Which statement is true regarding classless routing protocols? 1. The command is used to establish a static route. 2. The default administrative distance is used. 3. The command is used to configure the default route. 4. The subnet mask for the source address is 255.255.255.0.

IP routing is a process that determines the shortest path for data to travel from one source to a destination. It's an essential part of computer networks and is crucial for the proper functioning of the internet and other IP-based networks.
Cryptography is the practice of hiding or coding information so that only the intended recipient can read it. It's also known as cryptology.