AWS Networking and Pricing Concepts

What is a Virtual Private Cloud (VPC) in AWS?

• A Virtual Private Cloud (VPC) is a public network shared by multiple users.

• A Virtual Private Cloud (VPC) is a logically isolated section of the AWS cloud for launching AWS resources in a defined virtual network.

• A Virtual Private Cloud (VPC) is a physical server located in a data center.

• A Virtual Private Cloud (VPC) is a type of AWS storage service.

Which AWS service allows you to create a logically isolated network?

• Amazon S3

• AWS Lambda

• Amazon VPC

• Amazon RDS

What are the main components of a VPC?

• Virtual Private Network (VPN) configurations

• The main components of a VPC are subnets, route tables, internet gateways, NAT gateways, security groups, and network ACLs.

• Load balancers and firewalls

• Database instances and storage volumes

Explain the difference between public and private subnets.

• Public subnets are used for storing sensitive data.

• Public subnets allow direct internet access; private subnets do not.

• Public subnets are more secure than private subnets.

• Private subnets can be accessed directly from the internet.

What is subnetting and why is it important in networking?

• Subnetting is the practice of dividing a network into smaller sub-networks to improve management, security, and performance.

• Subnetting is the process of merging multiple networks into one large network.

• Subnetting is a method to increase the physical size of a network.

• Subnetting is only used for wireless networks to enhance signal strength.

How does AWS charge for data transfer in and out of a VPC?

• AWS charges for both data transfer in and out of a VPC.

• AWS charges only for data transfer in to a VPC.

• AWS charges for data transfer out of a VPC, while data transfer in is usually free.

• Data transfer in and out of a VPC is always free.

What is the purpose of a route table in a VPC?

• To store user data in a VPC.

• To manage security groups in a VPC.

• To allocate IP addresses to instances in a VPC.

• To direct network traffic within a VPC and to external networks.

Define stateless and stateful in the context of networking.

• Stateless: maintaining context across requests; Stateful: independent requests without context.

• Stateless: requests with stored context; Stateful: independent requests without context.

• Stateless: requests that require a session; Stateful: requests that do not require a session.

• Stateless: independent requests without stored context; Stateful: requests with maintained context across interactions.

What is the difference between a stateful and a stateless firewall?

• A stateful firewall is faster than a stateless firewall.

• A stateful firewall tracks connection states, while a stateless firewall treats each packet independently.

• A stateless firewall can track connection states.

• Both firewalls operate on the same principles of packet filtering.

What are the different AWS pricing models available?

• Annual Billing

• Pay-As-You-Go

• Monthly Subscription

• On-Demand Pricing, Reserved Instances, Spot Instances, Savings Plans, Free Tier