Top 90 AWS Career Interview Questions and Answers

Interested in a career in the cloud industry? The best way to start is by taking a plunge with cloud computing platforms like AWS thus building AWS career is important.

Today’s contemporary world is encountering a significant change in how businesses and organizations work. Digitization and injection of cloud and cloud computing have led to various companies using cloud computing at their discretion, for many of their operations, which subsequently had led to a colossal cascade in the need for cloud professionals and increasing demand for AWS career

Certification and training in the cloud platform will undeniably boost your AWS career potentials in leaps and bounds.

To commence your AWS career, you need to prepare and ace AWS interviews. In the spirit of doing so, here are the top 90 AWS interview questions and answers that will aid you with the interview process, so that you will pass with flying colors.

Please make use of this cleverly researched and handpicked Top 90 AWS Interview Questions & Answers to crack your interview with ease.

Basic AWS Interview Questions

1 . What is AWS

AWS stands for Amazon Web Service, this is a gathering of remote computing settings also identified as cloud computing policies. This unique realm of cloud computing is also recognized as IaaS or Infrastructure as a Service. AWS career is most sought after these days.

2 . What are the key components of AWS?

The fundamental elements of AWS are

Route 53: A DNS web service

• Easy E-mail Service: It permits addressing e-mail utilizing RESTFUL API requests or through normal SMTP
• Identity and Access Management: It gives heightened protection and identity control for your AWS account
• Simple Storage Device or (S3): It is a warehouse equipment and the well – known widely utilized AWS service
• Elastic Compute Cloud (EC2): It affords on-demand computing sources for hosting purposes. It is extremely valuable in trouble of variable workloads
• Elastic Block Store (EBS): It presents persistent storage masses that connect to EC2 to enable you to endure data beyond the lifespan of a particular EC2
• CloudWatch: To observe AWS sources, it permits managers to inspect and obtain keys additionally, one can produce a notification alert in the state of crisis.

3 . What is the importance of Buffer in AWS

An Elastic Local Balancer ensures that the incoming traffic is distributed optimally across various AWS instances. A buffer will synchronize different components and make the arrangement additional elastic to a burst of load or traffic. The components are prone to work in an unstable way of receiving and processing the requests. The buffer creates the equilibrium linking various apparatus and crafts their effort at an identical rate to supply rapid services.

4. What is S3

S3 holds for Simple Storage Service. You can utilize the S3 interface to save and recover the unspecified volume of data, at any time and from everywhere on the web. For S3, the payment type is “pay as you go”.

5. How can you send the request to Amazon S3?

Amazon S3 is a REST service, you can transmit the appeal by applying the REST API or the AWS SDK wrapper archives that envelop the underlying Amazon S3 REST API.

6. What does an AMI include?

An AMI Comprises the following elements

• A template to the source quantity concerning the instance
• Launch authorities determine which AWS accounts can avail the AMI to drive instances
• A base design mapping that defines the amounts to join to the instance while it is originated.

7. How many buckets can you create in AWS by default?

In each of your AWS accounts, by default, you can produce up to 100 buckets.

8. What is The Way to Secure Data for carrying in the Cloud?

One thing must be ensured that no one should seize the information in the cloud while data is moving from point one to another and also there should not be any leakage with the security key from several storerooms in the cloud. Segregation of information from additional companies’ information and then encrypting it using approved methods is one of the options.

9. Name the several layers of Cloud Computing?

Here is the list of layers of cloud computing :

• PaaS- Platform as a Service
• IaaS- Infrastructure as a Service
• Saas- Software as a service

10. Explain Can You Vertically Scale An Amazon Instance? How?

• Surely, you can vertically estimate on Amazon instance.
• Twist-up a fresh massive instance than the one you are currently governing
• Delay that instance and separate the source webs mass of severing and dispatch
• Next, quit your existing instance and separate its source quantity
• Note the different machine ID and connect that source mass to your fresh server

AWS Career Questions For Amazon EC2

1. What Are The Components Involved in AWS?

There are 4 components involved and are as below :

Amazon S3: With this, one can retrieve the key information which is occupied in creating cloud structural design, and the amount of product information also can be stored in this component that is a consequence of the key specified.

