Huawei H12-831_V1.0 問題集

質問 1：
When configuring port security on a switch, the administrator also enables static MAC address flapping detection. If static MAC address flapping occurs, the switch takes the configured action to protect the interface.
Match the names of interface security protection actions with corresponding operations.

正解：

Explanation:
* Restrict # Discards the packets that trigger static MAC address flapping and reports an alarm.
* Protect # Discards the packets that trigger static MAC address flapping only and does not report an alarm.
* Shutdown # Sets the interface state to error-down and reports an alarm.
Comprehensive and Detailed In-Depth Explanation:
1. Understanding Port Security Modes
Port security is used to control access on a switch port based on MAC addresses. If a MAC address violation occurs (e.g., static MAC address flapping), the switch can take different actions based on the configured security mode.
Security Mode
Description
Restrict
Drops the violating packets and logs the violation by generating an alarm.
Protect
Drops the violating packets but does not generate an alarm.
Shutdown
Places the interface into error-disabled (error-down) state and logs an alarm.
2. Matching Each Security Mode with Its Operation
* Protect Mode:
* The switch drops the packets from the unauthorized MAC address.
* No alarm is generated or logged.
* Correct Mapping: "Discards the packets that trigger static MAC address flapping only and does not report an alarm."
* Restrict Mode:
* The switch drops the packets from the unauthorized MAC address.
* An alarm is generated and logged in the system.
* Correct Mapping: "Discards the packets that trigger static MAC address flapping and reports an alarm."
* Shutdown Mode:
* The switch shuts down the interface by placing it into the error-down state.
* An alarm is generated and logged.
* Correct Mapping: "Sets the interface state to error-down and reports an alarm."

質問 2：
The figure shows the debugging information on an OSPF router. Which of the following is the router ID of this router?

A. 10.0.12.2
B. 10.0.12.1
C. 10.0.2.2
D. 10.0.1.1
正解：C

質問 3：
On the network shown in the figure, EBGP peer relationships are established between neighboring routers through directly connected interfaces.
* The router ID of each router is 10.0.X.X, and the AS number is 6500X, where X is the number of the router.
* Both R1 and R4 have static routes to 192.168.1.0/24, which are imported to BGP through the import-route command.
* R1 adds a community attribute (1:1) to the route before advertising it to its peers.
* All routers are configured to propagate community attributes.
* R3 is configured with a routing policy that rejects routes with the community attribute 1:1.

In this case, which of the following is the path for traffic from R3 to 192.168.1.0/24?
A. R3 # R5 # R1
B. R3 # R2 # R1
C. R3 does not have a route to 192.168.1.0/24
D. R3 # R2 # R4
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 4：
On the IS-IS IPv6 network shown in the figure:
* Multi-topology is enabled on all routers.
* The IPv6 address of Loopback0 on R4 is 2000::4/128.
* The command ipv6 summary 2000::/64 level-2 is configured in the IS-IS processes of R2 and R1.
* The command ipv6 import-route isis level-2 into level-1 is configured in the IS-IS processes of R1, R2, and R3.

Which of the following routers have the route 2000::/64 in their routing tables?
A. R3
B. R2
C. R5
D. R4
正解：A,B
解説: (Topexam メンバーにのみ表示されます)

質問 5：
On the network shown in the figure, the DHCP server function is enabled on GEO/0/0 of R2, and the address pool is an interface address pool. When GEO/0/0 and GEO/0/1 of R1 function as DHCP clients, only one interface can obtain an IP address by default.

A. FALSE
B. TRUE
正解：B

質問 6：
On the OSPFv3 network shown in the figure:
* OSPFv3 is enabled on the interfaces connecting R1, R2, and R3.
* The router ID of each router is 10.0.X.X, where X is the number of the router.
* When checking detailed information about an LSA on R3, the command output shows that the LSA is generated by R2 and describes the IPv6 prefix address associated with the Network-LSA.

Based on this information, which of the following statements is correct?
A. FALSE
B. TRUE
正解：B
解説: (Topexam メンバーにのみ表示されます)