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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 31

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.

Question 301

A colon-separated list contains usernames in its first field and a script needs only those fields. Which action most directly addresses this requirement on a Linux-related system?

  1. Run sort names.txt
  2. Run wc -l records.txt
  3. Run tail -n 25 application.log
  4. Run cut -d: -f1 accounts.txt

Explanation

Correct Answer

D:

Correct for extract delimited column: cut uses colon as field delimiter and selects the first field.

Incorrect Answers

A:

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

B:

This action targets count input lines: wc -l counts newline characters, commonly used to count complete lines. The stated task instead calls for extract delimited column.

C:

This action targets inspect final log lines: tail displays the specified number of lines from the end of the file. The stated task instead calls for extract delimited column.

Question 302

An operator follows this instruction: Run cut -d: -f1 accounts.txt. For the task described as "extract delimited column", 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. tail displays the specified number of lines from the end of the file.

Explanation

Correct Answer

A:

Correct consequence of Run cut -d: -f1 accounts.txt. This outcome explains its use for extract delimited column.

Incorrect Answers

B:

This outcome belongs to sort text lines and would follow Run sort names.txt; it is not the principal result of Run cut -d: -f1 accounts.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 cut -d: -f1 accounts.txt.

D:

This outcome belongs to inspect final log lines and would follow Run tail -n 25 application.log; it is not the principal result of Run cut -d: -f1 accounts.txt.

Question 303

A colon-separated list contains usernames in its first field and a script needs only those fields. A teammate tries this different approach instead: Run sort names.txt. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Run sort names.txt
  2. Run cut -d: -f1 accounts.txt
  3. Run wc -l records.txt
  4. Run tail -n 25 application.log

Explanation

Correct Answer

B:

Replace the attempt with this step: cut uses colon as field delimiter and selects the first field. It fits extract delimited column.

Incorrect Answers

A:

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 extract delimited column.

C:

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 extract delimited column.

D:

This step is specific to inspect final log lines: tail displays the specified number of lines from the end of the file. It does not fix the stated requirement for extract delimited column.

Question 304

A colon-separated list contains usernames in its first field and a script needs only those fields. One student proposes Run cut -d: -f1 accounts.txt and another proposes Run wc -l records.txt. Which technical comparison is the soundest?

  1. Run wc -l records.txt is more directly suited to extract delimited column than Run cut -d: -f1 accounts.txt, regardless of the stated constraint.
  2. The two actions are interchangeable for extract delimited column and necessarily have the same main result.
  3. Run cut -d: -f1 accounts.txt is used because cut uses colon as field delimiter and selects the first field. The alternative Run wc -l records.txt addresses count input lines instead.
  4. Run tail -n 25 application.log is the only useful action for extract delimited column; Run cut -d: -f1 accounts.txt has no relevant effect.

Explanation

Correct Answer

C:

Correct distinction: Run cut -d: -f1 accounts.txt targets extract delimited column; cut uses colon as field delimiter and selects the first field. The compared alternative instead serves count input lines.

Incorrect Answers

A:

Incorrect mapping: Run wc -l records.txt is used for count input lines. It does not displace Run cut -d: -f1 accounts.txt for the described requirement.

B:

The mechanisms are different: cut uses colon as field delimiter and selects the first field. By contrast, wc -l counts newline characters, commonly used to count complete lines. They are not universally interchangeable.

D:

The third option addresses inspect final log lines: tail displays the specified number of lines from the end of the file. The original action remains relevant because cut uses colon as field delimiter and selects the first field.

Question 305

A student must arrange the lines of names.txt in lexical order. Which action most directly addresses this requirement on a Linux-related system?

  1. Run sort names.txt
  2. Run wc -l records.txt
  3. Run tail -n 25 application.log
  4. Run grep 'ERROR' service.log

Explanation

Correct Answer

A:

Correct for sort text lines: sort orders input lines according to the active locale's collation rules.

Incorrect Answers

B:

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

C:

This action targets inspect final log lines: tail displays the specified number of lines from the end of the file. The stated task instead calls for sort text lines.

D:

This action targets find matching lines with grep: grep selects file lines that match the supplied pattern. The stated task instead calls for sort text lines.

Question 306

An operator follows this instruction: Run sort names.txt. For the task described as "sort text lines", what is the most accurate expected result?

