May 12, 2022

Top 20 AWS Cloud9 Interview Questions and Answers

                AWS Cloud9 is a browser-based integrated development environment (IDE) that allows you to write, run, and debug code. A code editor, debugger, and terminal are all included. Cloud9 is pre-installed with key tools for major programming languages such as JavaScript, Python, PHP, and more, so you don't have to install files or setup your development workstation to get started. Because your Cloud9 IDE is cloud-based, you may work on your projects from any internet-connected machine, including your office, home, or anyplace else. Cloud9 also offers a smooth development experience for serverless apps, allowing you to simply define resources, debug, and switch between local and remote execution. You can share your development environment with your team fast with Cloud9, allowing you to pair programme and track each other's inputs in real time.

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Ques. 1): How can I begin using AWS Cloud9?


You can choose AWS Cloud9 from the AWS Management Console after logging in. The console will walk you through the options for choosing a Linux server to connect to Cloud9. In a few simple steps, you may either create a new Amazon EC2 instance (AWS Cloud9 EC2 environment) or connect your current Linux server (AWS Cloud9 SSH environment). You may access your IDE and write code in a fully configured development environment once you've created a Cloud9 environment.

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Ques. 2): Who should utilise Amazon Web Services Cloud9?


AWS Cloud9 is available to everyone who writes code. Cloud9 provides instant access to a fully configured development environment in their browsers with preloaded runtimes, package managers, and debugging tools for those developing apps in Node.js (JavaScript), Python, PHP, Ruby, Go, and C++. Cloud9 allows you to access your work environment from any internet-connected computer, removing the need for a dedicated development machine.

AWS Cloud9 provides convenient access to their AWS resources via a preset AWS Command Line Interface (AWS CLI), ready to perform commands against AWS services, for AWS developers and those assessing new AWS services. Cloud9 has built-in tools for creating, editing, running, debugging, and deploying Lambda functions for those developing serverless apps on AWS Lambda using Node.js or Python.

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Ques. 3): What kinds of AWS Cloud9 development environments are there?


You can use one of two types of AWS Cloud9 setups.

AWS Cloud9 EC2 environment — Allows you to create a new Amazon EC2 instance with Cloud9. These instances are set to terminate 30 minutes after you close the IDE and start immediately when you open it.

SSH environment on AWS Cloud9 — Allows you to join an existing Linux server to Cloud9. On the Linux server that you intend to use with Cloud9 SSH environments, certain requirements are required.

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Ques. 4): What is AWS Cloud9, exactly?


AWS Cloud9 is a browser-based integrated development environment (IDE) that allows you to write, run, and debug code. It combines code completion, hinting, and step-through debugging with access to a full Linux server for running and storing code.

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Ques. 5): How can I execute my code?


The AWS Cloud9 IDE has a run button in the toolbar as well as built-in runners for over 10 languages that will immediately start your application with the most recent code modifications. You can also alter current runners, develop your own runners, or run your code from the terminal if you want complete control over how your product is run.

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Ques. 6): How much does AWS Cloud9 cost?


AWS Cloud9 comes at no additional cost. You only pay for the compute and storage resources (i.e., an EC2 instance, an EBS volume) that are utilised to run and store your code if you use an Amazon EC2 instance for your AWS Cloud9 development environment. For no additional price, you can connect your Cloud9 development environment to an existing Linux server (e.g., on-premises server) through SSH.

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Ques. 7): What is the best way to use AWS Cloud9 with AWS CodeStar?


You can start modifying and committing your CodeStar project code in the Cloud9 IDE right away after launching AWS Cloud9 environments from AWS CodeStar. Any code changes you commit to your project source repository from Cloud9 are compiled and deployed automatically using CodeStar's tools.

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Ques. 8): What resources does AWS Cloud9 create for Amazon EC2 environments?


AWS Cloud9 creates the needed computation and storage resources in your AWS account when you create an Amazon EC2 environment. An Amazon EC2 instance, an Amazon Elastic Block Store (EBS) volume of 8 GB, an Amazon EC2 security group, and an AWS CloudFormation stack are among the resources. These resources are accessible through the different AWS service consoles. Cloud9 automatically deletes these resources when you erase your environment.

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Ques. 9): What is the location of my code on AWS Cloud9?


