Module 1-2

1. 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

2. 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

3. 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]

4. 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

5. A Linux 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

6. 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 resuit 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.

7. 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

8. A user issues the Linux 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.

9. Which Python command creates a conditional control structure?

• def
• delay
• from
• if

10. 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.