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Huawei H12-891_V1.0 Exam Syllabus Topics:

Huawei HCIE-Datacom V1.0 Sample Questions:

1. The following figure shows some configurations of R1. Based on these configurations, which of the following statements about IS-IS on R1 are correct?
isis 1
is-level level-2
cost-style wide
network-entity 49.0022.ee8c.a0c2.baf1.00
isis 2 vpn-instance tt
is-level level-2
cost-style wide
network-entity 47.00ce.390d.efdc.b3e1.00
isis 3 vpn-instance rr
is-level level-2
cost-style wide
network-entity 47.cc0a.3efb.bbdd.aae1.00

A) Process 1 contains the global routing information and routing information of VRFs tt and rr.
B) Process 1 contains only global routing information.
C) Routing information of process 2 is isolated from that of process 3.
D) Routing information is shared between processes 2 and 3.

2. At the NETCONF content layer, the <config> operation may contain an operation attribute, which is used to specify an operation type for configuration data. Which of the following operation attributes are supported?

A) create: The configuration data identified by the element that contains this attribute is added to the configuration datastore only if the configuration data does not already exist in the configuration datastore. If it already exists in the configuration datastore, <rpc-error> with the <error-tag> value being data-exists is returned.
B) remove: The configuration data identified by the element that contains this attribute is deleted from the configuration datastore. If the configuration data does not exist in the configuration datastore, a deletion success message is returned.
C) delete: The configuration data identified by the element that contains this attribute is deleted from the configuration datastore. If the configuration data does not exist in the configuration datastore, a deletion success message is returned.
D) merge: The configuration data identified by the element that contains this attribute is modified if the configuration data already exists in the configuration datastore. If not, the configuration data is created in the datastore.

3. In 6PE networking, the shared explicit null label function can be enabled on routers to reduce the number of required MPLS labels. With this function, a router assigns a label with the value (enter only digits) to all 6PE routes.
0In 6PE (IPv6 over MPLS for Provider Edge), the shared explicit null label value is 0. When this function is enabled, the PE router assigns label 0 (IPv4 Explicit Null) to all IPv6 routes, reducing the label space consumption. This is known as label 0 reuse for IPv6 forwarding over MPLS.Exact Extract - HCIE-Datacom IPv6/MPLS Integration Section:"To optimize label usage in 6PE deployments, shared explicit null label (label 0) can be assigned to all 6PE routes."

4. In a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, which of the following statements about symmetric IRB forwarding are correct?

A) When VTEPs forward inter-subnet user communication packets, the VNI carried in the VXLAN header is the L3VNI.
B) Both the ingress VTEP and egress VTEP forward packets based on the Layer 3 forwarding table.
C) The egress VTEP forwards packets based only on the Layer 2 forwarding table.
D) The ingress VTEP forwards packets based only on the Layer 2 forwarding table.

5. Fill in Blank
In the figure, SR-MPLS is enabled on R1, R2, and R3. The SRGB (Segment Routing Global Block) range on R3 is from 20000 to 21000, and the prefix SID index configured on the loopback1 interface of R3 is 30.
In this case, the MPLS label corresponding to the loopback1 interface of R3 is _____.
(Enter an Arabic numeral without symbols.)

Solutions: