최신 H12-831_V1.0-ENU 무료덤프 - Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0
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.
Match the names of interface security protection actions with corresponding operations.
정답:
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."
Service routes of an enterprise are transmitted on the network. Some configurations of PE1 and PE2 are shown in the figure. Which of the following LSAs may CE2 receive?
정답: A,C
The path that IP packets pass through on an MPLS network is called a label switched path (LSP). An LSP is a bidirectional path that specifies the transmission direction of data flows.
정답: A
If technology migration on the network affects the services running on the live network, strictly follow the preset operation process and risk control measures during the implementation of the technology migration project. Generally, this type of project is defined as a migration project. Which of the following operations performed on the live network belongs to a non-migration project?
정답: D
In the hub-spoke networking shown in the figure, the Hub-PE can be configured to allow repetitive local AS numbers for correct route transmission.
정답: B
A network engineer checks LLDP neighbor information on R1. The output is shown below.
Which of the following statements are true?
LLDP Output:
yaml
CopyEdit
<R1> display lldp neighbor interface GE0/0/0
------------------------------------------------
GE0/0/0 has 1 neighbor(s):
Neighbor index: 1
Chassis type: MAC Address
Chassis ID: faed-ad04-0010
Port ID subtype: Interface Name
Port ID: GE0/0/0
System name: R2
System description: Huawei YunShan OS
Version 1.22.01 (AR8000 V100R002C200)
Copyright (C) 2021-2022 Huawei Technologies Co., Ltd.
HUAWEI AR8140-12G10XG
System capabilities supported: bridge router
System capabilities enabled: bridge router
Management address type: IPv4
Management address: 192.168.1.1
Expired time: 107s
Which of the following statements are true?
LLDP Output:
yaml
CopyEdit
<R1> display lldp neighbor interface GE0/0/0
------------------------------------------------
GE0/0/0 has 1 neighbor(s):
Neighbor index: 1
Chassis type: MAC Address
Chassis ID: faed-ad04-0010
Port ID subtype: Interface Name
Port ID: GE0/0/0
System name: R2
System description: Huawei YunShan OS
Version 1.22.01 (AR8000 V100R002C200)
Copyright (C) 2021-2022 Huawei Technologies Co., Ltd.
HUAWEI AR8140-12G10XG
System capabilities supported: bridge router
System capabilities enabled: bridge router
Management address type: IPv4
Management address: 192.168.1.1
Expired time: 107s
정답: B,C,D
설명: (DumpTOP 회원만 볼 수 있음)
On the IS-IS IPv6 network shown in the figure, after the network becomes stable:
* R1 can ping 2000:12::0, and
* The display ipv6 neighbors command can be used to display the MAC address corresponding to
2000:12::0.
Is this statement TRUE or FALSE?
* R1 can ping 2000:12::0, and
* The display ipv6 neighbors command can be used to display the MAC address corresponding to
2000:12::0.
Is this statement TRUE or FALSE?
정답: A
설명: (DumpTOP 회원만 볼 수 있음)
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::/128. The IPv6 summary 2000::/64 level-1-2 command is configured in the IS-IS processes of R2 and R1. Which of the following statements is false?
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
Large and midsize enterprise networks can be divided into the access layer, aggregation layer, and core layer. Network engineers need to work out a migration solution for the operations to be performed at any layer, as long as the operations affect services on the live network.
Options:
Options:
정답: B
설명: (DumpTOP 회원만 볼 수 있음)
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.
* If you check 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 Router-LSA.
Is this statement TRUE or FALSE?
* 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.
* If you check 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 Router-LSA.
Is this statement TRUE or FALSE?
정답: B
설명: (DumpTOP 회원만 볼 수 있음)