1. What does ARP (Address Resolution Protocol) do in networking?
a) Authenticates remote devices
b) Resolves IP addresses to MAC addresses
c) Resolves IP addresses to DNS hostnames
d) Manages DNS records
2. In Ubuntu, what command is used to display information about the network interfaces on a system?
a) ifconfig
b) netstat
c) ipconfig
d) ping
3. What is the purpose of a VPN (Virtual Private Network) in the context of network security?
a) Speeds up the Internet connection
b) Encrypts data for secure comms
c) Blocks malicious websites
d) Manages user permissions