最新版無料体験を掴み取れ！Huawei H12-891_V1.0問題集PDFは更新されたのは2023年
最新リリースのH12-891_V1.0問題集はHuawei Certified ICT Expert認証済みです
質問 # 46
As shown in the figure, all routing diagrams declare the loopback address in OSPF, where R2 does not return the address is 10022/32, it is advisable to tell AraD. The R3 loopback address is 10033/321001.1.0/24 external routing, in order to reduce the burden on the RI router, the configuration command is as follows:( Multiple choice questions)[Rlip ip-prefix 1 permit 001.1.024 [RLIJospfl [RL-ospf-1]filter-policy ip-prefix l import please ask the following description is correct?
- A. In the IP routing table of router R1, there is no loopback route to R2
- B. In the IP routing table of router R1, there is an external route to 1001.1.0/24
- C. In the IP routing table of router RI, there is no loopback route to R3
- D. In the P route table of router R1, there is no external route to 1001.1.0/24
正解：A、C、D
質問 # 47
What messages can Huawei equipment suppress traffic for?
- A. Multicast
- B. Known unicast
- C. Broadcast
- D. Unknown unicast
正解：B、C、D
質問 # 48
Is the following description of the OSPFv3 message correct?
- A. The LSACK message contains LSA header information to confirm the receipt of LSU packets
- B. Hello messages and the Option field for DD messages extends to 24-bit
- C. The interface ID of the sending interface must be included in the A Hello packet
- D. The LSR message contains the complete LSA header information for requesting an update to the LSA
正解：A、B、C
質問 # 49
In the use of the CP protocol, the following description is correct?
- A. Source A address can be configured for load sharing in an enabled link aggregation group with the following command: interface eth-trunk 110ad-balance src-dst-ip
- B. A member interface can be removed from an enabled link aggregation group with the following command: interface GigabitEthernet0/0/1 shutdown interface GigabitEthernet0/0/1 undo eth-trunk 1 interfaceGigabitEthernet0/0/1undoshutdown
- C. The member interface can be joined in the link aggregation group by enabling the following command: interface GigabitEthernet0/0/1 shutdown interface GigabitEthernet0/0/1 trunkport
- D. The Eth-Trunk interface can be avoided by frequent oscillation interfaceeth-trunkllacppreemptenablelacppreemptdelaydelay-time by following command
正解：D
質問 # 50
As shown in the figure, the PPP link between R1 and R2 is not in the same network segment, but the R1 and R2 direct connectors can communicate, and the Ethernet link cannot communicate under the same planning, why?
- A. The interconnect POS port of RI and R2, through LCP learns the MAC address of the opposite termination , does not need to use ARP to request the MAC address
- B. The interconnect POS ports of R1 and R2 learn the 24-bit subnet route of each other's direct connection ports through IPCP
- C. The data packets of the interconnect POS ports of R1 and R2 do not need to encapsulate ethernet headers and do not need to use ARP to request MAC addresses
- D. The interconnect POS ports of R1 and R2 learn the 32-bit host route for each other's direct connections through IPCP
正解：C、D
質問 # 51
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. 10,200,3
- B. 100, 200,300, 400
- C. 400,300,200,100
- D. 300, 200,100
正解：D
質問 # 52
In a network, the same gigabit running S and OSPF anti-tampering and fluttering as shown in the figure, on the two border routers RTB and RTC are introduced into the wine route, the device question is to use gigabit one port strobe, , 222 The network is introduced into the OSE via impotrote direct on the RTD, assuming that all other configurations are dead default configurations, then the description of this network is wrong ?
- A. On the RTC, the following configuration is adopted, only the routes of the 2222/32 cinder segment can be filtered out when routing is introduced, IRTClip ip-prefix 10 index 1 deny2000 8 less-equal 32
- B. The following configuration can filter out the routes of the 2/32 CIDR block of the white RTD when RTC introduces OSPF routes.
- C. Adjusting the ISIS priority to 160 on the RTB avoids suboptimal routing problems in the network.
- D. RTB learns that the routing next hop for the 2/32 network segment is RTA
正解：A
質問 # 53
The following description of BGP ring protection is correct
- A. Any routing information from the IBGP peer is advertised to the other IBGP peers
- B. BGP routers that are not RR do not announce any updates from the IBGP peer to other IBGP peers
- C. The BGP router does not announce any updates from the EBGP peer to other EBGP peers
- D. , through the AS-path attribute, discard any update information received from the EBGP peer that contains its own AS number in the AS-path attribute
正解：B、D
質問 # 54
The correct description of the scene shown in the following figure is:
- A. R there is a route to R2 loopback0 100
- B. R1, which exists in both Level-1 and Leve-2, can ping the interface address of R2 loopback0
- C. LSDB
- D. No neighbor relationship can be established between R1 and R2
正解：A、C、D
質問 # 55
The OSPF3 protocol is a separately developed protocol that differs somewhat from OSPF2 in that OSPFv3 is link-based rather than network segmented, and the following statement is incorrect?(). Single choice questions).
- A. Two OSPF routers connected to the link can establish a neighbor relationship even if their IPv6 address prefixes are different
- B. All OSPFv3 interfaces use the Link-Local address as the destination address of the message
- C. The routing information obtained by the OSPFv3 router from the neighbor uses the neighbor's Link-Local address as the next hop in the forwarded packet
- D. For two OSPF routers connected to the link, you can establish a neighbor relationship even if you do not configure a unicast IPv6 address
正解：B
質問 # 56
Deploying the ISIS protocol in an IPv6 environment is true in the following statement (radio).
