Free H12-891 Sample Questions — HCIE-Datacom

OSPFv2 is an IGP running on IPv4 networks, whereas OSPFv3 is an IGP running on IPv6 networks. OSPFv3 and OSPFv2 use the same types of packets, including Hello, DD, LSR, LSU, and LSAck packets. Which of the following statements is correct about OSPFv3 packets?

• A. An OSPFv3 Hello packet carries the IPv6 address prefix of a router interface
• B. OSPFv3 uses the link-local address as the source address for sending packets. Packets can be forwarded beyond the originating link
• C. OSPFv3 uses the authentication field in the packet header for packet authentication
• D. OSPFv3 uses IPv6 multicast addresses FF02::5 and FF02::6 to send OSPFv3 packets

For telemetry data push, data can be transferred between devices and collectors using the TLS protocol. TLS must be configured for data encryption if data is pushed based on gRPC.

• A. True
• B. False

By default, the domain ID of an OSPF process is the same as the process ID. You can run the domain-id command in the OSPF process view to change a domain ID.

• A. True
• B. False

In Huawei's CloudWAN solution, the IGP is a supporting protocol that can collect and flood Layer 3 topology information on the entire network. In addition, the IGP can work with TWAMP/iFIT to collect SLA information such as link delay on the network.

• A. True
• B. False

On an MA network, SR-MPLS is enabled on all IS-IS routers. Which of the following statements is correct?

• A. If SR-MPLS is enabled, no DIS needs to be elected
• B. The DIS collects the SRGB of each router and advertises the SRGB to other routers on the MA network
• C. LSPs generated by the DIS describe all IS-IS routers on the network
• D. The DIS generates a special node ID

In the inter-AS MPLS L3VPN Option B solution, the RT filtering function must be disabled on ASBRs. Otherwise, VPNv4 routes cannot be transmitted.

• A. True
• B. False

After the network administrator of a company uploads the Python script demo.py of the OPS to a network device, which of the following commands can be used to run the script?

• A. (1) ops install file demo.py (2) ops execute python demo.py
• B. (1) ops install file demo.py (2) ops run python demo.py
• C. (1) ops set file demo.py (2) ops execute python demo.py
• D. (1) ops set file demo.py (2) ops run python demo.py

Which of the following statements about SR-MPLS Policy candidate paths are correct? (Choose all that apply.)

• A. An SR-MPLS policy can contain multiple candidate paths with the preference attribute
• B. The valid candidate path with the highest preference functions as the primary path of the SR-MPLS Policy
• C. candidate path can contain multiple segment lists with each segment list carrying the weight attribute
• D. Load balancing can be implemented among candidate paths and among segment lists

Which of the following types of routes is used by EVPN to implement fast convergence and split horizon?

• A. Ethernet A-D route
• B. MAC/IP advertisement route
• C. Inclusive multicast route
• D. Ethernet segment route

Which of the following statements about the underlay network of a VXLAN-based virtualized campus network is incorrect?

• A. The virtualized campus network solution introduces VXLAN technology, which uses MAC-in-UDP encapsulation to build a logical network over a traditional IP network
• B. The underlay network provides IP reachability so that VXLAN-encapsulated service packets can be transmitted between VTEPs
• C. When iMaster NCE-Campus is used to implement automatic orchestration of routing domains on the underlay network, only one routing protocol can be deployed in a single area
• D. When iMaster NCE-Campus is used to implement automatic orchestration of routing domains on the underlay network, only OSPF is supported