Final Exam

Question 1

A pipe allows you to…

• …type multiple commands at one prompt.
• …send the output of a command to a file.
• …send the same input to multiple commands.
• …send the output of one command to another.

Answer 1

…send the output of one command to another.

Question 2

Channel 2 is:

• STDOUT
• STDERR
• STDIN
• STDALL

Answer 2

STDERR

Question 3

The grep command…

• …will display the line numbers in a file that contain a specified Regular Expression.
• …will display all the lines in a file containing the specified Regular Expression.
• …will display all the lines that begin with the specified Regular Expression.
• …is not case sensitive.

Answer 3

…will display all the lines in a file containing the specified Regular Expression.

Question 4

Which of the following commands can be used to scroll through a text file?(choose two)

• more
• cat
• some
• less

Answer 4

• more
• less

Question 5

Which command can be used to print line numbers?

• num
• nl
• ln
• sort

Answer 5

nl

Question 6

Which are appropriate editors for writing shell scripts?(choose two)

• nano
• vi
• LibreOffice Writer
• Firefox
• /bin/bash

Answer 6

• nano
• vi

Question 7

Which of the following are correct about for and while loops?(choose two)

• for loops require a variable over which to iterate
• for loops have a test each cycle to determine if it should run again
• while loops have a test each cycle to determine if it should run again
• for loops operate over a fixed list of items
• while loops operate over a fixed list of items

Answer 7

• while loops have a test each cycle to determine if it should run again
• for loops operate over a fixed list of items

Question 8

What is the correct way to assign the word “Hello” to a variable?

• $A=”Hello”
• echo “Hello” > A
• A=”Hello”
• A = “Hello”
• echo $A “Hello”

Answer 8

A=”Hello”

Question 9

What is the correct way to save the current directory to a variable?

• pwd $A
• pwd | $A
• A=`pwd`
• A=pwd
• A=cwd

Answer 9

A=`pwd`

Question 10

What is the meaning of $(( $i + 1)) ?

• This runs the command stored in variable i
• 1 will be added to the i variable
• If i is 0, the loop will stop
• This will return the value of the first argument to the script
• This will return the value of the next argument to the script

Answer 10

1 will be added to the i variable

Question 11

Which of the following are valid CPU types for Intel-based platforms?(choose two)

• 24-bit
• 32-bit
• 48-bit
• 64-bit

Answer 11

• 32-bit
• 64-bit

Question 12

Choose all of the following statements that are true in regard to virtual RAM: (choose three)

• Virtual RAM is stored in the CPU
• Virtual RAM is also called swap space
• Virtual RAM is stored on a hard drive
• Virtual RAM is used when available physical RAM is low.

Answer 12

• Virtual RAM is also called swap space
• Virtual RAM is stored on a hard drive
• Virtual RAM is used when available physical RAM is low.

Question 13

A division of a hard drive may be referred to as a _______ .

• label
• portion
• partition
• block

Answer 13

• partition

Question 14

The fdisk command is a tool used for working with the MBR partitioned disks. True or False?

Answer 14

True

Question 15

Which of the following commands will display CPU information?(choose two)

• arch
• showcpu
• lspic
• cpuinfo
• lscpu

Answer 15

• arch
• lscpu

Question 16

The Process ID (PID) of the init process is:

• varies
• 1
• 100
• 0

Answer 16

1

Question 17

What directory typically contains log files?

• /usr/log
• /proc/loc
• /var/log
• /log

Answer 17

/var/log

Question 18

The /var directory has files that change over time. True or False?

Answer 18

True

Question 19

Which of the following commands will allow you to view all processes on the system?(choose two)

• ps -A
• ps aux
• ps -eLf
• ps
• ps -ef

Answer 19

ps aux

Question 20

Which directory is the root of the filesystem?

• /
• /root
• /sys
• /home
• /var

Answer 20

/

Question 21

A service is…

• …a file that contains configuration information.
• …a feature provided by one computer to another.
• …another name for a computer’s hostname.
• …like an IP address.

Answer 21

…a feature provided by one computer to another.

Question 22

Only servers have hostnames. True or False?

Answer 22

False

Question 23

Which of the following are valid IPv4 addresses?(choose two)

• 192.301.25.25
• 192.105.10.10.2
• 192.105.10.10
• 10.33.55.77

Answer 23

• 192.105.10.10
• 10.33.55.77

Question 24

Which of the following commands will allow you to log into a remote machine?

• netstat
• dig
• route
• ssh

Answer 24

ssh

Question 25

Which files contain user account information?(choose two) * /etc/shadow * /etc/passwords * /etc/group * /etc/passwd

Answer 25

* /etc/shadow * /etc/passwd

Question 26

Which command will display the UID, GID and groups your current user belongs to? * id * Who * about * whoami

Answer 26

id

Question 27

Each user belongs to at least one group. True or False?

Answer 27

True

Question 28

Which command will display the users that are currently logged in to the system? * whoami * about * who * id

Answer 28

who

Question 29

Which command will display the groups that the root user belongs to? * groups -a * all -t * all * id root * group -r

Answer 29

id root

Question 30

UIDs 1-499 are usually reserved for what kind of users? * Are not used for user accounts, but for group accounts * System accounts, such as server processes * Log-in (human) users * Remote log-in accounts

Answer 30

System accounts, such as server processes

Question 31

Which of the following options for the useradd command allows root to specify the UID to be associated with the account? * -g * -M * -u * -G

Answer 31

-u

Question 32

Which command can be used to determine a user’s most recent log in? * shell * login * last * history

Answer 32

last

Question 33

Which of the following files contains encrypted user password information? * /etc/passwd * /etc/usr * /etc/group * /etc/shadow

Answer 33

/etc/shadow

Question 34

Which of the following options for the useradd command allows you to use a different primary group then the default? * -G * -g * -u * -U

Answer 34

-g

Question 35

Which of the following commands can be used to modify a user? * useradd * moduser * adduser * usermod

Answer 35

usermod

Question 36

Which of the following are methods for setting permissions using the chmod command?(choose two) * primary * symbolic * letter * octal

Answer 36

* symbolic * octal

Question 37

The chown command can be used to change the owner and group of a file. True or False?

Answer 37

True

Question 38

The chmod command can be used on a file by: * The file owner * A user that belongs to the files current group * The file owner and root * Only root

Answer 38

* The file owner and root

Question 39

The execute permission is never set on files by default. True or False?

Answer 39

True

Question 40

The sticky bit permission… * …changes the group ownership of existing files in a directory. * …prevents others from removing files they don’t own from a common directory. * …prevents others from overwriting files they don’t own in common directories. * …sets the group ownership of any new file created in a directory.

Answer 40

* …prevents others from removing files they don’t own from a common directory.

Question 41

The setuid permission… * …reports the output of a script to the owner. * …allows a command to be run as the file owner. * …prevents the owner of a file from being changed. * …allows files in a directory to be manipulated as by the directory owner.

Answer 41

* …allows a command to be run as the file owner.

Question 42

The setgid permission… (choose two) * …allows a command to be run as the group owner of the file. * …prevents the group owner of a file from being changed. * …allows files created in a directory to be owned by the group that owns the directory. * …can only be set on files.

Answer 42

* …allows a command to be run as the group owner of the file. * …allows files created in a directory to be owned by the group that owns the directory.

Question 43

Which of the following ls commands, when executed, will only show information about the directory itself? (choose two) * ls -h * ls -d * ls -ld * ld -a

Answer 43

* ls -d * ls -ld