This chapter is from the book Show
Review and Test YourselfThe following sections provide you with the opportunity to review what you learned in this chapter and to test yourself. The Facts
Key Terms
Exam Prep Questions
Answers to Exam Prep Questions
Does a router makes forwarding decisions based on layer 2 addresses?Routers. Whereas switches and bridges make forwarding decisions base on Layer 2 MAC addresses, a router makes forwarding decisions based on Layer 3 addresses. Unlike a switch, a router is more concerned with routing network traffic along the most efficient path to the destination.
How does a router makes forwarding decisions?Routers can access IP packets carried to them in frames, so they can make forwarding decisions based on the IP destination address they find. The forwarding of packets by routers is referred to as packet switching.
Which address does a router use to make it's forwarding decisions?The router uses the information in the IP header to decide whether and where to forward each received packet, and which network interface to use to send the packet. Most packets are forwarded based on the packet's IP destination address, along with routing information held within the router in a routing table.
What address type does a Layer 2 switch use to make forwarding decisions?Layer 2 switching (or Data Link layer switching) is the process of using devices' MAC addresses to decide where to forward frames. Switches and bridges are used for Layer 2 switching. They break up one large collision domain into multiple smaller ones.
|