最新 [2026年09月07日]Huawei H12-831_V1.0-ENU試験練習でテストの素晴らしい結果を出そう [Q236-Q258]

最新 [2026年09月07日]Huawei H12-831_V1.0-ENU試験練習でテストの素晴らしい結果を出そう

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質問 # 236
A network engineer is checking LLDP neighbor information on R1. Which of the following descriptions are correct? (Multiple choice)

A. The interface of the peer device is coded as GE0/0/0
B. The sysname of the peer device is R2
C. The management IP address of the peer device is 192.168.1.1
D. The VLAN ID of the peer device is 1

正解：A、B、C

質問 # 237
A network engineer provides a troubleshooting report after rectifying a fault. The actual network is simplified into the one shown in the figure, where R1 and R2 both have OSPF enabled, and function as the gateways of PCI and PC2, respectively. Given this, which of the following statements is false?

A. R1 cannot ping 192.168.1.2.
B. The OSPF routing table of R1 contains a route to 192.168.1.0/24.
C. The router LSA generated by R1 contains information with the link ID being 192.168.1.0.
D. PC1 and PC2 cannot ping each other.

正解：A

質問 # 238
On the OSPF network shown in the figure, the cost values of links are marked. IS-IS Auto FRR is enabled on R1. The primary path from R1 to 10.0.3.3/32 is R1 # R2 # R3, and the backup path is R1 # R4 # R2 # R3.
Is this statement TRUE or FALSE?

A. TRUE
B. FALSE

正解：B

解説：
Comprehensive and Detailed In-Depth Explanation:
Step 1: Analyzing the Primary Path
* The given network uses IS-IS Auto FRR, which ensures a backup route in case of failure.
* The shortest path from R1 to 10.0.3.3/32 is calculated based on the OSPF link costs:
* Path 1 (Primary Path): R1 # R2 # R3
* Cost: 10 (R1#R2) + 5 (R2#R3) = 15 #
Step 2: Checking the Backup Path
* The statement claims that the backup path is R1 # R4 # R2 # R3. Let's calculate the cost:
* Path 2 (Backup Path via R4): R1 # R4 # R2 # R3
* Cost: 10 (R1#R4) + 50 (R4#R2) + 5 (R2#R3) = 65 # (Too high)
* The backup path should be an alternative shortest path that is as close as possible to the primary path in cost.
* R1 # R4 # R2 # R3 is not a feasible backup path because the cost (65) is significantly higher than the primary path (15).
Step 3: Correct Backup Path Selection
* If IS-IS Auto FRR is enabled, a feasible backup path should have a cost close to the primary path.
* In this scenario, no viable alternative path meets the Auto FRR requirements efficiently.
* The given backup path is incorrect.
Final answer: # FALSE (Option B)
References:
* HCIP-Datacom-Advanced Routing & Switching Technology V1.0 - IS-IS Auto FRR Mechanism
* OSPF Route Selection and Fast Reroute Principles
* OSPF and IS-IS Path Cost Calculation

質問 # 239
In the OSPFv3 network shown in the figure, area 1 is the Stub area.

Which of the following descriptions are correct by default? (Multiple choice)

A. Both R1 and R2 will generate Inter-Area-Prefix-LSA
B. Both R1 and R2 will generate Network-LSA
C. Default routes will be generated in the routing tables of R1 and R2
D. Both R1 and R2 will generate Intra-Area-Prefix-LSA

正解：A、D

質問 # 240
The following six tools cannot be used to match BGP routing entries?

A. advancedA, CL
B. IP Prefix List
C. Community Filter
D. basicA, CL

正解：A

質問 # 241
Which of the following descriptions about OSPFv3 are correct? (Multiple choice)

A. The flooding scope of LSA is added to the LSA message of OSPFv3
B. OSPFv3 supports multiple processes on a link
C. OSPFv3 Router LSA and Network LSA do not contain IP addresses
D. In broadcast, NBMA, and P2MP networks, neighbors are no longer identified by IP addresses, but only by Router IDs.

正解：A、B、C、D

質問 # 242
On the IS-IS network shown in the figure, R1 imports a default route using the default-route-advertise always level-1 command. Which of the following statements is false?

A. 10.0.2.2 can ping 10.0.3.3.
B. 10.0.1.1 can ping 10.0.3.3.
C. If R1 pings a nonexistent IP address, for example, 10.0.4.4, R1 does not send any data packets.
D. 10.0.1.1 can ping 10.0.2.2.

