从给出的几句中选出没有语病的一句（)。A．研究者成功的关键，在于能否持之以恒。B．为了尽快发展教育

A. BGP NSF awareness is enabled

B. SSO for BGP NSF capability is enabled

C. BGP graceful restart awareness is enabled

D. 10.11.1.187 is configured as an NSF-capable BGP neighbor

A. BGP NSF awareness is enabled

B. SSO for BGP NSF capability is enabled

C. BGP graceful restart awareness is enabled

D. 10.11.1.187 is configured as an NSF-capable BGP neighbor

A.The Fa0/11 role confirms that SwitchA is the root bridge for VLAN 20.

B.VLAN 20 is running the Per VLAN Spanning Tree Protocol.

C.The MAC address of the root bridge is 0017.596d.1580.

D.SwitchA is not the root bridge, because not all of the interface roles are designated.

A．10.0.0.0

B．10.0.0.254

C．192.223.129.0

D．192.223.129.254

A. RTA will not establish an OSPF adjacency w ith RTB

B. RTA will send OSPF hello packets, but will not send OSPF updates

C. RTA will not accept OSPF hello packets from RTB

D. RTA will send OSPF updates, but will not establish an adjacency with RTB

A. Only traffic with a destination from 10.10.0.0/19 will be permitted.

B. Router RAR1 will accept only route 10.10.0.0/19 from its BGP neighbor.

C. Only traffic going to 10.10.0.0/19 will be permitted.

D. Router RAR1 will send only route 10.10.0.0/19 to its BGP neighbor.

A. The peer group shortens the EBGP configuration

B. The peer group shortens the IBGP configuration

C. All the configured neighbors are in autonomous system 100

D. Three AS - path filters are applied to each BGP neighbor

E. Only the outgoing filters are applied to BGP updates

A. The command neighbor send -community is configured on BGP neighbor 10.10.23.3.

B. If another path advertises the 6.6.6.0/24 path and has the default local preference, that path is more preferred.

C. Route 6.6.6.0/24 is learned by an IBGP peer.

D. The route 10.10.23.3 is not being advertised to other BGP neighbors.

A．255.255.255.0

B．255.255.254.0

C．255.255.252.0

D．255.255.248.0