AWS Lambda Interview Questions

Question 1

What do you mean by AWS Lambda?

Answer 1

If you talk about a serverless compute service then AWS Lambda offers the best service. The codes can be run and managed without managing servers. You just pay for the consumption of data in computing. When you are idle you do not have to pay anything. Just an upload of code is needed and rest is managed by Lambda.

Question 2

Mention the time span in which the AWS Lambda function will execute.

Answer 2

All the process of AWS Lambda and execution takes place within 300 seconds from placing calls to AWS Lambda. The default timeout is 3 seconds rest you can setup any value between 1 to 300 seconds.

Question 3

Can Lambda be vertically scaled? If yes, how?

Answer 3

This is one of the most prominent features of AWS Lambda. When a larger instance is to be spin then we use vertical scaling. If there is scaling in use then it has to be paused and has to be detached from the server. The ID of new device post is to be noted down to continue the process.

Question 4

Mention the role of SQS in Lambda.

Answer 4

There is a certain approach which is used for sharing of information and passing that information among different hosts and connectors and communication can be established. The functional components could be connected even if they are different. There are many advantages of using SQS and several of the failures are eliminated.

Question 5

What are the Final variables?

Answer 5

Once assigned these variables cannot be changed. In its earlier stage, they are known as effective variables where any form of change is possible and the values are assigned to them. They also play an important role in testing. Most of the local expressions are final.

Question 6

How can performance be improved in Lambda?

Answer 6

There are some of the methods by which performance can be improved in Lambda. You can improve the performance by using Linux software RAID and with the help of RAID, we can be assured of better security.