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350-401 Practice Question: Which two statements about BGP neighbor states…
Which two statements about BGP neighbor states are true? (Choose two.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
In the Idle state, BGP is waiting for a start event before initiating a TCP connection.
The BGP neighbor state machine includes Idle, Connect, Active, OpenSent, OpenConfirm, and Established. In the Idle state, BGP does not initiate any connection and may be waiting for a start event. In the Active state, BGP is actively trying to establish a TCP connection. In the Established state, BGP has successfully formed a peering session and is exchanging routing updates. The OpenSent state is when BGP has sent an OPEN message and is waiting for an OPEN message from the peer. The Connect state is when BGP is waiting for the TCP connection to complete.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
In the Idle state, BGP is waiting for a start event before initiating a TCP connection.
Why this is correct
Correct: Idle is the initial state; BGP does not initiate a TCP connection until a start event (e.g., neighbor configuration) occurs.
- ✓
In the Active state, BGP is actively trying to establish a TCP connection with the neighbor.
Why this is correct
Correct: In Active state, BGP has failed to establish a TCP connection and is actively retrying.
- ✗
In the Established state, BGP has sent an OPEN message but has not yet received an OPEN message from the peer.
Why it's wrong here
Incorrect: That describes the OpenSent state, not Established. In Established, both OPEN messages have been exchanged and the session is up.
- ✗
In the OpenSent state, BGP is waiting for the TCP connection to complete.
Why it's wrong here
Incorrect: Waiting for TCP connection completion is the Connect state. OpenSent occurs after the TCP connection is established and an OPEN message has been sent.
- ✗
In the Connect state, BGP is actively trying to establish a TCP connection.
Why it's wrong here
Incorrect: In Connect state, BGP is waiting for the TCP connection to complete; if it fails, it moves to Active. Active is the state where BGP is actively trying.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.