Arista ACE-P-ALE1.04 Online Practice Questions and Exam Preparation

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

• Question 51:

  What is the difference between bin directories and sbin directories?

  A. It doesn't matter ?binaries are randomly placed in one or the other
  B. Executables in sbin require root access
  C. Executables in bin are for all users, while sbin is for system-related executables generally used by the root user
  D. They are linked, so they both hold the same executables
  C. Executables in bin are for all users, while sbin is for system-related executables generally used by the root user

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  Explanation/Reference:

  Reference: http://blog.taylormcgann.com/2014/04/11/difference-bin-sbin/

• Question 52:

  In regular expressions, three quantifier operators are

  A. (), [] and {}
  B. (),. and *
  C. (), * and ?
  D. *, ? and +
  D. *, ? and +

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  Explanation/Reference:

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

• Question 53:

  Which of these items runs in user space?

  A. System daemons
  B. The IPC system
  C. The process scheduler
  D. Libraries and APIs
  E. The C Standard Library
  D. Libraries and APIs

• Question 54:

  What does the ctime of a file indicate?

  A. Creation time
  B. Change time
  C. Content time
  D. Character time
  B. Change time

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  Explanation/Reference:

  Reference: https://www.unixtutorial.org/2008/04/atime-ctime-mtime-in-unix-filesystems/

• Question 55:

  In file globbing, which symbol matches any single character?

  A. *
  B. ?
  C. []
  D. .
  A. *

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  Explanation/Reference:

  Reference: https://unix.stackexchange.com/questions/123296/what-is-the-symbol-called

• Question 56:

  The at system is used to

  A. set the system clock
  B. run something at a later time
  C. schedule something to run at intervals
  D. timestamp the system logs
  B. run something at a later time

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  Explanation/Reference:

  Reference: https://en.wikipedia.org/wiki/At_(Unix)

• Question 57:

  What software is contained in a Linux distribution?

  A. The full operating system, including the kernel, package manager, GNU tools and libraries, documentation, a GUI, and other software.
  B. Optional software that sits on top of the kernel and includes package management and a GUI.
  C. A repository of optional software available to install via the package management system.
  D. A specially modified kernel designed to perform one task extremely well.
  A. The full operating system, including the kernel, package manager, GNU tools and libraries, documentation, a GUI, and other software.

• Question 58:

  In bash scripting, which of the following is NOT valid way of evaluating an arithmetic expression?

  A. $(( ))
  B. ${}
  C. $[]
  D. let
  C. $[]

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  Explanation/Reference:

  https://ryanstutorials.net/bash-scripting-tutorial/bash-arithmetic.php

• Question 59:

  The three special file modes are

  A. owner/group/world
  B. read/write/execute
  C. user/group/others
  D. setuid/setgid and sticky
  D. setuid/setgid and sticky

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  Explanation/Reference:

  Reference: https://en.wikipedia.org/wiki/Modes_(Unix)

• Question 60:

  Where did the GECOS field in /etc/passwd come from?

  A. Bell Labs DHCP lease tracking
  B. Payroll name and address info
  C. Bell Labs Print Service
  D. Parking space assignments at ATandT
  C. Bell Labs Print Service