更新された2023年11月08日 H12-891_V1.0試験問題集でPDF問題とテストエンジン
最新（2023)Huawei H12-891_V1.0試験問題集
質問 # 38
What information does the BGP Open message carry as follows?
- A. BGP Router ID
- B. Route attributes
- C. Local Autonomous System (AS) number
- D. Hold time
正解：A、C、D
質問 # 39
The following statement about IPSG technology is correct (single choice).
- A. The ip source checkuser-bind check-item command is used to configure VLAN- or interface-based IP packet checks, which take effect for both dynamic and static table entries.
- B. If an interface is configured as the OKCP Scooing Tust interface, the interface can normally receive DHCP ACK and DHCPNAK responded to by the OHHNP server and DHCPOffer packets, other untrusted ports cannot receive these packets properly.
- C. The IPSG can perform binding table match checks on IP packets entering and leaving the interface.
- D. On Huawei routers, ipSG functions can be configured in Vlanif.
正解：B
質問 # 40
A company network runs the OSPF protocol, a project in order to understand the OSPF mechanism in the network to perform packet transfer operations, the following description of ospf messages is correct?
- A. The interface sends a Hello packet immediately after joining the OSPF region
- B. LS update packet is sent only when the adjacency relationship is established
- C. When an LsUpdate packet is received, the router must send an LsAck acknowledgment
- D. LS update packet synchronizes the link state database by sending detailed LSA information
2
正解：A、D
質問 # 41
What parameters can the DHCPv6 server assign to DHCPv6 clients?
- A. SNTP server address
- B. Gateway address
- C. DNS server address
- D. IPv6 address/prefix
正解：A、B、C、D
質問 # 42
As shown in the figure, three switches SI, SN2, and SN3, where SN1 is the root bridge between S1 and SN2 Now that link support SN2 cannot receive the configuration BPDU sent by the root car, the administrator needs to configure which spanning tree protection mechanism to prevent the problem of link congestion?
- A. BPD protection
- B. root protection
- C. Anti-TC-BPDU attack
- D. Loop protection
正解：D
質問 # 43
In cross-domain VPN-OptionB packet forwarding, two ASBRs exchange the same LSP tags once.
- A. False
- B. True
正解：A
質問 # 44
Protocols with TCP ports 443, 179, 137, 110, and 23 are, in order: radio
- A. Finger,DHCP Server,NetBios Name Server,POP3,TelnetB
- B. HiPS,BGP, NetBios Name Server ,POP3,TelnetE. BGP,POP3,SNMP,TFTP,Teinet
- C. LDAP,SNMP,TFTP,POP3,Telnet
- D. HTTPS,SNMP,POP3,DNS ,Telnet
正解：B
質問 # 45
The following description of LDP reliability is incorrectly ?( Radio).
- A. Manually configured LDP FRR policies default to 32-bit backup routes that trigger LDP to establish backup LSPs
- B. LDP and IGP linkage, the need for IGP has been routed to release, to ensure that LDP and LGP path consistent
- C. LLDPFRR also allows LSPs to be generated for tag mappings from non-optimal next hops, and as a live LSP backup, supervising forwarding table entries
- D. LGP GR takes advantage of the high difference between the LS forwarding plane and the control plane to realize that the device forwards without interruption when the protocol is restarted or the master-standby is reversed
正解：A
質問 # 46
If all the public IP addresses are used by a company's intranet users to access the Internet using NAT's No-pat method, what will happen to subsequent intranet users who access the Internet?
- A. automatically switch NAT to PAT after the Internet
- B. Synchronize messages to other NAT conversion devices for NAT conversion
- C. Squeeze out the previous user and force NAT conversion to go online
- D. Subsequent intranet users will not be able to access the Internet
正解：D
質問 # 47
What are the ways to divide VLANs in Huawei switches? ( Multi-select)
- A. Partitioning based on port
- B. Division based on MAC address.
- C. Division based on QoS
- D. Division based on protocol
- E. Subnetting based on IP.
正解：A、B、D、E
質問 # 48
By default, routers running IS-IS in broadcast networks have a period of seconds for DIS to send CSNP packets?
- A. 0
- B. 1
- C. 2
- D. 3
正解：D
質問 # 49
As shown in the following topology, EBGP is running between AS100, AS200, AS300, AS400, and the neighbor relationship is established S400 When you receive a BGP route from ASI00 for a 1.1.1.1/32 network segment, is the path order recorded in the ASPath properties correct?
- A. 100, 200,300, 400
- B. 400,300,200,100
- C. 300, 200,100
- D. 10,200,3
正解：C
質問 # 50
MPLS does not enable the secondary unsubject pop-up, the penultimate hop label can be the same as
- A. TRUE
- B. FALSE
正解：B
質問 # 51
Which of the following default routing delivery methods does OSPF support?( Multi-select)
- A. Answer can be issued on ASBR
- B. Can be issued on ABR
- C. Issuance can only be enforced
- D. It can be issued without force
正解：A、B、D
質問 # 52
When running OSPFv3 on a Huawei router, the OSPFv3 process automatically selects an interface address as the process router id
- A. False
- B. True
正解：A
質問 # 53
Which of the following options enables encapsulation and unencapsulation of VXLAN messages?
