PCNE Implementing VPC Instances Practice Question
What is the default Maximum Transmission Unit (MTU) for Compute Engine virtual machines?
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
✓
1460
GCP uses an MTU of 1460 for both VMs and the underlying network infrastructure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
1460
Why this is correct
1460 is the default MTU for Compute Engine instances.
- ✗
1500
Why it's wrong here
1500 is common in on-premises networks but not in GCP.
- ✗
9001
Why it's wrong here
9001 is jumbo frames, not default.
- ✗
1400
Why it's wrong here
1400 is used for VPN tunnels, not default VM networking.
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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.