Top 50 AWS Interview Questions & Answers
1) Explain what AWS is?
2) Mention what the key components of AWS are?
The key components of AWS are
- Route 53:A DNS web service
- Simple E-mail Service:It allows sending e-mail using RESTFUL API call or via regular SMTP
- Identity and Access Management:It provides enhanced security and identity management for your AWS account
- Simple Storage Device or (S3):It is a storage device and the most widely used AWS service
- Elastic Compute Cloud (EC2): It provides on-demand computing resources for hosting applications. It is handy in case of unpredictable workloads
- Elastic Block Store (EBS):It offers persistent storage volumes that attach to EC2 to allow you to persist data past the lifespan of a single Amazon EC2 instance
- CloudWatch: To monitor AWS resources, It allows administrators to view and collect key Also, one can set a notification alarm in case of trouble.
3) Explain what S3 is?
4) What is AMI?
5) Mention what the relationship between an instance and AMI is?
From a single AMI, you can launch multiple types of instances. An instance type defines the hardware of the host computer used for your instance. Each instance type provides different computer and memory capabilities. Once you launch an instance, it looks like a traditional host, and we can interact with it as we would with any computer.
6) What does an AMI include?
An AMI includes the following things
- A template for the root volume for the instance
- Launch permissions decide which AWS accounts can avail the AMI to launch instances
- A block device mapping that determines the volumes to attach to the instance when it is launched
7) How can you send a request to Amazon S3?
8) Mention what the difference between Amazon S3 and EC2 is?
The difference between EC2 and Amazon S3 is that
EC2 | S3 |
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9) How many buckets can you create in AWS by default?
10) Explain can you vertically scale an Amazon instance? How?
Yes, you can vertically scale on Amazon instance. For that
- Spin up a new larger instance than the one you are currently running
- Pause that instance and detach the root webs volume from the server and discard
- Then stop your live instance and detach its root volume
- Note the unique device ID and attach that root volume to your new server
- And start it again
11) Explain what T2 instances is?
12) In VPC with private and public subnets, database servers should ideally be launched into which subnet?
13) Mention what the security best practices for Amazon EC2 are?
For secure 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 you require
- Disable password-based login, for example, launched from your AMI
14) Explain how the buffer is used in Amazon web services?
15) While connecting to your instance what are the possible connection issues one might face?
The possible connection errors one might encounter while connecting instances are
- Connection timed out
- User key not recognized by the server
- Host key not found, permission denied
- An unprotected private key file
- Server refused our key or No supported authentication method available
- Error using MindTerm on Safari Browser
- Error using Mac OS X RDP Client
16) What are key-pairs in AWS?
17) What are the different types of instances?
Following are the types of instances:
- General purpose
- Computer Optimized
- Memory Optimized
- Storage Optimized
- Accelerated Computing
18) Is the property of broadcast or multicast supported by Amazon VPC?
19) How many Elastic IPs is allows you to create by AWS?
20) Explain default storage class in S3
21) What are the Roles?
22) What are the edge locations?
23) What is VPC?
24) Explain snowball
25) What is a redshift?
26) What are the advantages of auto-scaling?
Following are the advantages of autoscaling
- Offers fault tolerance
- Better availability
- Better cost management
27) What is meant by subnet?
28) Can you establish a Peering connection to a VPC in a different region?
29) What is SQS?
30) How many subnets can you have per VPC?
31) DNS and Load Balancer service comes under which type of cloud service?
32) What is the role of AWS CloudTrail?
33) When EC2 officially launched?
34) What is SimpleDB?
35) Explain Amazon ElasticCache
36) What is AWS Lambda?
37) Name the types of AMI provided by AWS
The types of AMI provided by AWS are:
- Instance store backed
- EBS backed
38) Name the AWS service exists only to redundantly cache data and images?
39) Explain Geo Restriction in CloudFront
40) What is Amazon EMR?
41) What is boot time taken for the instance stored backed AMI?
42) Do you need an internet gateway to use peering connections?
43) How to connect EBS volume to multiple instances?
44) List different types of cloud services
Various types of cloud services are:
- Software as a Service (SaaS),
- Data as a Service (DaaS)
- Platform as a Service (PaaS)
- Infrastructure as a Service (IaaS).
