010-160 Practice Test 3 — 30 Questions

Question 1

Which command is used to clear the terminal screen?

Accepted Answer

clear. The clear command wipes the current terminal output.

Answer

clean

Answer

wipe

Answer

reset

Question 2

Which TWO of the following are valid ways to create a directory?

Accepted Answer

install -d. mkdir is the standard command, and install with -d is a less common but valid method.

Answer

touch

Answer

ln

Answer

cp -d

Question 3

Which THREE of these are valid types of permissions in Linux file systems?

Accepted Answer

Read. Read, Write, and Execute are the three primary file permissions.

Answer

Delete

Answer

Append

Question 4

Which command lists all files in a directory including hidden ones?

Accepted Answer

ls -a. The ls -a (all) option displays all files, including those beginning with a dot.

Answer

ls -h

Answer

ls -l

Answer

dir -hidden

Question 5

Which directory contains the user accounts' password hashes and aging data on most modern Linux systems?

Accepted Answer

/etc/shadow. The /etc/shadow file stores the password hashes and aging information securely.

Answer

/etc/passwd

Answer

/var/spool/mail

Answer

/etc/group

Question 6

You are managing a directory shared by a project team. You want all files created in this directory to automatically belong to the 'developers' group, regardless of the user's primary group. Which command achieves this?

Accepted Answer

chmod g+s /data. Setting the setgid bit (chmod g+s) on a directory ensures that new files created within inherit the group ownership of the directory.

Answer

usermod -aG developers

Answer

chgrp developers /data

Answer

chmod 1777 /data

Question 7

You notice a file has permissions listed as '-rwsr-xr-x'. What does the 's' in the owner's position indicate?

Accepted Answer

The file is a setuid binary.. The 's' in the owner's field indicates the setuid bit is set, meaning the file runs with the privileges of the file owner rather than the user running it.

Answer

The file is a setgid binary.

Answer

The file is immutable.

Answer

The file is a sticky directory.

Question 8

Which of the following describes the core philosophy of 'Open Source' as defined by the Open Source Initiative?

Accepted Answer

The source code must be available for modification and redistribution.. The core of open source is the freedom to access, modify, and distribute the source code for any purpose.

Answer

The software must be provided for free without any charge.

Answer

The code must be written in C or C++.

Answer

The software must only be used for non-profit purposes.

Question 9

Why do many enterprise Linux distributions choose to delay the inclusion of the absolute latest kernel version?

Accepted Answer

Because they prioritize stability and extensive testing to ensure production uptime.. Enterprise distributions prioritize stability and exhaustive testing over having the absolute newest features.

Answer

Because the latest kernel is always incompatible with proprietary software.

Answer

Because they are legally required to wait 12 months.

Answer

Because they lack the technical staff to compile new kernels.

Question 10

Which command-line tool is used to display the groups a specific user belongs to?

Accepted Answer

groups. The 'groups' command lists all group memberships for a specified username.

Answer

id

Answer

listgroups

Answer

whoami

Question 11

A system administrator wants to check the partition table of a specific disk. Which tool is used for this?

Accepted Answer

fdisk. fdisk is a common command-line utility used to view and manipulate partition tables.

Answer

fsck

Answer

df

Answer

mkfs

Question 12

Which TWO of the following commands can be used to display the contents of a text file?

Accepted Answer

cat. cat and less are both common tools for reading file contents.

Answer

cd

Answer

mkdir

Answer

mv

Question 13

You need to create a new group named 'audit'. Which command should you execute?

Accepted Answer

groupadd audit. The 'groupadd' command is the standard utility for creating a new group in Linux.

Answer

newgroup audit

Answer

useradd -g audit

Answer

addgroup audit

Question 14

Which THREE of the following are special permission bits in Linux?

Accepted Answer

Sticky bit. Setuid, setgid, and the sticky bit are the three special permission bits.

Answer

Immutable bit

Answer

Append-only bit

Question 15

What is the primary role of the 'Free Software Foundation' (FSF)?

Accepted Answer

Advocating for computer user freedom and maintaining the GNU project.. The FSF promotes software freedom and maintains the GNU project, including licenses like the GPL.

Answer

Manufacturing servers and hardware for Linux.

Answer

Providing commercial support for Linux users globally.

Answer

Developing Linux distribution patches for security.

Question 16

Which TWO of the following are common benefits of using open source software in an enterprise environment?

Accepted Answer

Reduced total cost of ownership (TCO) compared to proprietary alternatives. Open source provides cost-effectiveness through lower licensing and the ability to avoid vendor lock-in.

Answer

The inability to modify software

Answer

Mandatory inclusion of proprietary drivers

Answer

Guaranteed 100% bug-free performance

Question 17

You are setting up a local network and need to verify the path traffic takes to reach a remote host. Which command should you use?

Accepted Answer

traceroute. The traceroute command displays the path and latency of each hop to a destination.

Answer

nmap

Answer

ping

Answer

dig

Question 18

An open source developer wants to choose a license that allows their code to be included in proprietary software without requiring the proprietary software to open its source. Which license should they choose?

Accepted Answer

MIT. Permissive licenses like the MIT or BSD license allow for linking with proprietary code without 'copyleft' obligations.

Answer

AGPL

Answer

GPLv3

Answer

Creative Commons Attribution-ShareAlike

Question 19

A user's account has been compromised. Which command is the most effective way to lock the user account immediately while preserving their files?

Accepted Answer

usermod -L jdoe. The usermod -L command locks the password, preventing the user from logging in, while keeping the user's home directory and files intact.

Answer

userdel jdoe

Answer

killall -u jdoe

Answer

chsh -s /bin/false jdoe

Question 20

Your company is considering moving from proprietary software to open source solutions. Which aspect of the GPL license is most restrictive regarding the distribution of modified code?

Accepted Answer

You must release the source code of any derivative works if you distribute the binaries.. The GPL 'copyleft' clause requires that modified versions of the software must also be distributed under the same license terms.

Answer

You must contribute all modifications back to the original project maintainer.

Answer

You are not allowed to modify the source code for internal business use.

Answer

You are forbidden from selling any software that uses GPL code.