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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 28

Question 270

An operator follows this instruction: Run unzip project.zip. For the task described as "extract zip archive", what is the most accurate expected result?

  1. unzip extracts files from the ZIP archive format.
  2. The c flag creates an archive and f supplies the archive filename.
  3. The t flag lists the entries stored in the tar archive.
  4. The x flag extracts archive members and f names the input archive.

Explanation

Correct Answer

A:

Correct consequence of Run unzip project.zip. This outcome explains its use for extract zip archive.

Incorrect Answers

B:

This outcome belongs to create uncompressed tar archive and would follow Run tar -cf documents.tar documents/; it is not the principal result of Run unzip project.zip.

C:

This outcome belongs to list tar archive members and would follow Run tar -tf documents.tar; it is not the principal result of Run unzip project.zip.

D:

This outcome belongs to extract tar archive and would follow Run tar -xf documents.tar; it is not the principal result of Run unzip project.zip.

Question 271

A project receives a ZIP file and needs to restore its members to the current directory. A teammate tries this different approach instead: Run tar -cf documents.tar documents/. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Run tar -cf documents.tar documents/
  2. Run unzip project.zip
  3. Run tar -tf documents.tar
  4. Run tar -xf documents.tar

Explanation

Correct Answer

B:

Replace the attempt with this step: unzip extracts files from the ZIP archive format. It fits extract zip archive.

Incorrect Answers

A:

This step is specific to create uncompressed tar archive: The c flag creates an archive and f supplies the archive filename. It does not fix the stated requirement for extract zip archive.

C:

This step is specific to list tar archive members: The t flag lists the entries stored in the tar archive. It does not fix the stated requirement for extract zip archive.

D:

This step is specific to extract tar archive: The x flag extracts archive members and f names the input archive. It does not fix the stated requirement for extract zip archive.

Question 272

A project receives a ZIP file and needs to restore its members to the current directory. One student proposes Run unzip project.zip and another proposes Run tar -tf documents.tar. Which technical comparison is the soundest?

  1. Run tar -tf documents.tar is more directly suited to extract zip archive than Run unzip project.zip, regardless of the stated constraint.
  2. The two actions are interchangeable for extract zip archive and necessarily have the same main result.
  3. Run unzip project.zip is used because unzip extracts files from the ZIP archive format. The alternative Run tar -tf documents.tar addresses list tar archive members instead.
  4. Run tar -xf documents.tar is the only useful action for extract zip archive; Run unzip project.zip has no relevant effect.

Explanation

Correct Answer

C:

Correct distinction: Run unzip project.zip targets extract zip archive; unzip extracts files from the ZIP archive format. The compared alternative instead serves list tar archive members.

Incorrect Answers

A:

Incorrect mapping: Run tar -tf documents.tar is used for list tar archive members. It does not displace Run unzip project.zip for the described requirement.

B:

The mechanisms are different: unzip extracts files from the ZIP archive format. By contrast, The t flag lists the entries stored in the tar archive. They are not universally interchangeable.

D:

The third option addresses extract tar archive: The x flag extracts archive members and f names the input archive. The original action remains relevant because unzip extracts files from the ZIP archive format.

Question 273

A support engineer needs lines containing ERROR from service.log. Which action most directly addresses this requirement on a Linux-related system?

  1. Run grep 'ERROR' service.log
  2. Run grep -i 'warning' service.log
  3. Run grep -n 'TODO' app.py
  4. Run status_command through the pipe operator into grep 'active'

Explanation

Correct Answer

A:

Correct for find matching lines with grep: grep selects file lines that match the supplied pattern.

Incorrect Answers

B:

This action targets case insensitive search: The -i flag makes grep ignore letter case when matching. The stated task instead calls for find matching lines with grep.

C:

This action targets line-numbered search results: The -n option prefixes matching lines with their line numbers. The stated task instead calls for find matching lines with grep.

