AWS Interview Questions and Answers

AWS Interview Questions: Advanced Technical Topics for Beginners. Learn and Prepare with these New AWS Interview Questions and Answers. In this AWS Tutorial today, we will learn what to prepare for the exam.

1. What is AWS?

Answer: AWS, the thing is, nothing but the service of Amazon, and it stands for Amazon Web Services. Amazon Web Services is a platform that we can use on a subscription basis for using different resources like storage, networking, database , and for hosting our website over the internet. It's pay as you use model; AWS is not available for free.

2. What is Amazon Web Services made up of?

Answer: Vpc-virtual Private Cloud, EC2-Elastic Compute Cloud, Storage S3-Simple Storage Service, Route53, EBS-Elastic Block Storage,key-pair, Cloudwatch are a few components of AWS.

3. What is KeyPais concept?

Response: Why on earth do we need key pairs for, let's face it, nothing more than virtual machines? And in the case of Keypair,s we have 2 keys private key and a public key to access instances/virtual machines.

4. what is s3?

Solution: Explanation: S3 is Simple Storage Service. Service: S3 (with the help of this, we can store data at any time of this world ) On S3, we have to pay as we use.

5. List the pricing model of EC2 Instance?

Answer :

1. On-Demand

2. Reserved

3. Spot

4. Scheduled

5. Dedicated

6. What are EC2 Instance volumes on Amazon?

Solution: There are two kinds of these volumes.

1. EBS-Elastic Block Storage

2. Instance Store Volume

7. What is EBS(Elastic Block Storage)?

Answer: Elastic Block Storage (EBS) expands to Elastic Block Storage. We can mount the volumes on the instances. Our data in the EBS Volume will available after stopping (terminating) the instance. If not, down in the Instance volume, where our data goes when we kill the instance.

8. Enlist the types of Instances?

Answer: The following are types

1. General Purpose

2. Compute Optimized

3. Storage Optimized

4. Memory-Optimized

5. Accelerated Computing

9. What is Auto-Scaling? Enlist the components?

Answer: Auto Scaling increases and decreases the number of instances automatically based on CPU utilization or memory usage.

Auto-scaling consists of 2 components

1. Auto-Scaling Group

2 . Launch configuration

10. What is AMI?

Solution: AMI. The full form of 'AMI' is Amazon Machine Image. AMI is a blueprint that includes software configuration, launch permissions, block device mappings (with the location of the root volume where the OS), and so on.

11. What is an elastic IP address?

Answer: EIP, i.e., Elastic Ip address. It's meant for dynamic cloud computing. Whenever our machines need Static Ip address. means when even we stop and start your machine, we are going to us EIP.

12. What is CloudWatch?

Answer: CloudWatch is a monitoring tool for AWS cloud resources. For eg, Network, Application, Health Check, etc.

13. How big and small objects can we store in S3?

Answer: The minimum size and maximum size of an object is the minimum object that can be stored in S3, which is 0 bytes to store an individual, and for each, it is 5TB.

14. What are the types of storage options available in S3 Storage?

Answer: The following are types of S3 Storage classes.

Standard frequently accessed

Standard infrequently accessed

One zone is infrequently accessed.

Glacier

Reduced Redundancy Storage(RRS)

15. What is Glacier?

Answer: Glacier is a backup or an archival tool where we can do the backup of data.

16. How would you privatize our S3 bucket?

Answer: Which 2 ways can we use to secure the S3 Bucket and retrieve data?

1. ACL (Access Control List)

2. Bucket Policies

17. What is the method to encrypt data in S3?

Reply: What is it that we are encrypting?

Server-Side Encryption –s3(AES-256)

Server-Side Encryption – KMS (Key management service) E. None of the above Show Answer Answer: D Reference: KB The S3 objects need to be encrypted using?

Server-Side Encryption –C(Client-Side)

18. What are the pricing parameters for S3 storage?

Answer: The price model for S3 is like the following.

Storage used

2. Number of requests

3. Storage Management

4. Data Transfer

5. Transfer Acceleration

19. What do I need to set up in order to use cross-region replication on S3?

Answer: We need to turn on Versioning for both locations. at emulation and destination sites. Another important thing that we need to make sure of while replicating isthat  our region should be different.

20. What are the roles?

Answer: We use Roles to give permissions to those users that you trust in our AWS account. Roles are members in another account. Roles are quite like users, but with roles implies you don’t have to create a username and password for those who is going to use your resources.

21. What are policies, and what are the types of Policies?

Answer: Polices are permissions that we can attach to the user, which we have created. Policies will

Keep all that access we've given to the users that we've created. There are 2 policies:

Managed Policies

Inline Policies

22. What is CloudFront?

Answer: Description: Amazon CloudFront is a web service for content delivery. It integrates with other Amazon Web Services to give developers and businesses an easy way to distribute content—media files, documents, and scripts—with low latency and high data transfer speeds. CloudFront is a product from AWS called a content delivery network.

23. What are the edge Locations?

Solution: Edge location is a location where content can be cached. When a user request arrives, the content is searched in the edge location. If it does not exist there, the content originating from the first location and a copy will be cached at the edge location.

