Free H12-891 Exam Dumps Preview

In the Huawei CloudCampus Solution, which of the following devices can go online through the registration query center? (Choose four)

Which of the following functions can be provided by iMaster NCE-Campus when it functions as a relay agent for authentication? (Choose three)

NAFTIR policing can only be applied to the inbound direction. Its purpose is to monitor the traffic entering the device and ensure that the upstream device does not unnecessarily consume network resources.

BGP Link State (BGP-LS) introduces a new NLRI into BGP. The NLRI carries link, node, topology prefix, and other information, and is also referred to as the link state NLRI.

Which of the following IEEE standards is specific to Gigabit Ethernet? (Choose two)

If multiple candidate RPs are configured for a multicast group, which of the following parameters must be compared when electing the RP for that group? (Choose three)

Which of the following descriptions of CBWFQ is correct?

Refer to the following command output on router R3. Which of the following statements are correct? (Choose three)

<R3> display interface Tunnel
Tunnel0/0/0 current state : UP
Line protocol current state : UP
Last line protocol up time : 15:21:26 UTC-08:00
Description: HUAWEI, AR Series, Tunnel0/0/0 Interface
Route Port, The Maximum Transmit Unit is 1500
Internet Address is 20.1.1.2/24
Encapsulation is TUNNEL, loopback not set Tunnel source 10.0.3.3 (LoopBack0), destination 10.0.1.1
Tunnel protocol/transport GRE/IP, key disabled
keepalive disabled
Checksumming of packets disabled

VLAN-based MAC address flapping detection is configured. If MAC address flapping occurs, actions to be taken on an interface can be configured as required.

Which of the following actions cannot be configured?

On a broadcast network, if the DR priorities of two interfaces connecting two routers are set to 0, in which of the following states will the OSPF neighbor relationship stay?

SR-MPLS is enabled on all routers in the network. The figure shows the label stack that R1 encapsulates into a data packet before forwarding it.

Based on the SR-MPLS label information, which of the following is the actual forwarding path of the data packet?

The interface Serial0 of an existing router is in OSPF area 1, and the interface Serial0 is set to Silent interface.
So what kind of impact will this setting have?

To reduce the number of OSPF routes in certain areas, the OSPF protocol has developed special area functions.

Which of the following statements correctly describes the characteristics of OSPF special areas?

Which of the following statement about ISIS (IPv6) is correct? (Choose three)

Which of the following statements about the NSSA (Not-So-Stubby Area) in OSPF is correct?

Huawei Open Programmability System (OPS) uses HTTP methods to access managed objects to manage network devices. To facilitate script compilation, Huawei OPS provides the Python script template.
In the Python script template, what are the contents of the Content-type and Accept fields in the header of an HTTP request packet?

Regarding the LDP protocol session establishment process, which of the following descriptions is correct? (Choose three)

To obtain the token ID of iMaster NCE, you need to send an HTTP request message that includes the following Python code to invoke an iMaster NCE RESTful API:

import requests
nbi_name = "[email protected]"
nbi_pwd = "CgocVcVe1@"
host = "139.9.213.72"
port = "18002"
URI = "/controller/v2/tokens"
post_token_url = "https://" + host + ":" + port + URI
headers_post = {"Content-Type": "application/json", "Accept": "application/json"}
r = requests.post(post_token_url, headers=headers_post,
json={"userName": nbi_name, "password": nbi_pwd},
verify=False)

Which of the following statements is incorrect?

Which BGP messages will include BGP Keychain authentication information? (Choose four)

As shown in the topology diagram, all router interfaces in the figure have ISIS enabled.

Which of the following statements is correct? (Choose three)

What categories can ACLs be divided into? (Choose three)

Which of the following inter-AS MPLS L3VPN solutions need VPN user data packets to carry MPLS labels when being forwarded between ASs? (Choose two)

Which of the following scenarios is not suitable for deploying interface policy routing?

