A.during high traffic periods
B.after broken links are re-established
C.when upper-layer protocols require high reliability
D.in an improperly implemented redundant topology
E.when a dual ring topology is in use

A.TFTP server, Flash, NVRAM
B.ROM, NVRAM, TFTP server
C.NVRAM, TFTP server, ROM
D.Flash, TFTP server, ROM
E.Flash, NVRAM, ROM

A.a primary route,stored in the routing table
B.a backup route,stored in the routing table
C.a backup route,stored in the topology table
D.a primary route,stored in the topology table

A.ATM
B.IDS
C.IOS
D.IOX
E.IPS
F.SDM

A.Filtering can occur based on Layer 3 information.
B.Broadcasts are eliminated.
C.Routers generally cost less than switches.
D.Broadcasts are not forwarded across the router.
E.Adding a router to the network decreases latency.