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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 36

Question 350

An operator follows this instruction: Set machine=$(hostname). For the task described as "capture command output", what is the most accurate expected result?

  1. Command substitution runs the command and substitutes its standard output.
  2. Exit status zero represents success to shell callers.
  3. A nonzero exit status signals an error to callers and automation.
  4. Arithmetic expansion evaluates the integer expression before assignment.

Explanation

Correct Answer

A:

Correct consequence of Set machine=$(hostname). This outcome explains its use for capture command output.

Incorrect Answers

B:

This outcome belongs to report successful exit status and would follow Use exit 0; it is not the principal result of Set machine=$(hostname).

C:

This outcome belongs to report failure exit status and would follow Use exit 1 after the validation error; it is not the principal result of Set machine=$(hostname).

D:

This outcome belongs to integer arithmetic expansion and would follow Use next=$((n + 1)); it is not the principal result of Set machine=$(hostname).

Question 351

A script needs to assign the printed output of hostname to a variable. A teammate tries this different approach instead: Use exit 0. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Use exit 0
  2. Set machine=$(hostname)
  3. Use exit 1 after the validation error
  4. Use next=$((n + 1))

Explanation

Correct Answer

B:

Replace the attempt with this step: Command substitution runs the command and substitutes its standard output. It fits capture command output.

Incorrect Answers

A:

This step is specific to report successful exit status: Exit status zero represents success to shell callers. It does not fix the stated requirement for capture command output.

C:

This step is specific to report failure exit status: A nonzero exit status signals an error to callers and automation. It does not fix the stated requirement for capture command output.

D:

This step is specific to integer arithmetic expansion: Arithmetic expansion evaluates the integer expression before assignment. It does not fix the stated requirement for capture command output.

Question 352

A script needs to assign the printed output of hostname to a variable. One student proposes Set machine=$(hostname) and another proposes Use exit 1 after the validation error. Which technical comparison is the soundest?

  1. Use exit 1 after the validation error is more directly suited to capture command output than Set machine=$(hostname), regardless of the stated constraint.
  2. The two actions are interchangeable for capture command output and necessarily have the same main result.
  3. Set machine=$(hostname) is used because Command substitution runs the command and substitutes its standard output. The alternative Use exit 1 after the validation error addresses report failure exit status instead.
  4. Use next=$((n + 1)) is the only useful action for capture command output; Set machine=$(hostname) has no relevant effect.

Explanation

Correct Answer

C:

Correct distinction: Set machine=$(hostname) targets capture command output; Command substitution runs the command and substitutes its standard output. The compared alternative instead serves report failure exit status.

Incorrect Answers

A:

Incorrect mapping: Use exit 1 after the validation error is used for report failure exit status. It does not displace Set machine=$(hostname) for the described requirement.

B:

The mechanisms are different: Command substitution runs the command and substitutes its standard output. By contrast, A nonzero exit status signals an error to callers and automation. They are not universally interchangeable.

D:

The third option addresses integer arithmetic expansion: Arithmetic expansion evaluates the integer expression before assignment. The original action remains relevant because Command substitution runs the command and substitutes its standard output.

Question 353

A shell script must explicitly tell its caller that all requested operations completed successfully. Which action most directly addresses this requirement on a Linux-related system?

  1. Use exit 0
  2. Use exit 1 after the validation error
  3. Use next=$((n + 1))
  4. Open the file with nano script.sh

Explanation

Correct Answer

A:

Correct for report successful exit status: Exit status zero represents success to shell callers.

Incorrect Answers

B:

This action targets report failure exit status: A nonzero exit status signals an error to callers and automation. The stated task instead calls for report successful exit status.

C:

This action targets integer arithmetic expansion: Arithmetic expansion evaluates the integer expression before assignment. The stated task instead calls for report successful exit status.

D:

This action targets basic text editing in nano: nano provides a terminal-based text editor with visible command hints. The stated task instead calls for report successful exit status.

Question 354

An operator follows this instruction: Use exit 0. For the task described as "report successful exit status", what is the most accurate expected result?

  1. A nonzero exit status signals an error to callers and automation.
  2. Exit status zero represents success to shell callers.
  3. Arithmetic expansion evaluates the integer expression before assignment.
  4. nano provides a terminal-based text editor with visible command hints.

Explanation

Correct Answer

B:

Correct consequence of Use exit 0. This outcome explains its use for report successful exit status.

Incorrect Answers

A:

This outcome belongs to report failure exit status and would follow Use exit 1 after the validation error; it is not the principal result of Use exit 0.

C:

This outcome belongs to integer arithmetic expansion and would follow Use next=$((n + 1)); it is not the principal result of Use exit 0.

D:

This outcome belongs to basic text editing in nano and would follow Open the file with nano script.sh; it is not the principal result of Use exit 0.

Question 355

A shell script must explicitly tell its caller that all requested operations completed successfully. A teammate tries this different approach instead: Use exit 1 after the validation error. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Use exit 1 after the validation error
  2. Use next=$((n + 1))
  3. Use exit 0
  4. Open the file with nano script.sh

Explanation

Correct Answer

C:

Replace the attempt with this step: Exit status zero represents success to shell callers. It fits report successful exit status.

Incorrect Answers

A:

This step is specific to report failure exit status: A nonzero exit status signals an error to callers and automation. It does not fix the stated requirement for report successful exit status.

B:

This step is specific to integer arithmetic expansion: Arithmetic expansion evaluates the integer expression before assignment. It does not fix the stated requirement for report successful exit status.

