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Designing, Planning, and Prototyping a GCP Network →hardMultiple ChoiceObjective-mapped

PCNE Practice Question: Designing, Planning, and Prototyping a GCP Network

A company is using a Classic VPN with static routing to connect to GCP. They need to add a new subnet in GCP and make it reachable from on-premises without manual configuration changes on-premises. What is the limitation of Classic VPN in this scenario?

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

✓

Classic VPN requires manual route updates on-premises

Classic VPN with static routing requires manual route updates; dynamic routing (BGP) is needed for automatic route advertisement.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Classic VPN does not support IKEv2

    Why it's wrong here

    IKEv2 is supported by Classic VPN, but that's not the issue.

  • ✗

    Classic VPN supports BGP, so routes are automatically advertised

    Why it's wrong here

    Classic VPN supports only static routing or policy-based routing, not BGP.

  • ✓

    Classic VPN requires manual route updates on-premises

    Why this is correct

    Since Classic VPN uses static routing, new GCP subnets require adding static routes on-premises.

  • ✗

    Classic VPN cannot be used with multiple subnets

    Why it's wrong here

    It can, but routes must be manually added.

Visual reference

192.168.1.0 /24 256 addresses (254 usable) 192.168.1.0 /25 Subnet A 128 addr (126 usable) 192.168.1.128 /25 Subnet B 128 addr (126 usable) Borrowing 1 bit from host portion creates 2 subnets (/25)

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This PCNE practice question is part of Courseiva's free Google Cloud 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 PCNE exam.