- A. IS-IS sient is configured under the finger port, this interface will not send ISIS packets, but will receive ISIS packet
- B. In the same broadcast network. If each router supports both IPV4 and Pv6, the DISC of JPV4 and Pv6 must be the same device
- C. By default, the DIS priority of broadcast network interfaces at Level-1 and Level-2 is 1 B In broadcast networks, the DIS priority for IPV4 and IPV6 can be set separately
正解：A
質問 # 57
In a network in MPLSVPN, different CE devices can exchange routing information with the same PE device using different routing protocols, and different CE devices can exchange routing information with the same PE The routing protocols used between devices are independent of each other
- A. False
- B. True
正解：B
質問 # 58
How many bits are there in the label field of MPLS ?
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
質問 # 59
In OSPFv3, Router-LSA is generated by each router, which describes the interface address and cost of the router's links, as well as the RouteriD of the neighbor router.
- A. False
- B. True
正解：A
質問 # 60
The following statement about IPSec VPN is correct
- A. Two routers establish an IPSec VPN in brutal mode, so that the tunnel is built with a minimum of 4 messages interacting between the two devices.
- B. The two routers can establish an OSPF neighbor relationship through the IPSec VPN (19) channel and exchange intranet devices by
- C. Brutal mode can support NAT traversal, while main mode does not support NAT traversal.
- D. The two routers establish IPSecVPN in main mode, and from the 5th message (included), the payload's data is often encrypted.
正解：B、D
質問 # 61
The address resolution feature for NDP in the following description is incorrect?
- A. of the local interface Two types of ICMPv6 messages,
- B. When sending a neighbor request packet, the destination address must be the multicast address of the neighbor's requested node
- C. are used in the address resolution process, neighbor request and neighbor advertisement Address resolution implements the ability to resolve from IPv6 addresses to link-layer addresses
- D. When sending a neighbor request packet, the source address-is set as the link-local address
正解：D
質問 # 62
OSPFV is the GP running on the P4 network) OSPF3 is the KGP running on the IP6 network. OsPFV works the same basic way as OSPF2, such as elections for DR and BDR. As shown in the figure, an engineer uses three routers for IP6 service testing, and he wants to interconnect the IPv6 network by running OSPFv3 Which of the following statements is correct regarding the election of the network DR?
- A. After the network converges, R1 is DR
- B. After the network converges, R1 is powered off and restarted, and when the network converges again, R3 is DR
- C. After the network converges, the broadcast link adds a device, R4, with a priority of 150 When the network converges again, R4 is DR
- D. After the network converges, the engineer modifies the priority of R1 to 100, the priority of R2 to 10, and R3 to the default value. When the network converges again, Rl is DR and R2 is BDR
正解：B、C、D
質問 # 63
Regarding the sliding window of TCP, what are the following descriptions that are enough to be wrong? ( Multiple choice question)
- A. The sender declares the initial window size
- B. Sliding window size can only be increased or remain unchanged
- C. The TCP sliding window allows multiple packets to be sent before an acknowledgment is received
- D. The receiver needs to acknowledge the sender's packet
- E. The sender does not need to transmit messages of full window size
- F. After the retransmission timer times out, the sender has not received an acknowledgment and will retransmit unacknowledged data
正解：A、B
質問 # 64
In route-policy, what are the BGP attributes that can be used for the apply clause?
- A. MED
- B. Local-Preference
- C. Day
- D. AS-Path
正解：A、B、D
質問 # 65
If a Huawei switch runs the RSTP protocol, when will the BPDUs on a port on the switch be aged?
- A. after the Forward Delay timeout
- B. After Hello time times out
- C. After Ma ge times out
- D. On the interface, RSTP does not age BPDU
- E. After more than 6 seconds
正解：C
質問 # 66
What categories can ACLs be divided into?
- A. User-defined ACLs
- B. Basic ACL
- C. Two-layer ACL
- D. Advanced ACLs
正解：A、B、C、D
質問 # 67
In a multicast network running PIM-SM mode, how does the router choose the upstream interface?
- A. Interface for sending PIM Heilo messages.
- B. Find the outbound interface corresponding to the mapping proxy in the unicast routing table
- C. looks up the outgoing interface corresponding to the RP address in the unicast routing table
- D. The interface that is fast to the PIlM Join message
- E. Interfaces to which multicast group members are directly connected
正解：C
質問 # 68
The firewall has created some security zones by default, which of the following security zones does not exist by default on the firewall?( Radio).
- A. Internet
- B. Local
- C. Trust
- D. DMZ
正解：A
質問 # 69
OSPFv2 is an IGP running on an IPV4 network; OSPFV3 is an IGP running in an IPV6 network IGP, OSPFv3 in the network has a similar LSA type compared to OSPFV2, but the functionality is slightly different, osPFv3LSA type does not include which of the following?
- A. Router-LSA
- B. AS-external-LSA
- C. Network-LSA
- D. Asbr-summary-LSA
正解：D
質問 # 70
Traditional BGP-4 can only manage IP4 unicast routing information, and MP-BGP extends BGP-4 to provide support for multiple network layer protocols. Among them, MP-BGP's support feature for IPv6 unicast networks is called BGP4+, BGP4+ via NextHop The route next hop address information is carried by the attribute.
- A. FALSE
- B. TRUE
正解：B
質問 # 71
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