Amazon EC2 Instance: Helpful to run a large distributed system on the Hadoop cluster. Automatic parallelization and job scheduling can be achieved by this component.

Amazon SQS: This component acts as a mediator between different controllers. Also worn for cushioning requirements those are obtained by the manager of Amazon.

Amazon SimpleDB: Helps in storing the transitional position log and the errands executed by the consumers.

2. What Is Lambda@Edge in AWS?

• In AWS, we can use Lambda@Edge utility to solve the problem of low network latency for end-users.
• In Lambda@Edge there is no need to provision or manage servers. We can just upload our node.js code to AWS lambda and create functions that will be triggered on CloudFront requests.
• When a content request is received by CloudFront edge location, the Lambda code is ready to execute.
• This is a very good option for scaling up the operations in CloudFront without managing servers.

3. Distinguish Between Scalability And Flexibility?

The aptitude of any scheme to enhance the tasks on hand on its present hardware resources to grip inconsistency in command is known as scalability.

The capability of a scheme to augment the tasks on hand on its present and supplementary hardware property is recognized as flexibility, hence enabling the industry to convene command devoid of putting in the infrastructure at all. AWS has several configuration management solutions for AWS scalability, flexibility, availability, and management.

4. Name The Various Layers Of the Cloud Architecture?

There are 5 layers and are listed below

• CC – Cluster Controller
• SC – Storage Controller
• CLC – Cloud Controller
• Walrus
• NC – Node Controller

16. Explain Can You vertically scale An Amazon Instance? How?

• Surely, you can vertically estimate on Amazon instance.
• Twist-up a fresh massive instance than the one you are currently governing
• Delay that instance and separate the source webs mass of severing and dispatch
• Next, quit your existing instance and separate its source quantity
• Note the different machine ID and connect that source mass to your fresh server
• Also, begin it repeatedly Study AWS Training Online From Real-Time Experts.

5. Explain what is T2 instances?

T2 instances are outlined to present average baseline execution and the ability to explode to powerful execution as needed by the workload.

6. In VPC with Private and Public Subnets, Database Servers Should Ideally Be launched Into Which Subnet?

Among private and public subnets in VPC, database servers should ideally originate toward separate subnets.

7. Explain how the Buffer is used in AWS?

The buffer is utilized to deliver the system further robust to handle traffic or load by synchronizing different components. Usually, elements sustain and process the demands in unreliable mode, with the aid of buffer, the elements will be (sap training) equivalent and will operate at a similar speed to accommodate high-speed services.

8. While connecting to your instance what are the possible connection issues one might face?

• The feasible connection failures one might battle while correlating instances are
• Consolidation timed out
• User key not acknowledged by the server
• Host key not detected, license denied
• Unguarded private key file
• The server rejected our key or no sustained authentication program was available

9. Explain Elastic Block Storage? What type of performance can you expect? How do you back it up? How do you improve performance?

That indicates it is a RAID warehouse, to begin with, so it’s irrelevant and fault-tolerant. If disks expire in the RAID you don’t miss data. Excellent! It is more virtualized, therefore you can provision and designate a warehouse, and connect it to your server with multiple API appeals. No calling the storage specialist and asking him or her to operate specific requests from the hardware vendor.

10. What are the different types of events triggered by the Amazon Cloud Front?

Different types of events triggered by the Amazon Cloud front are as follows:

Viewer Request: When an end-user or a client program makes an HTTP/HTTPS request to Cloud Front, this event is triggered at the edge location closer to the end-user.

Viewer Response: When the Cloud Front server is ready to respond to a request, this event is triggered

Origin  Request: When the Cloud Front server does not have the requested object in its cache, the request is forwarded to the origin server. At this time this event is triggered.

General AWS Career Interview Questions

1. Which automation gears can help with Spinup Services?

The API tools can be used for spinup services and also for written scripts. Those scripts could be coded in Perl, bash, or other languages of your preference.

