無料Huawei H12-821_V1.0-ENUテスト練習問題試験問題集
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Huawei H12-821_V1.0-ENU（HCIP-Datacom-Core Technology v1.0）認定試験は、複数選択の質問、シナリオベースの質問、シミュレーションの質問で構成される包括的な試験です。この試験は、コースでカバーされている概念に関する候補者の理解と、これらの概念を実際のシナリオで適用する能力をテストするように設計されています。
質問 # 221
Regarding the default routes of each protocol, which of the following description is wrong?
- A. Static default routing can be configured
- B. OSPF cannot deliver the default route
- C. BGP can deliver default routes
- D. ISIS can issue default routes
正解：B
質問 # 222
About the OSPF calculating the shortest path tree phase, which of the following description is true?
- A. The routing node and Transiti network segment are calculated in the first stage, Stub network segment is calculated in the second stage
- B. The routing node is calculated in the first stage, the stub network segment is calculated in the second stage
- C. The Stub segment is calculated in the first stage, the routing node is calculated in the second stage
- D. Stub network segment is calculated in the first stage, router node and transit network segment are calculated in the second stage
正解：A
質問 # 223
Which of the following WAN links are packet switching networks? (Multiple choice)
- A. PSTN
- B. ATM
- C. MSTP
- D. X.25
- E. ISDN
正解：B、D
質問 # 224
In IGMPv1, if all the multicast members of a group leave, how many seconds does it take for the router to delete the corresponding multicast forwarding entry?
- A. 180 seconds
- B. 130 seconds
- C. 160 seconds
- D. 90 seconds
正解：B
質問 # 225
SA (Security Association) is a parameter that must be negotiated when an IPsec tunnel is established, so which of the following parameters is used to uniquely identify SA? (Multiple choice)
- A. Security Protocol Number
- B. Source MAC address
- C. Header checksum of the network layer header
- D. SPI (Security Parameter Index)
- E. Destination IP address
- F. Source IP address
正解：A、E、F
質問 # 226
Which of the following types of LSAs can carry tag information for external routes?
- A. LSA2
- B. LSA5
- C. LSA3
- D. LSA4
正解：B
質問 # 227
The extension of MP-BGP to BGP-4 allows different types of address clusters to be distributed in BGP at the same time.
Which of the following address clusters are supported by MP-BGP? (Multiple choice)
- A. IPv4 multicast
- B. EVPN
- C. IPv6
- D. L3VPN
正解：A、B、C、D
質問 # 228
As shown in the figure, RTA, RTB, RTC, and RTD are in the same AS. IBGP neighbor relationships are established through direct links. RTB and RTC are route reflectors. RTA and RTC are the route reflector clients of RTB. RTD is the route reflector client of RTC, and 10.1.1.0/24 is announced into BGP on RTA, and the Originator ID value of the BGP route received on RTD is updated to ().
正解：
解説：
1.1.1.1
質問 # 229
Which of the following descriptions about OSPFDD messages is correct?
- A. DD packets carry complete OSPF link state information
- B. OSPF must determine the master-slave relationship when exchanging DD messages, and the side with the smaller Router ID is the Master
- C. DD packets appear in the three phases of ExStart Exchange and Loading
- D. Only DD packets transmitted in the Exchange state will carry link state information
正解：D
質問 # 230
The interface using Silent-Interface will not receive and send OSPF packets, but the direct route can be advertised to OSPF.
- A. FALSE
- B. TRUE
正解：B
質問 # 231
In a broadcast network, what is the default interval for sending Hello by DIS?
- A. 40s
- B. 10s
- C. 3.3s
- D. 5s
正解：C
質問 # 232
In order to avoid inter-area loops, OSPF regulations do not allow routing information to be published directly between two non-backbone areas, and only allow routing information to be published within an area or between a backbone area and a non-backbone area. Therefore, each area border router (ABR) must be connected to the backbone area.
- A. True
- B. False
正解：A
質問 # 233
What packet types does OSPF include? (Multiple choice)
- A. Database Description
- B. Link State DD
- C. Link State Request
- D. Hello
正解：A、C、D
質問 # 234
Regarding the description of the permanent multicast address, which of the following is false?
- A. All hosts and routers in the network segment listen to 224.0.0.1
- B. All routers listen on 224.0.0.2
- C. All routers running the PIM protocol listen to 224.0.0.100
- D. All routers running OSPF protocol listen on 224.0.0.5
正解：C
質問 # 235
Which of the following description of VRRP is wrong?
- A. A virtual router is composed of a main router and several backup routers. The main router realizes the real forwarding function. When the main router fails, a backup router will become the new main router and take over its work.
- B. VRRP is a redundant backup protocol, designed for LANs with multicast or broadcast capabilities (such as Ethernet) to ensure that when the next hop router device of a host in the LAN fails, another router can be used in a timely manner Instead, so as to maintain the continuity and reliability of network communication
- C. When using the protocol, you need to configure the virtual router and virtual IP address on the router, and directly use the real MAC of the main router, so that a virtual router is added to the network
- D. The host on the network communicates with the virtual router, and there is no need to know all the information of the physical router on this network
正解：C
質問 # 236
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