Fully Updated Do not hesitate to choose Flydumps Cisco 642-661 VCE Exam Dumps, all are updated timely by SAP expert professionals. Visit the site Flydumps.com to get the free Cisco 642-661 pdf dumps and free vce player.
Exam A QUESTION 1
Look at the picture.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
Answer: Check certifyme eEngine, Download from Member Center
QUESTION 2
What are two purposes of the BGP scan-time command? (Choose two.)
A. to tune the BGP process which walks the BGP table and confirms the reachability of next hops
B. to allow faster detection of downed BGP peers
C. to improve BGP convergence time
D. to tune the BGP update interval
E. to decrease the effects of unstable routes by increasing the route suppression time
Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 3
Which command is used to configure the external, confederation-wide AS number?
A. router(config)#router bgp {as-number}
B. router(config-router)#bgp confederation peers {as-number}
C. router(config-router)#bgp confederation identifier {as-number}
D. router(config-router)#bgp cluster-id {as-number}
E. router(config-router)#neighbor {ip address} remote-as {as-number}
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 4
When creating iBGP multipaths which three criteria must be met by multiple paths to the same destination? (Choose three.)
A. Router IDs must be the same on all routers.
B. Each destination must have a different next-hop address.
C. The destination AS-number must be different for each destination.
D. Multi-exit discriminator attributes must be the same on all paths.
E. Interior Gateway Protocol distance must be identical on each path.
Correct Answer: BDE Section: (none) Explanation
Explanation/Reference:
QUESTION 5
Lab
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
Answer: Check certifyme eEngine, Download from Member Center
QUESTION 6
Look at the picture.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
Answer: Check certifyme eEngine, Download from Member Center
QUESTION 7
Which two of these statements about hierarchical route reflectors are correct? (Choose two.)
A. A route reflector can be a client of another route reflector.
B. Each cluster within the hierarchy can only contain one route reflector.
C. The hierarchy can be as deep as needed.
D. A route reflector can have clients in different clusters.
E. Hierarchical route reflectors are set up using three levels (access, distribution, and core layers).
Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 8
What can cause a single sourced iBGP route not to be selected as the best route?
A. The BGP MED is 0.
B. The BGP next-hop is unreachable.
C. The BGP origin is incomplete.
D. The BGP weight is 0.
E. The BGP local preference is 0.
F. BGP synchronization is disabled.
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 9
Look at the picture.
A.
B.
C.
D.
Correct Answer: Section: (none) Explanation
Explanation/Reference:
Answer: Check certifyme eEngine, Download from Member Center
QUESTION 10
Which two of the following are true regarding the BGP Prefix-Based outbound route filtering feature? (Choose two.)
A. IP multicast routes are not supported.
B. Outbound route filtering is configured only on a per-address family basis.
C. Outbound route filtering can be configured for either iBGP or eBGP sessions.
D. The outbound route filter can be defined in a Prefix list, Distribute list or Access lists.
E. Outbound route filtering is more effective when a distance vector IGP is used.
Correct Answer: AB Section: (none) Explanation
Explanation/Reference:
QUESTION 11
Which configuration will enable the R1 router in the AS51003 sub-AS (member-AS) as a route reflector
with neighbors 10.1.1.1 and 10.2.2.2 as its route-reflector clients?
A. ! R1 router bgp 51003 bgp confederation identifier 55111 bgp confederation peers 51001 51002 neighbor 10.1.1.1 remote-as 51003 neighbor 10.2.2.2 remote-as 51003 neighbor 10.1.1.1 route-reflector-client neighbor 10.2.2.2 route-reflector-client
B. ! R1 router bgp 51003 bgp confederation identifier 55111 bgp confederation peers 51001 51002 neighbor 10.1.1.1 remote-as 51001 neighbor 10.2.2.2 remote-as 51002 neighbor 10.1.1.1 route-reflector-client neighbor 10.2.2.2 route-reflector-client
C. ! R1 router bgp 55111 bgp confederation identifier 51003 neighbor 10.1.1.1 remote-as 51003 neighbor
10.2.2.2 remote-as 51003 neighbor 10.1.1.1 route-reflector-client neighbor 10.2.2.2 route-reflector-client
D. ! R1 router bgp 55111 bgp confederation identifier 51003 neighbor 10.1.1.1 remote-as 55111 neighbor
10.2.2.2 remote-as 55111 neighbor 10.1.1.1 route-reflector-client neighbor 10.2.2.2 route-reflector-client
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 12
Which BGP configuration option is designed to reduce router processing load caused by unstable routes?
A. neighbor {ip-address} maximum-prefix {number}
B. bgp dampening
C. no sync
D. bgp deterministic-med
E. sync
F. bgp scan-time
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 13
How can you prevent multihomed customers with connections to two service providers from acting as a transit AS?
