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Free Huawei H12-921_V1.0 Practice Exam with Questions & Answers | Set: 7

Questions 61

In a VXLAN network, VTEP1 sends an IRB route with an RT value of 100:1 to VTEP2 VTEP2 will drop the route?

Options:
A.

In VTEP2, the inbound RT of EVPN instances is 100:1, and the inbound RT of IP VPN instances is 200:1

B.

In VTEP2, the inbound RT of EVPN instances is 200:1, and the inbound RT of IP VPN instances is 100:1

C.

In VTEP2, the inbound RT of EVPN instances is 100:1, and the inbound RT of IP VPN instances is 100:1

D.

In VTEP2, the inbound RT of EVPN instances is 200:1, and the inbound RT of IP VPN instances is 200:1

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Questions 62

In the Multi-Site scenario of a CloudFabric solution, what are the correct items in the following description of Layer 2 interoperability?

Options:
A.

In the mapped VNI mode, the Fabric GW at both ends uses BGP EVPN to negotiate a mapped VNI, and all packets sent to the peer end are routed using the mapped VNI VXLAN packing

B.

In practice, different sites have their own independent VNI space, so VXLAN tunnels inside different sites are likely to use different VNI C. Layer 2 interconnection is supported in two modes: local VNI and mapped VNI

C.

In local VNI mode, the local VNI of the local Fabric GW is used as the outbound VXLAN packet to encapsulate VXLAN packets to the VNI

Questions 63

For CloudFabric-based data center networks, the iMaster NCE-Fabric controller can be used to connect network devices for service delivery and configuration management. Which of the following is NOT the southbound interface between the controller and the network device?

Options:
A.

NETCONF

B.

OpenFlow

C.

gRPC

D.

RESTful

Questions 64

Which of the following options can be deployed in a lossless CloudFabric network to avoid the header blocking problem (HeadOfLineBlockingHOLB occurs?).

Options:
A.

PFC Deadlock Prevention

B.

PFC deadlock detection

C.

AI ECN

D.

INOF

Questions 65

As shown in the diagram, when DCs are interconnected via VLAN Hand-off, which of the following describes the error?

Options:
A.

DCI-GW requires VXLAN support

B.

DCI-GW does not learn the routes between the service host and the network

C.

Transmission of common VLAN packets between the Fabric-GW and the DCI-GW

D.

The DCI network only passes the underlay route for the DCI-GW

Questions 66

Which of the following protocols can implement dynamic VXLAN tunnel establishment in a data center network?

Options:
A.

BGP EVPN

B.

M-LAG

C.

OSPF

D.

MPLS

Questions 67

Which of the following descriptions of dynamic NAT64 mapping is wrong when an IPv6 user accesses an IPv4 service?

Options:
A.

Dynamic NAT64 technology converts a large number of IPv6 addresses into a small number of IPv4 addresses with the help of address pooling

B.

After receiving the response packets from the servers on the IPv4 network, the NAT64 device converts the IPv4 packets into IPv6 packets based on the session table

C.

The NAT64 device creates a session table that records address mappings

D.

DNS64 resolves the IPv4 service address and directly replies with the IPv4 address to the IPv6 user

Questions 68

An MPI collection operation is when all processes in a communication space work together to accomplish a specific data operation and transmission. Which of the following items fall into a common collection action type?

Options:
A.

MPI_Scatter

B.

MPI_AllReduce

C.

MPI_Gather

D.

P2P

Questions 69

Which of the following is not included in an open-source OpenStack node?

Options:
A.

Control nodes

B.

Compute nodes

C.

Service nodes

D.

Network nodes

Questions 70

Which of the following describes the error in CloudFabric's ZTP solution?

Options:
A.

In out-of-band networking, iMaster NCE-Fabric must manage out-of-band management switches

B.

In the in-band networking scenario, the iMaster NCE-Fabric must manage the root device

C.

Link comparison after the device is brought online

D.

Supports underlay network detection