MODULE 1 Flashcards
A system administrator issues the apt-get upgrade command on a Linux operating system. What is the purpose of this command?
Every application installed will update itself to the latest version.
Operating system updates are downloaded and will be installed.
The remote repository of applications and dependencies will be updated to the latest version.
A specific application named upgrade will be installed.
Every application installed will update itself to the latest version.
A Linux system administrator is searching the passwd file for any username that starts with a digit. Which grep command should the administrator use?
grep ‘(0-9}’ /etc/passwd
grep ‘[0-9]’ /etc/passwd
grep ‘_[0-9]’ /etc/passwd
grep ‘^[0-9]’ /etc/passwd
grep ‘^[0-9]’ /etc/passwd
What is the output when the following code is entered into a Python program interpreter?
[1,2,4,5] + [3,6]
[1,2,3,4,5,6]
[12]+[9]
[21]
[1,2,4,5,3,6]
[1,2,4,5,3,6]
What is displayed after the following code is entered into a Python interpreter?
addition = 22 +10
print(addition)
nothing ( because the print command is wrong)
[22]+[10]
(syntaxerror)-…as there should not be a space between the numerical values
32
32
A Linus administrator is attempting to use a terminal to configure the network interface card on a computer. The administrator receives a message that the administrator does not have necessary permissions to perform the configuration. What should be done prior to the configuration command?
identify a different network interface
use a different user account
use the sudo command
change the chmod permissions on the network configuration file
use the sudo command
A network engineer needs to review the status of all network interfaces of a server running a Linux operating system. The engineer enters the command ifconfig -a. What is the result of this command?
All active interfaces will display information
The ARP table of the computer will be displayed.
Both active and inactive interfaces will display information.
The host routing table will be displayed.
Both active and inactive interfaces will display information.
A system administrator attempts to determine what is causing a computer to perform slower than normal. The administrator issues the ps command. What is displayed by this command?
current RAM usage
current NIC status
active processes using CPU time
current HDD usage
active processes using CPU time
A user issues the Linus command ls -l myfile.sh to check the permission of the file myfile.sh
devasc@labvm:~/Documents$ ls -l myfile.sh
-rwxr-xr– 1 self test 15 Mar 30 21:24 myfile.sh
Which two statements describe the permissions assigned to the file? (Choose two.)
Any user in the self group can read, modify, and execute the file.
The user with the user ID of self can modify the file.
The user with the user ID of devasc can modify the file.
All users can execute the file.
Any user in the test group can execute the file.
The user with the user ID of self can modify the file.
Any user in the test group can execute the file.
Which Python command creates a conditional control structure?
def
delay
from
if
if
A user enters the commands as shown. What is the result after the mv command is entered?
devasc@labvm:~/Documents$ pwd
/home/devasc/Documents
devasc@labvm:~/Documents$ mv myfile.sh ../Desktop/myfile2.sh
The file myfile.sh is copied to the /home/devasc/Desktop directory and renamed as myfile2.sh.
The file myfile.sh is copied to the /home/devasc/Desktop directory and replaces the file myfile2.sh.
The file myfile.sh is copied and renamed to myfile2.sh in the current directory.
The file myfile.sh is moved to the /home/devasc/Desktop directory and renamed as myfile2.sh.
The file myfile.sh is moved to the /home/devasc/Desktop directory and renamed as myfile2.sh.
A student new to Python is working in the interactive interpreter mode. The student issues the commands:
»> ipAddress = {“R1”:”10.1.1.1”,”R2”:”10.2.2.1”,”R3”:”10.3.3.1”}
Which data type is used to represent the variable ipAddress?
list
array
tuple
dictionary
dictionary
A student new to Python is working in the interactive interpreter mode. The student issues the command:
»> ipAddress = {“R1”:”10.1.1.1”,”R2”:”10.2.2.1”,”R3”:”10.3.3.1”}
Which Python expression can be used to retrieve the IP address of R2?
ipAddress{‘R2’}
ipAddress[‘R2’]
ipAddress[R2]
ipAddress{“R2”}
ipAddress[‘R2’]
A user issues a series of Linux commands as shown.
(omitted)$ pwd
/home/devasc/labs/ansible/backups
(omitted)$ cd ../..
Which directory is the current directory after the cd command is entered?
/
/home
/home/devasc/
/home/devasc/labs
/home/devasc/labs/ansible
/home/devasc/labs
A student new to Python is working in the interactive interpreter mode. The student issues the commands:
> > > devicenames=[“RT1”, “RT2”, “SW1”, “SW2”]
hostnames=devicenames + [“RT3”, “SW3”]
del hostnames[3]
hostnames
What is the result?
