# Module 5 Knowledge Check

1. With Amazon Virtual Private Cloud (Amazon VPC), what is the smallest size subnet you can have in a VPC? (Select the best answer.)
- [X] /28
- [ ] /26
- [ ] /24
- [ ] /30

2. With Amazon Virtual Private Cloud (Amazon VPC), what is the maximum size IP address range you can have in a VPC? (Select the best answer.)
- [ ] /28
- [ ] /30
- [X] /16
- [ ] /24

3. You need to allow resources in a private subnet to access the internet. Which of the following must be present to enable this access? (Select the best answer.)
- [ ] Security groups
- [ ] Route tables
- [X] NAT gateway
- [ ] Network access control lists

4. Which AWS networking service enables a company to create a virtual network within AWS? (Select the best answer.)
- [ ] AWS Direct Connect
- [ ] Amazon Route S3
- [X] Amazon Virtual Private Cloud (Amazon VPC)
- [ ] AWS Config

5. True or False? Private subnets have direct access to the internet.
- [ ] True
- [X] False

6. Which component of AWS Global Infrastructure does Amazon CloudFront use to ensure low-latency delivery? (Select the best answer.)
- [ ] Amazon Virtual Private Cloud (Amazon VPC)
- [ ] AWS Regions
- [ ] AWS Availability Zones
- [X] AWS edge locations

7. Which of the following is an optional security control that can be applied at the subnet layer of a VPC? (Select the best answer.)
- [X] Network ACL
- [ ] Firewall
- [ ] Security group
- [ ] Web application firewall

8. What happens when you use Amazon Virtual Private Cloud (Amazon VPC) to create a new VPC? (Select the best answer.)
- [ ] Three subnets are created by default in one Availability Zone.
- [ ] Three subnets are created by default: one for each Availability Zone.
- [X] A main route table is created by default.
- [ ] An internet gateway is created by default.

9. Which of the following can be used to protect Amazon Elastic Compute Cloud (Amazon EC2) instances hosted in AWS? (Select the best answer.)
- [ ] AMI
- [ ] Internet Gateway
- [ ] All of the above
- [X] Security group

10. You are a solutions architect who works at a large retail company that is migrating its existing infrastructure to AWS. You recommend that they use a custom VPC. When you create a VPC, you assign it to an IPv4 CIDR block of 10.0.1.0/24 (which has 256 total IP addresses). How many IP addresses are available? (Select the best answer.)
- [ ] 256
- [ ] 246
- [ ] 250
- [X] 251