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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 30

Question 290

An operator follows this instruction: Run report_command > summary.txt. For the task described as "overwrite output redirection", what is the most accurate expected result?

  1. The >> operator appends standard output to the destination file.
  2. The > operator redirects standard output and truncates the target before writing.
  3. File descriptor 2 is standard error and 2> redirects it independently of stdout.
  4. cut uses colon as field delimiter and selects the first field.

Explanation

Correct Answer

B:

Correct consequence of Run report_command > summary.txt. This outcome explains its use for overwrite output redirection.

Incorrect Answers

A:

This outcome belongs to append output redirection and would follow Run report_command >> journal.txt; it is not the principal result of Run report_command > summary.txt.

C:

This outcome belongs to redirect error stream separately and would follow Run command 2> errors.txt; it is not the principal result of Run report_command > summary.txt.

D:

This outcome belongs to extract delimited column and would follow Run cut -d: -f1 accounts.txt; it is not the principal result of Run report_command > summary.txt.

Question 291

A report command must replace the previous contents of summary.txt with new stdout. A teammate tries this different approach instead: Run report_command >> journal.txt. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Run report_command >> journal.txt
  2. Run command 2> errors.txt
  3. Run report_command > summary.txt
  4. Run cut -d: -f1 accounts.txt

Explanation

Correct Answer

C:

Replace the attempt with this step: The > operator redirects standard output and truncates the target before writing. It fits overwrite output redirection.

Incorrect Answers

A:

This step is specific to append output redirection: The >> operator appends standard output to the destination file. It does not fix the stated requirement for overwrite output redirection.

B:

This step is specific to redirect error stream separately: File descriptor 2 is standard error and 2> redirects it independently of stdout. It does not fix the stated requirement for overwrite output redirection.

D:

This step is specific to extract delimited column: cut uses colon as field delimiter and selects the first field. It does not fix the stated requirement for overwrite output redirection.

Question 292

A report command must replace the previous contents of summary.txt with new stdout. One student proposes Run report_command > summary.txt and another proposes Run command 2> errors.txt. Which technical comparison is the soundest?

  1. Run command 2> errors.txt is more directly suited to overwrite output redirection than Run report_command > summary.txt, regardless of the stated constraint.
  2. The two actions are interchangeable for overwrite output redirection and necessarily have the same main result.
  3. Run cut -d: -f1 accounts.txt is the only useful action for overwrite output redirection; Run report_command > summary.txt has no relevant effect.
  4. Run report_command > summary.txt is used because The > operator redirects standard output and truncates the target before writing. The alternative Run command 2> errors.txt addresses redirect error stream separately instead.

Explanation

Correct Answer

D:

Correct distinction: Run report_command > summary.txt targets overwrite output redirection; The > operator redirects standard output and truncates the target before writing. The compared alternative instead serves redirect error stream separately.

Incorrect Answers

A:

Incorrect mapping: Run command 2> errors.txt is used for redirect error stream separately. It does not displace Run report_command > summary.txt for the described requirement.

B:

The mechanisms are different: The > operator redirects standard output and truncates the target before writing. By contrast, File descriptor 2 is standard error and 2> redirects it independently of stdout. They are not universally interchangeable.

C:

The third option addresses extract delimited column: cut uses colon as field delimiter and selects the first field. The original action remains relevant because The > operator redirects standard output and truncates the target before writing.

Question 293

A scheduled report should add a new line to an existing journal without erasing older lines. Which action most directly addresses this requirement on a Linux-related system?

  1. Run command 2> errors.txt
  2. Run report_command >> journal.txt
  3. Run cut -d: -f1 accounts.txt
  4. Run sort names.txt

Explanation

Correct Answer

B:

Correct for append output redirection: The >> operator appends standard output to the destination file.

Incorrect Answers

A:

This action targets redirect error stream separately: File descriptor 2 is standard error and 2> redirects it independently of stdout. The stated task instead calls for append output redirection.

C:

This action targets extract delimited column: cut uses colon as field delimiter and selects the first field. The stated task instead calls for append output redirection.

D:

This action targets sort text lines: sort orders input lines according to the active locale's collation rules. The stated task instead calls for append output redirection.

Question 294

An operator follows this instruction: Run report_command >> journal.txt. For the task described as "append output redirection", what is the most accurate expected result?

  1. File descriptor 2 is standard error and 2> redirects it independently of stdout.
  2. cut uses colon as field delimiter and selects the first field.
  3. The >> operator appends standard output to the destination file.
  4. sort orders input lines according to the active locale's collation rules.

Explanation

Correct Answer

C:

Correct consequence of Run report_command >> journal.txt. This outcome explains its use for append output redirection.

Incorrect Answers

A:

This outcome belongs to redirect error stream separately and would follow Run command 2> errors.txt; it is not the principal result of Run report_command >> journal.txt.

B:

This outcome belongs to extract delimited column and would follow Run cut -d: -f1 accounts.txt; it is not the principal result of Run report_command >> journal.txt.

D:

This outcome belongs to sort text lines and would follow Run sort names.txt; it is not the principal result of Run report_command >> journal.txt.

Question 295

A scheduled report should add a new line to an existing journal without erasing older lines. A teammate tries this different approach instead: Run command 2> errors.txt. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Run command 2> errors.txt
  2. Run cut -d: -f1 accounts.txt
  3. Run sort names.txt
  4. Run report_command >> journal.txt

Explanation

Correct Answer

D:

Replace the attempt with this step: The >> operator appends standard output to the destination file. It fits append output redirection.

Incorrect Answers

A:

This step is specific to redirect error stream separately: File descriptor 2 is standard error and 2> redirects it independently of stdout. It does not fix the stated requirement for append output redirection.

B:

This step is specific to extract delimited column: cut uses colon as field delimiter and selects the first field. It does not fix the stated requirement for append output redirection.

