The following figure shows the BGP state switching mechanism. Drag the following BGP states to the corresponding sequence numbers.

Correct Answer:

Explanation:
* 1 - Idle
* 2 - Connect
* 3 - OpenSent
* 4 - OpenConfirm
* 5 - Established
* 6 - Active
The BGP finite state machine defines how a BGP speaker transitions through various states when establishing and maintaining a BGP session. Below is the role of each state:
* Idle (1) - BGP is waiting to start a connection. Initial state of the BGP process.
* Connect (2) - BGP initiates a TCP connection to the peer.
* OpenSent (3) - TCP connection is established; BGP sends an OPEN message and waits for one from the peer.
* OpenConfirm (4) - BGP has received a valid OPEN message and is now expecting a KEEPALIVE.
* Established (5) - BGP session is fully established; UPDATE messages can now be exchanged.
* Active (6) - If the TCP connection fails in Connect state, BGP transitions to Active and will retry connection.
Reference from Huawei HCIP-Datacom-Core Technology Study Guide:
"BGP goes through the following states in order: Idle # Connect # Active # OpenSent # OpenConfirm # Established. The transition depends on the success or failure of TCP connection setup and BGP message exchanges." (Chapter: BGP Principles - Section: BGP State Machine)

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Which of the following descriptions of AS attributes in BGP is incorrect?

• A.In order to avoid routing loops that may be caused by routing tickets, B6P designed the AS-Set attribute.
• B.When the GP Speaker advertises this route to the TBGP peer, the AS_Path attribute related to this route will not be changed.
• C.AS_Path is a recognized attribute that must be followed
• D.AS-Set attribute is an ordered AS-Path attribute

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Which of the following descriptions of the advantages of IPv6 are correct? (Multiple choice)

• A.The header format is flexible and has multiple extension headers
• B.Added support for automatic address configuration, enabling stateless automatic address configuration.
• C.The underlying layer itself carries security features
• D.The routing table will be larger than IPv4 and the addressing will be more precise.

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As shown in the figure, SWA, SWB, SWC, and SWD run the Rapid Spanning Tree Protocol (RSTP). Which of the following statements are true?

• A.Once receiving OPOUs, the edge port re-partlci pates in the calculation of the spanning tree.
• B.After a port is Configured as an edge port, the port can quickly enter the Forwarding state.
• C.You can enable the edge port on SWD's GEO/0/2 connected to the terminal so that this port can quickly enter the Forwarding state.
• D.You can enable the edge port on SWC's GE0/0/2 connected to the terminal so that this port can quickly enter the forwarding state.

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Which of the following statements regarding the display bgp routing-table command output is true?

• A.The route to the destination address 192.168.1.0 is learned through AS 200.
• B.The MED value of the route to the destination address 192.168.1.0 is 100.
• C.The route to the destination address 192.168.1.0 is not the optimal route in the BGP routing table.
• D.The route to the destination address 192.168.1.0 is injected into the BGP routing table using the network command.

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