D:

This action targets pipeline matching output: The pipe sends standard output of the first command to grep for filtering. The stated task instead calls for find matching lines with grep.

Question 274

An operator follows this instruction: Run grep 'ERROR' service.log. For the task described as "find matching lines with grep", what is the most accurate expected result?

  1. The -i flag makes grep ignore letter case when matching.
  2. grep selects file lines that match the supplied pattern.
  3. The -n option prefixes matching lines with their line numbers.
  4. The pipe sends standard output of the first command to grep for filtering.

Explanation

Correct Answer

B:

Correct consequence of Run grep 'ERROR' service.log. This outcome explains its use for find matching lines with grep.

Incorrect Answers

A:

This outcome belongs to case insensitive search and would follow Run grep -i 'warning' service.log; it is not the principal result of Run grep 'ERROR' service.log.

C:

This outcome belongs to line-numbered search results and would follow Run grep -n 'TODO' app.py; it is not the principal result of Run grep 'ERROR' service.log.

D:

This outcome belongs to pipeline matching output and would follow Run status_command through the pipe operator into grep 'active'; it is not the principal result of Run grep 'ERROR' service.log.

Question 275

A support engineer needs lines containing ERROR from service.log. A teammate tries this different approach instead: Run grep -i 'warning' service.log. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Run grep -i 'warning' service.log
  2. Run grep -n 'TODO' app.py
  3. Run grep 'ERROR' service.log
  4. Run status_command through the pipe operator into grep 'active'

Explanation

Correct Answer

C:

Replace the attempt with this step: grep selects file lines that match the supplied pattern. It fits find matching lines with grep.

Incorrect Answers

A:

This step is specific to case insensitive search: The -i flag makes grep ignore letter case when matching. It does not fix the stated requirement for find matching lines with grep.

B:

This step is specific to line-numbered search results: The -n option prefixes matching lines with their line numbers. It does not fix the stated requirement for find matching lines with grep.

D:

This step is specific to pipeline matching output: The pipe sends standard output of the first command to grep for filtering. It does not fix the stated requirement for find matching lines with grep.

Question 276

A support engineer needs lines containing ERROR from service.log. One student proposes Run grep 'ERROR' service.log and another proposes Run grep -n 'TODO' app.py. Which technical comparison is the soundest?

  1. Run grep -n 'TODO' app.py is more directly suited to find matching lines with grep than Run grep 'ERROR' service.log, regardless of the stated constraint.
  2. The two actions are interchangeable for find matching lines with grep and necessarily have the same main result.
  3. Run status_command through the pipe operator into grep 'active' is the only useful action for find matching lines with grep; Run grep 'ERROR' service.log has no relevant effect.
  4. Run grep 'ERROR' service.log is used because grep selects file lines that match the supplied pattern. The alternative Run grep -n 'TODO' app.py addresses line-numbered search results instead.

Explanation

Correct Answer

D:

Correct distinction: Run grep 'ERROR' service.log targets find matching lines with grep; grep selects file lines that match the supplied pattern. The compared alternative instead serves line-numbered search results.

Incorrect Answers

A:

Incorrect mapping: Run grep -n 'TODO' app.py is used for line-numbered search results. It does not displace Run grep 'ERROR' service.log for the described requirement.

B:

The mechanisms are different: grep selects file lines that match the supplied pattern. By contrast, The -n option prefixes matching lines with their line numbers. They are not universally interchangeable.

C:

The third option addresses pipeline matching output: The pipe sends standard output of the first command to grep for filtering. The original action remains relevant because grep selects file lines that match the supplied pattern.

Question 277

The log might contain warning, WARNING or Warning and all variants must be found. Which action most directly addresses this requirement on a Linux-related system?

  1. Run grep -n 'TODO' app.py
  2. Run grep -i 'warning' service.log
  3. Run status_command through the pipe operator into grep 'active'
  4. Run report_command > summary.txt

Explanation

Correct Answer

B:

Correct for case insensitive search: The -i flag makes grep ignore letter case when matching.