D:

This step is specific to basic text editing in nano: nano provides a terminal-based text editor with visible command hints. It does not fix the stated requirement for report successful exit status.

Question 356

A shell script must explicitly tell its caller that all requested operations completed successfully. One student proposes Use exit 0 and another proposes Use next=$((n + 1)). Which technical comparison is the soundest?

  1. Use next=$((n + 1)) is more directly suited to report successful exit status than Use exit 0, regardless of the stated constraint.
  2. The two actions are interchangeable for report successful exit status and necessarily have the same main result.
  3. Open the file with nano script.sh is the only useful action for report successful exit status; Use exit 0 has no relevant effect.
  4. Use exit 0 is used because Exit status zero represents success to shell callers. The alternative Use next=$((n + 1)) addresses integer arithmetic expansion instead.

Explanation

Correct Answer

D:

Correct distinction: Use exit 0 targets report successful exit status; Exit status zero represents success to shell callers. The compared alternative instead serves integer arithmetic expansion.

Incorrect Answers

A:

Incorrect mapping: Use next=$((n + 1)) is used for integer arithmetic expansion. It does not displace Use exit 0 for the described requirement.

B:

The mechanisms are different: Exit status zero represents success to shell callers. By contrast, Arithmetic expansion evaluates the integer expression before assignment. They are not universally interchangeable.

C:

The third option addresses basic text editing in nano: nano provides a terminal-based text editor with visible command hints. The original action remains relevant because Exit status zero represents success to shell callers.

Question 357

A shell script detects invalid input and must return a failure status to the caller. Which action most directly addresses this requirement on a Linux-related system?

  1. Use next=$((n + 1))
  2. Use exit 1 after the validation error
  3. Open the file with nano script.sh
  4. Press i in vi normal mode to enter insert mode

Explanation

Correct Answer

B:

Correct for report failure exit status: A nonzero exit status signals an error to callers and automation.

Incorrect Answers

A:

This action targets integer arithmetic expansion: Arithmetic expansion evaluates the integer expression before assignment. The stated task instead calls for report failure exit status.

C:

This action targets basic text editing in nano: nano provides a terminal-based text editor with visible command hints. The stated task instead calls for report failure exit status.

D:

This action targets modal editing in vi: vi is modal; i enters insert mode so text can be typed. The stated task instead calls for report failure exit status.

Question 358

An operator follows this instruction: Use exit 1 after the validation error. For the task described as "report failure exit status", what is the most accurate expected result?

  1. Arithmetic expansion evaluates the integer expression before assignment.
  2. nano provides a terminal-based text editor with visible command hints.
  3. A nonzero exit status signals an error to callers and automation.
  4. vi is modal; i enters insert mode so text can be typed.

Explanation

Correct Answer

C:

Correct consequence of Use exit 1 after the validation error. This outcome explains its use for report failure exit status.

Incorrect Answers

A:

This outcome belongs to integer arithmetic expansion and would follow Use next=$((n + 1)); it is not the principal result of Use exit 1 after the validation error.

B:

This outcome belongs to basic text editing in nano and would follow Open the file with nano script.sh; it is not the principal result of Use exit 1 after the validation error.

D:

This outcome belongs to modal editing in vi and would follow Press i in vi normal mode to enter insert mode; it is not the principal result of Use exit 1 after the validation error.

Question 359

A shell script detects invalid input and must return a failure status to the caller. A teammate tries this different approach instead: Use next=$((n + 1)). The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Use next=$((n + 1))
  2. Open the file with nano script.sh
  3. Press i in vi normal mode to enter insert mode
  4. Use exit 1 after the validation error

Explanation

Correct Answer

D:

Replace the attempt with this step: A nonzero exit status signals an error to callers and automation. It fits report failure exit status.

Incorrect Answers

A:

This step is specific to integer arithmetic expansion: Arithmetic expansion evaluates the integer expression before assignment. It does not fix the stated requirement for report failure exit status.

B:

This step is specific to basic text editing in nano: nano provides a terminal-based text editor with visible command hints. It does not fix the stated requirement for report failure exit status.

C:

This step is specific to modal editing in vi: vi is modal; i enters insert mode so text can be typed. It does not fix the stated requirement for report failure exit status.

Question 360

A shell script detects invalid input and must return a failure status to the caller. One student proposes Use exit 1 after the validation error and another proposes Open the file with nano script.sh. Which technical comparison is the soundest?

  1. Use exit 1 after the validation error is used because A nonzero exit status signals an error to callers and automation. The alternative Open the file with nano script.sh addresses basic text editing in nano instead.
  2. Open the file with nano script.sh is more directly suited to report failure exit status than Use exit 1 after the validation error, regardless of the stated constraint.
  3. The two actions are interchangeable for report failure exit status and necessarily have the same main result.
  4. Press i in vi normal mode to enter insert mode is the only useful action for report failure exit status; Use exit 1 after the validation error has no relevant effect.

Explanation

Correct Answer

A:

Correct distinction: Use exit 1 after the validation error targets report failure exit status; A nonzero exit status signals an error to callers and automation. The compared alternative instead serves basic text editing in nano.

Incorrect Answers

B:

Incorrect mapping: Open the file with nano script.sh is used for basic text editing in nano. It does not displace Use exit 1 after the validation error for the described requirement.

C:

The mechanisms are different: A nonzero exit status signals an error to callers and automation. By contrast, nano provides a terminal-based text editor with visible command hints. They are not universally interchangeable.

D:

The third option addresses modal editing in vi: vi is modal; i enters insert mode so text can be typed. The original action remains relevant because A nonzero exit status signals an error to callers and automation.