24. What is the RDS database type?

Answer: Types of RDs are as follows

1. Aurora

2. Oracle

3 . MYSQL Server

4  .Postgresql

5.MariaDB

6.SQL Server

25. What is redshift?

A: AWS Redshift is a data warehousing tool. It’s a powerful & fast, fully managed petabyte-scale data warehouse service in the cloud.

26. what is SNS(Simple Notification Service)?

Answer: SNS stands for simple notification service. Simple notification service(it is a web service that facilitates sending notifications from the cloud. you can configure SNS to a email notification or a message notification.

27. What are routing policies in Route53?

Answer: The following are the routing policies for route53.

1. Simple routing

2. latency routing

3. Failover routing

4.geolocation routing

5. weighted routing

6. multivalue answer

28. What's the SQS Message Size Limit?

Answer: The maximum allowed message size in SQS is 256KB.

29. What are the varieties of Queues in SQS?

Answer: There are two kinds of queues in SQS.

1. Standard Queue

2 .First i,n First out(FIFO)

30. What are the kinds of load balancers in EC2?

Answer: Three types of Load Balancers are available.

1. Application Load Balancer

2  . Network Load Balancer

3 . Classic Load Balancer

31. what is ELB(Elastic Load Balancer)?

ELB stands for elastic load balancing. Accordingly, ELB automatically spans the load balancer across IPs (whale kind of IP addresses - Ec2 and container).

32. What are 2 type of access you can give when creating users?

Answer: We have 2 accesses to create Users.

1. Programmatic access

2.Console access

33. What benefit does autoscaling provide?

Answer: The benefits of Autoscaling are as follows

We can improve the fault tolerance by getting to this point.

we can get better availability

better management of costs can be achieved

34. What isthe  AMI concept?

Answer: cAMI is Amazon Machine Image what have modified the machine. we have some public AMI’s for custom use.

35. What is different between Application Load Balancer and Classic Load Balancer??

Answer: In Application Load balancer we can assign the ports dynamically, multiple port multiples listeners are there.. In ordinary load balancers , we have one port listener.

36. How many IP addresses are reserved in one subnet at AWS?

Answer: In  Amazon Web Services that are reserved, we have got 5 different IP addresses.

NID(Network ID)

BID(Broadcast ID)

DNS

Default Gateway

Amazon saves 1 IP address for its own use

37. What is subnets concept in Amazon Web Services?

Answer: A subnet is a logical part of a network in a smaller size subnet.

38. How to make the Private subnet a public subnet: We can not change a private subnet into a public.

Answer: We have to delete igw (IGW = Internet Gateway) and add nat gateway. We have to manual in private routing table for the subnet.

39. Can we shrink EBS(Elastic Block Storage)?

Answer: Elastic Block Storage cannot be scaled down. We can make this  bigger if we prefer.

40. What is an Elastic Ip address? Is it charged?

Answer: Elastic IP is used to connectan instance to the internet. If these IPs are not attached to the instances, we have to bill for them (the elastic ip addresses)

41. What is the purpose of tag and how can we use these tags?

Tags which we can use to identify and in for grouping in multiple resources in AWS.

42. Balancer & DNS service are grouped under which type of technology?

Ans: Load balancer and DNS server are both IAAS.

IAAS is an abbreviation for infrastructure as a service.

43. What are the types of amis?

Soulution: we have various AMI provided by AWS.

Instance store-backed

2. EBS Backed

44 .why we need to choose AWS?

Answer : We can use AWS to be precise.

Lower computing Cost is here

Improved Performance in AWS.

No need for IT maintenance

We can get Business connectivity

We can Upgrade environment very easily

Device-independent in AWS.

45. What are the deployment blocks of various Cloud services?

Answer: Here are the cloud modules

Private cloud

Public Cloud

Hybrid Cloud

Community Cloud 4

46. What are the pros of Amazon Web Services?

Answer: Adventures of using Amazon web services: It is a popular question and I always dad to answer that.

Pay as peruse

Elasticity

High Availability

Scalability Is high

Increase Agility and speed

Go global in any minutes

47. How to access AWS?

Answer:

AWS Console

AWS CLI

AWS SDK(Software Development Kit)

48. How does EC2 pricing work? 

Answer:1. General Purpose

2.Compute Optimized

3. Memory-Optimized

4. Storage Optimized

5. GPI-Based

49. What are the types of authentication available in AWS?

Answer :

1. Username/Password

2.A ccess Key

3 .Session Token

50. How does AWS achieve fault tolerance with a multi-region architectural setup?

Answer:

In a multi-region setup, AWS delivers fault tolerance in the form of spreading applications as well as data across geographically-dispersed regions. Amazon Route 53 and other similar services route traffic to healthy regions based on health checks, along with failover routing policies. With services like Amazon S3 Cross-Region Replication, Amazon RDS Read Replicas,  and DynamoDB Global Tables, there are even more ways to replicate our data. When one region is down, the traffic can be shifted to another available region, and there are no drawbacks for high availability, business continuity or any service disruption.