正解：B

解説：
Comprehensive and Detailed In-Depth Explanation:
Understanding the IS-IS Topology in the Question:
* R1 (Level-1 Router) is connected to R2 (Level-1-2 Router).
* R2 connects Level-1 and Level-2 areas, making it an inter-area router.
* R3 (Level-2 Router) connects to R2.
* The loopback addresses are:
* R1: 10.0.1.1/32
* R2: 10.0.2.2/32
* R3: 10.0.3.3/32
Key Command Used: default-route-advertise always level-1
* This command forces R1 to advertise a default route (0.0.0.0/0) to Level-1 routers.
* Level-1 routers (like R1) do not have visibility into Level-2 routes unless a default route is provided by an L1-L2 router (R2 in this case).
Analyzing Each Option:
* Option A (TRUE):
* If R1 pings an unknown address like 10.0.4.4, it will use the default route if available.
However, if no such route exists, it will not send any packets.
* This behavior is expected, so this statement is true.
* Option B (TRUE):
* 10.0.2.2 (R2) is a Level-1-2 router, and it can communicate with 10.0.3.3 (R3), which is a Level-2 router.
* Since R2 and R3 are both in Level-2, they can exchange routes.
* So, 10.0.2.2 can ping 10.0.3.3. This statement is true.
* Option C (TRUE):
* 10.0.1.1 (R1) is a Level-1 router, and 10.0.2.2 (R2) is a Level-1-2 router.
* Since R2 is Level-1-2, it shares Level-1 routes with R1, allowing communication between R1 (10.0.1.1) and R2 (10.0.2.2).
* Therefore, this statement is true.
* Option D (FALSE - Correct Answer):
* 10.0.1.1 (R1) is a Level-1 router, which means it only knows about Level-1 routes.
* 10.0.3.3 (R3) is a Level-2 router, and its route is only known by Level-2 routers (R2 & R3).
* Since Level-1 routers do not learn Level-2 routes directly (unless specific redistribution is done), R1 does not have a route to 10.0.3.3.
* Therefore, R1 (10.0.1.1) cannot ping R3 (10.0.3.3), making this statement false.
Conclusion:
The false statement is Option D (10.0.1.1 can ping 10.0.3.3).

質問 # 243
Network administrators can run the clock time zone command to set the time zone of a device. If two network devices have different time zone settings, they cannot establish a neighbor relationship using a dynamic routing protocol.

A. TRUE
B. FALSE

正解：B

質問 # 244
As shown in the figure, the router runs OSPF and Area2 is a completely stub area. Please match the type of LSA contained in each area with the area ID.
Type1 LSA , Type2 LSA , Type3 LSAType1 LSA , Type2 LSA , Types LSA , Type5 LSAType1 LSA , Type2 LSA , Type3 LSA , Type4 LSA , Type5 LSA

正解：

解説：

質問 # 245
R1 executes the operation ping -a lO.l.Ll 10.5.16.2, what is the meaning of this command?

A. pingpackage sourceIPaddress is10.1.1.1
B. pingpackage sourceIPaddress isR1any direct interface address of
C. pingPurpose of the packageIPaddress is10.1.1.1and10.5.16.2
D. pingpackage sourceIFPaddress isR1direction10.5.16.2the optimalIPThe outgoing interface address of the route, and is not
10.1.1.1

正解：A

質問 # 246
In the network shown in the figure, R1 and R2 are configured with single-hop BFD detection. The network engineer found that the BFD session was Down, so he queried the BFD-related configurations of R1 and R2. The configuration information has been marked in the figure.
In addition, the network engineer performed the Ping 10.0.12.2 operation on R1, and the output information is shown in the figure.

Based on this, the possible reason for the BFD session going Down is that the packets with UDP port 4784 are rejected.

A. True
B. False

正解：A

質問 # 247
The deployment of port isolation technology in Ethernet can realize Layer 2 intercommunication and Layer 3 isolation, making the network more flexible.

A. TRUE
B. FALSE

正解：B

質問 # 248
In the network shown in the figure, R1, R2, R4, and R5 run IS-IS with area number 49.0001, and R3 and R6 run IS-IS with area number 49.0002.

Inside AS 65000, R1, R3, R4, and R6 all establish IBGP neighbor relationships with R2 and R5, where R2 and R5 are Rs and R1, R4, R3, and R6 are clients. IBGP neighbor relationships are all established using the Loopback0 interface. R2 and R5 also establish an IBGI neighbor relationship. The IP address of the Loopback0 interface of each device is 10.0.X.X/32, and the Router ID is 10.0.X.X, where X is the device number. R1 and R4 introduce the external network
192.168.1.0/24 into BGP through import. For 192.168.1.0/24, please match it according to the number of valid routes in the output information of "display bep routing-table".

