多选题What kind of information does a router running a link-state routing protocol need to create and maintain its topological database?（）ALSAs from other routersBBeacons received on point-to-point linksChello packetsDRouting tables received from neighborsESAP packets sent by other routersFTTL packets from exclusive routers
多选题
What kind of information does a router running a link-state routing protocol need to create and maintain its topological database?（）
A
LSAs from other routers
B
Beacons received on point-to-point links
C
hello packets
D
Routing tables received from neighbors
E
SAP packets sent by other routers
F
TTL packets from exclusive routers
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单选题Which types of prefixes will a router running BGP most likely advertise to an IBGP peer， assuming it is not configured as a route reflector？ （）A prefixes received from any other BGP peer and prefixes locally originated via network statements or redistributedB all prefixes in its routing tableC prefixes received from EBGP peers and prefixes locally originated via network statements or redistributedD prefixes received from EBGP peers and prefixes received from route reflectorsE prefixes received from other IBGP peers， prefixes received from EBGP peers， and prefixes redistributed to BGPF prefixes received from other IBGP peers and prefixes received from route reflectors
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单选题Which types of prefixes will a router running BGP most likely advertise to an IBGP peer， assuming it is notconfigured as a route reflector？（）Aprefixes received from any other BGP peer and prefixes locally originated via network statements or redistributedBall prefixes in its routing tableCprefixes received from EBGP peers and prefixes locally originated via network statements or redistributedDprefixes received from EBGP peers and prefixes received from route reflectorsEprefixes received from other IBGP peers， prefixes received from EBGP peers，and prefixes redistributedto BGPFprefixes received from other IBGP peers and prefixes received from route reflectors
多选题In which two ways does the BGP graceful restart capability preserve prefix information during a restart？（）AThe peer router sends an end-of RIB message to the restarting routerBThe peer router immediately removes the BGP routes that it learned from the restarting router from its BGP routing tableCThe restarting router does not remove any stale prefixes after the timer for stale entries expiresDThe router establishes BGP sessions with other routers and relearns the BGP routes from other routers that are also capable of graceful restart. The restarting router waits to receive updates from the neighboring routers. When the neighboring routers send end-of-RIB messages to indicate that they are done sending updates， the restarting router starts sending its own updatesEThe restarting router removes any stale prefixes after the timer for stale entries expires
多选题What two things will a router do when running a distance vector routing protocol?（）ASend periodic updates regardless of topology changes.BSend entire routing table to all routers in the routing domain.CUse the shortest-path algorithm to the determine best path.DUpdate the routing table based on updates from their neighbors.EMaintain the topology of the entire network in its database.
多选题What kind of information does a router running a link-state routing protocol need to create and maintain its topological database?（）ALSAs from other routersBBeacons received on point-to-point linksChello packetsDRouting tables received from neighborsESAP packets sent by other routersFTTL packets from exclusive routers
多选题In which two ways does the BGP graceful capability preserve prefix information during a restart？（）AThe peer router immediately removes the BGP routers that it learned from the restarting router from itsBGP routing tables.BThe router establishes BGP sessions with other routers and relearns the BGP routes from others that are also capable of graceful restart. The restarting router waits to receive updates from the neighboringrouters. When the neighboring routers send end-of-RIB messages to indicate that they are donesending updates，the restarting router starts sending its own updates.CThe peer router sends an end-of-RIB message to the restarting router.DThe restarting router removes any stale prefixes after the timer for stale entries expires.EThe restarting router does not remove any stale prefixes after the timer for stale entries expires.