Interview Questions and Answers for 'T' | Search Interview Question

Interview Questions and Answers - Order By Rating

Q391. Can a EC2 instance have multiple Security Groups ? Can a single security group be assigned to multiple Ec2 instances ? If either of them is true , doesn't it result in conflict ?

Amazon Web Services (AWS)

Ans. We can assign multiple security groups to single instance and we can use single security group with multiple instances.

It never results in conflict as security groups only have allow rules and no deny rules. Multiple security groups for an instance results in union of all rules.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws security group}

Q392. Which AWS service can be used to monitor EC2 ?

Amazon Web Services (AWS)

Ans. CloudWatch

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws cloudwatch amazon cloudwatch}

Q393. What is the difference between EC2 System status check and Instance status check ?

Amazon Web Services (AWS)

Ans. System status check is to check if the power or network is working whereas Instance status check goes further and make sure that traffic is going through.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q394. Can we protect EC2 instances from terminating accidentally ?

Amazon Web Services (AWS)

Ans. Yes

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q395. Difference between EC2 instance public and private key ?

Amazon Web Services (AWS)

Ans. public key is used for locking whereas private key is used for unlocking. public key can be used for locking multiple instances and hence can be shared.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q396. How have you configured Security Groups ?

Amazon Web Services (AWS)

Ans. AWS console >> security groups >> Create security group >> Configure security group bases on Network requirement of EC2 instance

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws security group}

Q397. Does attached EBS volume get deleted if we terminate EC2 instance ?

Amazon Web Services (AWS)

Ans. By default, Root volume gets terminated whereas additional volume doesn't.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ebs aws ebs volume aws ec2 aws computing amazon cloud computing amazon ec2}

Q398. What are the things to consider while provisioning computing in AWS ?

Amazon Web Services (AWS)

Ans. Service ( EC2, Lambda etc )
AMI ( Operating System and Softwares )
Instance Type ( T,M, R etc )
EBS ( Volume Type , Size )
Price Class ( OnDemand, Dedicated etc )

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws computing}

Q399. Difference between List and ArrayList ?

Core Java

Ans. List is an interface whereas ArrayList is an implementation of List.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve list arraylist list vs arraylist difference between collections Asked in 2 Companies basic}

Q400. What is the name of DNS service provided by AWS ?

Amazon Web Services (AWS)

Ans. Route 53

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve AWS DNS aws Route 53 Asked in 4 Companies}

Q401. Use Case for S3 RRS ?

Amazon Web Services (AWS)

Ans. If Back up is not needed and can be restored from another storage.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws s3 aws storage amazon cloud storage amazon s3 aws s3 aws storage amazon cloud storage amazon s3 rrs}

Q402. How can EBS Volumes be backed up ?

Amazon Web Services (AWS)

Ans. Through Snapshots

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ebs aws volumes aws computation}

Q403. Which AWS services provide automated backups ?

Amazon Web Services (AWS)

Ans. RDS, RedShift and Elastic Cache

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws automated backups aws RDS aws Redshift aws backup}

Q404. What is the use case for AWS Gateway cached , stored and VTL ?

Amazon Web Services (AWS)

Ans. AWS Cached - Low Availability than AWS Stored, Lower cost than AWS Stored

AWS Stored - High Availability, High Local Storage Cost

AWS VTL - S3 Used as Back up only.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws gateway aws gateway cached aws gateway stored aws gateway vtl}

Q405. Import / Export can import data set from ..

Amazon Web Services (AWS)

Ans. S3, EBS and Glacier

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws import / export aws s3 aws storage amazon cloud storage amazon s3 aws ebs aws glacier}

Q406. Can we change the instance Type while it's running ?

Amazon Web Services (AWS)

Ans. No

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q407. Which is the most common EC2 instance Type ?

Amazon Web Services (AWS)

Ans. T and M

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws ec2 aws computing amazon cloud computing amazon ec2 instance type}

Q408. What are the factors on which price classes are based on in case of EC2, S3, CloudFront and EBS ?

Amazon Web Services (AWS)

Ans. EC2 - Time and Reservation , Instance Type ( Memory , Computation power )
S3 - Accessibility Frequency , Data Transfer , Storage Space
CloudFront - Geography, No of Locations
EBS - IOPS, Access Frequency

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws s3 aws storage amazon cloud storage amazon s3 aws cloudfront amazon cloudfront aws ebs}

Q409. What is the use case for Geo Targeting / Price Class within AWS CloudFront ?

Amazon Web Services (AWS)

Ans. Saving cost by optimizing content retrieval or upload in certain Geographies.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws cloudfront amazon cloudfront aws cloudfront amazon cloudfront geo targeting}

Q410. What is the need of S3 Transitioning ?

Amazon Web Services (AWS)

Ans. Saving Cost by either expiring objects or moving to low cost storage.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws s3 aws storage amazon cloud storage amazon s3 transitioning}

Q411. What is the use case of S3 Cross Region replication ?

Amazon Web Services (AWS)

Ans. Disaster Recovery and availability

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws s3 aws storage amazon cloud storage amazon s3 aws s3 aws storage amazon cloud storage amazon s3 cross region replication}

Q412. What is the use case of AWS CloudFront ?

Amazon Web Services (AWS)

Ans. Faster availability and uploading of files and content.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws cloudfront amazon cloudfront}

Q413. Which EBS Volume type cannot be used as a root volume ?

Amazon Web Services (AWS)

Ans. Throughput Optimal HDD and Cold HDD

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ebs aws root volume}

Q414. What are the drawbacks of using Spot EC2 instances ?

Amazon Web Services (AWS)

Ans. You cannot reserve the time slot and they can be made to use whenever they are available.

AWS can Terminate the EC2 instance on their own even if it's in use.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws ec2 aws computing amazon cloud computing amazon ec2 spot}

Q415. What are the different EC2 instance types ?

Amazon Web Services (AWS)

Ans. F,I,G,H,T,D,R,M,C,P,X

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 aws ec2 aws computing amazon cloud computing amazon ec2 instance type}

Q416. Can we have EBS Volumes in S3 ?

Amazon Web Services (AWS)

Ans. No , S3 is an object storage and not a Block Storage. But EBS Volume snapshots are internally stored in S3.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws s3 aws storage amazon cloud storage amazon s3 aws ebs}

Q417. If you override hashcode to always return true, how a hash based collection will behave?

Core Java

Ans. At that bucket, it will form a linked list depending on what equals method evaluates for that object.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve hashcode collections Asked in 2 Companies}

Q418. Which is the cheapest EC2 instance type ?

Amazon Web Services (AWS)

Ans. T

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2 instance type}

Q419. Which EC2 instance type should be used if the application is memory intensive ?

Amazon Web Services (AWS)

Ans. R4

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws ec2 aws computing amazon cloud computing amazon ec2}

Q420. Which AWS services would you use if you have find a cheapest solution for an analytics application ?

Amazon Web Services (AWS)

Ans. Computation

Spot Price Plan
F1 or P3 Instance Type
Cold Hdd (SCI ) EBS Volume

Storage

S3-IA

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve aws computation aws ec2 aws computing amazon cloud computing amazon ec2}

Search Interview Questions

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.