[单项选择] During BGP configuration on a router that has peered with other BGP speakers, the BGP command aggregate-a ddress 172.32.0.0 255.255.252.0 is issued. However, the peers do not receive this aggregate network in BGP advertisements. Also, the router does not have this aggregate network in its BGP table. Which option indicates a possible reason this command did not cause the router to advertise the aggregate network to its peers?（）
A. Interface NULL 0 is likely shutdown.
B. The next hop IP address must be a loopback address.
C. The BGP command no auto - summary is missing.
D. The BGP command no synchronization is missing.
E. Subnets of 172.32.0.0/22 do not exist in the BGP table.
F. The IGP running on this router does not have network 172.32.0.0/22 installed.

[单项选择]In BGP graceful restart, how does a peer router indicate the end of a route exchange?（）
A. an open message with the E bit set
B. an update message with the E bit set
C. an open message with an end-of-RIB marker
D. an update message with an end-of-RIB marker

[单项选择]A BGP router is configured with bgp dampening 8 300 1500 20 route-map 1 .What does the value of 20 represent?（）
A. reuse
B. suppress
C. half-life
D. max-suppress-time

[单项选择] Router R1 has been configured with the redistribute ospf 1 route - map fred command under router eigrp 1. The route map named fred needs to be configured to match routes to d etermine which routes are redistributed into EIGRP. Which of the following answers lists an item that cannot be matched by route map fred?（）
A. Subnet number
B. Next - hop router IP address of the route
C. Whether the route is an E1 or E2 route
D. The ro ute's tag
E. The number of router hops between the router and the subnet

[多项选择] Router R1 has the following configuration. Assuming R1's F0/0 interface has a MAC address of 0200.0011.1111, what IPv6 addresses will R1 list for interface F0/0 in the output of the show ipv6 interface brief command?（） interface f0/0 ipv6 address 2345:0:0:8::1/64
A. 2345:0:0:8::1
B. 2345:0:0:8:0:FF:FE11:1111
C. FE80::8:0:FF:FE11:1111
D. FE80:0:0:8::1

[多项选择] A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes. Which three path features would be reasons be for the rou ter to ignore some of the routes and not consider them as candidates for the best path?（）
A. paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
B. paths for which the NEXT_HOP is inaccess ible
C. paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
D. paths for which the NEXT_HOP is accessible
E. paths that are marked as synchronized in the show ip bgp output
F. paths that are marked as  not synchronized in the show ip bgp output

[单项选择] Router R1 has two LAN interfaces and three serial interfaces enabled for IPv6. All the inte rfaces use link local addresses automatically generated by the router. Which of the following could be the link local address of R1's interface S0/0?（）
A. FEA0::200:FF:FE11:0
B. FE80::200:FF:FE11:1111
C. FE80::0213:19FF:FE7B:0:1
D. FEB0::211:11FF:FE11: 1111

[单项选择] Router R1 has been configured with the commands rout er eigrp 9 and network 172.16.2.0 0.0.0.255, with no other current EIGRP configuration. R1's (working) Fa0/0 interface has been configured with IP address 172.16.2.2/26. R1 has found three EIGRP neighbors reachable via interface Fa0/0, including the rou ter with IP address 172.16.2.20. When the engineer attempts to add the neighbor 172.16.2.20 fa0/0 command in EIGRP configuration mode. Which of the following occurs？（）
A. Fa0/0 fails
B. The command is rejecteD
C. The existing three neighbors fail
D. The neighborship with 172.16.2.20 fails and then reestablishes
E. None of the other answers is correct

[多项选择] Router R1 has been configured for EIGRP. The configuratio n also includes an ACL with one line -access - list 1 permit 10.100.32.0 0.0.15.255 - and the EIGRP configuration includes the distribute -list 1 in command. Which of the following routes could not be displayed in the output of the show ip eigrp topology comm and as a result?（）
A. 10.10.32.0/19
B. 10.10.44.0/22
C. 10.10.40.96/27
D. 10.10.48.0/23
E. 10.10.60.0/30

[单项选择]Router R1 has been conf igured with an ipv6 route 2000::/64 S0/0/0 64 command.Which of the following does the 64 at the end of the command represent?（）
A. Metric
B. Administrative distance
C. Timeout (seconds)
D. Prefix length
E. Interface ID

[单项选择]If the router R1 has a packet with a destination address 192.168.1.255, what describes the operation of the network（）。
A. R1 will forward the packet out all interfaces.
B. R1 will drop this packet because this it is not a valid IP address.
C. As R1 forwards the frame containing this packet, Sw-A will add 192.168.1.255 to its MAC table.
D. R1 will encapsulate the packet in a frame with a destination MAC address of FF-FF-FF-FF-FF-FF
E. As R1 forwards the frame containing this packet, Sw-A will forward it to the device assigned the IP address of 192.168.1.255.

