ACE-P-ALE1.04 Online Practice Questions and Answers

What term is used for the beginning of time for UNIX?

A. Epoch

B. Zero-hour

C. Birth

D. Dawn

E. Awakening

In /etc/shadow, what indicates a locked password?

A. !

B. !!

C. *LK

D. *

E. All of these

How much swap space is available on Arista switches?

A. 4GB

B. 0 bytes

C. 1GB

D. 640kB

If one or more CPUs in a system is extremely busy (less than 25% idle) but the run queue is relatively low, what might the system need to improve performance?

A. Faster CPUs

B. More CPUs

C. More memory

D. Faster hard drives

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

RHEL is a popular distribution from which core tree?

A. Fedora

B. Linux

C. Debian

D. Slackware

The three permissions in the file mode are

A. owner/group/world

B. read/write/execute

C. user/group/other

D. setuid/setgid and sticky

The ps 璭f command is from which UNIX variant?

A. AIX

B. System V

C. Linux

D. BSD

Which of the following is true when using the mv command to move a file to a new location on the same filesystem?

A. It is not recommended because the filesystem could be corrupted

B. It is slow because the data has to be read and written

C. It is not recommended, and the cp command should be used instead

D. It is very fast because only the directory entry needs updating

In regular expressions, three quantifier operators are

A. (), [] and {}

B. (),. and *

C. (), * and ?

D. *, ? and +

What is the name of the Linux mascot?

A. Linus

B. Bell

C. Tux

D. Dennis Ritchie

What character is used as shorthand for your homedir?

A. $

B. #

C. .

D. ~

Which utility can be used to compare the content of two files?

A. sort

B. cut

C. paste

D. diff

E. grep

Which utility can be used to place a stream of input in order numerically or alphabetically?

A. sort

B. cut

C. paste

D. diff

E. grep

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

A. $(( ))

B. ${}

C. $[]

D. let