporate office's network configuration. Employees in the IT and operations departments are unable to resolve IP addresses on all devices, and the IT department cannot establish a connection to other departments' subnets. The engineer identifies the following configuration currently in place to support the office network:
Each employee needs to connect to the network with a maximum of three hosts. Each subnet must be segregated, but the IT department must have the ability to communicate with all subnets. Which of the following meet the IP addressing and routing requirements? (Select two).
- A. Configuring static routing to allow access from 10.1.30.1 to each subnet
- B. Configuring static routing to allow access from each subnet to 10.1.40.1
- C. Modifying the subnet mask to 255 255 254.0 for IT and operations departments
- D. Combining the subnets and increasing the allocation of IP addresses available to support three hosts for each employee
- E. Modifying the subnet mask to 255.255.255.128 for the IT and operations departments
- F. Modifying the BYOD policy to reduce the volume of devices that are allowed to connect to the corporate network
正解：A、E
解説：
To meet the requirements of allowing the IT department to communicate with all subnets while keeping each department segregated and ensuring a maximum of three hosts per employee, two actions are required. First, configuring static routing from the IT subnet (10.1.30.1) to each of the other subnets would establish the necessary connectivity. Second, modifying the subnet mask to 255.255.255.128 for the IT and operations departments would provide the needed number of host addresses while maintaining subnet segregation.
Reference: This solution is based on networking and subnetting principles, which are part of the foundational knowledge for cloud networking within the CompTIA Cloud+ framework.
質問 # 143
Which of the following is true of SSDs?
- A. SSDs have small storage capacities.
- B. SSDs can be used for high-IOP applications.
- C. SSDs are used mostly in cold storage.
- D. SSDs do not have self-encrypting capabilities.
正解：B
解説：
SSDs (Solid State Drives) are known for their high performance and can handle a high number of input/output operations per second (IOPS). This makes them ideal for applications and workloads that require rapid access to storage, such as databases and high-performance computing applications.
質問 # 144
A list of CVEs was identified on a web server. The systems administrator decides to close the ports and disable weak TLS ciphers. Which of the following describes this vulnerability management stage?
- A. Remediation
- B. Assessment
- C. Scanning
- D. Identification
正解：A
解説：
Closing the ports and disabling weak TLS ciphers as a response to a list of identified CVEs (Common Vulnerabilities and Exposures) describes the vulnerability management stage of
'remediation'. This stage involves taking actions to resolve vulnerabilities and mitigate potential risks.
質問 # 145
An organization's critical data was exfiltrated from a computer system in a cyberattack. A cloud analyst wants to identify the root cause and is reviewing the following security logs of a software web application:
"2021/12/18 09:33:12" "10.34.32.18" "104.224.123.119" "POST
/login.php?u=administrator&p=or%201%20=1"
"2021/12/18 09:33:13" "10.34.32.18" "104.224.123.119" "POST
/login.php?u=administrator&p=%27%0A"
"2021/12/18 09:33:14" "10.34.32.18" "104.224.123.119" "POST
/login.php?u=administrator&p=%26"
"2021/12/18 09:33:17" "10.34.32.18" "104.224.123.119" "POST /
login.php?u=administrator&p=%3B"
"2021/12/18 09:33:12" "10.34.32.18" "104.224.123.119" "POST
/login.php?u=admin&p=or%201%20=1"
"2021/12/18 09:33:19" "10.34.32.18" "104.224.123.119" "POST
/login.php?u=admin&p=%27%0A"
"2021/12/18 09:33:21" "10.34.32.18" "104.224.123.119" "POST /login.php?u=admin&p=%26"
"2021/12/18 09:33:23" "10.34.32.18" "104.224.123.119" "POST /login.php?u=admin&p=%3B" Which of the following types of attacks occurred?
- A. Privilege escalation
- B. SQL injection
- C. Cross-site scripting
- D. Reuse of leaked credentials
正解：B
解説：
The security logs of the software web application show patterns that are typical of an SQL injection attack. This is evidenced by the inclusion of SQL syntax in the user input fields in an attempt to manipulate the database.
質問 # 146
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