H12-831_V1.0試験無料問題集「Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 認定」
On the OSPF network shown in the figure, the cost values of links are marked. OSPF IP FRR is enabled on R1, and the maximum load-balancing 8 command is configured in the OSPF process. Which of the following is the cost value of the route 10.0.35.0/24 in the routing table of R1?
正解：B
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解説: (GoShiken メンバーにのみ表示されます)
On the network shown in the figure, IS-IS IPv6 runs on R2, R6, and R3, and the IPv6 address of Loopback0 on R6 is 2000::6/128. OSPFv3 runs on other links. Area 1 is a stub area, and Area 2 is an NSSA. IS-IS routes are imported to OSPFv3 on R2 and R3. Which of the following statements are true?
正解：A,B,D
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解説: (GoShiken メンバーにのみ表示されます)
On the network shown in the figure, VRRP is configured on Rl and R2, and the virtual IP address is
10.0.12.254. After the configuration is complete, the network engineer checks the VRRP status on R1 and R2, and finds that both devices are in the Master state. Which of the following is not a possible cause of this problem?
10.0.12.254. After the configuration is complete, the network engineer checks the VRRP status on R1 and R2, and finds that both devices are in the Master state. Which of the following is not a possible cause of this problem?
正解：B
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On the OSPFv3 network shown in the figure, the LSDB (Link-State Database) of R2 contains ______ Router-LSAs. (Enter only digits.)
正解：
3
Explanation:
1. Understanding Router-LSAs in OSPFv3
* Router-LSA (Type 1 LSA) is generated by every OSPFv3 router to describe its own links and connected networks within the same area.
* Each router in an OSPF area generates exactly one Router-LSA to advertise its own topology information.
* Router-LSAs are flooded throughout the area but do not cross area boundaries.
2. Analyzing the Given OSPFv3 Network
* The topology consists of three routers: R1, R2, and R3, all connected in OSPFv3 Area 0.
* Since all three routers participate in OSPFv3, each router generates its own Router-LSA (Type 1 LSA).
* R2, as an OSPF router, will have its own Router-LSA and also receive the Router-LSAs from R1 and R3.
3. Counting the Number of Router-LSAs in R2's LSDB
* R1 generates 1 Router-LSA (for itself).
* R2 generates 1 Router-LSA (for itself).
* R3 generates 1 Router-LSA (for itself).
* Total Router-LSAs in R2's LSDB = 3 (one from each router).
Final Answer:
HCIP-Datacom-Advanced Routing & Switching Technology References:
* OSPFv3 LSA Types and Their Roles
* Understanding Router-LSA (Type 1) and Its Function in LSDB
Explanation:
1. Understanding Router-LSAs in OSPFv3
* Router-LSA (Type 1 LSA) is generated by every OSPFv3 router to describe its own links and connected networks within the same area.
* Each router in an OSPF area generates exactly one Router-LSA to advertise its own topology information.
* Router-LSAs are flooded throughout the area but do not cross area boundaries.
2. Analyzing the Given OSPFv3 Network
* The topology consists of three routers: R1, R2, and R3, all connected in OSPFv3 Area 0.
* Since all three routers participate in OSPFv3, each router generates its own Router-LSA (Type 1 LSA).
* R2, as an OSPF router, will have its own Router-LSA and also receive the Router-LSAs from R1 and R3.
3. Counting the Number of Router-LSAs in R2's LSDB
* R1 generates 1 Router-LSA (for itself).
* R2 generates 1 Router-LSA (for itself).
* R3 generates 1 Router-LSA (for itself).
* Total Router-LSAs in R2's LSDB = 3 (one from each router).
Final Answer:
HCIP-Datacom-Advanced Routing & Switching Technology References:
* OSPFv3 LSA Types and Their Roles
* Understanding Router-LSA (Type 1) and Its Function in LSDB
In the BFD (Bidirectional Forwarding Detection) mechanism, two systems establish a BFD session and periodically send BFD control packets along the path between them. If one system does not receive BFD control packets within a specified period, the path is considered faulty.
Which of the following is NOT a possible cause of the BFD session down event?
Options:
Which of the following is NOT a possible cause of the BFD session down event?
Options:
正解：A
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解説: (GoShiken メンバーにのみ表示されます)
VLAN aggregation is configured on a switched network. Sub-VLAN 2 and Sub-VLAN 3 are added to Super-VLAN 10.
To enable hosts in different Sub-VLANs to communicate with each other, run the _____ inter-sub-vlan- proxy enable command in the view of VLANIF 10, corresponding to the Super-VLAN.
(Enter the answer in lowercase letters only.)
To enable hosts in different Sub-VLANs to communicate with each other, run the _____ inter-sub-vlan- proxy enable command in the view of VLANIF 10, corresponding to the Super-VLAN.
(Enter the answer in lowercase letters only.)
正解：
supervlan
Explanation:
1. Understanding VLAN Aggregation in Huawei Switches
* VLAN aggregation is a technique that groups multiple VLANs (sub-VLANs) under a single Super- VLAN.
* Super-VLANs do not have member interfaces but include multiple Sub-VLANs that share a common gateway (VLANIF interface).
2. Inter-Sub-VLAN Communication Requirement
* By default, hosts in different sub-VLANs cannot communicate directly.
* To enable communication between different sub-VLANs within the same Super-VLAN, an inter- sub-VLAN proxy must be enabled.
* This is done using the inter-sub-vlan-proxy enable command in the VLANIF interface of the Super- VLAN.
3. Correct Command Usage
* The command format is:
shell
CopyEdit
supervlan inter-sub-vlan-proxy enable
* This command must be executed under VLANIF 10, corresponding to the Super-VLAN.
4. Why is the Answer "supervlan"?
* The missing parameter in the command should be supervlan, because it is used to enable communication between Sub-VLANs under a Super-VLAN.
* This is a specific Huawei command used in HCIP-Datacom-Advanced Routing & Switching Technology certification.
Explanation:
1. Understanding VLAN Aggregation in Huawei Switches
* VLAN aggregation is a technique that groups multiple VLANs (sub-VLANs) under a single Super- VLAN.
* Super-VLANs do not have member interfaces but include multiple Sub-VLANs that share a common gateway (VLANIF interface).
2. Inter-Sub-VLAN Communication Requirement
* By default, hosts in different sub-VLANs cannot communicate directly.
* To enable communication between different sub-VLANs within the same Super-VLAN, an inter- sub-VLAN proxy must be enabled.
* This is done using the inter-sub-vlan-proxy enable command in the VLANIF interface of the Super- VLAN.
3. Correct Command Usage
* The command format is:
shell
CopyEdit
supervlan inter-sub-vlan-proxy enable
* This command must be executed under VLANIF 10, corresponding to the Super-VLAN.
4. Why is the Answer "supervlan"?
* The missing parameter in the command should be supervlan, because it is used to enable communication between Sub-VLANs under a Super-VLAN.
* This is a specific Huawei command used in HCIP-Datacom-Advanced Routing & Switching Technology certification.