IPsec SAs can be established in either manual mode or IKE auto-negotiation mode.

Which of the following statements about the two modes is incorrect?

The free mobility function is deployed on the iMaster NCE-Campus on a campus network.

Which of the following information should an administrator pay attention to? (Choose four)

Based on the following SR-MPLS database information:

Prefix-SID: 100

SRGB Base: 40000

Which MPLS label will PE2 use to forward traffic destined for 10.0.1.1?

In the following figure, R1, R2, R3, and R4 all belong to OSPF area 0. The link costs are marked in the figure. The Loopback0 addresses of R1, R2, R3, and R4 are advertised to OSPF. R1, R2, and R3, which are R4 clients, use Loopback0 to establish an iBGP peer relationship with R4. The directly connected network segment 172.20.1.4/32 of R4 is advertised to BGP.

Which of the following statements are correct about the direction of traffic from R1 to 172.20.1.4/32? (Choose two)

The router connects two EBGP neighbors through two parallel Serial cables.

What should you do to achieve bidirectional load sharing between the two EBGP neighbors connected by these parallel Serial cables?

OSPFv2 is an IGP running on IPv4 networks, whereas OSPFv3 is an IGP running on IPv6 networks.
OSPFv2 and OSPFv3 have similar LSA types, but their LSA functions are slightly different.

Which of the following is not an OSPFv3 LSA type?

As shown in the figure, what is known about the default routes on R4?

Routing Table on R4:

<R4> display ip routing-table protocol isis

Destination/MaskProtoPreCostFlagsNextHopInterface

0.0.0.0/0 ISIS-L115 10 D10.1.24.1GigabitEthernet0/0/1
0.0.0.0/0 ISIS-L115 10 D10.1.34.1GigabitEthernet0/0/0
172.16.1.2/32 ISIS-L115 10 D10.1.24.1GigabitEthernet0/0/1
172.16.1.3/32 ISIS-L115 10 D10.1.34.1GigabitEthernet0/0/0

Which of the following statements about prefix segments and adjacency segments are correct? (Choose two)

When DLDP detects the presence of a one-way link in the fiber, the default actions of Huawei equipment include the DLDP state machine migrating to the Disable state, output Trap information, and automatically set the interface to a blocked state.

DRAG DROP

To deploy a virtual campus network using iMaster NCE-Campus, several steps must be performed. From top to bottom, sort the steps in the order in which they occur during network deployment and management.

Firewall security policies have the following conditions for traffic matching: (Choose three)

iMaster NCE-Campus restricts RESTful APIs.
If a client sends a GET request that invokes a RESTful API to obtain site information from iMaster NCE-Campus, which of the following fields should be included in the request header?

An LSR supports various label retention modes.

Which of the following statements regarding the liberal mode are correct? (Choose two)

Which of the following are potential risks in HTTP communication? (Choose three)

Which of the following statements about IS-IS (Intermediate System to Intermediate System) are correct? (Choose three)

Which of the following statements correctly describe the IPv6 Solicited-Node address?

As shown in the figure, the neighbor relationship between R1 and R2 has just been established.

Which of the database synchronization process between R1 and R2 is correct?

Which of the following intelligent traffic steering policies can be used to fully utilize link bandwidth and implement link bandwidth-based load balancing on an enterprise network with multiple links?

Which of the following headend behaviors can insert SRHs into IPv6 packets? (Choose three)

Which of the following descriptions about the attributes of BGP is correct?

Free mobility implements policy management and permission control based on users' VLAN IDs and IP addresses.

When the ACL in VRP has multiple matching rules, which of the following statements about the matching order is correct?

Node segments in SR-MPLS must be manually configured.

Which of the following is the type of northbound API used by iMaster NCE-WAN?

On the campus network shown, IPv6 is deployed for service tests. Four routers are deployed on the network, and these routers use OSPFv3 for network connectivity.

