QUESTION: 109

An administrator needs to disable root login over SSH. Which of the following tiles should be edited to complete this task?

/root.ssh/sshd/config
/etc.ssh/sshd_config
/root/.ssh/ssh_config
/etc.sshs_shd_config

Answer(s): B

Explanation:

To disable root login over SSH, the server administrator needs to edit the SSH configuration file located at /etc/ssh/sshd_config. This file contains various settings for the SSH daemon that runs on the server and accepts incoming SSH connections. The administrator needs to find the line that says PermitRootLogin and change it to no or comment it out with a # symbol. Then, the administrator needs to restart the SSH service for the changes to take effect.

Reference:

https://www.howtogeek.com/828538/how-and-why-to-disable-root-login-over-ssh-on-linux/

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QUESTION: 110

Users have noticed a server is performing below Baseline expectations.
While diagnosing me server, an administrator discovers disk drive performance has degraded. The administrator checks the diagnostics on the RAID controller and sees the battery on me controller has gone bad.
Which of the following is causing the poor performance on the RAID array?

The controller has disabled the write cache.
The controller cannot use all the available channels.
The drive array is corrupt.
The controller has lost its configuration.

Answer(s): A

Explanation:

The write cache is a feature of some RAID controllers that allows them to temporarily store data in a fast memory buffer before writing it to the disk drives. This improves the performance and efficiency of write operations, especially for random and small writes. However, if the battery on the controller goes bad, the controller may disable the write cache to prevent data loss in case of a power failure. This can degrade the disk drive performance significantly, as every write operation will have to wait for the disk drives to complete.

Reference:

https://www.dell.com/support/kbdoc/en- us/000131486/understanding-raid-controller-battery-learn-cycle https://www.techrepublic.com/article/understanding-raid-controller-write-cache/

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QUESTION: 111

A server technician notices a server is very low on disk space. Upon inspecting the disk utilization,

the technician discovers server logs are taxing up a large amount of space. There is no central log server.
Which of the following would help free up disk space?

Log rotation
Log shipping
Log alerting
Log analysis

Answer(s): B

Explanation:

Log rotation is a process that periodically renames, compresses, and deletes old log files to free up disk space and keep log files manageable. Log rotation can be configured using tools such as logrotate or cron on Linux systems, or using Windows Task Scheduler or PowerShell scripts on Windows systems. Log rotation can also help with log analysis and troubleshooting by making it easier to find relevant information in smaller and more recent log files.

Reference:

https://www.mezmo.com/learn-log-management/what-is-log-rotation-how-does-it-work https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/logman

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QUESTION: 112

A server has experienced several component failures. To minimize downtime, the server administrator wants to replace the components while the server is running.
Which of the following can MOST likely be swapped out while the server is still running? (Select TWO).

The power supply
The CPU
The hard drive
The GPU
The cache
The RAM

Answer(s): A,C

Explanation:

The power supply and the hard drive are two components that can most likely be swapped out while the server is still running, if they support hot swapping or hot plugging. Hot swapping or hot plugging means that the device can be added or removed without shutting down the system. The operating system automatically recognizes the changes that have been made. This feature is useful for minimizing downtime and improving availability. The CPU, the GPU, the cache, and the RAM are not hot swappable and require the system to be powered off before replacing them.

Reference:

https://www.geeksforgeeks.org/what-is-hot-swapping/ https://www.howtogeek.com/268249/what- is-hot-swapping-and-what-devices-support-it/

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QUESTION: 109

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QUESTION: 110

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QUESTION: 112

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