CH 10 - 18 Second Half

Question 1

Which of the following are traits of a multiuser OS? (Choose Three)

Resources are shared between users.
Users can protect their information from other users.
Each user can only log in once per day.
An administrative user gets a dedicated CPU
Many users can log in simultaneously with a unique account.

Answer 1

Resources are shared between users.
Users can protect their information from other users.
Many users can log in simultaneously with a unique account.

Question 2

A pipe allows you to?

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

Answer 2

…send the output of one command to another.

Question 3

Channel 2 is?

STDALL
STDOUT
STDERR
STDIN

Answer 3

STDERR

Question 4

The grep command?

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

Answer 4

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

Question 5

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

cat
less
some
more

Answer 5

less

more

Question 6

Which command can be used to print line numbers?

ln
nl
sort
num

Answer 6

nl

Question 7

Which are appropriate editors for writing shell scripts? (Choose Two)

LibreOffice Writer
vi
Firefox
nano
/bin/bash

Answer 7

vi

nano

Question 8

Which of the following are correct about for and while loops? (Choose Two)

while loops operate over a fixed list of items
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 require a variable over which to iterate
for loops operate over a fixed list of items

Answer 8

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

Question 9

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

$A="Hello"
A="Hello"
echo "Hello" >A
A="Hello"
echo $A "Hello"

Answer 9

A=”Hello”

Question 10

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

pwd $A
A=cwd
A='pwd'
A=pwd
pwd | $A

Answer 10

A=’pwd’

Question 11

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

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

Answer 11

1 will be added to the i variable

Question 12

Which of the following are Valid CPU Types for Intel-Based Platforms? (Choose Two)

64-bit
24-bit
32-bit
48-bit

Answer 12

64-bit

32-bit

Question 13

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 13

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 14

A division of a hard drive may be referred to as a _____?

label
block
portion
partition

Answer 14

partition

Question 15

The fdisk command is a tool used for working with the MBR partitioned disks?

True
False

Answer 15

True

Question 16

Which of the following commands will display CPU information? (Choose Two)

cpuinfo
lscpu
showcpu
lspic
arch

Answer 16

lscpu

arch

Question 17

The process ID (PID) of the init process is?

100
0
1
Varies

Answer 17

1

Question 18

What directory typically contains log files?

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

Answer 18

/var/log

Question 19

The /var directory has files that change over time?

True
False

Answer 19

True

Question 20

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

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

Answer 20

ps -ef

ps aux

Question 21

Which directory is the root of the filesystem?

/sys
/
/var
/root
/home

Answer 21

/

Question 22

A Service is?

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

Answer 22

…a feature provided by one computer to another

Question 23

Only servers have hostnames?

True
False

Answer 23

False

Question 24

Which of the following are Valid IPv4 addresses? (Choose Two)

10. 33.55.77
11. 105.10.10.2
12. 105.10.10
13. 301.25.25

Answer 24

10. 33.55.77

192. 105.10.10

Question 25

Which of the following commands will allow you to log into a remote machine? route ssh dig netstat

Answer 25

ssh

Question 26

What files contain user account information? (Choose Two) /etc/passwd /etc/passwords /etc/shadow /etc/group

Answer 26

/etc/passwd | /etc/shadow

Question 27

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

Answer 27

id

Question 28

Each user belongs to atleast one group? True False

Answer 28

True

Question 29

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

Answer 29

who

Question 30

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

Answer 30

id root

Question 31

UIDs 1-499 are usually reserved for what kind of users? Are not used for user accounts, but for group accounts. Lo-In (Human) Users Remote log-in Accounts System Accounts, such as server processes

Answer 31

System Accounts, such as server processes.

Question 32

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

Answer 32

-u

Question 33

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

Answer 33

last

Question 34

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

Answer 34

/etc/shadow

Question 35

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

Answer 35

-g

Question 36

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

Answer 36

usermod

Question 37

Which of the following are methods for setting permissions using the chmod command? (Choose Two) letter primary symbolic octal

Answer 37

symbolic | octal

Question 38

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

Answer 38

True

Question 39

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

Answer 39

The file owner and root.

Question 40

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

Answer 40

False

Question 41

The "Sticky Bit" permission? ...changes the group ownership of existing files in the directory ...prevents others from removing files they don't own from a common directory. ...sets group ownership of any new file created in the directory ...prevents others from overwriting files they don't own in common directories

Answer 41

...prevents others from removing files they don't own from a common directory.

Question 42

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

Answer 42

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

Question 43

The "setgid" permission? (Choose Two) ...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. ...allows a command to be run as the group owner of the file. ...can only be set on files.

Answer 43

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

Question 44

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

Answer 44

ls -d | ls -ld