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H12-891 by Huawei - Page 1 | ExamCademy

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Which of the following BGP route attributes cannot be used to control BGP route selection?

A Community
B AS_Path
C MED
D Originator ID

By default, the domain ID of an OSPF process is the same as the process ID. You can run the domain-id command in the OSPF process view to change a domain ID.

A True
B False

VXLAN identifies tenants using VNIs, which are 24 bits long. A tenant can have one or more VNIs, and VXLAN supports a maximum of 12 million tenants.

A True
B False

In the SSH algorithm negotiation phase, the SSH server and client exchange the list of algorithms that hey support. The list of symmetric encryption algorithms of the SSH server is as follows: aes256-ctr, aes192-ctr, aes128-ctr, and aes256-cbc. The list of symmetric encryption algorithms of the SSH client is as follows: aes128-ctr, aes192-ctr, aes256-ctr, and aes256-cbc. Which of the following symmetric encryption algorithms can be used by both the SSH server and client?

A aes256-ctr
B aes192-ctr
C aes128-ctr
D aes256-cbc

As shown in the figure, PE1 and PE2 exchange private network route information with their respective CEs through OSPF, and the same domain ID is configured on PE1 and PE2. Which of the following LSA types may be transmitted to CE2 when PE2 imports BGP routes to the OSPF process?

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A Type 1 LSA
B Type 3 LSA
C Type 5 LSA
D Type 7 LSA

In 6PE and 6VPE networking, no VPN instance needs to be created on PEs.

A True
B False

On a medium-sized network configured with BGP, two RRs are typically deployed to improved BGP RR reliability. Typically, the cluster IDs of the two RRs are set as the same. Which of the following is the reason for that?

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A To prevent loops.
B To prevent sub-optimal routes.
C To prevent memory insufficiency caused by receiving too many routes on RRs.
D To prevent memory insufficiency caused by receiving too many routes on clients.

Which of the following is the default port used by iMaster NCE-Campus northbound open APIs?

A 18008
B 18006
C 18002
D 18000

On the network shown in the following figure, 802.1X authentication is deployed on GE0/0/1 of SW2. Which of the following statements are correct?

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A When MAC address-based access control is used, 802.1X clients A and B must be authenticated separately before they can obtain corresponding network access permissions.
B When interface-based access control is used, 802.1X client B can use network resources without being authenticated if 802.1X client A is successfully authenticated.
C Assume that SW2 uses MAC address-based access control mode and 802.1X client A passes authentication first. If 802.1X client A goes offline first, then 802.1X client B will still have the corresponding network access permissions because the interface status remains unchanged.
D Assume that SW2 uses the interface-based access control mode and 802.1X client A passes authentication first. If 802.1X client A goes offline first, then 802.1X client B will lose the corresponding network access permissions.

As shown in the figure, Site1 and Site2 need to communicate through a carrier's BGP/MPLS IP VPN. A public network tunnel has been established between PE1 and PE2 (label information is shown in the figure). PE1 has advertised the 192.168.1.0/24 route of Site1 to PE2 through MP-IBGR and route learning is normal. What is the top label in a data packet transmitted on the link P -> PE1 if the packet is sent by Site2 to 192.168.1.0/24 of Site1?

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A 3
B 6662
C 6661
D 8888

Which of the following statements regarding forwarding equivalence class (FEC) in MPLS are incorrect? (Choose all that apply.)

A Packets with the same FEC are processed differently on a MPLS network.
B FECs can be divided flexibly by source IP address destination IP address, source port, destination port, protocol type, VPN, or any combinations of them.
C MPLS classifies packets with the same forwarding processing mode into one FEC.
D One FEC has only one unique label marker.

The following figure shows the inter-AS MPLS L3VPN Option C (solution 2). ASBR-PE2 is connected to CE3 and runs EBGP. To enable all CEs to communicate with each other, in which of the following address families must peer relationships be enabled in the BGP process of ASBR-PE2? (Choose all that apply.)

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A VPNv4 address family
B Unicast BGP address family
C VPN instance unicast address family
D BGP-LS address family

Which of the following statements are correct about the topology shown in the figure? (Choose all that apply.)

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A PC1 and PC2 have different masks, so they cannot communicate with each other.
B PC1 and PC2 have different masks, but this does not necessarily cause a communication failure.
C PC1 and PC2 are associated with the same BD, so they can communicate with each other.
D PC1 and PC2 are associated with the same BD but have different VNIs, so they cannot communicate with each other.

The RR is critical to the Huawei SD-WAN Solution, and its deployment mode varies based on the scenario. In which of the following modes can an RR be deployed? (Choose all that apply.)

A Co-deployment of the RR and hub site
B Independent deployment of the RR
C Multi-area deployment of the RR
D Partially independent deployment of the RR

In the Huawei CloudCampus Solution, which of the following onboarding modes are supported by APs? (Choose all that apply.)

A CloudCampus APP
B Registration center query
C Web system -D.CLI

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