What part of a MAC address serves as the extension identifier, or device ID?

Which of the following IP addresses would be a loopback IP address?

What is NOT one of the three characteristics of TCP in its role as a reliable delivery protocol?

The fundamental difference between a switch and a router is that a switch belongs only to its local network and a router belongs to two or more local networks.

Which statement regarding the Border Gateway Protocol (BGP) is accurate?

What multiplexing technology lowers cost by spacing frequency bands wider apart to allow for cheaper transceiver equipment?

Which routing protocol started as a Cisco proprietary protocol and combines some of the features of a link-state protocol with that of distance-vector protocols?

In the TCP/IP model, what layer combines the responsibilities of the Application, Presentation, and Session layers from the OSI model?

What statement regarding the differences between the Windows tracert utility and the Linux/UNIX/macOS traceroute utility is accurate?

What is the most popular web server application?