Top 25 Interview questions of AWS

Q9.What is an EIP?

The Elastic IP address (EIP) is a static Ipv4 address offered by AWS to manage dynamic cloud computing services. Connect your AWS account with EIP so that if you want a static IPv4 address for your instance, you can be associated with the EIP which enables communication with the internet. 

Q10.What is the default storage class in S3?

The default storage class is Standard Frequently Accessed.

Q11.What is Redshift?

• 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.

Q12.What is the importance of buffer in Amazon Web Services?

An Elastic Load Balancer ensures that the incoming traffic is distributed optimally across various AWS instances.  A buffer will synchronize different components and makes the arrangement additionally elastic to a burst of load or traffic. The components are prone to work in an unstable way of receiving and processing requests. The buffer creates an equilibrium linking various apparatus and crafts them work at an identical rate to supply more rapid services.

Q13.What are the different AWS IAM categories that you can control?

Using AWS IAM, you can do the following:

• Create and manage IAM users
• Create and manage IAM groups
• Manage the security credentials of the users
• Create and manage policies to grant access to AWS services and resources

Q14.What are the types of queues in SQS?

There are two types of queues in SQS. They are as follows:

Standard Queues: It is a default queue type. It provides an unlimited number of transactions per second and at least one message delivery option. 

FIFO Queues: FIFO queues are designed to ensure that the order of messages is received and sent is strictly preserved as in the exact order that they sent.

Q15.What are the two types of access that you can provide when you are creating users?

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.

Q16.Benefits of AWS’s disaster recovery?

The AWS cloud supports many admired disaster recovery architectures ranging from little customer workload data centre failures to environments that allow rapid failover at scale. With data centres all over the globe, AWS provides a position of cloud-based disaster recovery services that permit fast recovery of your IT infrastructure and data.

Q17.What is AWS SNS?

Amazon Simple Notification Service (Amazon SNS) is a push notification service used in sending individual messages to a big group of mobile or email subscriber systems including Amazon SQS queues, AWS Lambda functions, and HTTPS endpoints. It is both application-to-application (A2A) and application-to-person (A2P) communication.

Q18.What is DynamoDB?

DynamoDB is a NoSQL database. It is very flexible and performs quite reliably – and can be integrated with AWS! It offers fast and predictable performance with seamless scalability. With the help of DynamoDB, you do not need to worry about hardware provisioning, setup, and configuration, replication, software patching, or cluster scaling.

Q19.List possible storage options for Amazon EC2 instance.

• Amazon Elastic Block Store (EBS)
• Amazon EC2 Instance Store
• Amazon Elastic File System (EFS)
• Amazon Simple Storage Service (S3)
• Amazon Glacier

Q20.What are the different types of routing policies that are available in Amazon route S3?

The various types of routing policies available are as follows:

• latency based
• Weighted
• Failover
• Simple
• Geolocation

Q21. How can an Amazon VPC be monitored?

One can control VPC by using the following:

• CloudWatch and CloudWatch logs
• VPC flow logs

Q22.What is SQS?

SQS stands for Simple Queue Service. SQS administers the message queue service. Either you can move the data or message from one application to another even though it is not in an active state. With the help of SQS, one can be sent between multiple services. 

Q23.What Are The Security Best Practices For Amazon Ec2 ?

Amazon EC2 best practices, follow the following steps:

• Use AWS identity and access management to control access to your AWS resources
• Restrict access by allowing only trusted hosts or networks to access ports on your instance
• Review the rules in your security groups regularly
• Only open up permissions that your require
• Disable password-based login, for instance, launched from your AMI Complete Amazon Web Services Tutorials

Q24.Explain How To Launch Ec2 Instance In An Availability Zone ?

Each region is completely independent and each Availability Zone is isolated. When you view your resources, you’ll only see the resources tied to the region you have specified.

To launch a EC2 instance, you must select an AMI that’s in the same region (if the AMI is in another region then you can copy the AMI to the region you are using). Now select an Availability Zone or let AWS choose for you. After creating the EC2 instance, it will show up in selected Availability Zone.

Q25.How To Create Key Pair ?

We can create one using the Amazon EC2 console. To launch instances in multiple regions, we’ll need to create a key pair in each region.