45) State the difference between An Instance and AMI
46) What are the different types of Load Balancer in AWS services?
Two types of Load balancer are:
- Application Load Balancer
- Classic Load Balancer
47) In which situation you will select provisioned IOPS over standard RDS storage?
48) What are the important features of Amazon cloud search?
Important features of the Amazon cloud are:
- Boolean searches
- Prefix Searches
- Range searches
- Entire text search
- AutoComplete advice
49) Can vertically scaling is allows in Amazon Instance?
50) What is the use of lifecycle hooks in Autoscaling?
51) What are various layers of Cloud Architecture explained in AWS training?
Different layers of cloud architecture are:
- Cloud controller
- Cluster controller
- Storage Controller
- Node Controller
52) What are the storage class available in Amazon s3?
Storage classes available with Amazon s3 are:
- Amazon S3 standard
- Amazon S3 standard-infrequent Access
- Amazon S3 Reduced Redundancy Storage
- Amazon Glacier
53) Name some of the DB engines which can be used in AWS RDS
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nice,thnak u very much and i want to more interview questions on aws
Good questions . Thanks a lot!
Very good thank you for nice explanation.
Question 46, types of load balancer… I think 3 types of load balancer… Application , network and classic
thank you, very use full questions.
One correction peering connection is possible in different reason
Thanks for writing. It is reviewed and updated.
Very very nice and good explanation..we need more questions on aws that can helpful for us..Thank you in Advance !..
Thanks so much for your interview questions on AWS. It is very helpful. Could you please upload scenario based questions and step by step process wise scenarios. It would be more helpful. Greatly appreciate. Thanks in advance..
this interview question is very use full to me
Answer is incorrect for “Can you establish a Peering connection to a VPC in a different region?”
you can establish a peering connect across regions and accounts, it is possible.
Thanks for writing. It is reviewed and updated.
thank you very helpfull
I want to more aws questions pls provide
Thank you very much nice explanation
Thank you very much nice explanation
Good questions . Thanks a lot!
any one can explain about Peering connection
well questions for revise subject but better to provide analitical questions on aws…
Good Questions Thanks, but answers can be better described in a bit better English.
Very good understanding and clear explanation.
For question no 28 – We can establish peering connection between VPCs in different regions.
Thanks for writing. It is updated.
Q28 VPC Peering between different regions is wrong. AWS allows for VPC peering where the VPC’s are in different regions.
Also, Q29, SQL – I think you meant SQS – Simple Queue Service.
Thanks for writing. It is reviewed and updated.
I completed cloud aws beginner level course in udemy. Can you please guide me where to start learning for associate level. Also it will be very great to know any coaching centre suggestions. Thank you in advance
Very good thank you for nice explanation.
28) Can you establish a Peering connection to a VPC in a different region?
No, It’s only possible between VPCs in the same region.
Yes we can create vpc peering from one region to another region and also
one account to another account
Thanks for writing. It is updated.
29) question needs correction- It should be – What is SQS*
Thanks for writing. It is corrected.
Answer of the question no 28. Is wrong. You can create peering connection between two different regions. Please review this answer of this question what I mentioned.
Thanks…
Thanks for writing. It is reviewed and updated.
Thanks for compiling the list of questions. A quick observation – the content seems to be outdated.
Good content
Thanks alot
I appreciated all of the information. I’d recommend proofreading as there are a number of grammatical mistakes.
yes a number of key mistakes; also, some out of date items, get in touch with me and I will be happy to partner with you and clean it up?
Excellent bunch of questions & answers , very helpful
que no. 28 VPCs across accounts and AWS Regions can also be peered together
que. no. 29 it is SQS not SQL.
Hi, thanks for writing and drawing attention. Both the questions are reviewed and updated.
Wonderful explanation, looking forward for more quizes
Brilliant information, thanks much……
Some of the answer not properly explained.
Like what are the roles?
Rather than explaining about roles
It’s characteristics were explained.
Some typo mistake
29) what is SQL
Correct ans is structured query language
But here it’s explained as simple queue service …Which is wrong.
Hi, thanks for writing and drawing attention. The content is reviewed and updated.
Why we are unable to add a DynamoDB trigger with read access to the lambda function ?
Computer Optimized is typo error in types of instances, pls correct it to Compute Optimized