What does a unicast prefix-based IPv6 multicast address start with？（）

A . The peer router immediately removes the BGP routers that it learned from the restarting router from itsBGP routing tables. B . The 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. C . The peer router sends an end-of-RIB message to the restarting router. D . The restarting router removes any stale prefixes after the timer for stale entries expires. E . The restarting router does not remove any stale prefixes after the timer for stale entries expires.

A . Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN) B . Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN) C . Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN) D . Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)

A . It will advertise the prefix to all other client peers and non-client peers. B . It will not advertise the prefix to EBGP peers. C . It will only advertise the prefix to all other IBGP peers. D . It will not advertise the prefix to any peers.

A . SNR B . noise floor C . level of interference D . Received Signal Strength Indicator

A . a pseudora ndom generated number B . its locally configured IPv4 address C . the DHCP - supplied device ID D . its MAC addre

A . The peer router sends an end-of RIB message to the restarting router B . The peer router immediately removes the BGP routes that it learned from the restarting router from its BGP routing table C . The restarting router does not remove any stale prefixes after the timer for stale entries expires D . The 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 updates E . The restarting router removes any stale prefixes after the timer for stale entries expire

A．Parents play a key role in a child's longevity. B．People with religious belief usually live longer. C．The way of life contributes most to longevity. D．The length of life is strongly linked with genes.

B．Reduce

A．It is a young man he likes best. B．It is just the name of his job. C．It is a popular American film.

A. 2000::1311:11F F:FE11:1111 B. 2000::C0A5:101 C. 2000:C0A5:101:: D. 2000::5EFE:C0A5:101

A. Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001. B. The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 2 LSP it floods into area 49.0001. C. The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001. D. The Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.