2. What is an AMI? How do I build one?

AMI holds for Amazon Machine Image. It is efficiently a snap of the source file system. Products appliances servers have a bio that shows the master drive report of the initial slice on a disc.

Create a unique AMI at the beginning rotating up and instance from a granted AMI. For Instance, your way credentials should be joined to an instance later spinup. Among a database, mount an external volume that carries your MySQL data next spinup enough.

3. What are the main features of Amazon Cloud Front?

Some of the main features are:

• Device Detection
• Protocol Detection
• Geo-targeting
• Cache Behavior Cross
• Custom SSL

4. What is Amazon EC2 Service?

Amazon Elastic Computer Cloud (EC2) is a web service that provides resizable computing capacity in the cloud.

5. What are The Features of The Amazon EC2 Service?

As the Amazon EC2 service is a cloud service so it has all the cloud features which are:

• Virtual computing environment
• Re-configured templates (AMIs)
• Amazon Ec2 provides various configurations of CPU, memory, storage, and networking capacity for your instances.
• Secure login information for your instances using key pairs
• A firewall that enables you to specify the protocols
• Virtual networks that are logically isolated from the rest of the AWS cloud.

6. What is Amazon Machine Image and what is the relation between an instance and AMI?

AWS provides several ways to access Amazon EC2, like a web-based interface, AWS command-line interface (CLI), and Amazon tools for windows Powershell. First, you need to sign up for an AWS account and you can access Amazon EC2.

Amazon EC2 provides a query API. These requests are HTTP or HTTPS requests that use the HTTP verbs.

7. What is Amazon Machine Image (AMI)?

AMI is a template that contains a software configuration, an operating system, an application server, and applications.

8. What is the relation between an instance and AMI?

We can launch different types of instances from a single AMI. An instance type essentially determines the hardware of the host computer used for your instance.

After we launch an instance, it looks like a traditional host, and we can interact with it as we would do with any computer.

9. Explain storage for Amazon EC2 instance?

Amazon EC2 provides many data storage options for your instances. Each option has a unique combination of performance and durability.

There are 4 types of storage namely :

• Amazon EBS
• Amazon EC2
• Amazon S3
• Adding Storage

10. what are the security best practices for Amazon EC2?

• Use AWS Identity and Access Management(AM) to control access to your AWS resources.
• Restrict access by only allowing trusted hosts to access ports on your instance.
• Review the rules in your security groups regularly, and ensure that you apply the principle of least
• Disable password-based logins for instances launched from your AMI.

AWS Career Interview Questions  For EC2

1. Explain stopping, starting, and terminating an Amazon EC2 instance?

When an instance is stopped, the instance performs a normal shutdown. You can start the instance again at a later time.

When an instance is terminated, the instance performs a normal shutdown, then the attached Amazon EBS volumes are deleted unless the volume’s deletion Termination attribute is set to false.

2. What is S3?

S3 implies for Simple Storage Service.

3. What is S3 used for?

S3 is similar to a warehouse, where you can transfer records to and from beyond, merely not uprise it similar to a filesystem.

4. Should encryption be used?

Encryption is used  with vis-à-vis protection viewpoint

5. What is an AMI?

AMI holds for Amazon Machine Image. It is efficiently a snap of the source filesystem. Products appliance servers have a bio that shows the master drive report of the initial slice on a disk.

6. Can I vertically scale an Amazon Instance? How

Yes. This is an incredible feature of AWS and cloud virtualization. Spin up a new larger instance than the one you are currently running. Pause that instance and discard. Then stop your live instance, detach its root volume. Note down the unique device ID and attach the root volume to your new server. Then start again.

7. Define Auto Scaling?

Auto-scaling is one of the conspicuous characteristic features of AWS anywhere it authorizes you to systematize and robotically oblige and twist up new models externally that are necessary for your entanglement.

8. Which automation gears can help with spinup services?

For written scripts, we can use spin-up services with the help of API tools. It can be coded in bash, Perl, pr any other language of your choice.

9. Is it possible to scale an Amazon Instance vertically? How?

Yes, it is possible to scale Amazon instances vertically because of an unbelievable characteristic of cloud virtualization and AWS.

