Q1 — Default VPC limit

What is the default maximum number of VPCs allowed per AWS region per account?

• A. 2
• B. 5
• C. 10
• D. 20
• Correct answer:

Q2 — CIDR addressing: VPC

A VPC has a CIDR block of 10.0.0.0/16. How many total IP addresses are in this address space?

• A. 254
• B. 256
• C. 65,536
• D. 65,534
• Correct answer:

Q3 — CIDR addressing: subnet

A subnet has a CIDR of 10.0.1.0/24. How many IP addresses are available for EC2 instances?

• A. 256
• B. 254