On the network shown in the figure, R1 and R2 use directly connected interfaces to establish a BGP peer relationship. The debugging information shown in the figure is displayed on R2. Drag the values on the left to the corresponding descriptions on the right.

Explanation:

# Debug Logs on R2:
nginx
CopyEdit
Received OPEN from 10.0.1.1...
Router ID: 10.0.1.1, AS: 100
Received OPEN from 10.0.2.2...
Router ID: 10.0.2.2, AS: 200
* The OPEN message exchanged during BGP neighbor establishment contains:
* Router ID of the peer
* AS number
* Hold time
* Capabilities
From the logs:
* R2 received R1's OPEN message with:
* Router ID = 10.0.1.1
* AS = 100
* R2 ' s own OPEN message shows:
* Router ID = 10.0.2.2
* AS = 200
This gives us the exact matching required.
Official Huawei Extract:
" In BGP, the OPEN message contains the router ID and AS number of the sender. These values are exchanged during session establishment and are visible via debugging logs or display bgp peer outputs. "
- [Huawei HCIA-Datacom Guide - BGP Peer Establishment and Debugging]

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.

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. "

An administrator runs the display mpls Isp command to view LSPs on a device. The command output is shown in the figure. Which of the following statements are true?

• A. For the traffic destined for 1.1.1.1, the device is the last hop, that is, the egress device.
• B. For the traffic destined for 3.3.3.3, the device is the penultimate transit device.
• C. Traffic sent from GEO/0/1 of the device to 3.3.3.3 does not carry any label.
• D. Traffic sent from GE0/0/0 of the device to 1.1.1.1 carries label 1026.

The figure shows the logical network architecture of a migration project . The purpose of the migration is to add network device R4 between R2 and R3 .
* OSPF runs between network devices.
* After the physical network is connected , a network engineer incorrectly imports the backup configuration of R3 to R4 during the migration .
Given this, which of the following statements are true?

Options:

• A. An OSPF neighbor relationship can be established between R2 and R4.
• B. An OSPF neighbor relationship can be established between R1 and R3.
• C. An OSPF neighbor relationship can be established between R3 and R4.
• D. The OSPF neighbor relationship between R1 and R2 is not affected.

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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?

• A. Changing the mode of importing routes to BGP from network mode to import mode in batches
• B. Modifying the description of router interfaces in batches
• C. Changing the levels of IS-IS Level-1-2 routers to Level-1 in batches
• D. Changing the area type of some OSPF routers to the stub area in batches