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单选题
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.
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更多 “单选题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.” 相关考题
考题
What are two advantages of BGP route aggregation?() (Choose two.)
A. It can reduce routing table size.B. It allows for optimal route selection.C. It can reduce the number of routing updates.D. It always shortens the attribute list for the aggregated route.
考题
When you display the routing table by entering the show route command, what does the* indicate?()
A.The route is a direct route.B.The route was selected as active.C.The route is a default route.D.The route was learned using a dynamic routing protocol.
考题
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, 00:02:18A. 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.
考题
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 1 218 iA. 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).
考题
Router R1 exists in an Enterprise that uses EIGRP as its routing protocol. The show ip route command output on router R1 lists the following phrase: Gateway of last resort is 1.1.1.1 to network 2.0.0.0.Whic h of the following is most likely to have caused this output to occur on R1?（）A. R1 has been configured with an ip default- network 2.0.0.0 command.B. R1 has been configured with an ip route 0.0.0.0 0.0.0.0 1.1.1.1 command.C. R1 has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.D. Another router has been configured with an ip default - network 2.0.0.0 command.E. Another router has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.
考题
Users on the 172.17.22.0 network cannot reach the server located on the 172.31.5.0 network.The network administrator connected to console port,issued the show ip route command,and was able to ping the server.Based on the output of the show ip route command topology shown in the graphic,what is the cause of the failure?（）A.IP routing is not enabledB.A static route is configured incorrectlyC.The network has not fully convergedD.The FastEthernet interface on Coffee is disabledE.The routing table on Coffee has not updatedF.The neighbor relationship table is not correctly updated
考题
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.
考题
Router R1 learns two routes with BGP for prefix 200.1.0.0/16. Comparing the two routes, route 1 has a shorter AS_Path Length, smaller MED, the same Weight, and smaller Local PreferencE. Which of the following is true about Router R1's choice of best path for this prefix?（）A、Route 1 is the best route.B、Route 2 is the best route.C、The routes tie as best, but one will be picked to be placed in the routing table based on tiebreakers .D、Neither route is considered best.
考题
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.
考题
What does the ip access-routes configuration command accomplish?（）A、It statically places a host route in the routing table.B、It statically associates an IP address with a customer.C、It dynamically creates a host route in the routing table.D、It dynamically assigns an address to the router's interface
考题
What are two advantages of BGP route aggregation?（） (Choose two.)A、It can reduce routing table size.B、It allows for optimal route selection.C、It can reduce the number of routing updates.D、It always shortens the attribute list for the aggregated route.
考题
When you display the routing table by entering the show route command, what does the* indicate?（）A、The route is a direct route.B、The route was selected as active.C、The route is a default route.D、The route was learned using a dynamic routing protocol.
考题
What is the BGP synchronization rule？（）A、Routing information received through an IBGP session is not forwarded to another IBGP neighbor， onlyto EBGP neighborsB、Routing information received through an EBGP session is not forwarded to another EBGP neighbor，only to IBGP neighborsC、BGP neighbor peerings are established and sychronized using the TCP 3-way handshakeD、BGP shall not advertise a route until that route has been learned via an IGP also
考题
What is the first step in BGP route selection?（）A、The local router prefers the route with the shortest as-path.B、The router first verifies that it has a route to thebgp Next Hop IP address.C、The local router prefers the route from the peer with the lowest peerid address.D、The local router prefers the route learned from anebgp peer over a route learned from anibgp peer.
考题
What is the first step in BGP route selection?（）A、The local router prefers the route with the shortest AS Path.B、The local router verifies that it has a route to the BGP Next Hop IP address.C、The local router prefers the route from the peer with the lowest peer ID address.D、The local router prefers the route learned from an EBGP peer over a route learned from an IBGP peer.
考题
单选题When you display the routing table by entering the show route command, what does the* indicate?（）A
The route is a direct route.B
The route was selected as active.C
The route is a default route.D
The route was learned using a dynamic routing protocol.
考题
单选题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 iA
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).
考题
单选题Router R1 exists in an Enterprise that uses EIGRP as its routing protocol. The show ip route command output on router R1 lists the following phrase: "Gateway of last resort is 1.1.1.1 to network 2.0.0.0". Whic h of the following is most likely to have caused this output to occur on R1?（）A
R1 has been configured with an ip default- network 2.0.0.0 command.B
R1 has been configured with an ip route 0.0.0.0 0.0.0.0 1.1.1.1 command.C
R1 has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.D
Another router has been configured with an ip default - network 2.0.0.0 command.E
Another router has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.
考题
单选题What is the first step in BGP route selection?（）A
The local router prefers the route with the shortest AS Path.B
The local router verifies that it has a route to the BGP Next Hop IP address.C
The local router prefers the route from the peer with the lowest peer ID address.D
The local router prefers the route learned from an EBGP peer over a route learned from an IBGP peer.
考题
单选题What is the first step in BGP route selection?（）A
The local router prefers the route with the shortest as-path.B
The router first verifies that it has a route to thebgp Next Hop IP address.C
The local router prefers the route from the peer with the lowest peerid address.D
The local router prefers the route learned from anebgp peer over a route learned from anibgp peer.
考题
单选题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, 00:02:18A
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.
考题
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？（）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 redistributedto BGPF
prefixes received from other IBGP peers and prefixes received from route reflectors
考题
单选题A router has been configured with an EIGRP variance of 3. Which of the following statements istrue？（）A
An error will result because a router cannot be configured with an EIGRP variance of 3 becausethe maximum variance number is 2B
The successor route will end up in the routing table， and so will any route with a metric at mostthree times greater than the value of the successor’s metricC
EIGRP will only advertise routes that are within three hops of the current routerD
The successor route will end up in the routing table， and so will any route with a metric at leastone third the value of the successor’s metricE
The best three routes with equal cost paths will end up in the routing tableF
The successor route will be any route with three times the value of the advertised distance
考题
多选题What are two advantages of BGP route aggregation?（） (Choose two.)AIt can reduce routing table size.BIt allows for optimal route selection.CIt can reduce the number of routing updates.DIt always shortens the attribute list for the aggregated route.
考题
单选题What is the BGP synchronization rule？（）A
Routing information received through an IBGP session is not forwarded to another IBGP neighbor， onlyto EBGP neighborsB
Routing information received through an EBGP session is not forwarded to another EBGP neighbor，only to IBGP neighborsC
BGP neighbor peerings are established and sychronized using the TCP 3-way handshakeD
BGP shall not advertise a route until that route has been learned via an IGP also
考题
单选题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.
考题
单选题You have been asked to configure your MX240 with a default route toward your upstream ISP at IP address 192.168.100.1. Which command successfully completes this task?（）A
user@router# set routing-options static route 0.0.0.0/0 next-hop 192.168.100.1B
user@router# set routing-options default route 0.0.0.0/0 next-hop 192.168.100.1C
user@router# set forwarding-options static route 0.0.0.0/0 next-hop 192.168.100.1D
user@router# set protocols default route 0.0.0.0/0 next-hop 192.168.100.1
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