MCQs on Networking and Shell Scripting | Shell

Networking commands in shell scripting are essential for system administrators and developers. This set of 30 MCQs covers using tools like curl, wget, automating SSH commands, and network diagnostics.

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Networking and Shell Scripting – MCQs

1. Working with curl and wget (10 Questions)

1. What is the main function of the curl command in shell scripting?
   a) Uploading files to a server
   b) Sending HTTP requests to a server
   c) Transferring files over FTP
   d) Testing network connectivity
2. Which of the following is a valid option for using curl to download a file?
   a) curl -o filename.txt
   b) curl --output filename.txt
   c) curl -d filename.txt
   d) Both a and b
3. What is the purpose of the wget command?
   a) To make HTTP requests
   b) To transfer files from a remote server
   c) To test the network speed
   d) To check DNS resolution
4. How can you use curl to send a GET request to a server?
   a) curl -X GET http://example.com
   b) curl --get http://example.com
   c) curl http://example.com
   d) curl -g http://example.com
5. Which command is used to download a file from a remote server using wget?
   a) wget http://example.com/file
   b) wget -d http://example.com/file
   c) wget download http://example.com/file
   d) wget --get http://example.com/file
6. Which option for curl is used to follow redirects automatically?
   a) -L
   b) -R
   c) -F
   d) -D
7. How can you download a file and save it with a different name using wget?
   a) wget -o newfile.txt http://example.com/file
   b) wget -O newfile.txt http://example.com/file
   c) wget -rename newfile.txt http://example.com/file
   d) wget --save newfile.txt http://example.com/file
8. Which command does curl use to interact with a web server over HTTPS?
   a) curl -X HTTPS
   b) curl -u https://
   c) curl --ssl https://
   d) curl --insecure https://
9. What does the wget -r command do?
   a) Downloads files recursively from a server
   b) Resolves domain names
   c) Resumes downloading files
   d) Downloads all linked files in a webpage
10. Which of the following is the correct curl command for testing a URL?
    a) curl -I http://example.com
    b) curl -v http://example.com
    c) curl http://example.com
    d) All of the above

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2. Automating SSH Commands (10 Questions)

11. What is the purpose of the ssh command in shell scripting?
    a) To copy files between servers
    b) To create SSH keys
    c) To connect to a remote server over a secure connection
    d) To test network connectivity
12. How can you automate SSH login without entering a password?
    a) Use an SSH agent
    b) Set up SSH key-based authentication
    c) Use a password manager
    d) Set password: false in the SSH config
13. Which command allows you to copy files between local and remote servers securely?
    a) scp
    b) ftp
    c) ssh
    d) rsync
14. How can you use ssh to run a command on a remote server?
    a) ssh user@host "command"
    b) ssh -run user@host
    c) ssh user@host command
    d) ssh -exec command user@host
15. What does the scp command stand for?
    a) Secure Command Protocol
    b) Secure Copy Protocol
    c) System Command Protocol
    d) Secure Configuration Protocol
16. Which of the following is the correct scp command for copying a file to a remote server?
    a) scp file.txt user@host:/path
    b) scp file.txt /path user@host
    c) scp file.txt -user@host
    d) scp -r file.txt user@host:/path
17. How can you copy an entire directory from a local machine to a remote server using scp?
    a) scp -r directory user@host:/path
    b) scp directory user@host:/path
    c) scp -d directory user@host:/path
    d) scp -x directory user@host:/path
18. Which command is used to generate SSH keys for passwordless authentication?
    a) ssh-keygen
    b) ssh-auth
    c) ssh-keys
    d) ssh-create-key
19. How can you disable the use of passwords for SSH login?
    a) Set PasswordAuthentication no in sshd_config
    b) Set DisablePassword yes in ssh_config
    c) Run disable-ssh-passwords
    d) Use the -no-password option with ssh
20. How would you run a script remotely using ssh?
    a) ssh user@host "bash script.sh"
    b) ssh user@host script.sh
    c) ssh user@host -script script.sh
    d) ssh user@host -f script.sh

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3. Basic Network Diagnostics (10 Questions)

21. Which command is used to test the reachability of a host on a network?
    a) ping
    b) trace
    c) netstat
    d) curl
22. What does the ping command do in shell scripting?
    a) Tests the connection speed
    b) Resolves domain names to IP addresses
    c) Sends ICMP Echo requests to a host
    d) Tracks packet loss
23. Which of the following options is used with ping to specify the number of packets to send?
    a) -n
    b) -c
    c) -p
    d) -t
24. What does the netstat command display?
    a) Network packet statistics
    b) Active network connections
    c) Hostname resolution
    d) Available bandwidth
25. Which netstat option displays the network routing table?
    a) -r
    b) -t
    c) -n
    d) -a
26. Which command can be used to display the route packets take to a network destination?
    a) traceroute
    b) ping
    c) tracepath
    d) route
27. What does the traceroute command do?
    a) Displays active network connections
    b) Resolves IP addresses to hostnames
    c) Shows the route packets take to a destination
    d) Tracks data packets in transit
28. What is the default number of hops traceroute will display when used without options?
    a) 15
    b) 30
    c) 10
    d) 5
29. How do you display the current network interfaces using netstat?
    a) netstat -i
    b) netstat -p
    c) netstat -t
    d) netstat -r
30. Which of the following ping options prevents the command from resolving hostnames?
    a) -n
    b) -t
    c) -r
    d) -c

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Answers

Qno	Answer
1	b) Sending HTTP requests to a server
2	d) Both a and b
3	b) To transfer files from a remote server
4	c) curl http://example.com
5	a) wget http://example.com/file
6	a) -L
7	b) wget -O newfile.txt http://example.com/file
8	c) curl –ssl https://
9	a) Downloads files recursively from a server
10	d) All of the above
11	c) To connect to a remote server over a secure connection
12	b) Set up SSH key-based authentication
13	a) scp
14	a) ssh user@host “command”
15	b) Secure Copy Protocol
16	a) scp file.txt user@host:/path
17	a) scp -r directory user@host:/path
18	a) ssh-keygen
19	a) Set PasswordAuthentication no in sshd_config
20	a) ssh user@host “bash script.sh”
21	a) ping
22	c) Sends ICMP Echo requests to a host
23	b) -c
24	b) Active network connections
25	a) -r
26	a) traceroute
27	c) Shows the route packets take to a destination
28	b) 30
29	a) netstat -i
30	a) -n