An Administrator Has a CSV File Named Hosts

question 240

Multiple Choice

An administrator has a CSV file named hosts.csv . The contents of include the following: 192.168.2.57,lnx1prd.example.com,Linux,Production 192.168.2.58,lnx2prd.example.com,Linux,Production 192.168.1.4,server15.example.com,Windows,Development The administrator needs to create a second comma-separated list of only the Linux server IP addresses. Which of the following commands would achieve this need?

• A) for ip in $(grep "Linux" hosts.csv | cut -d"," -f1); do echo -n "$ip,"; done
• B) for ip in $( cut -d"," -f1 hosts.csv | grep "Linux"); do echo -n "$ip,"; done
• C) for ip in $(grep "Linux" hosts.csv | sed "/$1//'); do echo -n "$ip,"; done
• D) for ip in $(awk -F, '{print $1}' hosts.csv | grep "Linux"); do echo -n "$ip,"; done

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Definitions:

Imitation

The action of copying or mimicking the behaviors, actions, or sounds of others as a form of learning or social interaction.

Reinforcement

This psychological principle involves the use of consequences to strengthen an organism's future behavior whenever that behavior is preceded by a specific antecedent stimulus.

Learning Theory

An educational framework that explains how individuals acquire knowledge, skills, and behaviors through experience.

Classical Conditioning

A learning process that occurs through associations between an environmental stimulus and a naturally occurring stimulus.