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

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Viewing questions 11-20 out of questions

Questions # 11:

What are the correct terms of the following description of the logical concepts of the CloudFabric solution iMasterNCEFabric?

Options:

Tenant: The basic unit of enterprise business management, and a tenant can only create one VPC

Logic Router: Used to connect VMs located on different networks, ensuring that VMs can communicate with other VMs across a three-layer network

Logic Switch: Used to connect different VMs to ensure that VMs can communicate with other VMs within the Layer 2 network

LoadPortVM is an access point into the network, and a physical port of a network device can be virtualized as multiple LoaicPorts

Answer

B, C, D

Questions # 12:

In an enterprise data center, the customer assigns a virtual firewall (VSYS1 and VSYS2) to the finance department (VPC1) and the sales department (VPC2), VSYS1 If it is located in the same ServiceLeaf as VSYS2, what are the correct descriptions of traffic orchestration in this scenario?

Options:

In the scenario where the Border Leaf and Service Leaf are separated, the traffic between the VPC and the VPC needs to pass through the Border Leaf

In the scenario where the Border Leaf and Service Leaf are separated, the controller will create VPC1 and VPC2 on the Service Leaf according to the VPC interoperability requirements Associated VRF

The tenant needs to specify the interworking VRF on the controller to complete the VPC interworking in this scenario

Regardless of whether the Border Leaf and Service Leaf are co-located or separated, the traffic model is consistent

Answer

B, D

Explanation

Analysis: A error, vsys1 and vsys2 are in the same service leaf, if they are in the same FW, they are interworking through fw, if they are in different ways fw, the interworking needs to be passed

serviceleaf。 Nothing to do with borderleaf. B is correct, because the vsys appears on the fw that connects to the serviceleaf, there must be a docking vsys on the serviceleaf VRF,

Change the VRF to belong to the corresponding VPC. C is incorrect, the tenant only needs to specify which pair of VPCs can communicate with each other on the controller, and does not need to consider how the underlying layer implements interoperability or specifies the interworking vrf. D is correct, in the scenario where the VPC is interconnected over the wall, two VSYS may fall on one FW, or they may fall on different FWs , the interoperability is only related to fw and serviceleaf, and has nothing to do with borderleaf. So the traffic model has nothing to do with how the border leaf is deployed.

Questions # 13:

The following: "Support docking with the community or third-party commercial OpenStack + third-party cloud management platform." "What level of the CloudFabric solution architecture is described?"

Options:

Network service layer

Business presentation/collaboration layer

Network Analysis/Control Layer

Compute the access layer

Answer

Questions # 14:

iMaster NCE-Fabric supports the Layer 3 topology intersight function, which of the following is not included?

Options:

Application network topology

Logical network topology

Physical network topology

Business network topology

Answer

Questions # 15:

How many switches do PFC deadlock detection need to work together?

Options:

Three units are synergistic

It is completed independently by a single unit

Two units work together

Four units are synergistic

Answer

Questions # 16:

In the CloudFabric solution, which of the following does iMaster NCE-Fabric collect device log information?

Options:

ERSPAN

Syslog

gRPC

NETCONF

Answer

Explanation

Resolution: ERSPAN is a mirroring protocol, gRPC is a protocol used in the telemetry mechanism, Netconf is a configuration management protocol, and syslog is a logging protocol

[MCQ].

Questions # 17:

For CloudFabric-based data center networks, you can use the iMaster NCE-Fabric controller and iMaster NCE-FabricInsight analyzer to provide refined O&M for the network. Which of the following is NOT an O&M feature provided by iMaster NCE-Fabric?

Options:

Network health

Service path detection

Three levels of rollback

Three-layer topology looks at each other

Answer

Explanation

Analysis: Network health analysis is a feature of FabricInsight. So the answer is A.

Questions # 18:

Which of the following descriptions of the data plane intent verification function of iMaster NCE-FabricInsight is incorrect?

Options:

This feature is modeled based on data plane information, such as routing forwarding entries and ARP entries

This function can determine whether the actual forwarding behavior of the network is consistent with the user's service intent

Data plane intent verification verifies the impact of configuration changes on the network in advance through pre-simulation modeling

This function verifies the connectivity of the entire network and tests whether there are problems such as routing black holes and routing loops in the network

Answer

Explanation

Analysis: Option C is incorrect: Data plane validation is based on real-time analysis of data to verify whether the results are in line with intent.

Questions # 19:

In the CloudFabric cloud-network integration scenario, which of the following descriptions of secondary restore is incorrect?

Options:

After services delivered by the cloud platform are restored on iMaster NCE-Fabric, you can use the batch configuration function to perform batch secondary orchestration

By default, VPC interconnection does not support communication between the same subnet under different routers

MDC cross-DC orchestration is not supported

The service chain can be configured for secondary restoration

Answer

Explanation

Resolution: A is correct, please refer to the NCE-fabric manual. D Correct. OpenStack does not support business chain orchestration. B Correct. C is incorrect, MDC cross-DC business orchestration is supported.