Share some CCIE 400-201 exam questions and answers below.
A service provider is using multicast flows to provide streaming video content to its customers. Video streams are sometimes interrupted, and network instability is determined to be the cause.
Which action should the service provider take to decrease the burden on the router resources in an unstable unicast routing environment?
A. increase the PIM hello hold timers
B. reduce the volume of query messages
C. filter unnecessary SA messages
D. tune the RPF backoff
Answer: D
A service provider is in the process of providing Layer 2 and Layer 3 VPN services through a MPLS LDP-enabled backbone. With load increasing in the service provider domain, scalability become the most important.
Based on the local label allocation filtering failure, which subnet of prefixes must be selected to meet these requirements?
A. CE loopbacks only that are used as BGP next hop
B. PE loopbacks that are used as BGP next hop
C. RR, P, and PE loopbacks that are used as BGP next hop
D. all /32 prefixes advertised in the IGP
Answer: B
A service provider is offering VoIP services level agreement to customers.
Which configuration provides validation that the service level agreement has been honored?
A. ipsla 999 udp-jitter 209.165.200.225 1000 codec g729a tag VoIP-SLA
ipsla schedule 999 life forever start-time now
B. ipsla 999 icmp-jitter 209.165.200.225 tag VoIP-SLA
ipsla schedule 999 life forerver start-time now
C. ipsla 99 icmp-jitter 209.165.200.225 tos 160
ipsla schedule 999 life forever start-time now
D. ipsla 999 udp-jitter 209.165.200.225 tos 160
ipsla schedule 99 life forever start-time now
E. ipsla 999 udp-jitter 209.165.200.225 tos 160
ipsla schedule 999 life forever start-time now
F. ipsla 999 udp-jitter 209.165.200.225 1000 codec g729a tos 160
ipsla schedule 99 life forever stat-time now
Answer: F
Which two BGP mechanisms solve the full-mesh paradigm? (Choose two)
A. Confederation
B. Router policy filtering
C. Hierarchical VPLS
D. MPLS VPN
E. Route reflectors
F. BGP link state
G. Community SOO
Answer: A, E
REP has been deployed in a segment. A network operations engineer notices that a segment port does not become operational. What is the root cause of this issue?
A.More than one neighbor has the same segment ID.
B.A neighbor is using a different port ID.
C.A local port is in alternate port state.
D.A neighbor port is in blocked state.
Answer: A
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