H12-891_V1.0 Exam Questions

SRv6 Policy can be statically configured on the device, or dynamically generated by the controller and then passed to the device.

When the client SSH logs in to a server configured with only username and password authentication, it will not go through the key exchange stage (no key will be generated).

Business Mobile carries out policy management and permission control based on the user's VLAN and IP.

When encountering a large-scale network cutover project, it can be divided into multiple relatively independent but related small cutovers.

In the virtualized campus network scenario deployed through iMaster NCE Campus, if the "automatic configuration of routing domain" function is enabled on the controller, the physic...

As a new forwarding technology, IER uses the basic IGP routing protocol and unicast routing forwarding mechanism, so that there is no need to run IGMP between multicast recipients...

VXLAN is based on UDP encapsulation, which encapsulates Ethernet data frames on UDP in IP packets, so it is called MAC in UDP encapsulation.

In the OSPF routing protocol, the asbr-summary command can be followed by the not-advertise parameter. The meaning of this parameter is not to advertise summary routes.

The request header field Accept-Language indicates the language type desired by the client.

In Business Mobile, if the authentication point device and the policy enforcement point device belong to the same device, you need to subscribe to the IP-Group entry to view the us...

When MPLS is deployed in the network and the network layer protocol is IP, the route corresponding to the FEC must exist in the IP routing table of the LSR, otherwise the label for...

Deploy switch stacking and cross-device link aggregation to achieve link reliability in small and medium-sized campus scenarios

Use the display ipinterface GE0/0/0 command to view the statistics of PING packets received on this interface.

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

The LSA header of the OSPP protocol contains multiple fields, among which the link state type (Link State Type), link state ID (Link State ID), and advertising router (Adv Router)...

In a virtualized campus network scenario deployed through iMaster NCE-Campus, to achieve mutual access between users between different VNs, the administrator can deploy a policy co...

SR-MPLS publishes labels and reserves bandwidth through extended IGP to support large- bandwidth services.

BGP/MPLS IP VPN can only use LDP to build public network tunnels.

Currently, Huawei uses the TLS protocol as the bearer protocol of the NETCONF protocol.

IP Source Guard (IPSG) is a source IP address filtering technology based on Layer 3 interfaces. It can prevent malicious hosts from forging the IP addresses of legitimate hosts to...

Congestion avoidance technology can avoid congestion on the interface.

Telemetry data must use GPB binary encoding, which makes Telemetry messages have fewer bytes and higher transmission efficiency than JSON-encoded messages.

In the small and medium-sized campus scenario of Huawei Cloud Campus Network Solution, the AR device serves as the egress gateway and supports Web network management, registration...

MPLS LDP sends a large number of messages to maintain protocol neighbor relationships and path status.

When configuring IPsec tunnels on Huawei AR series routers, you must create an IPsec tunnel interface, otherwise user data cannot be encrypted.

If public key authentication is used during the SSH user authentication phase, the public key needs to be passed to the server in advance.

In the SR network, if IS-IS is used to transmit SID, by default the Node SID advertised by the Level -2 router is only transmitted within the same area.

For the Telemetry device side, the Telemetry encoding format supports both GPB encoding and JSON encoding.

For Telemetry data push, devices and collectors can implement secure data push based on the TLS protocol. If Telemetry uses gRPC to push data, TLS must be used.

In a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, when a BGP EVPN route is transmitted between VTEPs, the BGP EVPN route will be discarded only when t...

By default, LSP establishment is triggered between LDP adjacencies based on IP routes with 32- bit addresses.

In 6PE and 6VPE networking modes, there is no need to create a VPN instance on the PE device.

In Huawei's SD-WAN networking solution, the topology of different VNs must be consistent.

ESI (Ethernet Segment Identifier) has a total length of 10 bytes and is unique within the entire network.

In small and medium-sized campus scenarios, switch stacking and cross-device link aggregation can be deployed to achieve link reliability.

Engineers often log in to the device remotely to check the device status. Now the engineer hopes to implement automatic remote login through Python scripts. You can use the Python...

After executing the reset isis all command, the IS-IS protocol process needs to be restarted and neighbors need to be re-established, but various IS-IS statistics will not be clear...

VXLAN uses VNI to distinguish tenants. A tenant can have one or more VNIs. The VNI length is 24 bits, so VXLAN supports up to 12 M tenants.

iFIT supports the measurement of end-to-end service packets to obtain performance indicators such as packet loss rate and delay of real service packets in the IP network.

Protobuf stands for protocolbuffers. It is a language-independent, platform-independent, and extensible method of serializing structured data. It can be used for data communication...

In a virtualized campus network based on VXLAN, the Edge node is the boundary point where business data enters the VN from the physical network. The Edge node will send data to dif...

In Huawei's SD-WAN solution, the CPE will automatically select the RR after it goes online, and does not require the participation of the iMaster NCE-WAN controller.

The design specifications of the RESTful interface have been defined in the RFC8040 standard.

As shown in the figure, the OSPF protocol is enabled on all interfaces of the router, and R4 and R5 can establish OSPF virtual connections.

In order to prevent hackers from attacking user equipment or networks through MAC addresses, the MAC addresses of untrusted users can be configured as blackhole MAC addresses to fi...

IPsec uses an asymmetric encryption algorithm to encrypt a symmetric algorithm key, and uses a symmetric algorithm key to encrypt/decrypt data, ensuring security while taking into...

Using BGPE VPN as the control plane of VXLAN can completely avoid traffic flooding in the VXLAN network, such as ARP broadcast messages.

In the controller public cloud deployment scenario, if you use Huawei registration query center for deployment, you do not need to configure DHCP Option 148 on the campus DHCP serv...

In Huawei Cloud wide area network solution, the controller can plan traffic paths based on real- time network performance and deliver path information through PCEP or BGP-LS.

IGMPv3 not only supports the general group query of the IGMPv1 version and the specific group query of the IGMPv2 version, but also supports the specified source/group query of the...