AWS EC2 Interview Questions
Amazon Web Services (AWS) stands as the world’s most comprehensive and broadly considered cloud provider, boasting over 200 fully featured services available from data centers across the globe.
Millions of customers, ranging from the fastest-growing startups to the popular enterprises and leading government organizations, AWS helps businesses to reduce the costs, increase agility, and innovation at a rapid speed. Amazon Web Services (AWS) is a powerhouse in the cloud computing industry, offering a wide range of services to drive business success and innovation.
One of its services, Amazon Elastic Compute Cloud (EC2), is extensively utilized for launching and managing virtual servers in the cloud.In this blog, we will explain the most basic “AWS EC2 interview questions” that interviewers often ask candidates, along with answers to help you prepare.
This blog will cover the basic concepts like instance types and security groups, user-data, meta data service etc
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Question 1. What is AWS EC2?
Answer: Amazon Web Service EC2 is a secure, resizable, and scalable web service provided by the AWS cloud. With pre-configured virtual machines and managed infrastructure, you can easily launch and terminate EC2 instances as needed. Scale up or down depending on traffic, which allows you to pay only for what you use. It proves to be an easy and efficient solution for cloud computing needs.
Question 2. What is an EC2 instance?
Answer: An EC2 instance is essentially a virtual server in the AWS cloud that offers a range of computing resources like CPU, memory, storage, and networking. These EC2 instances are created from Amazon Machine Images (AMIs) and can be customized to fit particular needs and specifications.
Question 3. What is an instance type in EC2?
Answer: With each instance type in EC2 defining the exact hardware specifications of the virtual server, from CPU to memory to storage and networking capacity. These instances are optimized for specific use cases and workloads, for ex- general-purpose computing, memory-intensive applications, or compute-optimized tasks, which allows us to ensure that each instance type is fit for maximum efficiency.
Question 4. What is an AMI?
Answer: An AMI is defined as a pre-configured virtual machine image that is essential for creating EC2 instances. AMI contains all the information needed to launch an instance, which includes the operating system and application software.
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Question 5. How do you launch an EC2 Instance?
Answer: Step 1: Sign in to the AWS Management Console using your AWS account credentials
To get started, sign in to the AWS Management Console using your AWS account credentials.
Step 2: Open the EC2 Console Once you are signed in to the AWS Management Console
Step 3: In the EC2 console, click on the “Launch Instance” button to start the instance creation process.
Step 4: Provide a Name for the EC2 Instance
Step 5: Choose an Amazon Machine Image (AMI) that best suits your requirements.
Step 6: Choose an Instance Type which determines the hardware which deals with memory, storage capabilities of the host computer used for your instance.
Step 7: To securely access your EC2 instance from your system, you need to create a key pair by clicking on the “Create new key pair” button.
Step 8: Configure Instance Details, Add Storage, and Configure Security Groups
In this step, you can configure various settings for your EC2 instance. Adjust these settings based on your specific requirements.
Step 9: Review and Launch
Before launching the instance, review the configuration details to ensure everything is set up correctly.
Question 6. How do you connect to an EC2 instance?
Answer: You can easily connect to an EC2 instance using SSH for Linux instances or Remote Desktop Protocol for Windows instances. Just make sure you have the private key for SSH or the password for RDP to establish a secure connection.
Also Read: AWS Lambda Interview Question
Question 7. What is an EIP (Elastic IP address) ?
Answert: An Elastic IP address (EIP) is a static IPv4 address specifically created for dynamic cloud computing. This address is linked to your AWS account and can be easily assigned to EC2 instances as needed.
Question 8. What is an EC2 security group?
Answer: An EC2 security group serves as a virtual firewall which controls inbound and outbound traffic to and from an EC2 instance. It also allows you to define the rules that specify which traffic is allowed or denied based on protocols, ports, and IP addresses.
Also Read: AWS S3 Interview Questions With Answers (2023-2024)
Question 9. What is user data in EC2?
Answer : User data in EC2 is a tool that allows you to provide scripts or configuration data to your EC2 instances during launch. which helps you to customize your instances by running commands or scripts upon startup, making it easy to install software, configure services, and set up applications to your exact specifications.
Question 10. What is an EC2 instance metadata service?
Answer : The EC2 instance metadata service offers temporary, instance-specific data that can easily be accessed from within an EC2 instance. This service enables applications running on the instance to retrieve information about the instance, like instance ID, public and private IP addresses, security group details, and user data etc.
Conclusion
In conclusion, these AWS EC2 Interview Questions are very helpful for both freshers and working professionals who are practicing for interviews or who prepare for the AWS Solution Architect Certification exam.
All these questions are very important to pass the interview.
Remember these things: Hand-on experience will help you get these interview questions even better.
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