[2024年01月08日] 無料Linux Foundation LFCA試験問題と解答
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質問 # 32
A company's IT associate lists the contents of a directory and sees this line:
-rwsr-x--x 2 bob sales 2047 Oct 10 09:44 sales-report
What happens when Alice from the accounting team tries to execute this file?
- A. The script executes and Bob is notified.
- B. The script executes using Bob's account.
- C. The script executes, but Alice cannot see the results.
- D. The script fails to execute; Alice is not on the sales team.
正解：B
質問 # 33
Which of the following best describes serverless computing?
- A. A model of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another
- B. A model where a provider manages the back-end infrastructure management tasks, such as provisioning, scaling, scheduling, and patching
- C. An abstraction layer over computer hardware that allows the hardware elements of a single computer-processors, memory, storage, and more-to be divided into multiple segments
- D. A solution comprised of sensors, software, and other technologies for the purpose of connecting and exchanging data with other devices and systems over the internet
正解：B
質問 # 34
A host seems to be running slowly. What command would help diagnose which processes are using system resources?
- A. lop
- B. df
- C. free
- D. uptime
正解：A
質問 # 35
By default, the Linux operating system uses what access control to manage files/users?
- A. Mandatory Access Control
- B. Full Control
- C. Least Privilege
- D. Discretionary Access Control
正解：D
質問 # 36
Which of the following is considered a best practice for hardening SSHD?
- A. Disabling ssh access for root
- B. Completely disabling ssh access
- C. Renaming root to a random name
- D. Using portknocking to protect ssh access for root
正解：A
質問 # 37
On systemd-based Linux systems, what are runlevels called?
- A. Modes
- B. Units
- C. Targets
- D. Services
正解：C
質問 # 38
The Linux kernel uses a:
- A. hybrid microkernel architecture
- B. dual architecture
B microkernel architecture - C. monolithic architecture
正解：C
質問 # 39
Which of the following best describes open source compliance?
- A. A process by which software components are compiled in a development environment, pushed to staging, and then finally moved to production
- B. A process by which open source software is first initiated by a requirements analysis, followed by design and then implementation, with a final testing step
- C. A process by which users of open source software evaluate each line of their code against an open source dictionary to determine which components have been plagiarized
- D. A process in which various users of open source software observe copyright notices and satisfy license obligations for their open source software components
正解：D
質問 # 40
Which of the following best describes the DevOps methodology of Continuous Delivery?
- A. The focus is on product releases but also includes coding, building, integrating and testing software
- B. The focus is on coding, building, integrating, and testing software.
- C. The focus is on automating releases of projects as soon as possible.
- D. The focus is on configuration management and continuous monitoring.
正解：C
質問 # 41
An IT team is currently implementing a custom software platform to address some key needs of the company. Which of the following is considered a functional requirement?
- A. Identifying the development methodology
- B. Identifying the users of the proposed system
- C. Identifying the purpose of the proposed system
- D. Identifying the technology stack of the proposed system
正解：C
質問 # 42
Which of the following commands can be used to lock a user's account so that they cannot log into a Linux server without removing any files, folders, or data?
- A. usermod
- B. userdel
- C. chmod
- D. lock
正解：A
質問 # 43
Which of the following technologies is supported by the majority of cloud providers in order to support the orchestration of containerized applications?
- A. Terraform
- B. Vagrant
- C. Ansible
- D. Kubernetes
正解：D
質問 # 44
Which of the following deployment environments is accessed by customers/end-users in a live or real-time fashion?
- A. Runtime
- B. Staging
- C. Production
- D. Website
正解：C
質問 # 45
An IT team needs to synchronize large amounts of data between two nodes on the company's local network. This data changes daily and it is not feasible to copy the entire directory tree each time. Which is the best option to securely copy files in the most timely and efficient manner?
- A. netcp
- B. scp
- C. fsync
- D. rsync
正解：D
質問 # 46
Which of the following is a solution to providing Internet access to a private network using only a single public IPv4 address?
- A. Virtual private network
- B. NAT gateway
- C. Local area network
- D. Routing gateway
正解：B
質問 # 47
What is an appropriate cost consideration when implementing serverless functions in the cloud?
- A. Virtual machine configuration and memory allocation
- B. vCPU resources and disk cache
- C. Runtime environment and container configuration
- D. Elapsed lime of function execution and memory used
正解：D
質問 # 48
What command is used to set or change permission attributes of files (such as read, write, execute)?
- A. setattr
- B. chmod
- C. chacl
- D. chown
正解：B
質問 # 49
A server on the network is unreachable. What is the best method to verify connectivity between your computer and the remote server?
- A. netstat
- B. find
- C. lookup
- D. ping
正解：D
質問 # 50
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