Arista Arista Certifications ACE-P-ALE1.04 Questions & Answers

• Question 21:

  Which two characters are required at the top of a script to inform the kernel on which interpreter to use? (choose two)

  A. !!

  B. $!

  C. #$

  D. #!

  Correct Answer: BD

• Question 22:

  Which of these statements is true?

  A. "." And "..." are always used in absolute paths

  B. Absolute paths start with a "/"

  C. Best practice is to always use absolute paths in scripts and when running commands as root

  D. Relative paths can start with a "/"

  Correct Answer: B

• Question 23:

  Which of the following are valid examples of script interpreters?

  A. /usr/bin/bash

  B. /usr/bin/perl

  C. /usr/bin/python

  D. /usr/bin/Cli

  E. All of them

  Correct Answer: D

• Question 24:

  On an Arista switch, where in the filesystem is the flash drive mounted?

  A. /root

  B. /boot

  C. /mnt

  D. /etc

  Correct Answer: C

  Reference: https://www.arista.com/assets/data/pdf/user-manual/um- eos/Chapters/6_Booting%20the%20Switch.pdf

• Question 25:

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

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 26:

  In bash scripting, which of the following comparison operators are used on strings?

  A. -gt

  B. -eq

  C. ==

  D. <=

  E. -f

  Correct Answer: C

• Question 27:

  Which special device provides a place for redirecting unneeded data?

  A. /dev/null

  B. /dev/zero

  C. /dev/urandom

  D. /dev/blank

  Correct Answer: A

  Reference: https://bash.cyberciti.biz/guide//dev/null_discards_unwanted_output

• Question 28:

  Which utility can be used to remove sections or columns of each line of input?

  A. sort

  B. cut

  C. paste

  D. diff

  E. grep

  Correct Answer: B

• Question 29:

  Which utility can be used to merge sequentially corresponding lines of input streams into a single output stream?

  A. sort

  B. cut

  C. paste

  D. diff

  E. grep

  Correct Answer: C

• Question 30:

  Which of these shells are POSIX compliant?

  A. bash

  B. ksh

  C. csh

  D. zsh

  Correct Answer: B

  Reference: https://en.wikibooks.org/wiki/Guide_to_Unix/Explanations/Choice_of_Shell