Google Professional Cloud Network Engineer exam dumps

Google Professional Cloud Network Engineer practice question 683 of 790

Professional Cloud Network Engineer. Professional level, Google Cloud. Free question with the correct answer and a full explanation.

Google Professional Cloud Network Engineer Question 683

Select 3Google Cloud Platform

You are configuring a hybrid network between your on-premises infrastructure and Google Cloud. The setup uses Cloud VPN with dynamic routing enabled through BGP. To enhance failure detection and improve convergence times, you want to implement Bidirectional Forwarding Detection (BFD). Which of the following steps are required to correctly configure BFD for your Cloud VPN tunnel?

  1. A

    Enable BFD support on both the on-premises router and the Cloud VPN tunnel.

  2. B

    Configure the BGP session to use a keepalive interval of 30 seconds on both the on-premises router and Cloud VPN tunnel.

  3. C

    Specify the desired BFD session parameters, such as minimum transmit and receive intervals, on both ends of the connection.

  4. D

    Ensure that dynamic routing is enabled on your Cloud VPN tunnel.

  5. E

    Use a static route configuration to enable BFD on the Cloud VPN tunnel.

Show answer and explanation

Correct answers: A, C, D

Explanation

Bidirectional Forwarding Detection (BFD) is a protocol used to quickly detect link failures and improve convergence times in dynamic routing setups. For BFD to work with Cloud VPN, it must be supported and enabled on both ends of the connection (on-premises router and Cloud VPN tunnel). Additionally, BFD session parameters must be configured, and dynamic routing (BGP) must be enabled, as static routes do not support BFD. BGP keepalive intervals are unrelated to BFD and do not need to be configured for its operation.

  • A. Correct.

    Correct. For BFD to function, it must be supported and enabled on both the on-premises router and the Cloud VPN tunnel.

  • B. Incorrect.

    Incorrect. BFD operates independently of BGP keepalive intervals, and the standard 30-second BGP keepalive interval is too long for fast failure detection.

  • C. Correct.

    Correct. BFD requires configuration of session parameters, such as minimum transmit and receive intervals, on both sides to ensure proper operation.

  • D. Correct.

    Correct. BFD is supported only when using dynamic routing (BGP) on Cloud VPN. Static routes do not support BFD configurations.

  • E. Incorrect.

    Incorrect. BFD is not supported with static routes; it is designed to work with dynamic routing protocols like BGP.

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