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ACE-P-ALE1.04 Real Exam Questions

Arista Linux Essentials

99 questions available · Page 1 of 10

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Question 1 Single choice

In regular expressions, three quantifier operators are

  1. A

    (), [] and {}

  2. B

    (),. and *

  3. C

    (), * and ?

  4. D

    *, ? and +

Show answer and explanation

Correct answer: D

Explanation

References:
https://www.perlmonks.org/?node_id=967

Question 2 Single choice

If there are three arguments on the command line to a bash script, what will be the contents of $# builtin variable?

  1. A

    0

  2. B

    1

  3. C

    2

  4. D

    3

  5. E

    4

Show answer and explanation

Correct answer: D

Question 3 Single choice

Which if these is NOT true of symbolic, or soft, links?

  1. A

    Has its own inode

  2. B

    Is just a directory entry

  3. C

    Can cross mount points

  4. D

    Can point to a directory

Show answer and explanation

Correct answer: C

Question 4 Single choice

To negate a set in a regular expression pattern, which character is used?

  1. A

    !

  2. B

    ^

  3. C

    ?

  4. D

    -

Show answer and explanation

Correct answer: B

Explanation

References:
https://www.ics.uci.edu/~alspaugh/cls/shr/regularExpression.html

Question 5 Single choice

When configuring SSH, which file is needed for key-based authentication?

  1. A

    known_hosts

  2. B

    /etc/shadow

  3. C

    /etc/passwd

  4. D

    authorized_keys

Show answer and explanation

Correct answer: D

Explanation

References:
https://www.digitalocean.com/community/tutorials/how-to-configure-ssh-key-based-
authentication-on-a-linux-server

Question 6 Single choice

On older Fedora Core systems, which dependency manager is used?

  1. A

    apt

  2. B

    deb

  3. C

    rpm

  4. D

    yum

  5. E

    dnf

Show answer and explanation

Correct answer: E

Question 7 Single choice

On a typical Linux system, where is the boot loader located?

  1. A

    BIOS

  2. B

    MBR

  3. C

    VBR

  4. D

    Kernel

Show answer and explanation

Correct answer: B

Question 8 Single choice

In regular expressions, to what does greedy vs.
lazy refer?

  1. A

    How many lines in a file the pattern will match

  2. B

    How many times the pattern will match on a line

  3. C

    How strict the pattern is required to be

  4. D

    Whether the pattern quantifiers will stop at whitespace

Show answer and explanation

Correct answer: D

Explanation

References:
https://stackoverflow.com/questions/2301285/what-do-lazy-and-greedy-mean-in-the-context-of-regular-expressions

Question 9 Single choice

True or false: an SSH private key should never be shared with other users or host systems.

  1. A

    TRUE

  2. B

    FALSE

Show answer and explanation

Correct answer: A

Question 10 Single choice

Who invented NFS?

  1. A

    Linus Torvalds

  2. B

    IBM

  3. C

    DEC

  4. D

    Sun Microsystems

Show answer and explanation

Correct answer: D

Explanation

References:
https://en.wikipedia.org/wiki/Network_File_System