Top 16 AWS Interview Questions in 2021
Amazon is the leading tech giant and has been the leading cloud brand over the past couple of years. Also, AWS is expected to grow in the future with more pace. With more demand for AWS cloud, the need for AWS cloud professionals is also increasing. Most learners are already preparing themselves to become AWS cloud professionals. And, for the aspirants preparing for AWS Interview, this blog covers the Top 50 AWS Interview Questions you must prepare in 2021 .
AWS Interview Questions – Beginner Let’s start AWS Interview Questions with some beginner-level questions that cover foundational knowledge and basics.
AWS Interview Questions
1) What is AWS?
Amazon Web Services (AWS) is the most popular cloud service platform by Amazon. It offers more than 200 fully-featured services, including storage, analytics, developer tools, IoT, and security.
2) Name the key components of AWS
The key components of AWS are:
Simple Storage Device or (S3): Widely used AWS service and a storage device. Route 53: DNS Web Service. Simple E-mail Service: Used for sending an e-mail via regular SMTP or by using the RESTFUL API call. Identity and Access Management: Provide identity management and enhanced security for a user’s AWS account. Cloud Watch: View and collect the key to monitoring AWS resources. Elastic Compute Cloud (EC2): On-demand computing resources for hosting applications and is convenient for unpredictable workloads. Elastic Block Store (EBS): Storage volumes that connect to EC2. 3) What is EC2?
AWS Interview Questions EC2
Amazon EC2 or Amazon Elastic Compute Cloud is a cloud service that enables secure and resizable compute capacity. It makes web-scale cloud computing simpler for developers.
AWS Interview Questions – Intermediate Now come AWS Intermediate Questions of intermediate level that will cover some in-depth concepts.
AWS Interview Questions
4) How does Amazon Route 53 provide High Availability and Low Latency?
Amazon Route 53 uses three important things to provide high availability and low latency.
Globally Distributed Server Dependency Optimal Locations 5) What are Spot Instances and On-Demand Instances?
Spot Instances are unused computing capacity blocks released by AWS when EC2 instances are created. On-Demand Instances are virtual servers in the AWS EC2 used while testing and developing applications on EC2. 6) What is Connection Draining?
Connection Draining
Connection Draining enables the servers to serve their current requests before they are updated or removed. Connection draining helps re-route the traffic from the Instances and is in a queue to be updated.
AWS Interview Questions – Advanced Finally, the AWS Interview Questions of advanced level covering deep knowledge in the AWS concepts.
AWS Interview Questions
7) What are some Security Best Practices for Amazon EC2?
AWS EC2
Security best practices for Amazon EC2 are:
Only allowing the trusted hosts or networks to access ports on an instance. Using Identity and Access Management (Identity and Access Management) to control access to AWS resources. Only enabling those permissions you require and disabling password-based logins for instances launched from your AMI. 8) Differentiate between Stopping and Terminating an EC2 Instance?
Terminating and Stopping Instance
When an Ec2 instance is stopped, a normal shutdown is performed on the instance, whereas when an EC2 instance is terminated, it gets transferred to a stopped state, and then the attached EBS volumes are permanently deleted.
9) How to configure CloudWatch to recover an EC2 Instance?
Configuring CloudWatch to recover an EC2 instance:
Using Amazon CloudWatch – create an alarm Then Define Alarm – Actions tab Choose the “recover this instance” option. 10) Name the common types of AMI Designs?
Some common types of AMI designs are:
Fully Baked AMI Just Enough Baked AMI (JeOS AMI) Hybrid AMI 11) How to auto-delete old Snapshots?
Auto-deleting old snapshots:
Taking snapshots of EBS volumes on Amazon S3 Using AWS Ops Automator to handle snapshots automatically. This creates, copies, and deletes Amazon EBS snapshots. 12) How can a user gain access to a Specific Bucket?
Access Bucket
Categorizing instances Defining how authorized users can manage specific servers Locking down tags Attaching policies to IAM users. 13) What are the factors to consider while Migrating to AWS?
Considered factors while migrating to AWS are:
Operational Costs Workforce Productivity Cost avoidance Operational resilience Business agility 14) What are some Security Products and features available in VPC?
Security products and features available in VPC:
Security groups Network access control lists Flow logs 15) When should a Classic Load Balancer and an Application load balancer get used?
A Classic Load Balancer is ideal for simple load balancing of traffic across multiple EC2 instances. In contrast, an Application Load Balancer is ideal for microservices or container-based architectures where there is a need to route traffic to multiple services or load balance across multiple ports on the same EC2 instance.
16) What happens if my application stops responding to requests in beanstalk?
AWS Beanstalk applications have a built-in system for avoiding failures in the underlying infrastructure. If an Amazon EC2 instance fails somehow, Beanstalk will automatically use Auto Scaling to launch a new instance. If your application is not responding to the custom link, Beanstalk can also detect it.