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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Scripting, Containers & Automation | 20% | - Automation and scripting
|
| Topic 2: Troubleshooting | 25% | - System and network troubleshooting
|
| Topic 3: Security | 25% | - System security and access control
|
| Topic 4: System Management | 30% | - Linux installation, configuration, and system management
|
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NEW QUESTION # 56
A Linux administrator wants to make the enable_auth variable set to 1 and available to the environment of subsequently executed commands. Which of the following should the administrator use for this task?
Answer: C
NEW QUESTION # 57
After receiving a monitoring call, an administrator checks the Linux server for processes that have completed execution but have not been removed yet from the process table.
Which of the following represents the process state for which the administrator should search?
Answer: B
Explanation:
This process state represents zombie processes, which have finished execution but still remain in the process table because their parent process has not yet read their exit status.
NEW QUESTION # 58
Which of the following statements best describes Ansible?
Answer: A
Explanation:
Ansible is an automation and configuration management tool that uses human-readable YAML playbooks to define tasks, enabling consistent and agentless automation across systems.
NEW QUESTION # 59
Which of the following commands should an administrator use to convert a KVM disk file to a different format?
Answer: D
Explanation:
The qemu-img command is used to create, convert, and manage disk image files for KVM/QEMU. It allows conversion between formats such as qcow2, raw, and vmdk.
NEW QUESTION # 60
A Linux administrator receives reports that an application hosted in a system is not completing tasks in the allocated time. The administrator connects to the system and obtains the following details:
Which of the following actions can the administrator take to help speed up the jobs?
Answer: B
Explanation:
This scenario represents a classic CPU-bound performance issue, which is covered under the Troubleshooting domain of CompTIA Linux+ V8. The most important indicator is the load average compared to the number of available CPU cores.
The system has 4 CPU cores, as shown by nproc, but the load averages are consistently above 5, with a peak of 7.75. Load average reflects the number of processes either actively running on the CPU or waiting for CPU time. When the load average exceeds the number of CPU cores for extended periods, it indicates CPU contention. Processes must wait longer to be scheduled, resulting in delayed task completion.
The memory statistics confirm that memory is not the bottleneck. free -h shows over 3.5 GiB of available memory, and swap usage is minimal. Additionally, vmstat shows no significant swap-in or swap-out activity and low I/O wait, ruling out memory pressure and disk bottlenecks.
Increasing swap space would not help because the system is not memory constrained. Adding more disks would not address CPU scheduling delays. Increasing free memory is unnecessary because sufficient memory is already available.
Linux+ V8 documentation emphasizes correlating load average with CPU core count to diagnose CPU saturation. The most effective way to speed up job execution in this case is to increase CPU resources, such as adding more vCPUs, moving the workload to a more powerful system, or distributing the workload across multiple systems.
Therefore, the correct answer is B. Increase the amount of CPU resources available to the system.
NEW QUESTION # 61
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