Exambible offers free demo for 642-883 exam. "Deploying Cisco Service Provider Network Routing (SPROUTE)", also known as 642-883 exam, is a Cisco Certification. This set of posts, Passing the Cisco 642-883 exam, will help you answer those questions. The 642-883 Questions & Answers covers all the knowledge points of the real exam. 100% real Cisco 642-883 exams and revised by experts!
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Q1. Which option is where BGP graceful restart is negotiated between peers?
A. open message
B. keep-alive message
C. notification message
D. update message
Answer: A
Q2. Which option can a network specialist use to configure connected route redistribution inside VRF "TEST" on Cisco IOS XR and allow only the prefix 10.10.10.0/24?
A. route-policy ALLOW-CONN
if destination in PERMIT_PREFIX then pass else
drop end-policy prefix-set PERMIT_PREFIX
10.10.10.0/24 end-set router bgp 65000
vrf TEST
rd 65000:10000
address-family ipv4 unicast
redistribute connected route-policy ALLOW-CONN
B. route-policy ALLOW-CONN if source in PERMIT_PREFIX then pass else
drop end-policy prefix-set PERMIT_PREFIX
10.10.10.0/24 end-set router bgp 65000
vrf TEST
rd 65000:10000
address-family ipv4 unicast
redistribute connected route-policy ALLOW-CONN
C. route-policy ALLOW-CONN if protocol is connected and source in PERMIT_PREFIX then pass else
drop end-policy prefix-set PERMIT_PREFIX
10.10.10.0/24 end-set router bgp 65000
vrf TEST
rd 65000:10000
address-family ipv4 unicast
redistribute connected route-policy ALLOW-CONN"
D. route-policy ALLOW-CONN if route-type is local and destination in PERMIT_PREFIX then pass
else
drop
end-policy prefix-set PERMIT_PREFIX
10.10.10.0/24 end-set router bgp 65000
vrf TEST
rd 65000:10000
address-family ipv4 unicast
redistribute connected route-policy ALLOW-CONN
Answer: A
Q3. Refer to the exhibit.
XR1 must have XR4 as the primary exit point for only the first three subnets received from AS 100 and may not impact the rest of the subnets. Which configuration on XR1 is correct?
A. prefix-set PREFER 100.100.100.0/30 le 32 route-policy LP if destination in PREFER then set local-preference 200 endif
B. route-policy LP if destination in (100.100.100.0/30 le 32) then set local-preference 200 else pass endif
C. prefix-set PREFER 100.100.100.0/29 le 32 route-policy LP if destination in PREFER then set local-preference 200 else pass endif
D. route-policy LP if destination in (100.100.100.0/29 le 32) then set local preference 200 else set local-preference 100 endif
Answer: B
Q4. For a Cisco IOS XR router, under which BGP configuration group can default-originate be added?
A. session-group
B. af-group
C. neighbor-group
D. peer-session template
Answer: B
Q5. Which option is a mechanism that can be implemented between two eBGP peers to communicate the routes each peer needs from the other?
A. ORF
B. ACL
C. prefix list
D. route map
Answer: A
Q6. Which option is the minimum required configuration to enable PIM on a Cisco IOS XR router interface?
A. router pim address-family ipv4 interface GigabitEthernet0/0/0/0
B. router pim interface GigabitEthernet0/0/0/0 address-family ipv4 enable
C. router pim address-family ipv4 interface GigabitEthernet0/0/0/0 enable
D. router pim interface GigabitEthernet0/0/0/0 enable
E. router pim address-family ipv4 interface GigabitEthernet0/0/0/0 address-family ipv4 enable
Answer: D
Q7. 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.
Answer: A,B
Explanation:
http://www.cisco.com/en/US/docs/ios/12_2s/feature/guide/fsbgporf.pdf
Restrictions for BGP Prefix-Based Outbound Route Filtering
. The BGP Prefix-Based Outbound Route Filtering feature does not support IP multicast routes.
. IP addresses that are used for outbound route filtering must be defined in an IP prefix-list. BGP distribute lists and IP access lists are not supported.
. Outbound route filtering is configured on only a per-address family basis and cannot be configured under the general session or BGP routing process (Router(config-router)#).
. Outbound route filtering is configured for only external peering sessions.
Q8. Refer to the exhibit.
R1 and XR2 cannot establish OSPF adjacency. Which option is the root cause of this issue?
A. stub flag mismatch
B. mismatched passwords
C. process ID mismatch
D. mismatched authentication types
E. MTU mismatch
Answer: D
Q9. Which of the following is a characteristic of dual-multihomed connectivity between an enterprise network and the service provider network or networks?
A. An enterprise network that is connected to two or more different service providers with two or more links per service provider and using BGP to exchange routing updates with the service providers.
B. Each service provider announces a default route on each of the links that connect to the customer with a different metric.
C. An enterprise network announces a default route to each service provider.
D. Load balancing can be achieved using the maximum-paths command.
Answer: A
Q10. An engineer is configuring an eBGP peering session. What is the default TTL value?
A. 1
B. 64
C. 127
D. 255
Answer: A