[单项选择] A BGP router has the following configuration：  protocols{  bgp{  export[policy-1 policy-2 policy-3]；  }}  policy-options{  policy-statementpolicy-2 {  termget-statics{  fromprotocol static；  thenaccept；  }  termreject-all {  thenreject；  }  }  policy-statementpolicy-1 {  termget-aggregate {  fromprotocol aggregate；  thenaccept；  }  termreject-all {  thenreject；  }  }  policy-statementpolicy-3 {  termget-ospf {  fromprotocol ospf；  thenaccept；  }  termreject-all {  thenreject；  }  }  }   Which policy term is evaluated first when exporting routes？（）
A. get-ospf
B. reject-all
C. get-statics
D. get-aggregate

[单项选择] Router R1 has eBGP connections to I1 and I 2, routers at the same ISP. The company that owns R1 can use public address range 130.1.16.0/20. The following output lists all the IP routes in R1's routing table within this rangE. Which of the following answers would cause R1 to advertise the 130.1.1 6.0/20 prefix to its eBGP peers?（） R1# show ip route 130.1.16.0 255.255.240.0 longer - prefixes ! lines omitteD... O 130.1.16.0/24 [110/3] via 10.5.1.1, 00:14:36, FastE thernet0/1 O 130.1.17.0/24 [110/3] via 10.5.1.1, 00:14:36, FastEthernet0/1 O 130.1.18.0/24 [110/3] via 10.5.1.1, 00:14:36, FastEthernet0/1
A. Configure R1 with the network 130.1.16.0 mask 255.255.240.0 command.
B. Configure R1 with the network 130.1.16 .0 mask 255.255.240.0 summaryonly command.
C. Redistribute from OSPF into BGP, filtering so that only routes in the 130.1.16.0/20 range are redistributed.
D. Redistribute from OSPF into BGP, filtering so that only routes in the 130.1.16.0/20 range are redistributed, and create a BGP summary for 130.1.16.0/20.

[单项选择] Router R1 has a connected route for 10.1.1.0/24 off interface Fa0/0. Interface Fa0/0 has been enabled for OSPF due to a router ospf 1 and network 10.0.0.0 0.0.0.255 area 0 command. R1 also has EIGRP configured, with the redistribute ospf 1 metric 1000 100 10 1 1500 command configured under EIGRP. Which one of the following is true?（）
A. R1 will not redistribute 10.1.1.0/24 into EIGRP, because R1 knows it as a connected route and not as an OSPF route.
B. For any OS PF routes redistributed into EIGRP, the metric components includea value equivalent to 1 Mbps of bandwidth.
C. For any OSPF routes redistributed into EIGRP, the metric components include a value equivalent to 100 microseconds of delay.
D. No subnets of network 10.0.0.0 will be redistributed due to the omission of the subnets parameter.

[单项选择] Router R1 has working interfaces S0/0, S0/1, and S0/2, with IP address/prefix combinations of 10.10.10.1/24, 10.10.11.2/24, and 10.10.12.3/22. R1's configuration includes the command s router eigrp 9 and network 10.0.0.0. The show ip eigrp interfaces command lists S0/0 and S0/1 in the command output, but not S0/2. Which answer gives the reason for the omission？（）
A. R1 has EIGRP neighbors reachable via S0/0 and  S0/1, but not via S0/2, so it is not included.
B. S0/2 may currently be in a state other than up/up.
C. The network 10.0.0.0 command requires the use of mask 255.0.0.0 due to EIGRP being classful by default.
D. S0/2 may be configured as a passive inter face.

[单项选择] BGP route dampening is configured on a BGP router. Whose routing behavior is affected by this configuration?（）
A. upstream EBGP neighbors
B. downstream EBGP neighbors
C. upstream IBGP neighbors learned by IBGP peers
D. downstream IBGP neighbors learned by IBGP peers

[单项选择]Router R1, in ASN 11, learns a BGP route from BGP peer R22 in ASN 22. R1 and then uses BGP to advertise the route to R2, also in ASN 11. What ASNs would you see in the BGP table on R2 for this route?（）
A. 22
B. 11
C. 1
D. None

[单项选择]A BGP router should use three export policies named add-communities, no-rfc1918-routes, andrejected-unwanted. Which export statement places the add-communities policy immediately before the default BGP policy?（）
A. export [add-communities no-rfc1918-routes rejected-unwanted];
B. export [no-rfc1918-routes add-communities rejected-unwanted];
C. export [add-communities rejected-unwanted no-rfc1918-routes];
D. export [no-rfc1918-routes rejected-unwanted add-communities];

[单项选择]以下关于BGP Peer Group描述正确的是？（）
A. iBGP和eBGP邻居可以放在同一个PeerGroup中
B. BGP邻居加入Peer Group后，不能单独对该邻居应用路由策略
C. BGP Peer Group分为internal、external两类
D. BGP Peer Group可以解决iBGP全连接问题

[单项选择] Router R1 currently has no configuration related to IPv6 or IPv4. The following configuration exis ts in a planning document intended to be used to copy/paste into Router R1 to enable EIGRP for IPv6 on interfaces F0/0 and S0/0/0. No other related configuration exists. Assuming F0/0 and S0/0/0 reach an up/up state, which of the following is true about EIGRP for IPv6 on R1 after this configuration has been pasted into R1?（） ipv6 router eigrp 1 ipv6 unicast- routing interface f0/0 ipv6 address 2000::1/64 ipv6 eigrp 1 interface s0/0/0 ipv6 address 2001::/64 eui - 64 ipv6 eigrp 1
A. EIGRP works on F0/0 and S0/0/0 without further configuration
B. EIGRP works with the addition of one command: a no shutdown command in EIGRP router configuration modE
C. EIGRP works with the addition of one command: an eigrp router - id command in EIGRP router configurat ion modE
D. EIGRP for IPv6 needs at least two more configuration commands before it works on R1