Incorrect Answers

A:

This action targets line-numbered search results: The -n option prefixes matching lines with their line numbers. The stated task instead calls for case insensitive search.

C:

This action targets pipeline matching output: The pipe sends standard output of the first command to grep for filtering. The stated task instead calls for case insensitive search.

D:

This action targets overwrite output redirection: The > operator redirects standard output and truncates the target before writing. The stated task instead calls for case insensitive search.

Question 278

An operator follows this instruction: Run grep -i 'warning' service.log. For the task described as "case insensitive search", what is the most accurate expected result?

  1. The -n option prefixes matching lines with their line numbers.
  2. The pipe sends standard output of the first command to grep for filtering.
  3. The -i flag makes grep ignore letter case when matching.
  4. The > operator redirects standard output and truncates the target before writing.

Explanation

Correct Answer

C:

Correct consequence of Run grep -i 'warning' service.log. This outcome explains its use for case insensitive search.

Incorrect Answers

A:

This outcome belongs to line-numbered search results and would follow Run grep -n 'TODO' app.py; it is not the principal result of Run grep -i 'warning' service.log.

B:

This outcome belongs to pipeline matching output and would follow Run status_command through the pipe operator into grep 'active'; it is not the principal result of Run grep -i 'warning' service.log.

D:

This outcome belongs to overwrite output redirection and would follow Run report_command > summary.txt; it is not the principal result of Run grep -i 'warning' service.log.

Question 279

The log might contain warning, WARNING or Warning and all variants must be found. A teammate tries this different approach instead: Run grep -n 'TODO' app.py. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Run grep -n 'TODO' app.py
  2. Run status_command through the pipe operator into grep 'active'
  3. Run report_command > summary.txt
  4. Run grep -i 'warning' service.log

Explanation

Correct Answer

D:

Replace the attempt with this step: The -i flag makes grep ignore letter case when matching. It fits case insensitive search.

Incorrect Answers

A:

This step is specific to line-numbered search results: The -n option prefixes matching lines with their line numbers. It does not fix the stated requirement for case insensitive search.

B:

This step is specific to pipeline matching output: The pipe sends standard output of the first command to grep for filtering. It does not fix the stated requirement for case insensitive search.

C:

This step is specific to overwrite output redirection: The > operator redirects standard output and truncates the target before writing. It does not fix the stated requirement for case insensitive search.

Question 280

The log might contain warning, WARNING or Warning and all variants must be found. One student proposes Run grep -i 'warning' service.log and another proposes Run status_command through the pipe operator into grep 'active'. Which technical comparison is the soundest?

  1. Run grep -i 'warning' service.log is used because The -i flag makes grep ignore letter case when matching. The alternative Run status_command through the pipe operator into grep 'active' addresses pipeline matching output instead.
  2. Run status_command through the pipe operator into grep 'active' is more directly suited to case insensitive search than Run grep -i 'warning' service.log, regardless of the stated constraint.
  3. The two actions are interchangeable for case insensitive search and necessarily have the same main result.
  4. Run report_command > summary.txt is the only useful action for case insensitive search; Run grep -i 'warning' service.log has no relevant effect.

Explanation

Correct Answer

A:

Correct distinction: Run grep -i 'warning' service.log targets case insensitive search; The -i flag makes grep ignore letter case when matching. The compared alternative instead serves pipeline matching output.

Incorrect Answers

B:

Incorrect mapping: Run status_command through the pipe operator into grep 'active' is used for pipeline matching output. It does not displace Run grep -i 'warning' service.log for the described requirement.

C:

The mechanisms are different: The -i flag makes grep ignore letter case when matching. By contrast, The pipe sends standard output of the first command to grep for filtering. They are not universally interchangeable.

D:

The third option addresses overwrite output redirection: The > operator redirects standard output and truncates the target before writing. The original action remains relevant because The -i flag makes grep ignore letter case when matching.