[2023年更新]最新H12-891_V1.0試験問題集で最新Huawei試験合格させます
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質問 # 319
An advanced access control list is a sequence of rules consisting of permit |deny statements that can match IP messages based on which attributes ?(). Multiple select).
- A. Source address
- B. Destination port number
- C. Source port number
- D. Destination address
正解：A、B、C、D
質問 # 320
Which of the following parameters should be modified to re-establish the is-IS neighbor relationship?
- A. Modify the send interval for the IlH of the IS-IS interface
- B. Modify the Level of the IS-IS interface
- C. Modify the Cost value of the IS-IS interface
- D. Modify the IP address of the IS-IS interface
正解：B、D
質問 # 321
The existing router HWl running BGP is configured with both IBGP neighbors and EBGP tenants. The following descriptions about IBGP Neighbors and EBGP Neighbors are correct?
- A. The router sends BGP updates learned from its EBGP neighbors to its other IBGP neighbors and EBGP neighbors
- B. IBGP neighbors can establish neighbor relationships through the Loopback interface
- C. EBGP neighbors must be directly connected, otherwise, EBGP-Multi-hop must be configured with
- D. The router will have an EBGP BGP neighbor from it must be connected directly, otherwise, IBGP-Multi-hop must be configured
- E. The router sends BGP updates learned from its IBGP neighbors to its other IBGP neighbors and EPGP neighbors
正解：A、B、C
質問 # 322
The basic header length of an IPv6 message is a fixed value.
- A. TRUE
- B. FALSE
正解：A
質問 # 323
Regarding the MPLS handling mode of TTL, the following description is correct?
- A. MPLS tags in the TTL, which mean the same as the TTL domain in the IP header. TTL prevents mpLS networks from creating routing loops
- B. In MMLSVPI, if you need to hide the structure of the MPLS backbone network, you can use the Uniform mode on Ingress for private network messages
- C. In Unifor mode, when an IP message passes through an MPLS network, the inbound IPTTL is minus 1.
The MPLSTTL field is a fixed value - D. Pipe mode. When an IP message passes through an MPLS network, the IPTTL minus l at the entry point is mapped to the MPLS TTL field
正解：A
質問 # 324
In the following topology diagram,
R1 can be established between R2 and R3 fetches the Internet, RI and R2, R1 and R3 EGP connections, R2, R3 belong to the same AS The default routes are issued through BGP separately, requiring R2 to be preferred for traffic accessed by RI to the Internet, and the following practices can be achieved
- A. R1 specifies that peer R3 sets the MED property to 150 in the import direction
- B. R1 specifies the peer R2 sets the local priority in the import direction to 150
- C. R2 specifies peer R1 in the export direction setting MED property to 150
- D. R2 specifies that peer R1 is in export The direction setting local priority is 150
正解：A、B
質問 # 325
The Path Selection tool can define multiple entries, which of the following tools will automatically generate a rejection of any entries at the end of the slot
- A. Community -filter
- B. IP-prefix
- C. AS-Path- filter
- D. Route policy
正解：A、B、C、D
質問 # 326
The BSR/RP mechanism described below describes the correct determination ?( Multiple choice questions).
There can be multiple C-BSRs in the
- A. A C-BSR can also collect C-RP information by receiving C-RP packets
- B. BSR collects C-RP information by receiving packets of C-RP
- C. PIM-SM domain, but only one BSR can be elected.
- D. BSR advertises BSR and C-RP information to all routers in the PIM-SM domain via flood bootstrap messages
正解：B、C、D
質問 # 327
Which of the following options enables encapsulation and unencapsulation of VXLAN messages?
- A. VTEP
- B. VBDIF
- C. BD
- D. VLANIF
正解：A
質問 # 328
Which of the following options can affect the establishment of IBGP neighbors?
- A. Authentication is unsuccessful
- B. BGP protocol version inconsistencies
- C. IGP routing is not passable
- D. iBGP-Multi-hop is not configured
正解：A、B、C
質問 # 329
There is a new HW office that needs to use their router as a DHCP server. When configuring the DHCP server to provide DHCP services to the current office, what of the following items need to be configured?
- A. Configure the timeout period for ping packets
- B. Exclude unused IP addresses from the DHCP server
- C. Configure dhcp address pool
- D. Configure the startup file for the DHCP server
- E. Configure manual binding
正解：B、C
質問 # 330
Router RL and Router R2 run BGP both routers are in the AS65234 The router R2 route is present in the BGP routing table of router RI, but not in the P of router R1 road
- A. With BGP, both routers are in the AS65234 Route cry PD is done by the right big worker
- B. Router R1 does not enable BGPMulti-hop D Routing is not optimal
- C. The BGP neighbor relationship is Down
- D. By the table, so what causes the problem to occur? A, synchronization is turned off
正解：B
質問 # 331
IPV6 multicast introduces the concept of multicast scope, which of the following ways is the multicast scope concept implemented? Multi-select
- A. When the group shake source sends IP6 multicast data, the TTL value of the packet is set to limit the transmission range of the group shake
- B. During network configuration, the administrator uses the configuration command at the edge of the network to limit the multicast scope.
- C. Multicast scope is just a concept of spreading scope, and there is no specific technical implementation.
- D. There is a special field in the IPv6 multicast address that specifies the propagation range of multicast.
正解：B、D
質問 # 332
The following information about MPLS tags describes the error as ?( Single choice questions).
- A. The MPLS tag is 4 bytes long and encapsulated between the link layer and the network layer.
- B. If the bottom of the label identifies S=0, it indicates that the label is the bottom label and is directly forwarded to the IP.
- C. By default, devices support php features, and the ERAS node that supports PHP assigns a tag value of 3 to the penultimate hop node
- D. When the tag value is 0, the tag must be ejected and the message must be forwarded based on IPv4
正解：B
質問 # 333
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. 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
- C. In addition to the 3 port states, RSTP vice adds 2 new port roles
- 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：B
質問 # 334
If you want to advertise 19072270/27 to an EBGP neighbor, is the following command correct?
- A. network 19072270255255255240
- B. network 1907227000031
- C. network 19072270
- D. network 19072270 mask 255255255224
- E. network 19072270255255255224
正解：E
質問 # 335
An engineer performed the ingestion operation on an OSPF router in a network of the company, is the following statement about the introduction of the routing LSA correct?
- A. The Advertising Router report is set to as the Router ID of ASBR
- B. Net Mask is set to all 0
- C. Link State lD is set as the destination network segment address
- D. Using the Link State ID and Advertising Router, you can uniquely identify an LSA
正解：A、C
質問 # 336
As shown in the figure, R1, R2, and R3 run OSPP at the same time and declare their respective ring ports, as described below is the error.
- A. R2, you can use the filter po y export command to filter R3's loopback route
- B. RI, you can use the Make Efilter export command in Area 1 to filter loopback routes for R3
- C. RI can make Efilter-policy import filter the loopback route for R3
- D. R2 you can make Efilter in Area 0 The import command to filter the loopback route for R3 on
正解：A
質問 # 337
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