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Huawei HCIE-Datacom V1.0 Sample Questions:

1. The TTL field encapsulated in the MPLS label header can prevent infinite loops of MPLS packets. Which of the following statements regarding the TTL field are correct?

A) MPLS encapsulation in frame mode supports the TTL field. MPLS encapsulation in cell mode does not support the TTL field.
B) The processing of IP TTL copy hides the LSR in an MPLS domain, improving network security.
C) MPLS provides two processing modes on the TTL field:TTL in the MPLS header copies the IP TTL value when an IP packet enters the MPLS network.The ingress LER sets the TTL value in the MPLS header to 255.
D) If TTL copy is disabled, users can use the tracert function to view the LSR of the MPLS domain.

2. Congestion avoidance technology can prevent congestion on an interface.

A) TRUE
B) FALSE

3. In the firewall hot standby scenario, which of the following status information can be backed up between the active and standby firewalls?

A) Dynamic MAC address table
B) Server mapping table
C) AAA user table (excluding the default user admin)
D) Session table

4. IS-IS supports multi-instance and multi-process. Which of the following statements are correct about IS-IS multi-instance and multi-process?

A) One VPN instance can be associated with multiple different IS-IS processes.
B) If multiple IS-IS processes are created on an IS-IS router, these processes are independent of each other.
C) One IS-IS process can be associated with multiple different VPN instances.
D) One IS-IS process can be associated with only one VPN instance.

5. When MPLS/BGP IP VPN is deployed, which of the following statements is incorrect about BGP route exchange between PEs and CEs?

A) In a CE multi-homing scenario, the BGP AS number replacement function may cause routing loops. BGP SoO can be used to prevent routing loops at a VPN site.
B) In a Hub&Spoke scenario, when Hub-CE and Hub-PE run an IGP for communication, EBGP cannot be configured on Spoke-PE or Spoke-CE.
C) When PEs and CEs use BGP to exchange routing information, you do not need to import private network routes to BGP on PEs.
D) In a scenario where PEs and CEs use BGP to exchange routing information, if two VPN sites have the same private AS number, the AS number replacement function can be used to replace the AS number in a received private network route with any specified AS number. This prevents routes from being discarded because of repeated AS numbers.

Solutions: