H12-891_V1.0問題集、Huawei実際の試験問題

質問 1

Which of the following statements about OPS (Open Programmability System) application scenarios is incorrect?

A. The OPS can be used to automatically check the health status of devices.

B. To enable a network device to automatically send a configuration file to the server after the device configuration is saved, users can use the maintenance assistant to create a timer trigger condition and periodically run the Python script.

C. When the OPS is used to automatically deploy unconfigured devices, a Python script is used to obtain the IP addresses of the software and configuration file server and download the system software and configuration file.

D. The OPS can reduce the impact of the network environment in some cases. For example, when collected information is transmitted to a server, the Python script can be used to temporarily store the execution result to the device when the network is disconnected. After the network is reconnected, the execution result is transmitted to the server.

正解: D

解説: (PassTest メンバーにのみ表示されます)

質問 2

On a router, SRv6 is enabled, and the configurations shown below are performed. Which of the following statements about the configurations are correct?
[Router-segment-routing-ipv6] locator srv6_locator1 ipv6-prefix 2001:DB8:ABCD::/64 static 32

A. The static segment of the node occupies 32 bits.

B. The Args field of this node occupies 32 bits.

C. The locator of this node is 2001:DB8:ABCD::.

D. The dynamic segment of the node occupies 32 bits.

正解: B,C,D

解説: (PassTest メンバーにのみ表示されます)

質問 3

Which of the following methods can be used to establish IPsec SAs? (Select All that Apply)

A. Establish IPsec SAs in IKE auto-negotiation mode

B. Manually establish IPsec SAs

C. Establish IPsec SAs through certificate negotiation

D. Establish IPsec SAs through template negotiation

正解: A,B,C,D

解説: (PassTest メンバーにのみ表示されます)

質問 4

The naming of SRv6 instructions complies with certain rules. You can quickly determine the function of an instruction based on the instruction name. Which of the following statements about the keywords in SRv6 instruction names are correct? (Select all that apply)

A. V: Searches a VPN instance routing table to forward packets.

B. X: Forwards packets through one or a group of specified Layer 3 interfaces.

C. M: Searches a Layer 2 forwarding table for unicast forwarding.

D. T: Searches a specified routing table to forward packets.

正解: A,B,D

解説: (PassTest メンバーにのみ表示されます)

質問 5

SR-MPLS uses IGP extensions to advertise labels and reserve bandwidth to support high-bandwidth services.

A. FALSE

B. TRUE

正解: B

解説: (PassTest メンバーにのみ表示されます)

質問 6

MPLS implements data forwarding based on two different planes. Which of the following statements regarding the forwarding mechanism are correct?

A. If the tunnel ID is not 0x0, the normal IP forwarding process starts.

B. After an IP packet enters an MPLS domain, the MPLS device forwards the packet based on FIB table queries.

C. If the tunnel ID is 0x0, the MPLS forwarding process starts.

D. The system automatically assigns an ID to the upper-layer application that uses a tunnel. This ID is also called the tunnel ID.

正解: D

解説: (PassTest メンバーにのみ表示されます)

質問 7

The channelized sub-interface and FlexE technologies both can be used to implement network slicing, but the application scenarios of the two technologies are slightly different. Which of the following statements about the two technologies are correct?

A. Only FlexE-based network slicing can be deployed across OTN devices.

B. Only network slicing based on channelized sub-interface can be deployed across MSTP devices.

C. It is recommended that channelized sub-interface be used to reserve resources for interfaces with a bandwidth of less than 50 Gbit/s.

D. It is recommended that FlexE be used to reserve resources for 50GE and higher-rate interfaces.

正解: A,C,D

解説: (PassTest メンバーにのみ表示されます)

質問 8

On an SR-MPLS network, manually configured prefix SIDs on different devices may conflict with each other. Assume that there are four routes (prefix/mask SID) as follows. Which of the following routes will be selected according to the conflict handling principle?

A. 3.3.3.3/32 → SID 1

B. 2.2.2.2/32 → SID 3

C. 1.1.1.1/32 → SID 1

D. 1.1.1.1/32 → SID 2

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 9

The command can be run to completely isolate Layer 2 and Layer 3 of different interfaces in a VLAN. (Use lowercase letters to supplement the command, which cannot be abbreviated.)

正解:

portisolateenable
Explanation:
port-isolate enableThe command port-isolate enable is used on Huawei switches to completely isolate traffic between ports within the same VLAN, both at Layer 2 and Layer 3 levels. This is typically used in carrier hotel or enterprise guest environments for security.Exact Extract - Huawei Switching Configuration Guide:"The port-isolate enable command isolates all traffic between ports in the same VLAN, including L2 and L3 traffic. It is commonly used for private VLAN-like functionality." HCIE-Datacom Switching Guide - VLAN Isolation Mechanisms Huawei S Series Switches - Port Isolation Configuration

質問 10

When MPLS/BGP IP VPN is deployed, which of the following statements is incorrect about BGP route exchange between PEs and CEs?

A. In a Hub&Spoke scenario, when Hub-CE and Hub-PE run an IGP for communication, EBGP cannot be configured on Spoke-PE or Spoke-CE.

B. When PEs and CEs use BGP to exchange routing information, you do not need to import private network routes to BGP on PEs.

C. In a CE multi-homing scenario, the BGP AS number replacement function may cause routing loops. BGP SoO can be used to prevent routing loops at a VPN site.

D. In a scenario where PEs and CEs use BGP to exchange routing information, if two VPN sites have the same private AS number, the AS number replacement function can be used to replace the AS number in a received private network route with any specified AS number. This prevents routes from being discarded because of repeated AS numbers.

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 11

Node segments in SR-MPLS must be manually configured.

A. FALSE

B. TRUE

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 12

OSPF is deployed on a campus network to implement network interconnection. An engineer configures R2 as shown in the figure. Which of the following statements is incorrect about LSAs on the OSPF network?

A. Type 3 LSAs are not flooded in Area 1.

B. Type 5 LSAs are flooded in Area 2.

C. Type 5 LSAs are flooded in Area 1.

D. Type 3 LSAs are not flooded in Area 2.

正解: C

解説: (PassTest メンバーにのみ表示されます)

質問 13

MPLS supports Forwarding Equivalence Class (FEC). Which of the following cannot be used as a FEC allocation standard?

A. Class of Service (CoS)

B. Application protocol

C. Fragment offset

D. Destination address

正解: C

解説: (PassTest メンバーにのみ表示されます)

質問 14

According to the following information displayed on a router, which of the following are the causes of the failure in establishing an OSPF adjacency relationship?
OSPF error statistics:
1: Hello timer mismatch
0: Netmask mismatch
0: Bad checksum
0: Bad authentication type
0: Unknown neighbor
0: Extern option mismatch

A. Hello packets are sent at different intervals.

B. The area types are inconsistent.

C. The IP address masks of the interfaces are inconsistent.

D. The area IDs are inconsistent.

正解: A,D

解説: (PassTest メンバーにのみ表示されます)

質問 15

IPsec uses an asymmetric encryption algorithm to encrypt the symmetric algorithm key, which it uses to encrypt/decrypt data, ensuring security and performance.

A. FALSE

B. TRUE

正解: B

解説: (PassTest メンバーにのみ表示されます)

Huawei HCIE-Datacom V1.0 - H12-891_V1.0 模擬練習