Which of the following statements about LSAs generated by the OSPFv3 network is incorrect?

Which of the following description about the BGP route reflector is correct? (Choose two)

When a client invokes the iMaster NCE-Campus RESTful API, it sends an HTTP request. The server then returns the status code 401.

Which of the following errors has occurred?

What does the RT (Route Target) do in an MPLS VPN? (Choose two)

OSPF is a mature protocol and is unlikely to have route computation errors in a regular networking environment under correct configurations.

Which of the following statements are correct about the possible causes preventing an OSPF neighbor relationship from entering Full state? (Choose four)

In BGP4+, what is the content of the next hop network address field carried in the MP_REACH_NLRI attribute of an Update packet?

When deploying BGP/MPLS IP VPN, OSPF's VPN route tag is not present. The extended attributes of MP-BGP are passed only locally and are meaningful only on routers that receive MP-BGP routes and generate OSPF LSAs.

The BGP ORF function can be used to control the maximum number of routes that can be sent by a BGP peer.
To achieve this, which of the following tools is used to send such a route list to BGP peers?

The main routing policy tools that BGP can use are Filter-policy and Route-policy. Filter-policy can only filter routes, whereas Route-policy can both filter and modify routes.

Which of the following descriptions about OSPF virtual links is correct?

Which of the following statements are correct? (Choose two)

If the topology of the entire network does not change, but the allocation of IP segments in the router changes, ISIS only uses PRC to calculate the changed routing information and does not recalculate the entire SPT.

Cross-device link aggregation enables back-to-back transmission of data traffic and provides redundancy for the stack member switches. However, due to the limited bandwidth of the stack cable between the devices, the forwarding efficiency can be improved in the following ways:

Congestion management technology can be used to discard data packets in the buffer queue to prevent the buffer queue from being exhausted.

With telemetry, certain data can be sampled based on specific sampling paths.

Which of the following sampling paths are supported by telemetry? (Choose three)

The authentication types of IS-IS include interface authentication, area authentication, and domain authentication.

What is the significance of reserved multicast address 224.0.0.0 ~ 224.0.0.255?

There is no routing protocol running on the router HW, and only one default route reaches the remote network. On the router, when trying to ping the remote file server address 105.40.1. The result of the ping on the router job is presented as "Request Timed Out."
Based on the above description, which of the following analysis is incorrect?

If a Huawei S series switch needs to designate a member switch as the primary switch of the stack, it can power on this switch first, and then power on other member switches after 20s.

Which of the following scenarios send gratuitous ARP messages? (Choose three)

In Huawei SD-WAN Solution, which of the following tunneling technologies is used to establish data channels? (Choose two)

Huawei Open Programmability System (OPS) uses standard HTTP methods to access managed objects to manage network devices.

Which of the following HTTP methods is used to configure the value of a network device's managed object?

ICMPv6 has two types: Error Messages and Informational Messages.

Based on the following IS-IS peer output, what can be determined?

Peer information for ISIS(1): Peer System ID: ee8c.a0c2.baf3
Interface: GE0/0/0
State: Up

HoldTime: 7s
Type: L1
PRI: 64
MT IDs supported: 0(UP), 2(UP)
Local MT IDs: 0, 2
Area Address(es): 49.0022
Peer IP Address(es): 10.1.34.1
Peer IPv6 Address(es): FE80::2E0:FCFF:FE98:2576

The NETCONF content layer contains device configuration data. Consider the following NETCONF configuration:

<?xml version="1.0" encoding="UTF-8"?>
<rpc xmlns="urn:ietf:params:xrnl:ns:netconf:base:1.0" message-id="801">
<edit-config>
<target>
<running/>
</target>
<default-operation>merge</default-operation>
<error-option>rollback-on-error</error-option>
<config xmlns:xc="urn:ietf:params:xml:ns:netconf:base:1.0">
<vlan xmlns="http://www.huawei.com/netconf/vrp/huawei-vlan">
<vlans>
<vlan>
<vlanId>10</vlanId>
<protocolVlans>
<protocolVlan xc:operation="merge">

<protocolIndex>0</protocolIndex>
</protocolVlan>
</protocolVlans>
</vlan>
</vlans>
</vlan>
</config>
</edit-config>
</rpc>

Which of the following statements are correct? (Choose three)

Port isolation technology deployed in Ethernet can realize Layer 2 interoperability and Layer 3 isolation,
making networking more flexible.