10. How do the processes start, stop, and terminate works? When an instance is stopped, the instance performs a normal shutdown. You can start the instance again at a later time.

When an instance is terminated, the instance performs a normal shutdown, then the attached Amazon EBS volumes are deleted unless the volume’s deletion Termination attribute is set to false.

AWS Career Interview Questions For Security

1. Explain in detail the function of Amazon Machine Image (AMI)

An AMI is a pattern that comprises a software conformation. From an AMI, we present an example, which is a duplicate of the AMI successively as a virtual server in the cloud.

2. If I’m expanding Amazon Cloud Front, can I custom Direct Connect to handover objects from my own data center?

Certainly. Amazon Cloud Front stipulation culture rises computing sources of separate AWS. By AWS Direct Connect, you will be accelerating with the appropriate information substitution rates.  

3. Explain Storage For Amazon EC2 Instance?

Amazon EC2 provides many data storage options for your instances. Each option has a unique combination of performance and durability. This storage can be used independently or in combination to suit your requirements.

There are  4 types of storage provided by AWS :

• Amazon EBS
• Amazon EC2
• Amazon S3
• Adding Storage

4. What are the Security Best Practices For Amazon EC2?

• Use AWS Identity and Access Management (AM) to control access to your AWS resources.
• Restrict access by only allowing trusted hosts to access ports on your instance.
• Review the rules in your security groups.
• Disable password-based logins for instant launch from your AMI.

5. Explain in detail the function of AMI?

An Amazon Machine Image (AMI) is a pattern that comprises a software conformation. From an AMI, we present an example, which is a duplicate of the AMI successfully as a virtual server in the cloud.

6. How does AWS IAM help your business?

• AWS provides secure resource access to multiple users
• AWS allows you to provide secure access to resources in your account to your employees and applications without creating IAM roles.

7. What are the different types of load balancers in AWS?

• Application Load Balancer
• Network Load Balancer
• Classic Load Balancer

8. What are the different uses of the various load balancers in AWS Elastic load Balancing?

• Application Load Balancer- Used for flexible application management and TLS termination.
• Network Load Balancer- Used for extreme performance and static IPs for your application
• Classic Load Balancer- Used to build an application within EC2 classic network

9. What are the different AWS IAM categories that you can control?

• Create and manage IAM users
• Create and manage IAM groups
• Manage the security credentials of the users.
• Create and manage policies to give access to AWS services and resources.

10. What is the difference between Latency Based Routing and Geo DNS?

The Geo Based DNS routing takes decisions based on the geographic location of the request. Whereas, Latency Based Routing utilizes latency measurements between networks and AWS data centers.

AWS Interview  Questions for Route 53

1. What is the difference between a Domain and a Hosted Zone?

Domain

A collection of data describing a self-contained administrative and technical unit.

Hosted zone

A container that holds information about how you want to route traffic on the internet for a specific domain.

2. How does AWS config work with AWS Cloud Trail?

AWS CloudTrail records user API activity on your account and allows you to access information about the activity. You will know the identity of the caller, time of the call, request parameters, and response elements.

3. Can AWS Config aggregate data across different AWS accounts?

Yes, you can set up AWS Config to deliver configuration updates from different accounts to one S3 bucket, once the appropriate IAM policies are applied to the S3 bucket.

4. Which type of scaling would you recommend for RDS and why?

Two types of scaling are:

• Vertical scaling
• Horizontal scaling

For RDS Vertical scaling is recommended to resize.

5. What is a maintenance window in Amazon RDS?

RDS maintenance window lets you decide when DB instance modification, database engine version upgrades, and software patching have to occur. 30-minute value by default is assigned as a maintenance window.

6. What type of query functionality does DynamoDB support?

DynamoDB supports GET/PUT operations by using a user-defined primary key. It provides flexible querying on non-primary vital attributes using global secondary indexes and local secondary indexes.

7. What is AWS WAF?

AWS WAF is a web application firewall that lets you monitor the HTTP and HTTPS applications that are promoted to Amazon CloudFront and give you the regulated path to your content.

