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Share some CCIE 400-201 exam questions and answers below.
What ISIS TLVs are used to support MPLS traffic Engineering? (Choose three)
A. TLV 22 Extended IS neighbor
B. TLV 10 Authentication Information
C. TLV 134 Router ID
D. TLV 132 IP interface Address
E. TLV 128 IP Internal Reachability
F. TLV 135 IS Reachability
Answer: A, C, F
Which are two benefits of using segment routing over RSVP-TE for traffic engineering? (Choose two)
A. Segment routing traffic engineering tunnels always follow the low-latency path
B. ECMP-aware traffic engineering is natively supported by segment routing
C. Per-flow state is present only at the ingress node to the Segment routing-enabled network
D. Per-flow state is present at the ingress and egress node to the segment routing-enabled network
E. Per-flow state is maintained on all nodes of the segment routing-enabled network
Answer: B, C
ISP A provides L2VPN services to Company B through an MPLS network.
Company B uses all available CoS values to classify and different traffic forwarding within all Company B sites.
ISP A uses the following CoS values to differentiate service classes for the VPN customer traffic
• MPLS EXP 0 for Bronze service class
• MPLS EXP 1 for Silver service class
• MPLS EXP 2 for Gold service class
• Remaining MPLS EXP values for ISP A internal use
ISP A¡¯s policy is to forward VPN customer traffic based only on their Bronze, silver and Gold service classes.
Which QoS method must ISP A implement to achieve this?
A. Short-pipe Mode
B. Russian Doll Model
C. Pipe Mode
D. Uniform Mode
E. Maximum Allocation Model
Answer: D
In IEEE 802. lad deployments, which three represent valid port modes? (Choose three)
A.NNIS-port
B.NNI
C.UNIS-port
D.NNIC-port
E.UNIC-port
F.UNIT-port
Answer: BCE
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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