  1. wc -l counts newline characters, commonly used to count complete lines.
  2. sort orders input lines according to the active locale's collation rules.
  3. tail displays the specified number of lines from the end of the file.
  4. grep selects file lines that match the supplied pattern.

Explanation

Correct Answer

B:

Correct consequence of Run sort names.txt. This outcome explains its use for sort text lines.

Incorrect Answers

A:

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

C:

This outcome belongs to inspect final log lines and would follow Run tail -n 25 application.log; it is not the principal result of Run sort names.txt.

D:

This outcome belongs to find matching lines with grep and would follow Run grep 'ERROR' service.log; it is not the principal result of Run sort names.txt.

Question 307

A student must arrange the lines of names.txt in lexical order. A teammate tries this different approach instead: Run wc -l records.txt. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Run wc -l records.txt
  2. Run tail -n 25 application.log
  3. Run sort names.txt
  4. Run grep 'ERROR' service.log

Explanation

Correct Answer

C:

Replace the attempt with this step: sort orders input lines according to the active locale's collation rules. It fits sort text lines.

Incorrect Answers

A:

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 sort text lines.

B:

This step is specific to inspect final log lines: tail displays the specified number of lines from the end of the file. It does not fix the stated requirement for sort text lines.

D:

This step is specific to find matching lines with grep: grep selects file lines that match the supplied pattern. It does not fix the stated requirement for sort text lines.

Question 308

A student must arrange the lines of names.txt in lexical order. One student proposes Run sort names.txt and another proposes Run tail -n 25 application.log. Which technical comparison is the soundest?

  1. Run tail -n 25 application.log is more directly suited to sort text lines than Run sort names.txt, regardless of the stated constraint.
  2. The two actions are interchangeable for sort text lines and necessarily have the same main result.
  3. Run grep 'ERROR' service.log is the only useful action for sort text lines; Run sort names.txt has no relevant effect.
  4. Run sort names.txt is used because sort orders input lines according to the active locale's collation rules. The alternative Run tail -n 25 application.log addresses inspect final log lines instead.

Explanation

Correct Answer

D:

Correct distinction: Run sort names.txt targets sort text lines; sort orders input lines according to the active locale's collation rules. The compared alternative instead serves inspect final log lines.

Incorrect Answers

A:

Incorrect mapping: Run tail -n 25 application.log is used for inspect final log lines. It does not displace Run sort names.txt for the described requirement.

B:

The mechanisms are different: sort orders input lines according to the active locale's collation rules. By contrast, tail displays the specified number of lines from the end of the file. They are not universally interchangeable.

C:

The third option addresses find matching lines with grep: grep selects file lines that match the supplied pattern. The original action remains relevant because sort orders input lines according to the active locale's collation rules.

Question 309

An operator needs the number of newline-terminated records in a text file. Which action most directly addresses this requirement on a Linux-related system?

  1. Run tail -n 25 application.log
  2. Run wc -l records.txt
  3. Run grep 'ERROR' service.log
  4. Run grep -i 'warning' service.log

Explanation

Correct Answer

B:

Correct for count input lines: wc -l counts newline characters, commonly used to count complete lines.

Incorrect Answers

A:

This action targets inspect final log lines: tail displays the specified number of lines from the end of the file. The stated task instead calls for count input lines.

C:

This action targets find matching lines with grep: grep selects file lines that match the supplied pattern. The stated task instead calls for count input lines.

D:

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

Question 310

An operator follows this instruction: Run wc -l records.txt. For the task described as "count input lines", what is the most accurate expected result?

  1. tail displays the specified number of lines from the end of the file.
  2. grep selects file lines that match the supplied pattern.
  3. wc -l counts newline characters, commonly used to count complete lines.
  4. The -i flag makes grep ignore letter case when matching.

Explanation

Correct Answer

C:

Correct consequence of Run wc -l records.txt. This outcome explains its use for count input lines.

Incorrect Answers

A:

This outcome belongs to inspect final log lines and would follow Run tail -n 25 application.log; it is not the principal result of Run wc -l records.txt.

B:

This outcome belongs to find matching lines with grep and would follow Run grep 'ERROR' service.log; it is not the principal result of Run wc -l records.txt.

D:

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