[‘RT1’, ‘RT2’, ‘RT3’, ‘SW2, ‘SW3’]
[‘RT1’, ‘RT2’, ‘SW2’, ‘RT3’, ‘SW3’]
[‘RT1’, ‘RT2’, ‘SW1’, ‘RT3’, ‘SW3’]
[‘RT1’, ‘RT2’, ‘SW1’, ‘SW2’, ‘SW3’]
[‘RT1’, ‘RT2’, ‘SW1’, ‘RT3’, ‘SW3’]
A student is learning Python in the interactive interpreter mode. The student issues the commands:
> > > y=2
y * 3
6
‘Test’ * y
What is the result?
‘Test2
‘Test6’
TypeError: A string type cannot be multiplied by an integer.
‘TestTest’
‘TestTestTestTestTestTest’
‘TestTest’
A student is learning Python and is reviewing a Python script as follows:
aclNum = int(input(“What is the IPv4 ACL number? “))
if aclNum >= 1 and aclNum <= 99:
print(“This is a standard IPv4 ACL.”)
elif aclNum >=100 and aclNum <= 199:
print(“This is an extended IPv4 ACL.”)
else:
print(“This is not a standard or extended IPv4 ACL.”)
Under which condition will the elif statement be evaluated?
when the input is a float number
when the first print statement fails
when the input is a string
when the if statement is false
when the if statement is false
A user issues a Linux command and the result is shown:
total 40
drwxr-xr-x 2 devasc devasc 4096 Mar 30 21:25 Desktop
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Documents
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Downloads
drwxr-xr-x 5 devasc devasc 4096 Mar 30 21:21 labs
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Music
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Pictures
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Public
drwxr-xr-x 5 devasc devasc 4096 Mar 30 21:24 snap
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Templates
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Videos
devasc@labvm:~$
Which Linux command is used to display the contents of the current directory as shown?
ls -a
ls -l
ls
ls -lr
ls -l
A network engineer needs to review the status of all network interfaces of a server running a Linux operating system. The engineer enters the command ifconfig -a . What is the result of this command?
The host routing table will be displayed.
All active interfaces will display information.
Both active and inactive interfaces will display information.
The ARP table of the computer will be displayed.
Both active and inactive interfaces will display information.
What Linux command is used to display the contents of the current directory?
pwd
cat
ln
ls
ls
What command is used to rename a file in a Linux system?
mv
dd
cp
rm
mv
A user issues a Linux command and the result is shown.
total 40
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Videos
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Templates
drwxr-xr-x 5 devasc devasc 4096 Mar 30 21:24 snap
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Public
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Pictures
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Music
drwxr-xr-x 5 devasc devasc 4096 Mar 30 21:21 labs
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Downloads
drwxr-xr-x 2 devasc devasc 4096 Apr 15 19:09 Documents
drwxr-xr-x 2 devasc devasc 4096 Mar 30 21:25 Desktop
devasc@labvm:~$
Which Linux command is used to display the contents of the current directory as shown?
ls -l
ls -a
ls -lr
ln
ls -lr
A system administrator of a Linux server is searching the passwd file for the username taylor that appears at the beginning of the line. Which grep command should the administrator use?
grep taylor /etc/passwd
grep ‘.taylor’ /etc/passwd
grep ‘^taylor’ /etc/passwd
grep ‘[taylor]’ /etc/passwd
grep ‘^taylor’ /etc/passwd
A user issues the apt-get upgrade command to update system files in a Ubuntu Linux system and receives an error message of “permission denied.” What should the user do to complete the task?
Issue the allow apt-get upgrade command.
Issue the sude apt-get install command.
Issue the apt-get install -allow command.
Issue the sudo apt-get upgrade command.
Issue the sudo apt-get upgrade command.
A student is learning Python using the interactive interpreter mode. The student issues the commands:
> > > routers=[]
switches=[]
devices=["RT1", "RT2", "RT3", SW1", "SW2", "SW3"]
devices=devices + ["RT4", "SW4"]
for i in devices:
if "R" in i:
routers.append(i)
else: switches.append(i)
switches
What is the result?
[‘SW4’, ‘SW3’, ‘SW2’, ‘SW1’]
[‘SW1’, ‘SW2’, ‘SW3’]
[‘SW4’, ‘SW1’, ‘SW2’, ‘SW3’]
[‘SW4’]
[‘SW1’, ‘SW2’, ‘SW3’, ‘SW4’]
[‘SW1’, ‘SW2’, ‘SW3’, ‘SW4’]
A student is learning Python in the interactive interpreter mode. The student issues the commands:
> > > devicenames=["RT1", "RT2", "SW1", "SW2"]
devicenames[-1]
What is the result?
[‘RT2’, ‘SW1’, ‘SW2’]
SW1
RT1
SW2
an error message
SW2
A developer needs to check the version of the running Python package. Which command should the developer use?
python3 -i
python3 -q
python3 –v
python3 -V
python3 -V
A student is learning Python in the interactive interpreter mode. The student issues the command:
> > > type(True)
What is the data type reported by Python?
Boolean
integer
string
float
Boolean
Which Python programming function is used to display output?
if
for
while
