[Dec 03, 2024] Huawei H12-821_V1.0-ENU Exam Dumps Files, Q1/478: In WLAN networking, backup technologies can be deployed to ensure the reliability of the networking.

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Question 1/478

In WLAN networking, backup technologies can be deployed to ensure the reliability of the networking.
Which of the following statements about backup technology is correct? (Multiple choice)

A. After deploying VRP hot backup, when the active AC fails, STA can forward data directly through the standby AC

B. After N+1 backup is deployed, when the active AC fails, the AP needs to go online to the standby AC again, and the STA will interrupt the service

C. After deploying dual-link cold backup, when the active AC fails, the AP only needs to wait for a period of time before switching to the standby AC, which will not affect the STA business

D. After deploying dual-link hot backup, when the active AC fails, the AP can quickly switch to the standby AC, and the STA does not need to disconnect and reconnect

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Which of the following descriptions of the different classifications of PBR is correct?...; Q318. The BGPAS_PATH attribute is an optional transition attribute....; Q319. MSTP uses the 802.1D standard and is backward compatible with STP and RSTP. By establishi...; Q320. Which of the following description about verifying whether a received Hello message is leg...; Q321. The routing tool route-policy can filter and set BGP attributes based on pre-defined condi...; Q322. When configuring dual-link hot backup in a WLAN network, the larger the value of the conf...; Q323. A company often has employees who need to go on business trips, so they often need to remo...; Q324. The following is a partial configuration of a router. The correct description of this conf...; Q325. Which of the following statements about stack splitting is incorrect?...; Q326. As shown in the figure, a set of TCP data flows are transmitted between the Trust zone an...; Q327. When receiving which of the following messages, the DHCPv6 server will not reply with a R...; Q328. Which of the following descriptions of multicast routing are correct? (Multiple choice)...; Q329. Among the following BGP attributes, which are the recognized mandatory types of attributes...; Q330. The ABR of the OSPF Stub area does not flood Type 5 LSAs and Type 4 LSAs into the Stub ar...; Q331. Which of the following descriptions of the OSPF protocol is wrong?...; Q332. Which is the correct description of Route Policy is? (Multiple choice)...; Q333. The configuration shown in the figure is performed to filter all received routes. Assume ...; Q334. Option 82 in the DHCP message is called the relay agent information option, from which the...; Q335. What are the differences between IGMP versions? (Multiple choice)...; Q336. Which of the following description about AS_PATH is wrong?...; Q337. L2TP has many different scenarios, so which of the following is not a scenario of L2TP?...; Q338. Among the commonly used routing policy tools for BGP, which of the following can be used t...; Q339. In which part of the multicast network architecture is the IGMP protocol used?...; Q340. SSH uses asymmetric encryption algorithms AES and DES to achieve data transmission securit...; Q341. When the configuration BGP time, if such a warning is generated: "BGPI6ESTABLISHED: the OI...; Q342. Please match the following VRRP status with the corresponding working mechanism (Exhibit)...; Q343. The connection between Site_1 and Site_2 is shown in the figure. According to the configur...; Q344. In order for the non-directly connected EBGP neighbors to be established normally, which o...; Q345. On-board AC refers to the built-in AC capability of Huawei agile switches to achieve inte...; Q346. Which of the following descriptions of message authentication methods in IS-IS are correc...; Q347. Which of the following descriptions of LSP in IS-IS is incorrect?...; Q348. Regarding the necessity of equipment software upgrade, which of the following options are ...; Q349. Which of the following descriptions about the OSPF protocol are correct? (Multiple choice)...; Q350. Which of the following tools cannot be used for route filtering?...; Q351. R1, R2, R3, and R4 run IS-S, and the DIS Priority of their interfaces is shown in the figu...; Q352. The main function of MBGP is to help perform RPF verification of cross-domain multicast f...; Q353. As shown in the figure, R1 and R2 have configured the local sending time interval, the lo...; Q354. The following is part of the router RTA configuration. Which part of the configuration des...; Q355. Which of the following descriptions of routing policy characteristics is incorrect?...; Q356. ACL command ac1 [ number ] ac1-number [ match-order{ autol config} ] , where ac1-numnbe is...; Q357. Which of the following IEEE 802.11 standards corresponds to Wi-Fi 6?...; Q358. Which of the following values can be set for the security level of the customized security...; Q359. Network administrator A wants to check the neighbor status of BGP router R2. The BGP neig...; Q360. Which TLV is used by IS-IS to describe the IP Interface Address?...; Q361. As shown in the figure, in a pure IPv6 environment, if you want to realize the communicat...; Q362. Match policy routing and routing policies with the tools they use (Exhibit)...; Q363. The above information about display ospf peer output, the correct description