Amazon Web Services (AWS) - Interview Questions and Answers for 'Web Service' | Search Interview Question

Interview Questions and Answers - Order By Newest

Q91. Which components of AWS are you using in your project ?

Ans. We are using EC2 and Lambda for computing, RDS for Database , S3 for Storage , SQS and Kinesis for streaming and queue and CloudWatch for monitoring.

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Q92. Can we have contracts like WSDL with Rest Services ?

Web Service

Ans. Yes, we can have WADL to specify the contract but unlike SOAP , the usage is optional.

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Q93. Is ICICI netbanking using webservices?

Web Service

Ans. Yes

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Q94. What is the difference between Reserved and On Demand instance ?

Amazon Web Services (AWS)

Ans. On demand instance is normal instance means if you create first time so you can use on demand instance, in this instance you can create simple server like 2 gb RAM, 1 core CPU, GP2 30 GB SSD....etc.

and Reserved instance is you can create server and its reserved for 2-3 years and when you give back to this server on AWS they give you discount but on demand and reserved instance price are same.

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Q95. What is EC2 and EC2 instance ?

Amazon Web Services (AWS)

Ans. EC2 is elastics compute cloud is one of the amazon service and ec2 instance is one type of virtual server which you create from AMI.

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Q96. What are the various security and access services provided by AWS ?

Amazon Web Services (AWS)

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Q97. What are some of the computation services provided by AWS ?

Amazon Web Services (AWS)

Ans. EC2, EKS, EKC , Lambda

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Q98. Tell me something about Amazon Lambda.

Amazon Web Services (AWS)

Ans. AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services. It is a computing service that runs code in response to events and automatically manages the computing resources required by that code. It was introduced in November 2014.

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Q99. What are some of the storage and database services provided by AWS ?

Amazon Web Services (AWS)

Ans. Storage - S3, Glacier
Database - RDS, DynamoDB

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Q100. Difference between Amazon RDS and Amazon DynamoDB ?

Amazon Web Services (AWS)

Ans. Amazon RDS provides relational database services whereas DynamoDb provide No SQL database services.

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Q101. What is the difference between AWS Gateway API and Lambda ?

Amazon Web Services (AWS)

Ans. AWS API Gateway is the endpoint URI to get invoke. Whereas Lambda is the compute function being invoked from API Gateway or S3 or SNS

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Q102. Can we build web services using AWS Lambda ?

Amazon Web Services (AWS)

Ans. We have to complement it to AWS Gateway API.

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Q103. What are the benefits of using AWS Lambda over EC2 ?

Amazon Web Services (AWS)

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Q104. Can we reserve resources in AWS Lambda just like we do for Ec2 instances ?

Amazon Web Services (AWS)

Ans. You can have reserved capacity with AWS Lambda. This guarantees that this number of concurrent Lambdas are always available for that function.

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Q105. What are micro services ?

Web Service

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Q106. What is the use of put() method in Restful webservices ?

Web Service

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Q107. How to consume services using Restful web services?

Web Service

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Q108. How to know IP of the machine where lambda function runs ?

Amazon Web Services (AWS)

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Q109. What should we do If we need to know the IP of the machine where Lambda function runs ?

Amazon Web Services (AWS)

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Q110. How to assign a static or IP range to Lambda Function ?

Amazon Web Services (AWS)

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Q111. Can you give an example of a Get and Post Request.

Web Service

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Q112. What are you using AWS lambda for ?

Amazon Web Services (AWS)

Ans. We are using it for computation (EC2) , Storage (S3) and Database (RDS)

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Q113. What are you using AWS lambda for ?

Amazon Web Services (AWS)

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Q114. If SOAP is more secure than Rest, Why many applications today use Rest ?

Web Service

Ans. SOAP supports only xml whereas Rest support many other formats.

Rest services are very light weight compared to SOAP.

SOAP services are code heavy as they require creation. of stubs and skeltons.

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Q115. If a high CPU Usage happens everyday at a particular time, How would you go about fixing it ?

Server

Ans. We can provision more instances for that particular time slot.

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Q116. Why AWS is better than Azure ?

Cloud Computing

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Q117. Have you ever worked on migrating AWS services and databases from one account to another ?

Amazon Web Services (AWS)

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Q118. Do you know how can we export Redis data ?

Redis

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Q119. What is Bastion host ?

Infrastructure

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Q120. How do you usually choose which type of EC2 Instance you would like to Use ?

Amazon Web Services (AWS)

Ans. Depend on its pricing module

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