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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 33

Question 320

A script needs to request Bash as its interpreter when executed directly. One student proposes Place #!/bin/bash as the first line of the script and another proposes Forward arguments using "$@". Which technical comparison is the soundest?

  1. Forward arguments using "$@" is more directly suited to Bash interpreter shebang than Place #!/bin/bash as the first line of the script, regardless of the stated constraint.
  2. The two actions are interchangeable for Bash interpreter shebang and necessarily have the same main result.
  3. Place #!/bin/bash as the first line of the script is used because The shebang tells the operating system which interpreter to use for direct execution. The alternative Forward arguments using "$@" addresses preserve multiple arguments instead.
  4. Use a for name in ...; do ...; done loop is the only useful action for Bash interpreter shebang; Place #!/bin/bash as the first line of the script has no relevant effect.

Explanation

Correct Answer

C:

Correct distinction: Place #!/bin/bash as the first line of the script targets Bash interpreter shebang; The shebang tells the operating system which interpreter to use for direct execution. The compared alternative instead serves preserve multiple arguments.

Incorrect Answers

A:

Incorrect mapping: Forward arguments using "$@" is used for preserve multiple arguments. It does not displace Place #!/bin/bash as the first line of the script for the described requirement.

B:

The mechanisms are different: The shebang tells the operating system which interpreter to use for direct execution. By contrast, Double-quoted $@ expands to separate arguments while preserving each argument's boundaries. They are not universally interchangeable.

D:

The third option addresses iterate over filenames: A for loop repeats the body for each word or list element. The original action remains relevant because The shebang tells the operating system which interpreter to use for direct execution.

Question 321

A Bash script must read the first word supplied after its command name. Which action most directly addresses this requirement on a Linux-related system?

  1. Refer to the first positional parameter as "$1"
  2. Forward arguments using "$@"
  3. Use a for name in ...; do ...; done loop
  4. Use if test_command; then echo 'success'; fi

Explanation

Correct Answer

A:

Correct for first script argument: The parameter $1 expands to the first positional argument.

Incorrect Answers

B:

This action targets preserve multiple arguments: Double-quoted $@ expands to separate arguments while preserving each argument's boundaries. The stated task instead calls for first script argument.

C:

This action targets iterate over filenames: A for loop repeats the body for each word or list element. The stated task instead calls for first script argument.

D:

This action targets conditional on command success: Bash if evaluates command exit status, treating zero as success. The stated task instead calls for first script argument.

Question 322

An operator follows this instruction: Refer to the first positional parameter as "$1". For the task described as "first script argument", what is the most accurate expected result?

  1. Double-quoted $@ expands to separate arguments while preserving each argument's boundaries.
  2. The parameter $1 expands to the first positional argument.
  3. A for loop repeats the body for each word or list element.
  4. Bash if evaluates command exit status, treating zero as success.

Explanation

Correct Answer

B:

Correct consequence of Refer to the first positional parameter as "$1". This outcome explains its use for first script argument.

Incorrect Answers

A:

This outcome belongs to preserve multiple arguments and would follow Forward arguments using "$@"; it is not the principal result of Refer to the first positional parameter as "$1".

C:

This outcome belongs to iterate over filenames and would follow Use a for name in ...; do ...; done loop; it is not the principal result of Refer to the first positional parameter as "$1".

D:

This outcome belongs to conditional on command success and would follow Use if test_command; then echo 'success'; fi; it is not the principal result of Refer to the first positional parameter as "$1".

Question 323

A Bash script must read the first word supplied after its command name. A teammate tries this different approach instead: Forward arguments using "$@". The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Forward arguments using "$@"
  2. Use a for name in ...; do ...; done loop
  3. Refer to the first positional parameter as "$1"
  4. Use if test_command; then echo 'success'; fi

Explanation

Correct Answer

C:

Replace the attempt with this step: The parameter $1 expands to the first positional argument. It fits first script argument.

Incorrect Answers

A:

This step is specific to preserve multiple arguments: Double-quoted $@ expands to separate arguments while preserving each argument's boundaries. It does not fix the stated requirement for first script argument.

