What’s the greatest three minutes of your life?

In old-style classful subnetting, what class would be associated with the IP address

A) Class A

B) Class B

C) Class C

D) Class D

E) Schools out for summer!

The answer: B) Class B

The now-antiquated classful subnetting associated specific subnet masks to ranges of IP addresses. The Class B subnet consisted of ranges where the leading bits of the first octet were 10xx. Therefore, the digital representation of this octet consists of IP addresses where the first octet ranges between 128 through 191.

Want to know more? Watch “Protocols and Addresses.”

The fundamental languages used over our computer networks are a standard set of protocols that are used around the world. In this video, you’ll learn about protocols and the set of standards associated with TCP/IP. You’ll also learn the essentials of TCP/IP and how subnetting can be used to build today’s modern networks.