010-160 Practice Test 3 — 25 Questions

Question 1

Which command removes a group named 'tempgroup' from the system?

Accepted Answer

groupdel tempgroup. The 'groupdel' command is the standard utility for removing groups from the system.

Answer

usermod -r tempgroup

Answer

grouprm tempgroup

Answer

removegroup tempgroup

Question 2

Which THREE commands can be used to check user information or current session identity?

Accepted Answer

whoami. id shows identity, whoami shows current user, and groups shows group memberships.

Answer

userdel

Answer

chage

Question 3

Which TWO of the following locations or methods are commonly used to define where a user's home directory is located?

Accepted Answer

The useradd -d flag. The home directory is set in /etc/passwd or during the useradd command via the -d flag.

Answer

The /etc/profile file

Answer

The /etc/group file

Answer

The /etc/shadow file

Question 4

You need to create a compressed archive of the '/home/user/docs' directory named 'docs.tar.gz'. Which flag ensures gzip compression is applied?

Accepted Answer

tar -czf docs.tar.gz /home/user/docs. The -z flag in tar invokes gzip compression for the archive.

Answer

tar -jf docs.tar.gz /home/user/docs

Answer

tar -xzf docs.tar.gz /home/user/docs

Answer

tar -cf docs.tar.gz /home/user/docs

Question 5

Which TWO of the following are examples of common Linux filesystems?

Accepted Answer

ext4. ext4 and xfs are both widely used journaling filesystems in Linux.

Answer

FAT32

Answer

HFS

Answer

NTFS

Question 6

What is the result of running 'chmod 000 secret.txt'?

Accepted Answer

No user can access it (except root).. 000 removes all permissions for owner, group, and others. The file is inaccessible to everyone except root.

Answer

The file becomes read-only for root.

Answer

Only the owner can access it.

Answer

The file is deleted.

Question 7

In the context of the open source community, what is the significance of the term 'fork'?

Accepted Answer

A project that diverges from the original source to move in a new direction.. A fork occurs when developers take a copy of source code and start a new, independent project.

Answer

A type of software license that forbids distribution.

Answer

A way to kill a process in the Linux terminal.

Answer

A method for merging two disparate codebases into one.

Question 8

Which of these is a common advantage of using a Linux-based operating system in a professional development environment?

Accepted Answer

It has native compatibility with standard development tools like GCC, Git, and Docker.. Linux provides native support for open-standard tools, compilers, and containers, which are standard in modern development.

Answer

It prevents developers from making any syntax errors.

Answer

It automatically deploys code to production servers without testing.

Answer

It is the only OS that allows writing Python code.

Question 9

Which THREE of the following represent ways to gain practical experience with Linux?

Accepted Answer

Installing and configuring Linux in a virtual machine. Setting up a home lab, contributing to open source, and using virtual machines are excellent ways to learn.

Answer

Buying a pre-configured, locked-down appliance

Answer

Only reading documentation without using the terminal

Question 10

Which THREE of the following commands are used for viewing file metadata or status?

Accepted Answer

ls -l. ls, stat, and file all provide information about files.

Answer

cat

Answer

cd

Question 11

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 12

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 13

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 14

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 15

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 16

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 17

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 18

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 19

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 20

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