ACE-P-ALE1.04 EXAM PREPARATION

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Question #1 (Topic: Demo Questions)

In a bash script, which of the following is the most common way to send output to the screen?

echo

write

send

Correct Answer: A

Question #2 (Topic: Demo Questions)

What is the two-character sequence at the top of scripts, which tells the kernel what interpreter to use, called?

Scripthash

Bangscript

Hashscript

Shebang

Correct Answer: D

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

Question #3 (Topic: Demo Questions)

The cron system is used to

set the system clock

run something at a later time

schedule something to run at intervals

timestamp the system logs

Correct Answer: C

Explanation:

[Reference: https://en.wikipedia.org/wiki/Cron, , ]

Question #4 (Topic: Demo Questions)

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

sort

cut

paste

diff

grep

Correct Answer: A

Explanation:

[: https://swcarpentry.github.io/shell-novice/04-pipefilter/, , ]

Question #5 (Topic: Demo Questions)

Which special device provides a place for redirecting unneeded data?

/dev/null

/dev/zero

/dev/urandom

/dev/blank

Correct Answer: A

Explanation:

[Reference: https://bash.cyberciti.biz/guide//dev/null_discards_unwanted_output, , ]

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