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HCIE-Datacom V1.0 (Written) H12-891_V1.0-ENU exam questions are popular, and more and more candidates are eager to pass the HCIE-Datacom V1.0 H12-891_V1.0-ENU exam successfully. We today have updated the Huawei H12-891_V1.0-ENU exam questions to ensure that you can achieve success in the actual HCIE-Datacom V1.0 (Written) H12-891_V1.0-ENU exam.

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Begin to Test:

1. Which of the following does not belong to the scope of dynamic data collection on the live network before cutover?

Routing Protocol Status

ARP entry

Port Status

SNMP version

Question 1 of 25

2. If the configuration of IS-IS can be found through the display current-configuration command, but the configuration of IS-IS cannot be found through the display saved-configuration command, which of the following is the possible reason?

The running IS-IS configuration in the memory is not saved to Flash

No IS-IS command entered

Flash running IS-IS configuration, not saved to memory

The running IS-IS configuration in memory has been saved to Flash

Question 2 of 25

3. In the process of establishing an LDP session, the active party will first send Initialization information to negotiate parameters. If the passive party does not accept the negotiated parameters, which of the following messages will be sent?

Error Notification Message

Initialization Message

Hell Message

Keepalive Message

Question 3 of 25

4. The RF function of the BGP protocol can control the routing entries sent by the neighbors.
Which of the following tools does a BGP router need to use for this purpose?

Filter-Policy

IP Prefix List

ACL

Route-Policy

Question 4 of 25

5. Which of the following statements about the difference between NSR and NSF is correct?

NSF must rely on neighbor routers to complete

Both NSR and NSF require neighbor routers to complete

NSF can be done without neighbor routers

NSR must rely on neighbor routers to complete

Question 5 of 25

6. Which of the following extended community attributes is used by BGP EVPN to advertise the migration of connected VMs?

EVPN Router’s MAC Extend Community

MAC Mobility

Question 6 of 25

7. In the Huawei SD-WAN solution, which of the following routing protocols are used to transmit VPN routes between CPEs?

BGP

RIP

SPF

IS-IS

Question 7 of 25

8. In the virtualized campus network deployed through ilMaster NCE-Campus, some key parameters need to be configured in the authorization rules for access authentication. Which of the following is not included?

Binding authentication rules

Access method

Bind the authorization result

Authorization Rule Name

Question 8 of 25

9. When the user encounters different events during the authentication process, the user is in an unsuccessful authentication state. At this time, you can configure the authentication event authorization to meet the needs of these users to access specific network resources.
Which of the following descriptions about authentication event authorization is wrong?

If the user's network access rights are not configured when the authentication fails or the authentication server is Down, after the user authentication fails, the user remains in the pre-connected state and has the network access rights of the pre-connected user

Authentication event authorization can support authorization parameters including VLAN, user group and business scheme

Events that can trigger authentication event authorization include authentication server Down, authentication server unresponsive, and pre-connection, etc. Authentication failure cannot trigger authentication event authorization

Authorization of a non-authentication success state, also known as escape. For different authentication methods, there are different escape schemes. Some escape schemes are shared, and some escape schemes are only supported by specific authentication methods.

Question 9 of 25

10. When the switch is deployed with DHCP option 148, which of the following information will not be provided by the DHCP server to the switch to be deployed?

The IP address of the cloud management platform

The port number of the cloud management platform

The port number of the device to be deployed

The IP address of the device to be deployed

Question 10 of 25

11. When troubleshooting the BGP neighbor relationship, the network administrator finds that two directly connected devices use the Loopack port to establish a connection, so run display current-configuration configuration bgp to check the configuration of peer ebgp-mat-h p h p-c tnt.
Which of the following descriptions about the command is correct?

h p-c unt must be greater than 15

h p-c unt must be greater than 255

h p-c unt must be greater than 12

h p-c unt must be greater than 1

Question 11 of 25

12. When there are multiple redundant links in the IS-IS network, there may be multiple equal-cost routes.
Which of the following descriptions about equal-cost routing in an IS-IS network is wrong?

When the number of equal-cost routes in the network is greater than the number configured by the command, and these routes have the same priority, the route with the larger system ID of the next hop device is preferred for load balancing

If load balancing is configured, the traffic will be evenly distributed to each link

After the equal-cost route priority is configured, when the IS-IS device forwards the traffic reaching the destination network segment, it will not adopt the load balancing method, but forward the traffic to the next hop with the highest priority

For each route in the equal-cost route, a priority can be specified, the route with the highest priority will be preferred, and the rest will be used as backup routes

Question 12 of 25

13. Which of the following descriptions about traffic policing is correct?

Traffic policing can only be used in the inbound direction

Traffic policing will cache traffic that exceeds the limit

Traffic policing can only be done in the outbound direction

Traffic policing will drop traffic that exceeds the limit

Question 13 of 25

14. Which of the following descriptions about the difference between SPFv2 and SPFv3 are correct?

Both SPFv2 and SPFv3 support interface authentication, and OSPFv3 authentication is still implemented based on the fields in the SPF packet header

SPFv3 is similar to SPFv2 and uses the multicast address as the destination address of SPF packets

SPEv2 and OSPFv3 have the same type of packets: Hello, ODD, LSR, LSU, LSAack, and their packet formats are the same

The protocol number of SPFv2 in the IPv4 header is 89, and the next header number of OSPFv3 in the IPv6 header is 89

Question 14 of 25

15. Network slicing technology can divide exclusive network resources in the network to carry high-value service traffic. Which of the following descriptions about network slicing is wrong?

