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Exam Code: 010-160

Exam Name Linux Essentials Certificate Exam, version 1.6

Certification Provider: LPI

Corresponding Certification: Linux Essentials

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Linux Essentials Certificate Exam, version 1.6 (010-160) Practice Tests

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LPI 010-160 Practice Test 45

Question 440

A developer wants to inspect kernel device and driver attributes through a virtual filesystem. One student proposes Browse the /sys hierarchy and another proposes Run ps -ef. Which technical comparison is the soundest?

  1. Browse the /sys hierarchy is used because sysfs exposes kernel devices and related attributes as virtual files. The alternative Run ps -ef addresses process snapshot instead.
  2. Run ps -ef is more directly suited to sysfs device information than Browse the /sys hierarchy, regardless of the stated constraint.
  3. The two actions are interchangeable for sysfs device information and necessarily have the same main result.
  4. Run top is the only useful action for sysfs device information; Browse the /sys hierarchy has no relevant effect.

Explanation

Correct Answer

A:

Correct distinction: Browse the /sys hierarchy targets sysfs device information; sysfs exposes kernel devices and related attributes as virtual files. The compared alternative instead serves process snapshot.

Incorrect Answers

B:

Incorrect mapping: Run ps -ef is used for process snapshot. It does not displace Browse the /sys hierarchy for the described requirement.

C:

The mechanisms are different: sysfs exposes kernel devices and related attributes as virtual files. By contrast, ps displays a snapshot of processes visible to the user and allowed permissions. They are not universally interchangeable.

D:

The third option addresses live process monitoring: top interactively refreshes process and resource utilization statistics. The original action remains relevant because sysfs exposes kernel devices and related attributes as virtual files.

Question 441

A technician is locating special files representing devices such as block disks or terminal devices. Which action most directly addresses this requirement on a Linux-related system?

  1. Run ps -ef
  2. Run top
  3. Inspect entries under /dev/
  4. Run free -h

Explanation

Correct Answer

C:

Correct for device nodes: The /dev directory contains device nodes used to access hardware and pseudo-devices.

Incorrect Answers

A:

This action targets process snapshot: ps displays a snapshot of processes visible to the user and allowed permissions. The stated task instead calls for device nodes.

B:

This action targets live process monitoring: top interactively refreshes process and resource utilization statistics. The stated task instead calls for device nodes.

D:

This action targets memory availability overview: free summarizes physical and swap memory metrics in human-readable units. The stated task instead calls for device nodes.

Question 442

An operator follows this instruction: Inspect entries under /dev/. For the task described as "device nodes", what is the most accurate expected result?

  1. ps displays a snapshot of processes visible to the user and allowed permissions.
  2. top interactively refreshes process and resource utilization statistics.
  3. free summarizes physical and swap memory metrics in human-readable units.
  4. The /dev directory contains device nodes used to access hardware and pseudo-devices.

Explanation

Correct Answer

D:

Correct consequence of Inspect entries under /dev/. This outcome explains its use for device nodes.

Incorrect Answers

A:

This outcome belongs to process snapshot and would follow Run ps -ef; it is not the principal result of Inspect entries under /dev/.

B:

This outcome belongs to live process monitoring and would follow Run top; it is not the principal result of Inspect entries under /dev/.

C:

This outcome belongs to memory availability overview and would follow Run free -h; it is not the principal result of Inspect entries under /dev/.

Question 443

A technician is locating special files representing devices such as block disks or terminal devices. A teammate tries this different approach instead: Run ps -ef. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Inspect entries under /dev/
  2. Run ps -ef
  3. Run top
  4. Run free -h

Explanation

Correct Answer

A:

Replace the attempt with this step: The /dev directory contains device nodes used to access hardware and pseudo-devices. It fits device nodes.

Incorrect Answers

B:

This step is specific to process snapshot: ps displays a snapshot of processes visible to the user and allowed permissions. It does not fix the stated requirement for device nodes.

C:

This step is specific to live process monitoring: top interactively refreshes process and resource utilization statistics. It does not fix the stated requirement for device nodes.

D:

This step is specific to memory availability overview: free summarizes physical and swap memory metrics in human-readable units. It does not fix the stated requirement for device nodes.

Question 444

A technician is locating special files representing devices such as block disks or terminal devices. One student proposes Inspect entries under /dev/ and another proposes Run top. Which technical comparison is the soundest?

  1. Run top is more directly suited to device nodes than Inspect entries under /dev/, regardless of the stated constraint.
  2. Inspect entries under /dev/ is used because The /dev directory contains device nodes used to access hardware and pseudo-devices. The alternative Run top addresses live process monitoring instead.
  3. The two actions are interchangeable for device nodes and necessarily have the same main result.
  4. Run free -h is the only useful action for device nodes; Inspect entries under /dev/ has no relevant effect.

Explanation

Correct Answer

B:

Correct distinction: Inspect entries under /dev/ targets device nodes; The /dev directory contains device nodes used to access hardware and pseudo-devices. The compared alternative instead serves live process monitoring.

Incorrect Answers

A:

Incorrect mapping: Run top is used for live process monitoring. It does not displace Inspect entries under /dev/ for the described requirement.

C:

The mechanisms are different: The /dev directory contains device nodes used to access hardware and pseudo-devices. By contrast, top interactively refreshes process and resource utilization statistics. They are not universally interchangeable.

D:

The third option addresses memory availability overview: free summarizes physical and swap memory metrics in human-readable units. The original action remains relevant because The /dev directory contains device nodes used to access hardware and pseudo-devices.