Code files, packages, and dependencies are all kept in your resources in your AWS Cloud9 environment. Your data is stored in the appropriate Amazon Elastic Block Store (EBS) volume in your AWS account if you use an EC2 environment. Your data is saved locally on your Linux server if you use an SSH environment.

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Ques. 10): How can I use AWS Cloud9 to construct serverless applications for AWS Lambda?


The AWS Resources panel in the IDE contains the built-in tools for AWS Lambda. These utilities can be used to import or generate Lambda functions in Node.js and Python. These routines can be quickly launched, previewed, debugged, and deployed right from the IDE. The AWS Serverless Application Model (AWS SAM) framework is also supported by AWS Cloud9. You may now handle many Lambda functions and serverless resources in your application with ease. If you used AWS CodeStar to provide your project, any changes you make to it will be built and sent to Lambda using git push.

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Ques. 11): Is it possible to modify the instance type of an Amazon EC2 environment that already exists?


Yes. With your AWS Cloud9 environment, you can change the Amazon EC2 instance type you previously selected. To do so, go to the EC2 console and locate your instance, then follow the procedures in the Amazon EC2 documentation.

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Ques. 12): Can I use AWS Cloud9 to test my AWS Lambda functions locally?


Yes. AWS Cloud9 can run your Node.js and Python functions locally in the IDE, simulating the AWS Lambda execution environment. This allows you to step-through debug your serverless applications without having to upload your changes to Lambda. You may also deploy your application modifications to Lambda directly from the IDE once they've been tested.

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Ques. 13): What are the supported programming languages?


Node.js (JavaScript), Python, PHP, Ruby, Go, and C++ are among the programming languages supported by AWS Cloud9. It supports several major programming languages and offers features including syntax highlighting, outline view, code hinting, code completion, application runners, and step-through debugging.

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Ques. 14): How do I make changes to my code?


Auto-completion, code folding, hinting, syntax highlighting, and line manipulation are all included in the AWS Cloud9 IDE's powerful code editor. You can choose from over 30 colour schemes in the code editor to manage syntax highlighting and the UI. You may also update your CSS to completely personalise the Cloud9 UI.

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Ques. 15): Is AWS Cloud9 capable of managing resources developed in Amazon EC2 environments?


Cloud9 can not only create and delete your AWS Cloud9 EC2 environment resources on your behalf, but it can also start and stop the EC2 instances automatically to save you money. All other administration chores on these resources are your responsibility, including installing software patches on your EC2 instances and backing up your EBS volumes.

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Ques. 16): How do I access AWS services from AWS Cloud9?


AWS Cloud9 EC2 environments come preinstalled with the AWS CLI, which is authenticated with the permissions of the logged-in AWS user automatically. This enables you to run interactive CLI commands against AWS services from the built-in terminal window in Cloud9 without any additional configuration.

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Ques. 17): In AWS Cloud9 environments, are my Amazon EC2 instances always active?


No. For Amazon EC2 instances created with AWS Cloud9, the default auto-hibernation option is 30 minutes. Your EC2 instances will automatically halt 30 minutes after you close the IDE and resume only when you reopen it with this option. As a result, EC2 instance charges are often only incurred when you are actively working. When your instance needs to be restarted, you lose any open terminal sessions in the IDE and may have to wait a bit to open it. You can modify the auto-hibernation setting and even choose to keep your EC2 instance "always on" depending on your use case.

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Ques. 18): On AWS Cloud9 EC2 setups, what tools and packages are preinstalled?


AWS Cloud9 EC2 setups provide popular development tools like Git and Docker preinstalled. Many popular programming languages, such as Node.js and Python, have language runtimes and package managers.

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Ques. 19): What is the best way to share my AWS Cloud9 installation with others?


Click the Share button in the top right corner of your IDE to share your AWS Cloud9 environment. The AWS Identity and Access Management (IAM) user name and desired access levels for the individual with whom you want to collaborate are requested. Once you've entered these details, both participants can use the environment for real-time collaboration on IDE features and command line sessions.

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Ques. 20): What are the steps for connecting to source control management systems?


You may use the same command line tools on your local PC to access your source control system by opening the terminal window within the IDE. Git is preinstalled on AWS Cloud9 EC2 environments, making it easy to retrieve your source code.

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