010-160 Practice Test 16 — 15 Questions

Question 1

To sort the lines of a text file numerically instead of alphabetically, which flag do you use?

Accepted Answer

sort -n. -n enables numeric sorting.

Answer

sort -f

Answer

sort -u

Answer

sort -r

Question 2

Which TWO of the following are considered hardware components?

Accepted Answer

CPU. CPU and RAM are physical hardware components of a computer system.

Answer

Kernel

Answer

Bash

Answer

systemd

Question 3

A server is running out of disk space. Which command allows you to view the space usage of directories in a human-readable format?

Accepted Answer

du -sh. The du -sh command summarizes disk usage for directories in human-readable units.

Answer

ls -s

Answer

fdisk

Answer

df -h

Question 4

A user complains they cannot read a file. The file has permissions 640 and is owned by root, but the user is in the group that owns the file. Why can't they read it?

Accepted Answer

The user lacks execute permission on a parent directory.. 640 means (rw-r-----). The group has read permissions (r), so if they are in the group, they should have access. If they still cannot read, it might be due to a parent directory restriction.

Answer

The umask is set to 077.

Answer

The user is not the owner.

Answer

The file is locked by root.

Question 5

You want to execute two commands sequentially, but only if the first command succeeds. Which operator is used?

Accepted Answer

&&. The '&&' operator ensures the second command runs only if the first returns an exit code of 0.

Answer

;

Answer

||

Answer

|

Question 6

Your organization wants to standardize its servers on a single distribution to streamline patch management. Which of the following is an advantage of using a major distribution like Ubuntu LTS or RHEL?

Accepted Answer

They provide predictable support lifecycles and stable software versions.. Major distributions provide consistent release cycles, long-term support (LTS), and well-documented security workflows.

Answer

They allow administrators to compile the kernel from source code during every boot.

Answer

They always include the latest experimental features from the Linux kernel.

Answer

They are guaranteed to be smaller in size compared to community distributions.

Question 7

You are trying to troubleshoot why a user cannot connect to your server via SSH. You want to see if the SSH daemon is listening on the appropriate port. Which command should you run?

Accepted Answer

ss -tulpn. The ss or netstat commands show active network sockets and the services listening on them.

Answer

host

Answer

ping

Answer

ip link

Question 8

Which file permission represents read, write, and execute for the owner, and read-only for group and others?

Accepted Answer

744. 7 (rwx) + 4 (r--) + 4 (r--) = 744.

Answer

755

Answer

644

Answer

700

Question 9

You want to find lines in 'file.txt' that do NOT contain the word 'success'. Which command works?

Accepted Answer

grep -v 'success' file.txt. The -v flag in grep inverts the match.

Answer

grep -n 'success' file.txt

Answer

grep -c 'success' file.txt

Answer

grep -i 'success' file.txt

Question 10

Which symbol represents the current user's home directory in the shell?

Accepted Answer

~. The tilde (~) is a shell shorthand for the home directory.

Answer

.

Answer

..

Answer

$

Question 11

Which THREE of the following are valid flags for the 'tar' command?

Accepted Answer

-z. -c, -x, and -z are standard tar flags.

Answer

-q

Answer

-p

Question 12

A junior admin is confused about the difference between software RAID and hardware RAID. Which of the following is a primary characteristic of software RAID?

Accepted Answer

It is managed by the OS and kernel.. Software RAID is managed by the Linux kernel via the mdadm utility, relying on the host CPU.

Answer

It is always faster than hardware RAID.

Answer

It is configured in the BIOS.

Answer

It requires a dedicated controller card.

Question 13

You are configuring a Linux server and need to determine which hard drive partition is currently mounted as the root filesystem. Which file should you inspect?

Accepted Answer

/etc/fstab. The /etc/fstab file contains information about filesystems and their mount points.

Answer

/var/log/dmesg

Answer

/etc/passwd

Answer

/proc/partitions

Question 14

You have added a new hard drive to your Linux server, but the system does not automatically recognize the device. What is the first step you should take to verify if the kernel detects the hardware?

Accepted Answer

Examine the output of dmesg.. The dmesg command displays the kernel ring buffer, which logs hardware detection events during boot or device insertion.

Answer

Reinstall the operating system.

Answer

Run the top command.

Answer

Edit the /etc/fstab file.

Question 15

An administrator wants to view the current system load and active processes. Which utility is the most appropriate for a real-time monitor?

Accepted Answer

top. The top command provides a dynamic, real-time view of running processes and system load.

Answer

df -T

Answer

ps aux

Answer

cat /proc/cpuinfo