Amazon Web Services (AWS) has become an important factor in the rapidly changing world of cloud computing, completely altering how businesses build, operate, and grow their IT infrastructure. The demand for knowledgeable AWS individuals has risen to previously unheard-of levels as businesses increasingly use cloud technology to encourage innovation and efficiency. As a result, interviews for AWS-related jobs have grown more demanding and concentrated, calling for a thorough comprehension of AWS services, architecture, and best practices.
This article includes a chosen collection of the top AWS interview questions and answers for the year 2023. These questions have been carefully collected to represent AWS’s most recent developments and advancements, catering to the industry’s changing demands. Whether you are a seasoned AWS specialist or a candidate looking to get into the realm of cloud computing, this compilation will provide you with vital insights and expertise to confidently handle AWS-focused interviews.
1. What is the connection between Availability Zone and Region?
In Amazon Web Services (AWS), Regions represent distinct geographical areas, such as “US-West 1 (North California)” and “Asia South (Mumbai).” Each Region is independent and isolated from other Regions, providing redundancy and low-latency access for users in different locations. Each Availability Zone may contain a single or multiple data center.
Within each AWS Region, there are Availability Zones (AZs). Availability Zones are isolated areas within a Region designed to ensure fault tolerance and high availability. They operate in separate data centers and can replicate themselves as needed. By distributing resources across multiple Availability Zones within the same Region, AWS users can achieve enhanced resilience and continuity in case of disruptions.
2. What stages are involved in implementing a CloudFormation Solution?
In a CloudFormation solution, the implementation involves the following steps:
3. What services are available for implementing a centralized logging solution?
Essential services include:
4. What is AWS S3?
Amazon Simple Storage Service (Amazon S3) is a highly scalable and durable cloud storage service that Amazon Web Services (AWS) provides. It is designed to store and retrieve vast amounts of data, ranging from small individual files to massive datasets, over the internet. S3 offers a simple and cost-effective solution for businesses and developers to store and manage their data in a secure and reliable manner.
5. What is AMI?
AMI stands for Amazon Machine Image. It is a pre-configured virtual machine image used to create and launch instances (virtual servers) in Amazon Elastic Compute Cloud (Amazon EC2). An AMI contains the operating system, application software, configurations, and necessary data to run an instance.
6. What are the native logging capabilities of AWS Security?
7. What are AWS’s standout services?
8. What is the difference between stopping and terminating an instance?
An EC2 instance has three states: starting, stopping, and terminating.
|Starting and Stopping||Terminating|
9. What is the root device volume on Amazon EC2?
On the root device, volume, supported by either Amazon EBS or an instance store, is stored in the root device image used to boot an EC2 instance. The root device volume is created when an Amazon AMI launches a new EC2 instance. The EC2 instance’s lifetime does not impact the root device data stored on Amazon EBS.
10. What are the different types of instances in AWS?
The following are the types of AWS instances.
11. How do you set up CloudWatch so that an EC2 server can be recovered?
To set up CloudWatch to enable automated recovery for an EC2 server, you can use Amazon CloudWatch Alarms and Amazon EC2 Auto Recovery. Here’s a step-by-step guide:
12. How do you configure an AWS system to track website metrics in real-time?
To configure an AWS system to track website metrics in real-time, follow these steps:
13. List some AWS services that are not region-specific.
Some AWS services are not region-specific and are available globally. These services are designed to be accessible from any AWS Region and include:
14. What is the difference between a Reserved Instance, a Spot Instance, and an On-Demand Instance?
|Reserved Instance||Spot Instance||On-Demand Instance|
15. What are Snapshots in Amazon Lightsail?
Snapshots are point-in-time backups of EC2 instances, block storage drives, and databases in AWS. They can be created manually or automatically at any time. Snapshots allow resources to be restored to a previous state even after their creation. Restored resources perform the same tasks as the original ones from which the Snapshots were taken. They serve as essential data recovery and disaster resilience tools in AWS.
16. What is a bastion host?
A bastion host is a security-hardened instance that is used to access other instances in a VPC. Bastion hosts can be used to reduce the attack surface of the VPC (Virtual Private Cloud).
17. What do you mean by Key-Pairs in AWS?
In AWS, a key pair is a cryptographic key used for secure authentication and access to Amazon EC2 instances. It consists of a public key, uploaded to AWS instances, and a private key held by the user. The public key encrypts data, while the private key decrypts it. Key pairs enable secure logins via SSH for Linux instances and decrypt Windows passwords for Windows instances. Keeping the private key safe is crucial to prevent unauthorized access.
18. What is the difference between RTO and RPO in AWS?
Additional AWS Interview Questions to Enhance Your Preparation:
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