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H12-921_V1.0
HCIE-Data Center Network (Written) V1.0 Questions and Answers

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Questions # 41:

In CloudFabric intelligent O&M, which of the following components is completed in which of the following components is the fault closure of the fault 1-3-5 function?

Options:

iMaster NCE-FabricInsight

Cloud platform

Physical devices

iMaster NCE-Fabric

Answer

Explanation

Analysis: IMaster NCE-Fabric carries some O&M capabilities in the overall CloudFabric solution, including network management, path detection, network reachability verification, and fault 1-3-5 closed-loop . Built on Huawei's big data platform, iMaster NCE-FabricInsight receives data reported from a variety of network devices and uses intelligent algorithms to analyze network data to quickly discover network faults and hidden O&M hazards, quickly locate network faults, present key network events, and provide decision-making basis for network O&M.

Questions # 42:

Which of the following descriptions of container technology and virtual machine technology is wrong?

Options:

Container images are smaller than virtual machines

Containers start up faster than virtual machines

Containers don't need separate kernels

Containers are more isolated than virtual machines

Answer

Questions # 43:

Which of the following RDMA networks can implement RDMA across network segments over Ethernet

Options:

InfiniBand

RoCE v1

RoCE v2

iWARP

Answer

C, D

Questions # 44:

The CPU command defines a hierarchical protection domain, in which of the following levels has the highest authority to directly operate the hardware?

Options:

Ring0

Ring1

Ring2

Ring

Answer

Questions # 45:

In the CloudFabric cloud-network integration scenario, when the underlay network is manually deployed, which of the following options does not need to be deployed on the firewall?

Options:

Enable the NETCONF function

Set the default security policy to Allow

Turn on the virtual system

Configure hot standby for two machines in load balancing mode

Answer

Explanation

Parse:

Questions # 46:

Runbook action (An action is composed of multiple steps, in which of the following APIs should each step be required??)

Options:

RESTful

NETCONF

OpenFlow

gRPC

Answer

Questions # 47:

As shown in the figure in the Multi-PoD solution of the CloudFabric solution, VPC1 Ext VRF on Border Leaf1 is used in the VPC centralized egress scenario Which of the following methods can be used to connect a route between a VPC1 VRF and a VPC1 VRF?

Question # 47

Options:

Policy-based routing

OSPF

BGP

Static routes

Answer

Questions # 48:

Which of the following descriptions of the Underlay Distributed Gateway Networking Solution (VLAN Scheme) of Multivariate Computing Lossless Network is wrong?

Options:

This solution uses different BDs to achieve inter-tenant isolation to meet the security requirements of multi-tenant isolation

Spine is deployed as a stand-alone L3 device and forms ECMP with Leaf to achieve traffic load balancing

The Leaf switch is deployed as an L3 gateway and needs to enable the ARP Any-Agent feature

Spine-Leaf supports Layer 2 or Layer 3 networking

Answer

Explanation

Analysis: VLAN solution: For high-speed computing networks, different VLAN+ACLs are used to achieve inter-tenant isolation to meet the security requirements of multi-tenant isolation.

Questions # 49:

Which of the following protocols does iMasterNCEFabric use to obtain its interconnection relationship with other devices?

Options:

LLDP

NETCONF

Telemetry

SNMP

Answer

Questions # 50:

Which of the following descriptions of IP prefix routing in BGP EVPN is wrong?

Options:

The RT value carried by the IP prefix route is the Export RT value configured in the IP VPN-Instance

When carrying a host IP address, this type of route functions in the same way as an IRB type route in the VXL AN control plane and is primarily used for host IP route advertisement

The packets of an IP prefix route carry the L2 VNI and L3 VNI of the route

IP prefix routing can be used for hosts within a VXLAN network to access external networks

Answer

Explanation

Resolution: C Error: L3VNI is used for cross-network segment communication, and only L3VNI is used for cross-network segment communication for prefix routing, and L2VNI is not used for same-network segment communication ( L2VNI is used for same-network segment communication).

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