QUESTION 62
In a DC, the same network device can be used in different PoDs.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 63
In the DCN architecture, spine nodes connect various network devices to the VXLAN network.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 64
On a DCN, only OSPF can be used as the control plane protocol of the underlay network.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 65
In Huawei CloudFabric Solution, the DCN uses the spine-leaf architecture and uses the VXLAN protocol on its overlay network for interconnection.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 66
Which of the following statements are true about NETCONF?

A. NETCONF does not support the proprietary protocol extension capability.
B. NETCONF supports configuration rollback.
C. The NETCONF interface definition is comprehensive, standardized, facilitating interface control and use.
D. NETCONF supports SSH for improved security.

Correct Answer: BCD
QUESTION 67
A vSwitch uses local VLANs to distinguish traffic of different VMs.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 68
Which of the following services can be provided by the server virtual network for VMs?

A. Isolation
B. Layer 2 communication
C. Port mirroring
D. QoS

Correct Answer: ABCD
QUESTION 69
Which of the following components are mandatory in the FusionCompute virtualization suite?

A. UitraVR
B. eBackup
C. Host virtualization
D. Virtual network

Correct Answer: CD
QUESTION 70
Which of the following is not included in server virtualization?

A. Compute virtualization
B. Design virtualization
C. Storage virtualization
D. Network virtualization

Correct Answer: B
QUESTION 71
Hierarchical protection domains, also called protection rings, are defined for CPU instructions. Ring3 is the most privileged level.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 72
The working principle of the server OS’s network part complies with the OSI model. At which layer does the NIC driver work?

A. Physical layer
B. Data link layer
C. Session layer
D. Transport layer

Correct Answer: B
QUESTION 73
Which of the following are traffic encapsulation types?

A. dot1g
B. access
C. trunk
D. default

Correct Answer: ABC
QUESTION 74
A VXLAN tunnel is identified by a pair of VTEP IP addresses. During VXLAN tunnel establishment, the local and remote VTEP’s attempt to obtain each other’s IP addresses. If the VTEP IP addresses are reachable to each other at Layer 3, a VXLAN tunnel can be established.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 75
When you check the status of a VXLAN tunnel established between two devices, if the status is Down on one device, the status must also be Down on the other device.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 76
Which of the following statements is true about VXLAN?

A. On a centralized VXLAN network, Layer 2 and Layer 3 gateways are deployed on the same node.
B. VXLAN builds a large Layer 2 network and uses spanning tree protocols to prevent loops.
C. VBDIF interfaces need to be created in order to implement Layer 2 communication on a VXLAN network.
D. Bidirectional traffic forwarding can be implemented only after VTEPs at both ends of a VXLAN tunnel establish a VXLAN tunnel to the other.

Correct Answer: D
QUESTION 77
Which of the following statements is false about the overlay technology and VXLAN protocol?

A. A VXLAN network is built based on UDP.
B. VXLAN expands the number of subnets to 16 million and supports multi-tenancy.
C. A VXLAN tunnel endpoint that performs encapsulation is called a VNI.
D. VXLAN uses ECMP of the underlay network to improve network forwarding performance.

Correct Answer: C
QUESTION 78
The VNI field in a VXLAN packet has                 bits and can be used to isolate a large number of tenants. (Enter only digits.)
Correct Answer: 24
QUESTION 79
In the figure, there are three switches on a VXLAN network, and a centralized gateway is deployed on the spine switch. Which of the following statements is false?

A. Known unicast packets sent from Host1 to Host2 are processed by Leaf1 and then sent to Leaf2. In this case, the spine switch does not need to be aware of the packets.
B. Unknown unicast packets sent from Host1 to Host2 are processed by Leaf1, sent to the spine switch, and then forwarded to Leaf2 for processing.
C. Known unicast packets sent from Host3 to Host2 are transmitted only between Leaf1 and Leaf2. In this case, the spine switch does not need to be aware of the packets.
D. Unknown unicast packets sent from Host3 to Host2 are transmitted only between Leaf1 and Leaf2. In this case, the spine switch does not need to be aware of the packets.

Correct Answer: B

QUESTION 80
A VBDIF interface is a Layer 2 logical interface created for a BD.

A. TRUE
B. FALSE

Correct Answer: B