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H12-821_V1.0 Exam Dumps - Huawei HCIP-Datacom Questions and Answers

Question # 44

GRE is a VPN technology that can implement packet transmission over heterogeneous networks. Which of the following statements are true about GRE?

Options:

A.

GRE is a Layer 2 VPN encapsulation technology.

B.

GRE enables encapsulated data packets to be transmitted over another network layer protocol, but cannot encapsulate multicast data.

C.

GRE tunnels can work with IPsec to ensure the security of multicast services such as voice and video.

D.

GRE tunnels can extend the working range of network protocols with hop limits.

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Question # 45

The BFD (Bidirectional Forwarding Detection) state machine implements a three-way handshake for BFD session setup or teardown. Which of the following session states are involved in BFD session setup?

Options:

A.

Up

B.

AdminDown

C.

Init

D.

Down

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Question # 46

Which of the following statements is false, based on the following IGMP information on an interface of RTA?XC

Options:

A.

The interval for sending group-specific Query messages is 60s.

B.

The maximum time for response to Query messages is 10s.

C.

The IP address of the interface is 192.168.1.1.

D.

The IGMP version is IGMPV2.

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Question # 47

During routine O&M, the administrator checks the IGMP configuration on a router interface. The configuration is as follows:

display igmp interface

Interface information of VPN-Instance: public net

GigabitEthernet0/0/1(192.168.1.1):

IGMP is enabled

Current IGMP version is 2

IGMP state: up

IGMP group policy: none

IGMP limit: -

Value of query interval for IGMP (negotiated): -

Value of query interval for IGMP (configured): 60 s

Value of other querier timeout for IGMP: 0 s

Value of maximum query response time for IGMP: 10 s

Querier for IGMP: 192.168.1.1 (this router)

Given this, which of the following statements are true?

Options:

A.

The IP address of the interface is 192.168.1.1.

B.

The IGMP version is IGMPv2.

C.

The maximum response time to Query messages is 10s.

D.

The interval for sending Group-Specific Query messages is 60s.

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Question # 48

BFD can quickly detect faults in channels at multiple network layers, ensuring high reliability. To which of the following layers does BFD belong?

Options:

A.

Application layer

B.

Data link layer

C.

Physical layer

D.

Network layer

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Question # 49

GRE is a VPN encapsulation technology that is widely used to transmit packets across heterogeneous networks. Which of the following statements is false about GRE?

Options:

A.

GRE supports encryption and authentication.

B.

GRE supports multicast transmission.

C.

GRE is a Layer 3 VPN encapsulation technology.

D.

GRE can work with other VPN protocols to better ensure data security.

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Question # 50

Which Of the following IEEE 802.11 standards is also known as Wi-Fi 6?

Options:

A.

802.11ac

B.

802.11n

C.

802.11ax

D.

802.11b

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Question # 51

During routine operation and maintenance, an engineer checks the IGMP configuration on RTA. The configuration is as follows:

Interface information of VPN-Instance: public net

GigabitEthernet0/0/1 (192.168.1.1):

IGMP is enabled

Current IGMP version is 2

IGMP state: up

IGMP group policy: none

IGMP limit: -

Value of query interval for IGMP (negotiated): -

Value of query interval for IGMP (configured): 60 s

Value of other querier timeout for IGMP: 0 s

Value of maximum query response time for IGMP: 10 s

Querier for IGMP: 192.168.1.1 (this router)

Given this, which of the following statements is false?

Options:

A.

The IP address of the interface is 192.168.1.1.

B.

The maximum response time to Query messages is 10s.

C.

The interval for sending Group-Specific Query messages is 60s.

D.

The IGMP version is IGMPv2.

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Question # 52

Which of the following attributes cannot be directly referenced in an apply clause of a route-policy?

Options:

A.

community

B.

IP-prefix

C.

tag

D.

origin

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Question # 53

In BGP, Keepalive messages are used to maintain BGP peer relationships. When a BGP router receives a Keepalive message from a peer, the BGP router sets the state of the peer to Established and periodically sends Keepalive messages to maintain the connection. By default, the device sends Keepalive messages every seconds.

Options:

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Exam Code: H12-821_V1.0
Exam Name: HCIP-Datacom-Core Technology V1.0
Last Update: Apr 1, 2025
Questions: 299
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