A. Enable BGP synchronization on all the customer routers.
B. Use MED to influence the inbound traffic from the ISPs.
C. Use static routing to the ISPs.
D. Use an AS-path access-list to filter the BGP updates to the ISPs.
E. Use conditional advertisements when sending BGP updates to the ISPs.
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 14
In the diagram, the customer is using BGP to connect to a single ISP over two permanent links. In this scenario, which input and output prefix-list filtering is typically enabled on the ISP routers? (Choose two.)
A. ip prefix-list test-in permit 10.1.1.0/24 le 32
B. ip prefix-list test-in permit 10.0.0.0/8 le 32
C. ip prefix-list test-in permit 0.0.0.0/0
D. ip prefix-list test-out permit 10.1.1.0/24 le 32
E. ip prefix-list test-out permit 10.0.0.0/8 le 32
F. ip prefix-list test-out permit 0.0.0.0/0
Correct Answer: AF Section: (none) Explanation
Explanation/Reference:
QUESTION 15
Based on the R1 router BGP configuration shown, which three statements are correct? (Choose three.)
A. R1 is in AS 50101 according to the 192.168.100.1 neighbor.
B. R1 is in AS 50101 according to the 10.1.1.1 neighbor.
C. The 192.168.100.1 neighbor must be directly connected to R1.
D. R1 is a route-reflector client.
E. The 10.4.4.4 neighbor is an EBGP neighbor.
F. BGP updates coming in from the 192.168.100.1 neighbor must be processed by the setlp route-map.
Correct Answer: ACF Section: (none) Explanation
Explanation/Reference:
QUESTION 16
Based on the following show ip bgp neighbors 2.2.2.2 output, which two statements are true? (Choose two.)R1#show ip bgp neighbors 2.2.2.2BGP neighbor is 2.2.2.2, remote AS 102, internal linkIndex 1, Offset 0, Mask 0x2BGP version 4, remote router ID 66.0.0.1BGP state=Established, table version=1, up for 00:14:52Last read 00:00:52, hold time is 180, keepalive interval is 60 secondsMinimum time between advertisement runs is 5 secondsReceived 233 messages, 0 notifications, 0 in queueSent 206 messages, 0 notifications, 0 in queuePrefix advertised 0, suppressed 0, withdrawn 0Connections established 17; dropped 16Last reset 00:15:02, due to User reset18 accepted prefixes consume 576 bytes, maximum limit 20Threshold for warning message 80%0 history paths consume 0 bytes
A. R1 has accepted 20 prefixes from the 2.2.2.2 IBGP neighbor.
B. R1 generated a warning message to the router’s console after the 2.2.2.2 IBGP neighbor sent 16 prefixes to R1.
C. R1 generated a warning message to the router’s console after the 2.2.2.2 IBGP neighbor sent 15 prefixes to R1.
D. R1 will drop its neighbor relationship to the 2.2.2.2 IBGP neighbor if 2.2.2.2 sends two more additional prefixes to R1.
E. R1 will drop its neighbor relationship to the 2.2.2.2 IBGP neighbor if 2.2.2.2 sends three more additional prefixes to R1.
Correct Answer: BE Section: (none) Explanation
Explanation/Reference:
QUESTION 17
Which of these situations best describe when to use the AS number translation feature?
A. All single-homed customers are using public AS numbers.
B. All single-homed customers are using private AS numbers.
C. All multihomed customers are using public AS numbers.
D. All multihomed customers are assigned different AS numbers from different ISPs.
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 18
Which two configuration commands will complete the BGP configuration on R1 so it will conditionally
announce the 172.0.0.0/8 prefix to R4 via BGP? (Choose two.)hostname R1!!output omitted!1.
___________________________!router bgp 65001neighbor 172.16.1.1 remote-as 65001neighbor 2.2.2.2
remote-as 65001neighbor 4.4.4.4 remote-as 387!2.
____________________________!
A. 2. network 172.16.0.0auto-summary
B. 2. network 172.0.0.0 mask 255.0.0.0
C. 1. ip route 172.0.0.0 255.0.0.0 null0
D. 1. ip route 172.0.0.0 255.0.0.0 null0 255
E. 1. ip route 172.0.0.0 255.0.0.0 172.16.1.1
F. 2. aggregate-address 172.0.0.0 mask 255.0.0.0
Correct Answer: BE Section: (none) Explanation Explanation/Reference:
QUESTION 19
The neighbor {ip-address} maximum-prefix {maximum number} command prevents which router condition?
A. frequent BGP session resets
B. routing instability
C. asymmetric routing
D. CPU and memory exhaustion
E. route flaps
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 20
Refer to the exhibit. What effect will the route-map PEER-FILTER have on the route 24.11.62.0/24 with a community of 10:100 injected by the peer router in AS632?
A. weight will be set to 100
B. weight will be set to 150
C. local preference will be set to 105
D. weight will be set to 100, local preference will be set to 105
E. weight will be set to 150, local preference will be set to 105
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
We provide Cisco 642-661 help and information on a wide range of issues.Cisco 642-661 is professional and confidential and your issues will be replied within 12 hous.Cisco 642-661 free to send us any questions and we always try our best to keeping our Customers Satisfied.
