Question:- Difference between Stopping and Terminating the instances?
Answer:- - Stopping: You can stop an EC2 instance and stopping an instance means shutting down the instance. Its corresponding EBS volume is still attached to an EC2 instance, so you can restart the instance as well. - Terminating: You can also terminate the EC2 instance and terminating an instance means you are removing the instance from your AWS account. When you terminate an instance, then its corresponding EBS is also removed. Due to this reason, you cannot restart the EC2 instance.
Question:- How many Elastic IPs can you create?
Answer:- 5 elastic IP addresses that you can create per AWS account per region.
Question:- What is a Load Balancer?
Answer:- Load Balancer is a virtual machine that balances your web application load that could be Http or Https traffic that you are getting in. It balances a load of multiple servers so that no web server gets overwhelmed.
Question:- What is VPC?
Answer:- VPC stands for Virtual Private Cloud. It is an isolated area of the AWS cloud where you can launch AWS resources in a virtual network that you define. It provides a complete control on your virtual networking environment such as selection of an IP address, creation of subnets, configuration of route tables and network gateways.
Question:- What is VPC peering connection?
Answer:- - A VPC peering connection is a networking connection that allows you to connect one VPC with another VPC through a direct network route using private IP addresses. - By using VPC peering connection, instances in different VPC can communicate with each other as if they were in the same network. - You can peer VPCs in the same account as well as with the different AWS account
Question:- What are NAT Gateways?
Answer:- NAT stands for Network Address Translation. It is an aws service that enables to connect an EC2 instance in private subnet to the internet or other AWS services.
Question:- How can you control the security to your VPC?
Answer:- You can control the security to your VPC in two ways: - Security Groups It acts as a virtual firewall for associated EC2 instances that control both inbound and outbound traffic at the instance level. To know more about Security Groups, click on the link given below: Click Here - Network access control lists (NACL) It acts as a firewall for associated subnets that control both inbound and outbound traffic at the subnet level.
Question:- What is Redshift?
Answer:- - Redshift is a fast, powerful, scalable and fully managed data warehouse service in the cloud. - It provides ten times faster performance than other data warehouse by using machine learning, massively parallel query execution, and columnar storage on high-performance disk. - You can run petabytes of data in Redshift datawarehouse and exabytes of data in your data lake built on Amazon S3.
Question:- What is SNS?
Answer:- SNS stands for Simple Notification Service. It is a web service that provides highly scalable, cost-effective, and flexible capability to publish messages from an application and sends them to other applications. It is a way of sending messages.
Question:- What is the maximum size of messages in SQS?
Answer:- The maximum size of message in SQS IS 256 KB.
Question:- What are the two types of access that you can provide when you are creating users?
Answer:- There are two types of access: - Console Access: If the user wants to use the Console Access, a user needs to create a password to login in an AWS account. - Programmatic access: If you use the Programmatic access, an IAM user need to make an API calls. An API call can be made by using the AWS CLI. To use the AWS CLI, you need to create an access key ID and secret access key.
Question:- What is subnet?
Answer:- When large section of IP address is divided into smaller units is known as subnet. A Virtual Private Cloud (VPC) is a virtual network provided to your AWS account. When you create a virtual cloud, you need to specify the IPv4 addresses which is in the form of CIDR block. After creating a VPC, you need to create the subnets in each availability zone. Each subnet has a unique ID. When launching instances in each availability zone, it will protect your applications from the failure of a single location.
Question:- Differences between Amazon S3 and EC2?
Answer:- - S3: - It is a storage service where it can store any amount of data. - It consists of a REST interface and uses secure HMAC-SHA1 authentication keys. - EC2: - It is a web service used for hosting an application. - It is a virtual machine which can run either Linux or Windows and can also run the applications such as PHP, Python, Apache or other databases.
Question:- Can you establish a peering connection to a VPC in a different region?
Answer:- No, its not possible to establish a peering connection to a VPC in a different region. Its only possible to establish a peering connection to a VPC in the same region.
