What is the most likely reason that an IBGP route that has b

第1题：

What is the most likely reason that an IBGP route that has been selected as a best route is not entered into the IP routing table?（）

• A、Route reflectors are not passing updates properly.
• B、BGP synchronization has been enabled.
• C、The next-hop address is unreachable.
• D、No loopback interface has been configured on a router.

第2题：

An Enterprise rou ter, Ent1, displays the following excerpt from the show ip bgp command. ENT1 has an eBGP connection to an ISP router with address 3.3.3.3 and an iBGP connection to a router with address 4.4.4.4. Which of the following is most likely to be true?（） Network Next Hop Metric LocPrf Weight Path *> 3.3.3.3 0 0 1 1 1 1 2 18 i

• A、The Enterprise likely uses ASN 1.
• B、The neighboring ISP likely uses ASN 1.
• C、The route has been advertised through ASN 1 multiple times.
• D、Router Ent1 will add another ASN to the  AS_Path before advertising this route to its iBGP peer (4.4.4.4).

第3题：

第4题：

A remote host can be pinged from all switches except one.  Which of the following is the most likely reason for this failure？（）

• A、VTP pruning has isolated the switch.
• B、IP routing is disabled on the switch.
• C、PoE is failing on the remote port.
• D、There is a loop in the topology.

第5题：

One of your customers has decided to deploy location-based services in addition to existingwireless services. The customer requires that the additional access points to be deployed in monitor-onlymode. The most likely reason for this requirement is that the customer has which of these existingwireless devices？（）

• A、Data Collection
• B、802.11b/g VoIP
• C、802.11b and g clients
• D、RFID tags

第6题：

In BGP routing，what does the rule of synchronization mean？（）

• 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.

第7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 networkstatements or redistributed
• B、all prefixes in its routing table
• C、prefixes received from EBGP peers and prefixes locally originated via network statements or redistributed
• D、prefixes received from EBGP peers and prefixes received from route reflectors
• E、prefixes received from other IBGP peers， prefixes received from EBGP peers，and prefixes redistributed to BGP
• F、prefixes received from other IBGP peers and prefixes received from route reflectors

第8题：

第9题：

What is the BGP synchronization rule？（）

• A、Routing information received through an IBGP session is not forwarded to another IBGP neighbor， onlyto EBGP neighbors
• B、Routing information received through an EBGP session is not forwarded to another EBGP neighbor，only to IBGP neighbors
• C、BGP neighbor peerings are established and sychronized using the TCP 3-way handshake
• D、BGP shall not advertise a route until that route has been learned via an IGP also

第10题：

The following line of output was gathered on Enterprise Router Ent1 using the command show ip route. Which of the following answers is most likely to be true, based on thi s output？（） B 128.107.0.0 [20/10] via 11.11.11.11, 00:02:18

• A、This router has set the Weight of this route to 10.
• B、This router's BGP table lists this route as an iBGP route.
• C、This router's MED has been set to 10.
• D、This router's BGP table lists an AS_Path length of 10 for this route.