QUESTION: 49

Which of the following is a function of a bootloader?

It initializes all the devices that are required to load the OS.
It mounts the root filesystem that is required to load the OS.
It helps to load the different kernels to initiate the OS startup process.
It triggers the start of all the system services.

Answer(s): A

A systems administrator configured firewall rules using firewalld. However, after the system is rebooted, the firewall rules are not present:
The systems administrator makes additional checks:
Which of the following is the reason the firewall rules are not active?

iptables is conflicting with firewalld.
The wrong system target is activated.
FIREWALL_ARGS has no value assigned.
The firewalld service is not enabled.

Answer(s): D

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QUESTION: 51

A newly created container has been unable to start properly, and a Linux administrator is analyzing the cause of the failure. Which of the following will allow the administrator to determine the FIRST command that is executed inside the container right after it starts?

docker export <container_id>
docker info <container_id>
docker start <container_id>
docker inspect <container_id>

Answer(s): D

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QUESTION: 52

A Linux administrator is scheduling a system job that runs a script to check available disk space every hour. The Linux administrator does not want users to be able to start the job. Given the following:
The Linux administrator attempts to start the timer service but receives the following error message:
Which of the following is MOST likely the reason the timer will not start?

The checkdiskspace.timer unit should be enabled via systemctl.
The timers.target should be reloaded to get the new configuration.
The checkdiskspace.timer should be configured to allow manual starts.
The checkdiskspace.timer should be started using the sudo command.

Answer(s): C

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QUESTION: 52

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