Routing Concepts 1

IP addresses are

• independent of the Data Link layer technology
• tied directly to one Data Link layer technology
• never used on the Internet
• the same as MAC addresses

Routers do path determination:

• which is the best path to send a packet?
• which way is the nearest switch?
• am I connected to an end device?
• which way does electricity flow?

Another word for the cost of a route is its

• metric
• price
• expense
• measure

One metric that some routing protocols use is

• the bandwidth of links
• the type of media used
• how big each packet is
• where the router was purchased

A routing table has how many columns?

• 3
• 4
• 5
• 6

The Network column in a routing table represents

• An IP subnet known to the router
• A LAN switch known to the router
• An ISP provider
• A road network like the M1

The Mask column in a routing table represents

• The size of a network (number of IP addresses)
• The shape of a network
• The number of broadcast domains in a network
• The type of mask worn by the Phantom of the Opera

The Cost column in a routing table represents

• a measure of how expensive it is to send packets to a network
• how much the router costs
• how much money is being sent in each packet
• the running cost of the router

The Via column in a routing table represents

• on which output port a packet should leave the router
• on which port a packet should arrive
• the best way to discard a packet
• how vital the router is

A static route is

• one that never changes
• one that can always change
• one which does not exist
• one which is never used