is: <Huaw...; Q364. What functions can Huawei iMaster NCE products achieve? (Multiple choice)...; Q365. As shown in the figure, the forwarding of data traffic before roaming is STA-HAP-upper lay...; Q366. The routing strategy supports multiple operations on routing attributes. Please match the ...; Q367. Through display current-configuration, you can see the running configuration in memory....; Q368. The IGMP protocol runs between an IP host and its directly connected multicast router to m...; Q369. The following description of the BGP UPDATE message, which is wrong?...; Q370. In multicast, the rendezvous point RP is an important PIM router in the network. Whether ...; Q371. Which of the following descriptions about the IGMPv3 report (G, INCLUDE, (S1)) sent by a ...; Q372. BGP prefers the route with the best Origin attribute value. The value of the Origin attri...; Q373. In RSTP, you can use the stp root primary command to configure the current device as the ...; Q374. The ACL configuration on a certain router is shown in the figure, so which of the followi...; Q375. Which one of the following descriptions of the trigger mechanism of 802.1X authentication ...; Q376. As shown in the figure, all routers run IS-IS. R3 is a Level-1 router, R6 is a Level1-2 ro...; Q377. What functions can Huawei iMaster NCE products achieve? (Multiple choice)...; Q378. When Xiao Wang unpacked and inspected the goods, he found that the appearance of the devic...; Q379. In a stateful inspection firewall, when the stateful inspection mechanism is turned on, wh...; Q380. It can be used in a variety of routing protocols. The routing selection tool consisting of...; Q381. When the IPv6 address of the host is configured by using stateless address configuration, ...; Q382. A Layer 2 switch is a data link layer device that can identify the MAC address information...; Q383. Regarding BGP reliable routing updates, which of the following description of is ture?...; Q384. Which of the following descriptions of the advantages of IPv6 are correct? (Multiple choi...; Q385. Routes injected into BGP by redistribution command, whose Origin attribute is Incomplete....; Q386. There is a message in the BGP protocol that is periodically sent between BGP neighbors to ...; Q387. About LSA3, LSA4 and LSA5, which of the following description is correct?...; Q388. Which of the following descriptions about OSPF special areas is wrong?...; Q389. BGP prefers the route with the best Origin attribute value. The Origin attribute value is...; Q390. VXLAN users can access the Internet through the VXLAN interface....; Q391. In RSTP, the edge port does not need to wait for the forwarding delay, and can directly en...; Q392. In IS-IS, DIS is used to create and update pseudo nodes, and is responsible for generatin...; Q393. What message types does OSPF include? (Multiple choice)...; Q394. During the operation of DHCP, various message types will be exchanged, so which of the fol...; Q395. Please pair the following IGMP versions with the corresponding working mechanisms. (Exhibi...; Q396. BFD determines whether a fault has occurred by periodically detecting packets. It is a fas...; Q397. Regarding the description of IGMP Snooping-working mechanism, which is the correct?...; Q398. Regarding the special area of OSPF, which of the following description of is incorrect?...; Q399. As shown in the figure below, the firewall received the message from PC1 to PC2, which of ...; Q400. What are the three ways to send IPV4 packets? (Multiple choice)...; Q401. Which of the following descriptions of routing policies and policy routing are correct? (...; Q402. Please match the following VRRP status with the corresponding working mechanism. (Exhibit)...; Q403. In the DU label distribution mode, if the Liberal retention mode is used, the device will...; Q404. Which of the following descriptions about OSPF virtual connections is wrong?...; Q405. Which protocol modules can BFD detection be linked with? (Multiple choice)...; Q406. In WLAN networking, which of the following backup technologies has the lowest cost and the...; Q407. As shown in the figure, the management VLAN of the LAN is VLAN 10, the AP obtains an IP a...; Q408. Which of the following statements about IGMPv2 routers maintaining segment group membershi...; Q409. Which of the following attributes must be recognized by all BGP devices and exist in Updat...; Q410. In the RSTP network shown in the figure, according to the configuration of SWC in the figu...; Q411. Which of the following description about the prefix list is wrong?...; Q412. Two Huawei devices R1 and R2 form a VRRP backup group. R1 is VRRPv2, and R2 is VRRPv3. Whi...; Q413. BGP routers can send incremental BGP routing updates or perform periodic updates....; Q414. The RSTP protocol provides a variety of protection functions. For example, when the border...; Q415. When a large number of IP phones and WLAN APs need to be accessed in the network, which fu...; Q416. Which of the following does not include the advantages of address translation technology?...; Q417. Add the interface GE1/0/1 in the trusts security zone on the Huawei firewall. At this time...; Q418. The IPv6 address 2001:FC1A:8BAD:0112:0000:1200:0001/64 is abbreviated to 2001:FC1A:8BAD:11...; Q419. Which of the following VPN technologies may have two IP packet headers in one packet? (Mul...; Q420. The function of routing protocol priority is to assign different priorities to routes dis...; Q421. A switch