Question 1

In Google Cloud, what is the minimum number of IP addresses that a VM instance needs?

🟩 One: Only an internal IP address
❌ Two: One internal and one external IP address
❌ Three: Internal + external + alias IP

Explanation:

A VM must have an internal IP.
An external IP is optional, not required.

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Question 2

What are the three types of networks offered in Google Cloud?

❌ Zonal, regional, and global
❌ Gigabit, 10G, 100G
🟩 Default network, auto network, and custom network
❌ IPv4 unicast, multicast, IPv6

Explanation:

Google Cloud provides three network configuration types:

• Default network (pre-created with default subnets)

• Auto mode network (auto-created subnets per region)

• Custom mode network (fully user-controlled)

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Question 3

What is one benefit of applying firewall rules by tag instead of by address?

🟩 When a VM is created with a matching tag, the firewall rules apply regardless of its IP address.
❌ Tags track firewall billing
❌ Tags help with network sniffing
❌ Tags control which ephemeral IPs VMs get

Explanation:

Firewall network tags attach policies to VM identity, not IPs.
This makes security rules easier, especially when IPs change.

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🧾 Summary Table

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