The channelized sub-interface technology adopts single-layer scheduling to realize flexible and refined management of interface resources and provide bandwidth guarantee

Generally, network slicing can be realized based on the channelized sub-interface FlexE technology

The layer used by the network slicing technology is different from that of the SR tunnel, and can be used at the same time as the SR tunnel

FlexE technology divides resources according to TDM time slots, satisfies the requirements of exclusive resource sharing and isolation, and realizes flexible and refined management of interface resources

Question 15 of 25

16. Which of the following descriptions about BGP/MPLS IP VPN routing interaction is wrong?

After receiving the VPNv4 route advertised by the ingress PE, the egress PE filters the VPNv4 routes according to the RT attribute carried by the route.

The egress PE can send IPv4 routes to the remote CE through BGP, IGP or static routes

The exchange between PE and CE is IPv4 routing information

The ingress PE converts the IPv4 routes received from the CE into VNPv4 routes, and saves them according to different VPP instances

Question 16 of 25

17. Which of the following regular expressions can match only the BGP route entries that pass through AS300 and then AS200?

^200|^300

200$|300$

_200 (200 300) _

_200[200 300]_

Question 17 of 25

18.

In the scenario of establishing a VXLAN tunnel in the BGP EVPN state, which of the following descriptions about the role of BGP EVPN Type 3 routes is wrong?

If the VTEP IP address carried by the received Type3 route is reachable by the Layer 3 route, a VXLAN tunnel to the peer will be established.

Type3 routing will carry L3 VNI

Type3 routing transmits Layer 2 and VTEP IP address information

In the case where the VTEP IP address of the Type3 route is reachable at Layer 3, if the peer end is the same as the local end, a headend replication table is created for subsequent BUM packet forwarding

Question 18 of 25

19. In the campus VXLAN network, which of the following equipment is used to connect the Fabric and the external network of the Fabric?

Extended

Brder

Transparent

Edge

Question 19 of 25

20. According to different network conditions, Layer 2 Portal authentication or Layer 3 Portal1 authentication can be deployed in the network. Which of the following descriptions is wrong?

When there is a Layer 2 network between the client and the access device, that is, the client and the access device are directly connected (or only Layer 2 devices exist between them), then Layer 2 Portal authentication can be configured.

When using Layer 2 authentication, the access device can learn the MAC address of the client, and the access device can only use the MAC address to identify the user

When there is a Layer 3 network between the client and the access device, that is, there is a Layer 3 forwarding device between the client and the access device, you need to configure Layer 3 Portal authentication.

When using Layer 3 authentication, the access device can learn the IP address of the client and use the IP address to identify the user

Question 20 of 25

21. Which of the following statements about choosing an authentication point location in a network is incorrect?

Deploying authentication at the access layer of the network is conducive to fine-grained management of permissions and high network security

After the user authentication point is moved from the access layer to the aggregation layer, the user's MAC authentication may fail

Setting the user authentication point at the access layer has advantages and disadvantages compared to setting it at the aggregation layer or the core layer. Policy linkage can be used as a solution.

When the user authentication point is moved from the access layer to the aggregation layer and the core layer, the number of authentication points is greatly reduced, which can effectively relieve the pressure on the AAA server

Question 21 of 25

22. Which of the following descriptions about "security group" and "resource group" is wrong in Business Travel?

The resource group supports static binding of IP addresses or address segments

On iMaster NCE-Campus, the UCL group is the security group

The any group can be used as both a source group and a destination group

The security group supports static binding of IP addresses or address segments

Question 22 of 25

23. There are multiple protocols that can change or obtain network device data. Which of the following protocols cannot be used to change network device data?

SNMP

NETCONF

RESTC NF

IPsec

Question 23 of 25

24. The following is a part of the NETCONF protocol message, <rpc xmlns="urn:ietf:params:xml:ns:netc nf:base:1.0" message-id="1024">Where is it located in the NETCONF architecture layer?

Transport layer

Message layer

Content Layer

Operation layer

Question 24 of 25

25. Which of the following descriptions about Prefix Segmente is incorrect?

On Huawei devices, Prefix Segment ID supports manual configuration and automatic protocol configuration

Prefix Segment is identified by Prefix Segment ID (SID)

Prefix Segment is used to identify a destination address prefix in the network

Prefix Segment spreads to other network elements through IGP protocol, globally unique

Question 25 of 25

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