Which of the following statements about BIER (Bit Index Explicit Replication) and PIM (Protocol Independent Multicast) are correct? (Choose three)

On a small-or medium-sized campus network deployed based on the Huawei CloudCampus Solution, an AR functioning as the egress gateway supports web-based network management, registration center query, and DHCP Option 148- based deployment, but does not support CLI-based deployment.

BGP EVPN performs MAC address advertisement, ARP message advertisement, and IRB route advertisement through which BGP EVPN route type?

For telemetry data push, data can be transferred between devices and collectors using the TLS protocol.
TLS must be configured for data encryption if data is pushed based on gRPC.

In the CloudCampus public cloud scenario, if deployment through the Huawei registration query center is used, you do not need to configure DHCP Option 148 on the DHCP server of the campus network.

Regarding the domain-authentication-mode md5 hello command in the ISIS process, which of the following explanations is correct?

In BGP4+, what is the content of the next hop network address field carried in the MP_REACH_NLRI attribute of an Update packet?

Which of the following statements about the VRRP protocol are correct? (Choose three)

Which of the following statement about the application of BFD is correct? (Choose four)

If a Huawei switch runs the RSTP protocol, when will the BPDUs on a port on the switch be aged?

Refer to the exhibit.

Which of the following steps are mandatory to enable 802.1X authentication on GE0/0/2 and GE0/0/3 of SW3 and configure a RADIUS server to authenticate and deliver network access rights to users? (Choose four)

As shown in the following figure, R1, R2, and R3 establish a Level 2 neighbor relationship.

Which of the IP routing table for R3 is correct? (Choose four)

Python Paramiko implements the SSH protocol.
In the Python Paramiko module, which of the following classes is used to create SFTP sessions and perform remote file operations?

In Huawei's NAC solution, which of the following cannot be used for Portal authentication?

A router Router-LSA is shown below. Which of the following statements is incorrect?

<Huawei> display ospf lsdb router self-originate

OSPF Process 1 with Router ID 10.0.12.1
Area: 0.0.0.0

Type: Router
Ls id 10.0.12.1
Adv rtr : 10.0.12.1
Ls age 312
Len 36

The firewall has created some security zones by default.

Which of the following security zones does not exist by default on the firewall?

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

Which of the following information about BGP4+ is correct? (Choose two)

As shown in the following exhibit, an engineer tests network interconnection between two branches. To implement network interconnection, OSPF is deployed on R1, R2, and R3 of branch 1, and IS-IS is deployed on R2, R3, and R4 of branch 2.

Which of the following operations needs to be performed to allow R1 to access R4's loopback interface address?

Which of the following descriptions of MPLS BGPVPN is incorrect?

During the migration test, which of the following indicates that the test is completed?

In OSPFv3, which of the following types of LSAs can be flooded in the entire AS?

DRAG DROP

Drag the IPsec functions on the left to the corresponding function description on the right.

Which of the following statements about the IGMP proxy is correct? (Choose three)

As shown in the topology, EBGP is running between AS100, AS200, AS300, and AS400, and the neighbor relationships are established accordingly.

When AS400 receives a BGP route for the 1.1.1.1/32 network segment originating from AS100, which of the following AS_Path sequences is correct?

Which of the following options use an alternate channel to enable communication between IPv6 addresses? (Choose two)

What messages does an NMS (Network Management Station) running SNMPv1 send to the agent?