正解：

解説：

質問 # 249
In an MPLS L3VPN deployment, PE routers exchange VPNv4 routes through MP-BGP.
Customer routes are correctly learned from CE devices but are not installed into the correct VRF routing table on the remote PE. Which configuration element is most likely missing?

A. LDP enabled on PE
B. BFD for BGP
C. VPN instance import/export Route Target configuration
D. OSPF sham-link

正解：C

質問 # 250
As shown in the figure, in order to realize the correct transmission of VPN routes in the Hub&Spoke network, the administrator deployed IGP between Hub-PE and Hub-CE, and deployed EBGP between Spoke-PE and Spoke-CE.

A. True
B. False

正解：A

質問 # 251
The configuration shown in the figure is performed on R2 to filter all received routes. Assuming that there is a BGP route with the AS_Path attribute of [100 200 300 400] on R1 that needs to be sent to R2, please help the network administrator to adjust the order of AS in the AS_Path attribute of the route on R1 to ensure that the routing entries will not be filtered by the routing policy of R2. (Sorting questions)

A. 0
B. 1
C. 2
D. 3

正解：A、B、C、D

質問 # 252
On the network shown in the figure, IS-IS runs on Rl, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. In AS 65000, Ri, R3, R4, and R6 each establish IBGP peer relationships with R2 and R5. R2 and R5 are RRs, and Rl, R4, R3, and R6 are clients. The IBGP peer relationships are established using LoopbackO. The IP address of LoopbackO on each router is 10.0.X.X/32, and the router ID is 10.0.X.X, where X is the number of the router. Rl and R4 import the external route
192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route
192.168.2.0/24 to BGP through the import-route command. Which of the following statements are true?

A. For 192.168.2.0/24, R5 preferentially selects the BGP route received from R3.
B. For 192.168.1.0/24, R3 preferentially selects the BGP route received from R2.
C. For 192.168.1.0/24, R6 preferentially selects the BGP route received from R2.
D. For 192.168.2.0/24, R2 preferentially selects the BGP route received from R3.

正解：A、B、C、D

質問 # 253
In the BGP/MPLS IP VPN network shown in the figure, the administrator uses Hub- spoke networking to implement centralized control of VPN traffic at the Hub site. Which of the following RT value plans for each device is correct?

A. PE1 VPN1: IRT=100:1; ERT=200:1
PE2 VPN1: IRT=100:1; ERT=200:1
PE3 VPN_in: IRT=200:1; VPN_out: ERT=100:1
B. PE1 VPN1: IRT=100:1; ERT=200:1
PE2 VPN1: IRT=100:1; ERT=200:1
PE3 VPN in: IRT=100:1; VPN_out: ERT=200:1
C. PE1 VPN1: IRT=100:1; ERT=200:1
PE2 VPN1: IRT=100:1; ERT=200:1
PE3 VPN1: IRT=200:1; ERT=100:1
D. PE1 VPN1: IRT=100:1; ERT=100:1
PE2 VPN1: IRT=100:1; ERT=100:1
PE3 VPN1: IRT=100:1; ERT=100:1

正解：A

質問 # 254
To prevent attackers from forging BGP messages to attack devices, you can protect devices by configuring the GTS function to detect the range of TTL values in the IP message header. If a device is configured with "peer xxxx valid-ttl-hops 100", the valid range of TTL values of the detected messages is [155, 255].

A. True
B. False

正解：B

質問 # 255
On the OSPF network shown in the figure, the cost values of links are marked, and OSPF IP FRR is enabled on R1. Which of the following statements is false?

A. If the link between R1 and SI is disconnected, Rl recalculates the optimal path to R3 and performs path switching instantly.
B. If the link between R1 and SI is disconnected and you check neighbor information on R1, the neighbor relationship between R1 and R2 will instantly display Down.
C. If the link between R1 and SI is disconnected, R1 directly uses the backup path to forward packets to R3 because FRR is enabled on R1.
D. If the link between R2 and SI is disconnected, R1 recalculates the optimal path to R3 and performs path switching instantly.

正解：A

質問 # 256
Network administrator A wants to use ACL to match specific routing entries. Which of the following routing entries will be matched by the ACL rules in the figure? (Multiple choice) acl number 2000 rule 10 permit source 10.0.0.0 0.0.6.0

A. 10.0.1.0/24 :
B. 10.0.0.0/24
C. 10.0.2.0/24
D. 10.0.0.1/32

正解：B、C

質問 # 257
As shown in the figure, SF is enabled on all interfaces of the router, the cost value of the link is marked in the figure, and the Loopback0 interface of R2 is advertised in area 1, then the cost value of R1 reaching 10.0.2.2/32 is?