- A. VBDIF
- B. BD
- C. VLANIF
- D. VTEP
正解：D
質問 # 54
Regarding Policy Routing, the following description error is ?( Single choice questions).
- A. If the message matches the permit table entry in the interface policy route , the message must be forwarded according to the next hop specified by the interface policy route
- B. Interface policy routing is only supported for application in the inbound direction of an interface.
- C. Interface policy routing only takes effect for forwarded packets, but has no effect on packets sent locally.
- D. When configuring local policy routing, if two next hop and two outbound interfaces are set in the policy at the same time, packet forwarding only distributes the load between the two outbound interfaces.
正解：A
質問 # 55
Although the STP protocol can solve the loop problem, it affects the quality of user communication due to the slow convergence of the network topology. RSTP has made many improvements to STP, which of the following is not an improvement of RSTP to STP?
- A. RSTP port state specification is divided according to whether the port forwards user traffic and learns the MAC address, reducing the original 5 port states to 3
- B. In addition to the 3 port states, RSTP vice adds 2 new port roles
- C. If a port does not receive a configuration BPDU sent by the upstream device for 4 consecutive Hello Time, the device considers the negotiation with this neighbor to fail
- D. Non-root switches running RSTP send configuration BPDUs at intervals specified by Hello Timer, a behavior that is entirely autonomous for each device
正解：C
質問 # 56
The following statement about the alliance is correct?( Single choice questions).
- A. The consortium divides an AS into sub-AS, and the alliance external AS still considers the consortium to be an AS
- B. Consortium can easily detect the routing loop within the AS because EBGP is running between the subAS.
- C. Subsystems within a consortium can use private AS numbers. Huawei NE/AR routers, a consortium can be configured with up to 32 subsystems
- D. The subas number of the consortium, which by default notifies BGP peers outside the consortium
正解：D
質問 # 57
Which of the following configurations for OSPFv3 route aggregation is correct?
- A. [Huawei]ospf3 1 [Huawei-ospv3-1]area 1 [Huawei-ospf3-1-area-0001] abr-summary fo0:0 0:48 cost
400 - B. [Huawei] ospfs 1 [Huawei-ospf3-1] asbr-summary fcO0:O:0:.48 cost 20 tag 10o
- C. [Huaweijinterface gigabitethernet 1/0/0[Huawei-GigabilEthemnet1 / 0/0] asbr-summany fcOO:0048 cost 20
- D. Huawei]ospv3 1 [Huawe-ospt/3-1]area 1 Huawei-osph3-1-area-0001]asbr-summary fc000:048 cost 20 tag 100E. [Huawei] ospfv3 1 [Huawei-ospfv3-1] abr-summary fc000:0;. 48 cost 400
正解：A
質問 # 58
If the OSPP protocol is running in the network , after configuring the non-backbone area in the OSPP area as the Totally Stub region, the ABR router sends a message to Totally. The Stub region issues an LSA with an LS ID of 0000, and what type of LSA is the LAS to?
- A. LSA5
- B. LSA3
- C. LSA2
- D. LSA1
正解：B
質問 # 59
Regarding the OSPFv3 protocol, what is the error described below?
- A. Can support running multiple instances on a single link
- B. Multiple instances can be run in the same OSPFv3 under the same interface
- C. Under the sukugan of a shared router, each OSPFv3 process runs independently
- D. OSPFv3 message header will contain instance IDFu Duan flogging
正解：B
質問 # 60
??? aggregate ipv4-address { mask/masklength }[as-set lattribute-policy route-policy-namel ldetail-suppressedlorigin-policy route- in policy-name2[suppress3policy route-policy-name3], multiple parameters can be used to influence summary routes and their results. The correct description about the command is ?( Multiple choice questions).
- A. If Origin-policy is configured, only detail routes that match Route-policy can participate in aggregation
- B. If Suppress-policy is configured, aggregate routes are also generated, and the if-match clause in Route-policy is used to pick suppressed detail routes. Detail routes that match Route-policy are still advertised to other BGP neighbors
- C. If As-set is configured, the A S_PATH of the aggregate route contains ass path information for all specific routes in case the route loop is blocked
- D. If You configure The Interface-policy, you can change the properties of the aggregate route
正解：A、C、D
質問 # 61
As shown in the figure, in the HUB & Spoke networking mode of MPLS BGPVPN, in order to achieve the division can only communicate with the headquarters, the division can not communicate with each other When setting up RT, which of the following scenarios is this?( Radio).
- A. import Target:12:3EpodTarget:12:3
- B. Headquarters: Impot Target:2:2; Expor Target:3:3
- C. Headquarters: importTarget: 12:3EpodTarget: 3:12
- D. Headquarters: importTarget:1:1EpodTarget:3:3
正解：C
質問 # 62
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