Question 445

An operator wants a point-in-time listing of processes with their process IDs. Which action most directly addresses this requirement on a Linux-related system?

  1. Run top
  2. Run free -h
  3. Inspect dmesg output where permitted
  4. Run ps -ef

Explanation

Correct Answer

D:

Correct for process snapshot: ps displays a snapshot of processes visible to the user and allowed permissions.

Incorrect Answers

A:

This action targets live process monitoring: top interactively refreshes process and resource utilization statistics. The stated task instead calls for process snapshot.

B:

This action targets memory availability overview: free summarizes physical and swap memory metrics in human-readable units. The stated task instead calls for process snapshot.

C:

This action targets kernel ring-buffer messages: dmesg reads the kernel message buffer, subject to system access restrictions. The stated task instead calls for process snapshot.

Question 446

An operator follows this instruction: Run ps -ef. For the task described as "process snapshot", what is the most accurate expected result?

  1. ps displays a snapshot of processes visible to the user and allowed permissions.
  2. top interactively refreshes process and resource utilization statistics.
  3. free summarizes physical and swap memory metrics in human-readable units.
  4. dmesg reads the kernel message buffer, subject to system access restrictions.

Explanation

Correct Answer

A:

Correct consequence of Run ps -ef. This outcome explains its use for process snapshot.

Incorrect Answers

B:

This outcome belongs to live process monitoring and would follow Run top; it is not the principal result of Run ps -ef.

C:

This outcome belongs to memory availability overview and would follow Run free -h; it is not the principal result of Run ps -ef.

D:

This outcome belongs to kernel ring-buffer messages and would follow Inspect dmesg output where permitted; it is not the principal result of Run ps -ef.

Question 447

An operator wants a point-in-time listing of processes with their process IDs. A teammate tries this different approach instead: Run top. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Run top
  2. Run ps -ef
  3. Run free -h
  4. Inspect dmesg output where permitted

Explanation

Correct Answer

B:

Replace the attempt with this step: ps displays a snapshot of processes visible to the user and allowed permissions. It fits process snapshot.

Incorrect Answers

A:

This step is specific to live process monitoring: top interactively refreshes process and resource utilization statistics. It does not fix the stated requirement for process snapshot.

C:

This step is specific to memory availability overview: free summarizes physical and swap memory metrics in human-readable units. It does not fix the stated requirement for process snapshot.

D:

This step is specific to kernel ring-buffer messages: dmesg reads the kernel message buffer, subject to system access restrictions. It does not fix the stated requirement for process snapshot.

Question 448

An operator wants a point-in-time listing of processes with their process IDs. One student proposes Run ps -ef and another proposes Run free -h. Which technical comparison is the soundest?

  1. Run free -h is more directly suited to process snapshot than Run ps -ef, regardless of the stated constraint.
  2. The two actions are interchangeable for process snapshot and necessarily have the same main result.
  3. Run ps -ef is used because ps displays a snapshot of processes visible to the user and allowed permissions. The alternative Run free -h addresses memory availability overview instead.
  4. Inspect dmesg output where permitted is the only useful action for process snapshot; Run ps -ef has no relevant effect.

Explanation

Correct Answer

C:

Correct distinction: Run ps -ef targets process snapshot; ps displays a snapshot of processes visible to the user and allowed permissions. The compared alternative instead serves memory availability overview.

Incorrect Answers

A:

Incorrect mapping: Run free -h is used for memory availability overview. It does not displace Run ps -ef for the described requirement.

B:

The mechanisms are different: ps displays a snapshot of processes visible to the user and allowed permissions. By contrast, free summarizes physical and swap memory metrics in human-readable units. They are not universally interchangeable.

D:

The third option addresses kernel ring-buffer messages: dmesg reads the kernel message buffer, subject to system access restrictions. The original action remains relevant because ps displays a snapshot of processes visible to the user and allowed permissions.

Question 449

A technician needs a repeatedly updated view of CPU usage by active processes. Which action most directly addresses this requirement on a Linux-related system?

  1. Run top
  2. Run free -h
  3. Inspect dmesg output where permitted
  4. Run du -sh project/

Explanation

Correct Answer

A:

Correct for live process monitoring: top interactively refreshes process and resource utilization statistics.

Incorrect Answers

B:

This action targets memory availability overview: free summarizes physical and swap memory metrics in human-readable units. The stated task instead calls for live process monitoring.

C:

This action targets kernel ring-buffer messages: dmesg reads the kernel message buffer, subject to system access restrictions. The stated task instead calls for live process monitoring.

D:

This action targets directory disk-usage summary: du reports disk usage for directory contents and -s summarizes one total. The stated task instead calls for live process monitoring.

Question 450

An operator follows this instruction: Run top. For the task described as "live process monitoring", what is the most accurate expected result?

  1. free summarizes physical and swap memory metrics in human-readable units.
  2. top interactively refreshes process and resource utilization statistics.
  3. dmesg reads the kernel message buffer, subject to system access restrictions.
  4. du reports disk usage for directory contents and -s summarizes one total.

Explanation

Correct Answer

B:

Correct consequence of Run top. This outcome explains its use for live process monitoring.

Incorrect Answers

A:

This outcome belongs to memory availability overview and would follow Run free -h; it is not the principal result of Run top.

C:

This outcome belongs to kernel ring-buffer messages and would follow Inspect dmesg output where permitted; it is not the principal result of Run top.

D:

This outcome belongs to directory disk-usage summary and would follow Run du -sh project/; it is not the principal result of Run top.