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Total 498 questions
Refer to the exhibit.
An engineer configured BGP between routers R1 and R3. The BGP peers cannot establish neighbor adjacency to be able to exchange routes.
Which configuration resolves this issue?
- A. R1 router bgp 6501 address-family ipv6 neighbor AB01:2011:7:100::3 activate
- B. R3 router bgp 6502 address-family ipv6 neighbor AB01:2011:7:100::1 activate
- C. R1 router bgp 6501 neighbor AB01:2011:7:100::3 ebgp-multihop 255
- D. R3 router bgp 6502 neighbor AB01:2011:7:100::1 ebgp-multihop 255
Answer : B
Refer to the exhibit.
Which action resolves the adjacency issue?
- A. Configure the same autonomous system numbers.
- B. Match the hello interval timers.
- C. Match the authentication keys.
- D. Configure the same EIGRP process IDs.
Answer : A
Reference:
https://www.ciscopress.com/articles/article.asp?p=2999383&seqNum=2
Refer to the exhibit.
BGP and EIGRP are mutually redistributed on R3, and EIGRP and OSPF are mutually redistributed on R1. Users report packet loss and interruption of service to applications hosted on the 10.1.1.0/24 prefix. An engineer tested the link from R3 to R4 with no packet loss present but has noticed frequent routing changes on
R3 when running the debug ip route command.
Which action stabilizes the service?
- A. Reduce frequent OSPF SPF calculations on R3 that cause a high CPU and packet loss on traffic traversing R3.
- B. Tag the 10.1.1.0/24 prefix and deny the prefix from being redistributed into OSPF on R1.
- C. Place an OSPF distribute-list outbound on R3 to block the 10.1.1.0/24 prefix from being advertised back to R3.
- D. Repeat the test from R4 using ICMP ping on the local 10.1.1.0/24 prefix, and fix any Layer 2 errors on the host or switch side of the subnet.
Answer : B
Refer to the exhibit. An engineer has configured policy-based routing and applied the configuration to the correct interface. How is the configuration applied to the traffic that matches the access list?
- A. It is forwarded using the routing table lookup.
- B. It is sent to 209.165.202.129.
- C. It is dropped.
- D. It is sent to 209.165.202.131.
Answer : D
The first next hop IP is down, so the second one will be used.
Refer to the exhibit.
A network administrator reviews the branch router console log to troubleshoot the OSPF adjacency issue with the DR router.
Which action resolves this issue?
- A. Stabilize the DR site flapping link to establish OSPF adjacency.
- B. Advertise the branch WAN interface matching subnet for the DR site.
- C. Configure the WAN interface for DR site in the related OSPF area.
- D. Configure matching hello and dead intervals between sites.
Answer : B
Reference:
https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13699-29.html
Refer to the exhibit.
When the FastEthernet0/1 goes down, the route to 172.29.0.0/16 via 192.168.253.2 is not installed in the RIB. Which action resolves the issue?
- A. Configure feasible distance greater than the reported distance.
- B. Configure feasible distance greater than the successor's feasible distance.
- C. Configure reported distance greater than the successor's feasible distance.
- D. Configure reported distance greater than the feasible distance.
Answer : A
Reference:
https://www.practicalnetworking.net/stand-alone/eigrp-feasibility-condition/
Refer to the exhibit.
AS111 is receiving its own routes from AS200 causing a loop in the network.
Which configuration provides loop prevention?
- A. router bgp 111 neighbor 195.1.1.1 as-override no neighbor 195.1.2.2 allowas-in
- B. router bgp 111 no neighbor 195.1.1.1 allowas-in no neighbor 195.1.2.2 allowas-in
- C. router bgp 111 neighbor 195.1.2.2 as-override no neighbor 195.1.1.1 allowas-in
- D. router bgp 111 neighbor 195.1.1.1 as-override neighbor 195.1.2.2 as-override
Answer : B
Reference:
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/112236-allowas-in-bgp-config-example.html
Refer to the exhibit.
AS65510 iBGP is configured for directly connected neighbors. R4 cannot ping or traceroute network 192.168.100.0/24.
Which action resolves this issue?
- A. Configure R1 as a route reflector server and configure R2 and R3 as route reflector clients.
- B. Configure R4 as a route reflector server and configure R2 and R3 as route reflector clients.
- C. Configure R4 as a route reflector server and configure R1 as a route reflector client.
- D. Configure R1 as a route reflector server and configure R4 as a route reflector client.
Answer : D
Users report issues with reachability between areas as soon as an engineer configured summary routes between areas in a multiple area OSPF autonomous system.
Which action resolves the issue?
- A. Configure the area range command on the ASBR.
- B. Configure the summary-address command on the ASBR.
- C. Configure the summary-address command on the ABR.
- D. Configure the area range command on the ABR.
Answer : D
Refer to the exhibit.
Which set of commands restore reachability to loopback0?
- A. interface loopback0 ip address 4.4.4.4 255.255.255.0 ip ospf network point-to-point
- B. interface loopback0 ip address 4.4.4.4 255.255.255.0 ip ospf interface area 10
- C. interface loopback0 ip address 4.4.4.4 255.255.255.0 ip ospf network broadcast
- D. interface loopback0 ip address 4.4.4.4 255.255.255.0 ip ospf interface type network
Answer : A
Reference:
https://networkengineering.stackexchange.com/questions/13099/why-do-we-use-ospf-point-to-point-networks-for-loopbacks
AS 111 wanted to use AS 200 as the preferred path for 172.20.5.0/24 and AS 100 as the backup. After the configuration, AS 100 is not used for any other routes.
