Networking Question of the Week

Every other week we post TCP/IP, subnetting, and other networking certification questions to help you prep for the exams.

In a router table, you see an entry for  What is the mask (in dotted decimal notation)?



The correct answer is 2.

The mask in binary is: 11111111111111111111000000000000 (we know there are 20 ones from the /20). In dotted decimal notation that converts to

Related Courses
TCP/IP Networking
Understanding Network Fundamentals

In this article

Join the Conversation