B:

This step is specific to iterate over filenames: A for loop repeats the body for each word or list element. It does not fix the stated requirement for first script argument.

D:

This step is specific to conditional on command success: Bash if evaluates command exit status, treating zero as success. It does not fix the stated requirement for first script argument.

Question 324

A Bash script must read the first word supplied after its command name. One student proposes Refer to the first positional parameter as "$1" and another proposes Use a for name in ...; do ...; done loop. Which technical comparison is the soundest?

  1. Use a for name in ...; do ...; done loop is more directly suited to first script argument than Refer to the first positional parameter as "$1", regardless of the stated constraint.
  2. The two actions are interchangeable for first script argument and necessarily have the same main result.
  3. Use if test_command; then echo 'success'; fi is the only useful action for first script argument; Refer to the first positional parameter as "$1" has no relevant effect.
  4. Refer to the first positional parameter as "$1" is used because The parameter $1 expands to the first positional argument. The alternative Use a for name in ...; do ...; done loop addresses iterate over filenames instead.

Explanation

Correct Answer

D:

Correct distinction: Refer to the first positional parameter as "$1" targets first script argument; The parameter $1 expands to the first positional argument. The compared alternative instead serves iterate over filenames.

Incorrect Answers

A:

Incorrect mapping: Use a for name in ...; do ...; done loop is used for iterate over filenames. It does not displace Refer to the first positional parameter as "$1" for the described requirement.

B:

The mechanisms are different: The parameter $1 expands to the first positional argument. By contrast, A for loop repeats the body for each word or list element. They are not universally interchangeable.

C:

The third option addresses conditional on command success: Bash if evaluates command exit status, treating zero as success. The original action remains relevant because The parameter $1 expands to the first positional argument.

Question 325

A wrapper script must pass every original positional argument to another command without breaking arguments containing spaces. Which action most directly addresses this requirement on a Linux-related system?

  1. Use a for name in ...; do ...; done loop
  2. Forward arguments using "$@"
  3. Use if test_command; then echo 'success'; fi
  4. Run chmod u+x run.sh for its owner

Explanation

Correct Answer

B:

Correct for preserve multiple arguments: Double-quoted $@ expands to separate arguments while preserving each argument's boundaries.

Incorrect Answers

A:

This action targets iterate over filenames: A for loop repeats the body for each word or list element. The stated task instead calls for preserve multiple arguments.

C:

This action targets conditional on command success: Bash if evaluates command exit status, treating zero as success. The stated task instead calls for preserve multiple arguments.

D:

This action targets make script executable: The execute permission allows direct execution when the filesystem permits it. The stated task instead calls for preserve multiple arguments.

Question 326

An operator follows this instruction: Forward arguments using "$@". For the task described as "preserve multiple arguments", what is the most accurate expected result?

  1. A for loop repeats the body for each word or list element.
  2. Bash if evaluates command exit status, treating zero as success.
  3. Double-quoted $@ expands to separate arguments while preserving each argument's boundaries.
  4. The execute permission allows direct execution when the filesystem permits it.

Explanation

Correct Answer

C:

Correct consequence of Forward arguments using "$@". This outcome explains its use for preserve multiple arguments.

Incorrect Answers

A:

This outcome belongs to iterate over filenames and would follow Use a for name in ...; do ...; done loop; it is not the principal result of Forward arguments using "$@".

B:

This outcome belongs to conditional on command success and would follow Use if test_command; then echo 'success'; fi; it is not the principal result of Forward arguments using "$@".

D:

This outcome belongs to make script executable and would follow Run chmod u+x run.sh for its owner; it is not the principal result of Forward arguments using "$@".

Question 327

A wrapper script must pass every original positional argument to another command without breaking arguments containing spaces. A teammate tries this different approach instead: Use a for name in ...; do ...; done loop. The requirement is still unmet. Which corrective action should replace the misapplied approach?

  1. Use a for name in ...; do ...; done loop
  2. Use if test_command; then echo 'success'; fi
  3. Run chmod u+x run.sh for its owner
  4. Forward arguments using "$@"

Explanation

Correct Answer

D:

Replace the attempt with this step: Double-quoted $@ expands to separate arguments while preserving each argument's boundaries. It fits preserve multiple arguments.

