Linux Basics Quiz: Test Your Linux Command Knowledge

Which command is used to change the file owner and group in Linux?

What is the Linux command for removing files and directories?

Which command is used to display network interfaces and IP addresses?

Which protocol is commonly used for secure remote administration?

What port number is associated with DNS service?

Which networking protocol is faster but lacks guarantees for delivery or order?

'ping' command in networking is primarily used for:

'netstat' command in networking is used to:

Which Linux command is used to change the file mode bits?

In networking, which command is used to trace the route packets take to a network host?

Which protocol is commonly used for email sending?

What port number is associated with FTP for file transfers?

Which Linux command is used to copy files and directories?

Which networking protocol is known for ensuring messages are delivered in order and error checking?

In Linux, which command is used to display the network connections, routing tables, and interface statistics?

Which networking protocol is faster but lacks guarantees for delivery or order, suitable for streaming where speed is preferred over reliability?

Basic Linux Commands

ls command lists directory contents.
cd command changes directory.
pwd command prints the working directory.
cp command copies files and directories.
mv command moves or renames files and directories.
rm command removes files and directories.
chmod command changes file mode bits.
chown command changes file owner and group.
grep command searches text using patterns.

Networking Commands

ifconfig/ip addr command displays network interfaces and IP addresses.
ping command checks connectivity to a host.
netstat command displays network connections, routing tables, and interface statistics.
ss command is a utility to investigate sockets.
traceroute command traces the route packets take to a network host.
nslookup/dig command queries Internet name servers for DNS information.

Network Protocols and Ports

HTTP (port 80) and HTTPS (port 443) are used for web traffic.
FTP (port 21) is used for file transfers.
SSH (port 22) is used for secure remote administration.
SMTP (port 25) is used for email sending.
DNS (port 53) is used for domain name resolution.
DHCP (ports 67/68) is used for network device configuration.
RDP (port 3389) is used for Windows remote desktop access.

TCP and UDP

TCP is a connection-oriented protocol, ensuring messages are delivered in order and checks for errors, similar to making a phone call.
UDP is a connectionless protocol, sent without establishing a connection, making it faster but without guarantees for delivery or order, suitable for streaming where speed is preferred over reliability.

Test your knowledge on fundamental Linux commands such as ls, cd, cp, and more, as well as essential networking commands like ifconfig, ping, and netstat. This quiz will help you practice and reinforce your skills in navigating the terminal and managing network configurations.