What is the BGP synchronization rule？（）

A . The network was originated via redistribution of an interior gateway protocol into BGP B . The network was defined by a static route C . The network was originated via a network or aggregate command D . The network was learned via EBGP E . The network was learned via IBGP

A . To influence the choice of best path (best route) for at least some routes B . To avoid having to configure static routes C . To allow redistribution of BGP routes into the IGP routing protocol D . To monitor the size of the Internet BGP table

A . On the CE router, PE neighbors must be configured in the VRF context on the CE router B . On PE routers, the CE IBGP neighbors are configured in the global BGP configuration C . On PE routers, the CE EBGP neighbors are configured in the VRF context D . A separate BGP process must be used on the PE routers for CE routers so that they do not use the same BGP routing process as that used for the PE router's other provider neighbor

A . by tracking the status of objects along the path to the e-commerce module B . by detecting undesirable conditions along the path to the e-commerce module C . by using the MED to communicate the site preferences for traffic to multiple ISPs D . by communicating the available prefixes， routing policies， and preferences of each site to its ISP E . by moving the SLB to a position where selected traffic to and from the servers does not go through the SLB

A . lowest cost B . highest bandwidth C . lowest hop-count D . path attributes E . lowest delay

A . additive B . none C . no-export D . no-advertise E . local-a

A . The network was originated via redistribution of an interior gateway protocol into BGP B . The network was defined by a static route C . The network was learned via IBGP D . The network was learned via EBGP E . The network was originated via a network or aggregate command

A . 0 B . 1 C . 10 D . 200

A .  BGP peers must be Layer 2-adjacent B .  EBGP multihop is not configured C .  The firewall is not configured to allow IP protocol 89 D .  The firewall is not configured to allow UDP 179.

A . The network was originated via redistribution of an interior gateway protocol into BGP. B . The network was defined by a static route. C . The network was learned via IBGP. D . The network was learned via EBGP. E . The network was originated via a network or aggregate command.

A . 10 minutes B . 5 minutes C . 120 seconds D . 60 seconds E . 30 minute

A . ip route 10.10.10.1 255.255.255.255 s0/0 ip route 10.10.10.1 255.255.255.255 s0/1 B . network 10.10.10.0 C . no synchronization D . neighbor 10.10.10.1 next-hop-self

A . BGP route-reflector should be in forwarding path of data coming from its clients B . BGP route-reflector does not have to be in the forwarding path of data coming from its clients C . BGP route-reflector will stop reflecting the routes if they’re not directly-connected clients D . None of the above

A . the number of consecutive TCP connections to the specified remote neig hbor B . the number of total TCP connections that the router has C . the number of times the router has established a TCP connection D . the number of neighbors that the router ha

A . origin,AS-path,next-hop B . AS-path,origin,MED C . AS-path,origin,weight D . AS-path,weight,MED

A . BGP uses TCP port 179. B . BGP ensures reliability of updates by using the reliable transport services of TCP. C . The network command with the mask option never insta lls a prefix into the BGP table unless there is a matching prefix exists in the IP route table. D . A TCP connection is required before exchanging updates. E . BGPuses notification and the update messages to establish and maintain the BGP neighbor relati onship.

A . 200 B . 0 C . 1 D . 10

A . A BGP router can only advertise an EBGP learned route， provided that the route is an IGP route in the routing table. B . A BGP router can only advertise an IBGP learned route， provided that the route is an IGP route in the routing table. C . A BGP router can only advertise an IBGP learned route， provided that the route is an IGP route that is not in the routing table. D . A BGP router can only advertise an EBGP learned route， provided that the route is a metric of 0 in the BGP table.

A . 22 B . 11 C . 1 D . None

A . Allows incoming TCP connections destined to port 179 B . Allows incoming TCP connections sourced from port 179 C . Allows incoming TCP connections from 1.1.1.1 and destined to，or sourced from port 179 D . Allows incoming TCP connections from 1.1.1.1 that are destined to port 179 E . Allows incoming TCP connections from 1.1.1.1 that are sourced from port 179

A . show ip bgp ipv6 B . show protocols ipv6 C . show ipv6 bgp D . show bgp ipv6

A . origin，AS-path，next-hop B . AS-path，origin，MED C . AS-path，origin，weight D . AS-path，weight，MED

A. Idle B. Opensent C. Active D. Established