A new HTTPS web service is being deployed on a server. Which of the following commands should the Linux administrator use to ensure traffic is able to flow through the system firewall to the new service?

• A.iptables -I OUTPUT -p tcp --sport 443 -j ACCEPT
• B.iptables -A INPUT -p tcp --dport 443 -j ACCEPT
• C.iptables -I INPUT --dport 443 -j ACCEPT
• D.iptables -A OUTPUT -p tcp --dport 443 -j ACCEPT

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A junior Linux administrator is setting up system-wide configuration settings. The goal is to ensure the PATH environment variable includes the following locations for all users who log into a Linux system.

The administrator issues the following commands at the terminal:

Respectively, the output of these commands is as follows:

Given this output, which of the following would be the BEST action for the administrator to perform to address this issue?

• A.Update the /etc/profile file using a text editor, navigate to the PATH element, add the missing locations and run the . /etc/profile command to update the changes.
• B.Update the /etc/profile.d file using a text editor, navigate to the PATH element, add the missing locations, and reboot to update the changes.
• C.Update the /etc/profile file using a text editor navigate to the PATH element, add the missing locations, and restart the bash process to update the changes.
• D.Update the /etc/profile.d file using a text editor, navigate to the PATH element add the missing locations, and run the bash_completion.sh script to update the changes.

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A systems administrator documents the instructions on the internal wiki regarding how to turn the company's code into Debian packages. The instructions include the commands used to compile, what tests need to be run, the commands to convert the raw code into a package that apt or dpkg can manage, as well as an of each command.
Which of the following is this an example of?

• A.Procedures
• B.Attributes
• C.Configuration management
• D.Infrastructure as code

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A user needs to modify the IP address of a laptop. Which of the following files can be used to configure the network interface named eth0?

• A./etc/sysconfig/network/interfaces.cnf
• B./system/config/interfaces
• C./etc/sysconfig/network-scripts/ifcfg-eth0
• D./system/networking/ifconfig
• E./etc/interfaces/eth0.conf

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A systems administrator needs to retrieve specific fields from a csv file. Which of the following tools would accomplish this task?

• A.awk
• B.sort
• C.print
• D.echo

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