8. What are the benefits of using WAF?

• Security for web initiatives relating to circumstances that you designate.
• Rules that you can reuse for various network appeals.
• Real-time metrics and examined web demands.
• Computerized command practicing the AWS WAF API.

9. What is AMAZON EMR?

Amazon Elastic Map (EMR) is a survived cluster stage that interprets working big data structures, before-mentioned as Apache Spark and Apache Hadoop, on AWS to treat and investigate enormous volumes of data.

10. What is AWS Data Pipeline?

A web service that you can implement to automate the journey and barter data is called AWS Data Pipeline.

11. What are the components of AWS Data Pipeline?

• A pipeline key
• A pipeline register
• Task runner

12. What is Amazon Kinesis Firehose?

A fully managed service for delivering real-time streaming data to a destination such as Amazon Simple Storage Service (S3) and Amazon Redshift.

13. What is Amazon CloudSearch?

A thoroughly managed service in the cloud that creates it simple to set up, maintain, and estimate a search solution for your websites or application is called Amazon CloudSearch.

14. What is Amazon CloudSearch Features?

Entire text search with language-specific text processing

• Range searches
• Prefix searches
• Boolean search
• Faceting Term boosting
• Highlighting
• Autocomplete Advices

15. Explain what is regions and Endpoints in AWS?

An endpoint is a URL that is the entry point for a web service. To decrease data latency in your forms, most AWS results enable you to choose a sectional endpoint to make your application.

16. What are the different types of cloud services?

• PaaS- Infrastructure as a Service
• Saas- Software as a Service (SaaS)
• PaaS-Platform as service
• DaaS- Data as a service.

17. What is Simple DB?

A structured record or data repository that encourages indexing and data doubts to both EC2 and S3 is known as Simple DB.

AWS Short Answer Questions

1. What is the type of architecture, where half of the workload is on the public load while at the same half of it is on the local storage?

Hybrid cloud architecture.

2. Suppose you are a game designer and want to develop a game with single-digit millisecond latency, which of the following database services would you use?

Amazon DynamoDB

3. If you need to perform real-time monitoring of AWS services and get actionable insights, which services would you use?

Amazon CloudWatch

4. As a web developer, you are developing an app, targeted for the mobile platform. Which of the following let’s do you add user sign-up, sign-in, and access control to your web and mobile apps quickly and easily?

Amazon Cognito

5. Which service do you use if you want to allocate various private and public IP addresses to make them communicate with the internet and other instances?

Amazon VPC

6. This service lets you run code without provisioning or managing servers. Select the correct service from the below options

AWS Lambda

7. As your company’s AWS Solutions Architect, you are in charge of designing thousands of similar individual jobs. Which services best meet your requirements?

AWS Batch

AWS MCQ’s

1. If you need to perform real-time monitoring of AWS services and get actionable insights, which services would you use?
2. Amazon Firewall Manager
3. Amazon EBS
4. Amazon GaurdDuty
5. Amazon CloudWatch
6. Which service do you use if you want to allocate various private and public IP addresses to make them communicate with the internet and other instances?
7. Amazon VPC
8. Amazon Route 53
9. Amazon API Gateway
10. Amazon CloudFront
11. Which of the following is a means for accessing human researchers or consultants to help solve problems on a contractual or temporary basis?
12. Amazon Elastic Mapreduce
13. Amazon Mechanical Turk
14. Amazon DevPay
15. Multi-Factor Authentication
16. As an AWS Developer, using this pay-per-use service, you can send, store and receive messages between software components. Which of the following is it?
17. AWS Step Functions
18. Amazon MQ
19. Amazon Simple Queue Service
20. Amazon Simple Notification Service
21. A part of your marketing work requires you to push messages onto Google, Facebook, Windows, and Apple through APIs or AWS Management Console. Which of the following services do you use?
22. AWS Simple Notification Service
23. AWS CloudTrail
24. AWS Config
25. Amazon Chime

The above Top 90 AWS Questions and Answers are a few examples of how you can season yourself in the AWS platform and make AWS career a lucrative career.

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