C:

This step is specific to sort text lines: sort orders input lines according to the active locale's collation rules. It does not fix the stated requirement for append output redirection.

Question 296

A scheduled report should add a new line to an existing journal without erasing older lines. One student proposes Run report_command >> journal.txt and another proposes Run cut -d: -f1 accounts.txt. Which technical comparison is the soundest?

  1. Run report_command >> journal.txt is used because The >> operator appends standard output to the destination file. The alternative Run cut -d: -f1 accounts.txt addresses extract delimited column instead.
  2. Run cut -d: -f1 accounts.txt is more directly suited to append output redirection than Run report_command >> journal.txt, regardless of the stated constraint.
  3. The two actions are interchangeable for append output redirection and necessarily have the same main result.
  4. Run sort names.txt is the only useful action for append output redirection; Run report_command >> journal.txt has no relevant effect.

Explanation

Correct Answer

A:

Correct distinction: Run report_command >> journal.txt targets append output redirection; The >> operator appends standard output to the destination file. The compared alternative instead serves extract delimited column.

Incorrect Answers

B:

Incorrect mapping: Run cut -d: -f1 accounts.txt is used for extract delimited column. It does not displace Run report_command >> journal.txt for the described requirement.

C:

The mechanisms are different: The >> operator appends standard output to the destination file. By contrast, cut uses colon as field delimiter and selects the first field. They are not universally interchangeable.

D:

The third option addresses sort text lines: sort orders input lines according to the active locale's collation rules. The original action remains relevant because The >> operator appends standard output to the destination file.

Question 297

A command's error diagnostics must be saved in errors.txt while normal output remains visible. Which action most directly addresses this requirement on a Linux-related system?

  1. Run cut -d: -f1 accounts.txt
  2. Run sort names.txt
  3. Run command 2> errors.txt
  4. Run wc -l records.txt

Explanation

Correct Answer

C:

Correct for redirect error stream separately: File descriptor 2 is standard error and 2> redirects it independently of stdout.

Incorrect Answers

A:

This action targets extract delimited column: cut uses colon as field delimiter and selects the first field. The stated task instead calls for redirect error stream separately.

B:

This action targets sort text lines: sort orders input lines according to the active locale's collation rules. The stated task instead calls for redirect error stream separately.

D:

This action targets count input lines: wc -l counts newline characters, commonly used to count complete lines. The stated task instead calls for redirect error stream separately.

Question 298

An operator follows this instruction: Run command 2> errors.txt. For the task described as "redirect error stream separately", what is the most accurate expected result?

  1. cut uses colon as field delimiter and selects the first field.
  2. sort orders input lines according to the active locale's collation rules.
  3. wc -l counts newline characters, commonly used to count complete lines.
  4. File descriptor 2 is standard error and 2> redirects it independently of stdout.

Explanation

Correct Answer

D:

Correct consequence of Run command 2> errors.txt. This outcome explains its use for redirect error stream separately.

Incorrect Answers

A:

This outcome belongs to extract delimited column and would follow Run cut -d: -f1 accounts.txt; it is not the principal result of Run command 2> errors.txt.

B:

This outcome belongs to sort text lines and would follow Run sort names.txt; it is not the principal result of Run command 2> errors.txt.

C:

This outcome belongs to count input lines and would follow Run wc -l records.txt; it is not the principal result of Run command 2> errors.txt.

Question 299

A command's error diagnostics must be saved in errors.txt while normal output remains visible. A teammate tries this different approach instead: Run cut -d: -f1 accounts.txt. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Run command 2> errors.txt
  2. Run cut -d: -f1 accounts.txt
  3. Run sort names.txt
  4. Run wc -l records.txt

Explanation

Correct Answer

A:

Replace the attempt with this step: File descriptor 2 is standard error and 2> redirects it independently of stdout. It fits redirect error stream separately.

Incorrect Answers

B:

This step is specific to extract delimited column: cut uses colon as field delimiter and selects the first field. It does not fix the stated requirement for redirect error stream separately.

C:

This step is specific to sort text lines: sort orders input lines according to the active locale's collation rules. It does not fix the stated requirement for redirect error stream separately.

D:

This step is specific to count input lines: wc -l counts newline characters, commonly used to count complete lines. It does not fix the stated requirement for redirect error stream separately.

Question 300

A command's error diagnostics must be saved in errors.txt while normal output remains visible. One student proposes Run command 2> errors.txt and another proposes Run sort names.txt. Which technical comparison is the soundest?

  1. Run sort names.txt is more directly suited to redirect error stream separately than Run command 2> errors.txt, regardless of the stated constraint.
  2. Run command 2> errors.txt is used because File descriptor 2 is standard error and 2> redirects it independently of stdout. The alternative Run sort names.txt addresses sort text lines instead.
  3. The two actions are interchangeable for redirect error stream separately and necessarily have the same main result.
  4. Run wc -l records.txt is the only useful action for redirect error stream separately; Run command 2> errors.txt has no relevant effect.

Explanation

Correct Answer

B:

Correct distinction: Run command 2> errors.txt targets redirect error stream separately; File descriptor 2 is standard error and 2> redirects it independently of stdout. The compared alternative instead serves sort text lines.

Incorrect Answers

A:

Incorrect mapping: Run sort names.txt is used for sort text lines. It does not displace Run command 2> errors.txt for the described requirement.

C:

The mechanisms are different: File descriptor 2 is standard error and 2> redirects it independently of stdout. By contrast, sort orders input lines according to the active locale's collation rules. They are not universally interchangeable.

D:

The third option addresses count input lines: wc -l counts newline characters, commonly used to count complete lines. The original action remains relevant because File descriptor 2 is standard error and 2> redirects it independently of stdout.