Which configuration resolves the issue?
- A. route-map SETLP permit 10 match ip address prefix-list PLIST1 set local-preference 99 route-map SETLP permit 20
- B. router bgp 111 no neighbor 192.168.10.1 route-map SETLP in neighbor 192.168.20.2 route-map SETLP in
- C. route-map SETLP permit 10 match ip address prefix-list PLIST1 set local-preference 110 route-map SETLP permit 20
- D. router bgp 111 no neighbor 192.168.10.1 route-map SETLP in neighbor 192.168.10.1 route-map SETLP out
Answer : A
There is an implicit deny all at the end of any route-map so all other traffic that does not match 172.20.5.0/24 would be dropped. Therefore, we have to add a permit sequence at the end of the route-map to allow other traffic.
The default value of Local Preference is 100 and higher value is preferred so we have to set the local preference of AS100 lower than that of AS200.
Refer to the exhibit. The ISP router is fully configured for customer A and customer B using the VRF-Lite feature.
What is the minimum configuration required for customer A to communicate between routers A1 and A2?
- A. A1 interface fa0/0 description To->ISP ip add 172.31.100.1 255.255.255.0 no shut ! router ospf 100 net 172.31.100.1 0.0.0.255 area 0 A2 interface fa0/0 description To->ISP ip add 172.31.200.1 255.255.255.0 no shut ! router ospf 100 net 172.31.200.1 0.0.0.255 area 0
- B. A1 interface fa0/0 description To->ISP ip vrf forwarding A ip add 172.31.100.1 255.255.255.0 no shut ! router ospf 100 vrf A net 172.31.200.1 0.0.0.255 area 0 A2 interface fa0/0 description To->ISP ip vrf forwarding A ip add 172.31.100.1 255.255.255.0 no shut ! router ospf 100 vrf A net 172.31.200.1 0.0.0.255 area 0
- C. A1 interface fa0/0 description To->ISP ip vrf forwarding A ip add 172.31.100.1 255.255.255.0 no shut ! router ospf 100 net 172.31.100.1 0.0.0.255 area 0 A2 interface fa0/0 description To->ISP ip vrf forwarding A ip add 172.31.200.1 255.255.255.0 no shut ! router ospf 100 net 172.31.200.1 0.0.0.255 area 0
- D. A1 interface fa0/0 description To->ISP ip add 172.31.200.1 255.255.255.0 no shut ! router ospf 100 net 172.31.200.1 0.0.0.255 area 0 A2 interface fa0/0 description To->ISP ip add 172.31.100.1 255.255.255.0 no shut ! router ospf 100 net 172.31.100.1 0.0.0.255 area 0
Answer : A
An engineer is implementing a coordinated change with a server team. As part of the change, the engineer must configure interface GigabitEthernet2 in an existing VRF "RED" then move the interface to an existing VRF "BLUE" when the server team is ready. The engineer configured interface GigabitEthernet2 in VRF
"RED":
interface GigabitEthernet2
description Migration ID: B410A82D0935G35
vrf forwarding RED
ip address 10.0.0.0 255.255.255.254
negotiation auto
Which configuration completes the change?
- A. interface GigabitEthernet2 no vrf forwarding RED vrf forwarding BLUE ip address 10.0.0.0 255.255.255.254
- B. interface GigabitEthernet2 no ip address vrf forwarding BLUE
- C. interface GigabitEthernet2 no vrf forwarding RED vrf forwarding BLUE
- D. interface GigabitEthernet2 no ip address ip address 10.0.0.0 255.255.255.254 vrf forwarding BLUE
Answer : A
Refer to the exhibit. R5 should not receive any routes originated in the EIGRP domain. Which set of configuration changes removes the EIGRP routes from the R5 routing table to fix the issue?
- A. R4 route-map O2R deny 10 match tag 111 route-map O2R permit 20 ! router rip redistribute ospf 1 route-map O2R metric 1
- B. R2 route-map E20 deny 20 R4 route-map O2R deny 10 match tag 111 ! router rip redistribute ospf 1 route-map O2R metric 1
- C. R4 route-map O2R permit 10 match tag 111 route-map O2R deny 20 ! router rip redistribute ospf 1 route-map O2R metric 1
- D. R4 route-map O2R deny 10 match tag 111 ! router rip redistribute ospf 1 route-map O2R metric 1
Answer : A
Refer to the exhibit. The network administrator configured the network to connect two disjointed networks and all the connectivity is up except the virtual link, which causes area 250 to be unreachable.
Which two configurations resolve this issue? (Choose two.)
- A. R2 router ospf 1 no area 234 virtual-link 10.34.34.4 area 234 virtual-link 0.0.0.44
- B. R2 router ospf 1 no area 234 virtual-link 10.34.34.4 area 0 virtual-link 0.0.0.44
- C. R4 router ospf 1 no area 234 virtual-link 10.23.23.2 area 0 virtual-link 0.0.0.22
- D. R2 router ospf 1 router-id 10.23.23.2
- E. R4 router ospf 1 no area 234 virtual-link 10.23.23.2 area 234 virtual-link 0.0.0.22
Answer : AE
Reference:
https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13703-8.html
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