Incorrect Answers

A:

This step is specific to iterate over filenames: A for loop repeats the body for each word or list element. It does not fix the stated requirement for preserve multiple arguments.

B:

This step is specific to conditional on command success: Bash if evaluates command exit status, treating zero as success. It does not fix the stated requirement for preserve multiple arguments.

C:

This step is specific to make script executable: The execute permission allows direct execution when the filesystem permits it. It does not fix the stated requirement for preserve multiple arguments.

Question 328

A wrapper script must pass every original positional argument to another command without breaking arguments containing spaces. One student proposes Forward arguments using "$@" and another proposes Use if test_command; then echo 'success'; fi. Which technical comparison is the soundest?

  1. Forward arguments using "$@" is used because Double-quoted $@ expands to separate arguments while preserving each argument's boundaries. The alternative Use if test_command; then echo 'success'; fi addresses conditional on command success instead.
  2. Use if test_command; then echo 'success'; fi is more directly suited to preserve multiple arguments than Forward arguments using "$@", regardless of the stated constraint.
  3. The two actions are interchangeable for preserve multiple arguments and necessarily have the same main result.
  4. Run chmod u+x run.sh for its owner is the only useful action for preserve multiple arguments; Forward arguments using "$@" has no relevant effect.

Explanation

Correct Answer

A:

Correct distinction: Forward arguments using "$@" targets preserve multiple arguments; Double-quoted $@ expands to separate arguments while preserving each argument's boundaries. The compared alternative instead serves conditional on command success.

Incorrect Answers

B:

Incorrect mapping: Use if test_command; then echo 'success'; fi is used for conditional on command success. It does not displace Forward arguments using "$@" for the described requirement.

C:

The mechanisms are different: Double-quoted $@ expands to separate arguments while preserving each argument's boundaries. By contrast, Bash if evaluates command exit status, treating zero as success. They are not universally interchangeable.

D:

The third option addresses make script executable: The execute permission allows direct execution when the filesystem permits it. The original action remains relevant because Double-quoted $@ expands to separate arguments while preserving each argument's boundaries.

Question 329

A script must apply the same command to each filename from a predefined list. Which action most directly addresses this requirement on a Linux-related system?

  1. Use if test_command; then echo 'success'; fi
  2. Run chmod u+x run.sh for its owner
  3. Use a for name in ...; do ...; done loop
  4. Run bash script.sh

Explanation

Correct Answer

C:

Correct for iterate over filenames: A for loop repeats the body for each word or list element.

Incorrect Answers

A:

This action targets conditional on command success: Bash if evaluates command exit status, treating zero as success. The stated task instead calls for iterate over filenames.

B:

This action targets make script executable: The execute permission allows direct execution when the filesystem permits it. The stated task instead calls for iterate over filenames.

D:

This action targets invoke with Bash explicitly: Passing a file as an argument to bash interprets it without requiring that file's execute bit. The stated task instead calls for iterate over filenames.

Question 330

An operator follows this instruction: Use a for name in ...; do ...; done loop. For the task described as "iterate over filenames", what is the most accurate expected result?

  1. Bash if evaluates command exit status, treating zero as success.
  2. The execute permission allows direct execution when the filesystem permits it.
  3. Passing a file as an argument to bash interprets it without requiring that file's execute bit.
  4. A for loop repeats the body for each word or list element.

Explanation

Correct Answer

D:

Correct consequence of Use a for name in ...; do ...; done loop. This outcome explains its use for iterate over filenames.

Incorrect Answers

A:

This outcome belongs to conditional on command success and would follow Use if test_command; then echo 'success'; fi; it is not the principal result of Use a for name in ...; do ...; done loop.

B:

This outcome belongs to make script executable and would follow Run chmod u+x run.sh for its owner; it is not the principal result of Use a for name in ...; do ...; done loop.

C:

This outcome belongs to invoke with Bash explicitly and would follow Run bash script.sh; it is not the principal result of Use a for name in ...; do ...; done loop.