will join the stack system, so the stack ID is manually configured to be 2 in adv...; Q422. The session-based state inspection firewall has different processing procedures for the fi...; Q423. Regarding the description of LSA header information in OSPF AS -External - LSA, which is w...; Q424. In the USG series firewalls, what is the security level of the Untrusts area?...; Q425. In the MSTP protocol, each MST Instance uses the RSTP algorithm alone to calculate a separ...; Q426. Which of the following descriptions about AC roaming groups is wrong? (Multiple choice)...; Q427. Which of the following descriptions about OSPF DR/BDR is wrong?...; Q428. Using NAT technology, only the network layer information (IP address) in the data packet ...; Q429. Which of the following descriptions of mirror ports are correct? (Multiple choice)...; Q430. The BFD control message is encapsulated in a UDP message for transmission, so the destinat...; Q431. Which of the following tools cannot be directly referenced by the apply clause of a route-...; Q432. Which of the following descriptions about LSA and LSDB are wrong? (Multiple choice)...; Q433. Please match the following hardware modules with the corresponding functions. (Exhibit)...; Q434. An existing enterprise has upgraded the network bandwidth, and the export bandwidth has be...; Q435. Generally, an interface only needs to be configured with one primary IP address, but in so...; Q436. When BGP establishes a peer connection, both this segment and the peer end will initiate ...; Q437. When a stateful inspection firewall forwards subsequent data packets (not the first packet...; Q438. As shown in the figure, the stateful inspection firewall will forward the packet because t...; Q439. There are many ways to establish clusters with modular switches. What methods does Huawei ...; Q440. The command format of the prefix list is ip ip-prefix ip-prefix-name [index index-number] ...; Q441. Which of the following descriptions about OSPF Router ID is correct?...; Q442. In order to avoid inter-area loops, OSPF stipulates that routing information is not allow...; Q443. Whether a non-edge port moves to the forwarding state is one of the criteria for RSTP to d...; Q444. Regarding the special area of OSPF, the wrong description is:...; Q445. As shown in the figure, which of the following may be the reason why the adjacency relati...; Q446. The following is part of the configuration information of the router Huawei. Which of the...; Q447. Which of the following information does the BGP Open message carry? (Multiple choice)...; Q448. In the MAC priority-based Portal authentication scenario, when a user successfully perfor...; Q449. Which of the following does not belong to the OSI network management model?...; Q450. As shown in the figure, the GEO/0/0 and GEO/0/1 interfaces of RTA are respectively connec...; Q451. Which of the following descriptions about BGP route aggregation is wrong?...; Q452. Whether a non-edge port migrates to the Forvardin state is one of the criteria for RSTP t...; Q453. If the Length/Type=O*8100 of an Ethernet data frame, which of the following options may th...; Q454. As shown in the figure, when R2 passes the route of 10.0.1.0/24 to R3, which of the follow...; Q455. One of the features of OSPF is that it only supports MD5 authentication....; Q456. Which of the following parameters are involved in the election of the master switch in the...; Q457. The following is the information output by a router. The correct description of this infor...; Q458. After STA roams in WLAN, if it wants to continue to access the home network, it can set t...; Q459. Which function does the switch control plane not include?...; Q460. By default, VRP will automatically aggregate the routes imported by BGP....; Q461. ip ip-prefx List1 index 10 permit 10.1.0.0 24 greater-equal () less-equal 32 means that th...; Q462. Which statement about RIB and FIB is wrong?; Q463. As shown in the figure, which of the following routes can be matched by this prefix list?...; Q464. The statement about OSPF AS-External-LSA, which is correct? (Multiple choice)...; Q465. By default, how many seconds is the BCP peer adjacency relationship maintained?...; Q466. Which of the following descriptions about IGMPv1 and IGMPv2 are correct? (Multiple choice)...; Q467. In the Eudemon firewall, which of the following data flows are defined as the outbound dir...; Q468. Regarding the description of the characteristics of the routing strategy, which is correct...; Q469. In IS-IS, DIS is used to create and update pseudo nodes, and is responsible for generating...; Q470. On Huawei equipment, which of the following commands can be used to configure VRRP and BFD...; Q471. Which of the following is wrong about OSPF discarding directly?...; Q472. As shown in the figure, when R2 passes the route of 10.0.1.0/24 to R3, which of the follo...; Q473. Which of the following OSPF packets carries master-slave relationship information?...; Q474. The ACL command ac1 [number] ac1-number [ match-order {autol config}], where ac1-numnbe is...; Q475. D. DoS attack means that the attacker controls many zombie hosts and sends many well-const...; Q476. Which of the following working mechanisms are included in PIM-DM? (Multiple choice)...; Q477. By default, the OSPF port cost is related to the port bandwidth. The calculation formula i...; Q478. How long is the default DHCP address pool lease period?...

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