Interview Questions and Answers" width="700" height="250" />Facing an AWS interview can be daunting, but I am here to help. This comprehensive guide on AWS Interview Questions and Answers is designed to prepare you for success. From understanding core concepts to tackling advanced scenarios, I have compiled essential questions and insightful answers to enhance your knowledge and confidence. Whether you are a beginner or an experienced professional, this resource offers valuable insights that I found incredibly beneficial in my own journey.
Let’s dive in and make your AWS interview preparation both effective and engaging.
Here are AWS basic interview questions and answers for fresher as well as experienced candidates to get their dream job.
AWS stands for Amazon Web Service; it is a collection of remote computing services also known as a cloud computing platform. This new realm of cloud computing is also known as IaaS or Infrastructure as a Service.
The key components of AWS are
S3 stands for Simple Storage Service. You can use the S3 interface to store and retrieve any amount of data, at any time and from anywhere on the web. For S3, the payment model is “pay as you go.”
AMI stands for Amazon Machine Image. It’s a template that provides the information (an operating system, an application server, and applications) required to launch an instance, which is a copy of the AMI running as a virtual server in the cloud. You can launch instances from as many different AMIs as you need.
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.
Interview Questions and Answers" width="700" height="250" />
An AMI includes the following things
Amazon S3 is a REST service, and you can send a request by using the REST API or the AWS SDK wrapper libraries that wrap the underlying Amazon S3 REST API.
The difference between EC2 and Amazon S3 is that
| EC2 | S3 |
| It is a cloud web service used for hosting your application | It is a data storage system where any amount of data can be stored |
| It is like a huge computer machine which can run either Linux or Windows and can handle applications like PHP, Python, Apache, or any databases | It has a REST interface and uses secure HMAC-SHA1 authentication keys |
By default, you can create up to 100 buckets in each of your AWS accounts.
Yes, you can vertically scale on the Amazon instance. For that
T2 instances are designed to provide moderate baseline performance and the capability to burst to higher performance as required by the workload.
With private and public subnets in VPC, database servers should ideally launch into private subnets.
For secure Amazon EC2 best practices, follow the following steps
The buffer is used to make the system more robust to manage traffic or load by synchronizing different components. Usually, components receive and process the requests in an unbalanced way. With the help of a buffer, the components will be balanced and will work at the same speed to provide faster services.
The possible connection errors one might encounter while connecting instances are
Key-pairs are secure login information for your virtual machines. To connect to the instances, you can use key-pairs which contain a public-key and private-key.
Following are the types of instances:
No, currently Amazon VPI does not provide support for broadcast or multicast.
5 VPC Elastic IP addresses are allowed for each AWS account.
The default storage class is a Standard frequently accessed.
Roles are used to provide permissions to entities which you can trust within your AWS account. Roles are very similar to users. However, with roles, you do not require to create any username and password to work with the resources.
Edge location is the area where the contents will be cached. So, when a user is trying to access any content, the content will automatically be searched in the edge location.
VPC stands for Virtual Private Cloud. It allows you to customize your networking configuration. It is a network which is logically isolated from another network in the cloud. It allows you to have your IP address range, internet gateways, subnet, and security groups.
Snowball is a data transport option. It used source appliances to a large amount of data into and out of AWS. With the help of snowball, you can transfer a massive amount of data from one place to another. It helps you to reduce networking costs.
Redshift is a big data warehouse product. It is a fast and powerful, fully managed data warehouse service in the cloud.
Following are the advantages of autoscaling
A large section of IP Addresses divided into chunks is known as subnets.
Yes, we can establish a peering connection to a VPC in a different region. It is called inter-region VPC peering connection.
Simple Queue Service is also known as SQS. It is distributed queuing service which acts as a mediator for two controllers.
You can have 200 subnets per VPC.
DNS and Load Balancer and DNS services come under IAAS-storage cloud service.
CloudTrail is a specially designed tool for logging and tracking API calls. It helps to audit all S3 bucket accesses.
EC2 officially launched in the year 2006.
SimpleDB is a data repository of structure record which encourages data doubts and indexing both S3 and EC2are called SimpleDB.
Amazon Elasticcache is a web service which makes it easy to deploy, scale and store data in the cloud.
Lambda is an Amazon compute service which allows you to run code in the AWS Cloud without managing servers.
The types of AMI provided by AWS are:
AWS Edge locations are services that redundantly cache data and images.
A Geo-restriction feature helps you to prevent users of specific geographic locations from accessing content which you’re distributing through a CloudFront web distribution.
EMR is a survived cluster stage which helps you to interpret the working of data structures before the intimation. Apache Hadoop and Apache Spark on the Amazon Web Services help you to investigate a large amount of data. You can prepare data for the analytics goals and marketing intellect workloads using Apache Hive and using other relevant open-source designs.
The boot time for an Amazon instance store-backend AMI is less than 5 minutes.
Yes, the Internet gateway is needed to use VPC (virtual private cloud peering) connections.
We can’t be able to connect EBS volume to multiple instances. However, you can connect various EBS Volumes to a single instance.
Various types of cloud services are:
AMI is a template consisting of software configuration part. For example Operating systems, applications, application servers if you start an instance, a duplicate of the AMI in a row as an attendant in the cloud.
Two types of Load balancers are:
You should select provisioned IOPS storage over standard RDS storage if you want to perform batch-related workloads.
Important features of the Amazon cloud are:
Yes, you can vertically estimate one Amazon instance.
Lifecycle hooks are used for autoscaling to put an additional wait time to a scale in or scale out event.
Different layers of cloud architecture are:
Storage classes available with Amazon s3 are:
Amazon CloudWatch is an AWS service for monitoring and managing AWS resources and applications. It tracks performance metrics, collects and stores log data, sets alarms for specific thresholds, and provides dashboards for real-time insights. CloudWatch helps ensure your AWS environment is efficient, secure, and performing optimally. Features of CloudWatch:
A Spot Instance is a type of Amazon EC2 instance that you can purchase at a lower price, with the trade-off that it can be terminated by AWS if the capacity is needed elsewhere. An On-Demand Instance is an EC2 instance that you pay for by the hour or second with no long-term commitment, giving you flexibility and control over your usage. A Reserved Instance is an EC2 instance that you commit to using for a 1 or 3-year term, offering significant discounts compared to On-Demand pricing.
Yes, there are several alternative tools to log into a cloud environment besides using the cloud provider’s web console:
Monitoring an Amazon Virtual Private Cloud (VPC) by using:
To create a highly available and fault-tolerant AWS architecture for critical web applications, consider the following strategies:
Preparing for an AWS interview involves understanding various topics, from AWS fundamentals and key components to technical details like AMIs, EC2 instances, and S3 storage. Focus on practical applications and hands-on experience with AWS services to effectively demonstrate your knowledge. I believe familiarity with security practices, scaling strategies, and AWS terminologies is vital. With thorough preparation, you can confidently answer AWS-related questions and enhance your chances of success.
These interview questions will also help in your viva(orals). Refer our AWS Tutorials for an extra edge in your interview. Good luck!
