Cisco 642-885 - Deploying Cisco Service Provider Advanced Network Routing Exam
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Total 131 questions
Question #6 (Topic: )
What is one of the configuration errors within an AS that can stop a Cisco IOS-XR router
from announcing certain prefixes to its EBGP peers?
from announcing certain prefixes to its EBGP peers?
A. Some prefixes were mistagged with the no-export BGP community
B. Some prefixes were set with an MED of 0
C. The outbound BGP route policy only has set actions defined without any pass actions defined
D. The inbound BGP route policy only has set actions defined without any pass actions defined
Answer: A
Question #7 (Topic: )
Which field in the IPv6 header can be used to set the DSCP value?
A. Flow Label
B. Type of Service
C. Traffic Class
D. Precedence
E. EXP
Answer: C
Question #8 (Topic: )
Which four statements are correct regarding MSDP configurations and operations?
(Choose four.)
(Choose four.)
A. The MSDP peers are also typically the RPs in respective routing domains.
B. SA messages are flooded to all other MSDP peers without any restrictions
C. On Cisco IOS, IOS-XE, and IOS-XR, the router can be configured to cache the SA messages to reduce the join latency
D. SA messages are used to advertise active sources in a domain
E. MSDP establishes neighbor relationships with other MSDP peers using TCP port 639
F. MSDP peerings on Cisco IOS, IOS-XE, and IOS-XR support MD5 or SHA1 authentication
Answer: A,C,D,E
Question #9 (Topic: )
Which protocol can be used to secure multicast in a group multicast solution where group
key management is needed for secure key exchange?
key management is needed for secure key exchange?
A. DOI
B. ISAKMP
C. GDOI
D. IPsec
Answer: C
Question #10 (Topic: )
Which types of multicast distribution tree can PIM-SM use?
A. Only shared tree rooted at the source
B. Only shared tree rooted at the RP
C. Only shortest path tree rooted at the RP
D. Shared tree rooted at the source and shortest path tree switchover
E. Shared tree rooted at the RP and shortest path tree switchover
F. Shared tree rooted at the first-hop router and shortest path tree rooted at the RP
Answer: E
