H12-891_V1.0 Exam Questions

The OPS (Open Programmability System) function of Huawei network equipment provides open programmability capabilities of network equipment. To facilitate users to write scripts, Hu...

Node Segment in SR-MPLS must be configured manually.

In the firewall dual-machine hot standby scenario, the heartbeat interface can be directly connected physically or through an intermediate device such as a switch or router.

When a terminal device accesses a campus network where MAC bypass authentication is deployed, the access device will first perform MAC authentication on the terminal device. If aut...

To ensure security, authentication can be configured in the OSPFv3 process area view.

Configure ipv6 preference in IS-IS protocol view. This command is used to configure the priority of IPv6 routes generated by IS-IS protocol.

In the virtualized campus network scenario deployed through iMaster NCE-Campus, as long as the FIT AP is successfully added in the "Add Device" stage, the AP can go online normally...

To use the NETCONF function on Huawei network equipment, SSH must be configured first.

In the MA network, if IS-IS is used to publish Adjacency SID, since each IS-IS router will publish Adjacency SID, there is no need to elect DIS at this time.

Single-bucket double-speed token bucket can allow short-term burst traffic, so traffic policing can have the same effect as traffic shaping after using single-bucket double-speed t...

Huawei iMaster NCE-WAN controller delivers the configuration to the CPE through the NETCONF protocol

When the BitString length is 256 bits, there can only be a maximum of 256 BFRs in the BIER field.

Enterprises can access the Internet through dial-up connections, xDSL, xPON, etc.

When designing the IGP routing of the enterprise wide-area bearer network, it should be ensured that the metric of the aggregation layer link is smaller than the metric of the acce...

In the scenario of dynamically establishing a VXLAN tunnel through BGP EVPN, the RT value carried by the BGP EVPN Type2 route is the Export RT value of the corresponding IP VPN ins...

Under the distributed gateway, VNI is divided into L2VNI and L3VNI. L2VNI is an ordinary VNI, which is mapped to the broadcast domain BD in a 1:1 manner to realize the forwarding o...

Traditional BGP-4 can only manage IPv4 unicast routing information. MP-BGP has extended BGP-4 in order to provide support for multiple network layer protocols. Among them, MP-BGP s...

In the firewall dual-machine hot backup scenario, the location, type and number of the service boards and interface cards of the active and standby devices must be the same. Otherw...

In Huawei's SD-WAN networking solution, if the Full-Mesh networking topology is used, the traffic between branch sites does not need to bypass the Hub site.

When deploying BGP/IPLS IP VPN, the VPN Route Tag of OSPF is not passed in the extended community attribute of IP-BGP. It is only a local concept and is only used by the PE that re...

In SRv6, each time it passes through an SRv6 endpoint node, the SegmentsLeft field is decremented by 1, and the IPv6 destination address information is changed times.

ICMPv6 has two types of error messages and information messages.

GRE tunnel supports enabling MPLSLDP function.

Engineers wrote an authentication application and connected it with iMaster NCE-Campus to implement Wi-Fi user Portal authentication. If the connection is successful and the user i...

Telemetry dynamic subscription means that the device acts as a server, the collector acts as a client and initiates a connection to the device, and the device pushes sampling data....

Traffic shaping can only be used in the outbound direction, and its function is to control the rate of output packets.

The iMaster NCE-Campus controller connects to various applications through open APIs in the north direction, and delivers configurations to campus network devices through Telemetry...

Since BGP is an Exterior Gateway Protocol (EGP), BGP routing policies can only be deployed between EBGP neighbors, and routing policies deployed between IBGP neighbors are invalid.

HTTP protocol message consists of three parts: starting line, header field, and body.

As shown in the figure, the network administrator can control the path of traffic entering AS100 after modifying the MED value of the routing entries sent to R2 through the routing...

The first 4 bits of the IP multicast address are fixed 1110. Corresponding to the high 25 bits of the multicast MAC address. Among the last 28 bits of the IP multicast address, onl...

In the virtualized campus network scenario deployed through iMaster NCE Campus, all devices in the site have been online. If a new device needs to be managed by the controller at t...

In the firewall dual-machine hot standby scenario, the business interface needs to be added to the security zone, and the heartbeat interface does not need to be added to the secur...

For the same MAC address, the manually configured MAC table entry has a higher priority than the automatically generated table entry.

As shown in the figure, the operator's BGP/MPLS IP VPN backbone network builds LSP through LDP. If you want to realize the BGP/MPLS IP VPN network intercommunication between the tw...

RPF has the function of preventing multicast forwarding loops.

The OPS (Open Programmability System) function of Huawei network equipment allows users to run Python scripts on their local PC and call the RESTful API interface opened by the equ...

YANG originated from NETCONF, but is not only used in NEICONF. At present, the YANG modeling language has been unified, and the YANG files have also been unified.

The public key is public and does not need to be kept secret. The private key is held by an individual and is not disclosed or disseminated to the outside world.

As shown in the figure, the OSPF protocol is deployed in a campus, and Area 1 is deployed as an NSSA area. By default, R2 automatically generates a default route for Type 7 LSA and...

In order to speed up the perception of link faults in the IS-IS network, IS-IS can be associated with BFD.

What you use the "display current-configuration" command to view is the configuration running in the memory.

The VXLAN centralized gateway centrally manages cross-subnet traffic. The deployment and management of the gateway are relatively simple, but because all terminals' ARP entries nee...

In a virtualized campus network scenario based on Huawei Cloud Campus Network Solution, the virtual network is usually divided according to the services of the campus, and independ...

iMaster NCE-Campus Insight uses SNMP technology to collect performance indicators and log data of network devices, and discovers network anomalies based on real business traffic.

In a virtualized campus network based on VXLAN, the traffic of terminals within the campus is forwarded through the VXLAN tunnel. When the campus needs to communicate with the exte...

In BGP/MPLS IP VPN, if the OSPF protocol is used to exchange routing information between PE and CE, the domain identifier (Domain ID) is used to distinguish whether the routes intr...

BGP routing policy can control the publishing and receiving of routes.

The VNI field length of VXLAN packets is 24 bits.

In small and medium-sized campus networks based on Huawei Cloud Campus Network Solution, On-Premise mode is recommended as the controller deployment mode.