Explore topic-wise InterviewSolutions in Amazon.

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1.

What is the advantage and disadvantage of cloud computing?

Answer» <html><body><table><tbody><tr><th>S.no</th><th>Advantages</th><th>Disadvantages</th></tr></tbody><tbody><tr><td>1.</td><td>Cost <a href="https://interviewquestions.tuteehub.com/tag/efficient-244485" style="font-weight:bold;" target="_blank" title="Click to know more about EFFICIENT">EFFICIENT</a> option</td><td>Vulnerability to online attacks</td></tr><tr><td>2.</td><td>Excellent accessibility</td><td>Dependency on network connectivity</td></tr><tr><td>3.</td><td>Easy <a href="https://interviewquestions.tuteehub.com/tag/backup-18158" style="font-weight:bold;" target="_blank" title="Click to know more about BACKUP">BACKUP</a> and data restoration</td><td>Vendor lock-in</td></tr><tr><td>4.</td><td>Strategic edge</td><td>Limited control</td></tr><tr><td>5.</td><td>Quick and efficient manageability</td><td>Downtime</td></tr><tr><td>6.</td><td>Sporadic <a href="https://interviewquestions.tuteehub.com/tag/batch-893737" style="font-weight:bold;" target="_blank" title="Click to know more about BATCH">BATCH</a> <a href="https://interviewquestions.tuteehub.com/tag/processing-25579" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESSING">PROCESSING</a></td><td> </td></tr></tbody></table></body></html>
2.

What is the purpose of AWS?

Answer» <html><body><ul><li>To operate application and web <a href="https://interviewquestions.tuteehub.com/tag/servers-1202524" style="font-weight:bold;" target="_blank" title="Click to know more about SERVERS">SERVERS</a> in the <a href="https://interviewquestions.tuteehub.com/tag/cloud-11874" style="font-weight:bold;" target="_blank" title="Click to know more about CLOUD">CLOUD</a> for dynamic web hosting.</li><li>Large and secure cloud-based <a href="https://interviewquestions.tuteehub.com/tag/platform-25930" style="font-weight:bold;" target="_blank" title="Click to know more about PLATFORM">PLATFORM</a> to store <a href="https://interviewquestions.tuteehub.com/tag/files-20889" style="font-weight:bold;" target="_blank" title="Click to know more about FILES">FILES</a> and easy access them anywhere and anyplace.</li><li>Use of most advanced and popular databases such as Oracle, PostgreSQL, SQL Server or MySQL to store user preferred information.</li><li>Quick delivery of dynamic and static files around the globe using CDN – Content Delivery Network.</li><li>Deliver user-specified services only</li><li>Bulk email <a href="https://interviewquestions.tuteehub.com/tag/sending-1200600" style="font-weight:bold;" target="_blank" title="Click to know more about SENDING">SENDING</a> to customers.</li></ul></body></html>
3.

What is AWS and how does it work?

Answer» <html><body><p>Simplified, AWS of Amazon Web Service is a wide range of advanced cloud computing applications which allows <a href="https://interviewquestions.tuteehub.com/tag/users-25567" style="font-weight:bold;" target="_blank" title="Click to know more about USERS">USERS</a> to lease Amazon’s servers instead of purchasing their own. This makes <a href="https://interviewquestions.tuteehub.com/tag/storing-1228386" style="font-weight:bold;" target="_blank" title="Click to know more about STORING">STORING</a> a <a href="https://interviewquestions.tuteehub.com/tag/large-1066424" style="font-weight:bold;" target="_blank" title="Click to know more about LARGE">LARGE</a> <a href="https://interviewquestions.tuteehub.com/tag/amount-246331" style="font-weight:bold;" target="_blank" title="Click to know more about AMOUNT">AMOUNT</a> of data and running applications faster, cheaper and more comfortable. AWS owns network-connected hardware required for application services, while users provision and utilize as per their requirements <a href="https://interviewquestions.tuteehub.com/tag/via-723599" style="font-weight:bold;" target="_blank" title="Click to know more about VIA">VIA</a> various web applications.</p></body></html>
4.

What is ElastiCache used for?

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5.

Explain the difference between Amazon EBS and s3?

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6.

What is the difference between AWS and ec2?

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7.

Can we change the instance type in AWS?

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8.

What is t2 in AWS?

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9.

What is Route propagation in AWS?

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10.

What happens to your data when an ec2 instance is terminated?

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11.

How do I create an elastic IP on AWS?

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12.

What is an Elastic IP in AWS?

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13.

How do I create a subnet on AWS?

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14.

What is AWS subnet?

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15.

What is RDS in AWS?

Answer» <html><body><p>Amazon <a href="https://interviewquestions.tuteehub.com/tag/rds-613644" style="font-weight:bold;" target="_blank" title="Click to know more about RDS">RDS</a> or Amazon Relational Database Service is a web-based service which helps users for cloud-based relational database setup, operation, and scale. It <a href="https://interviewquestions.tuteehub.com/tag/offers-1129020" style="font-weight:bold;" target="_blank" title="Click to know more about OFFERS">OFFERS</a> <a href="https://interviewquestions.tuteehub.com/tag/excellent-2543" style="font-weight:bold;" target="_blank" title="Click to know more about EXCELLENT">EXCELLENT</a> resizable capacity and cost efficient for a relational database which is <a href="https://interviewquestions.tuteehub.com/tag/industry-248602" style="font-weight:bold;" target="_blank" title="Click to know more about INDUSTRY">INDUSTRY</a> stranded and also manages common database administration tasks.</p></body></html>
16.

How to create a classic load balancer in AWS?

Answer» <html><body><p>Follow the below mentioned steps to <a href="https://interviewquestions.tuteehub.com/tag/create-427332" style="font-weight:bold;" target="_blank" title="Click to know more about CREATE">CREATE</a> a <a href="https://interviewquestions.tuteehub.com/tag/classic-420498" style="font-weight:bold;" target="_blank" title="Click to know more about CLASSIC">CLASSIC</a> load balancer:</p><ul><li>Select a load balancer type</li><li>Define that load balancer</li><li>Now assign security groups to that load balancer in VPC</li><li>Then configure health checks for EC2 instances</li><li>Continue with a registeringEC2 <a href="https://interviewquestions.tuteehub.com/tag/instance-25561" style="font-weight:bold;" target="_blank" title="Click to know more about INSTANCE">INSTANCE</a> with a load balancer</li><li>Tag the load balancer</li><li>Now create and verify that load balancer to <a href="https://interviewquestions.tuteehub.com/tag/finish-989314" style="font-weight:bold;" target="_blank" title="Click to know more about FINISH">FINISH</a> the proces</li></ul></body></html>
17.

What is Load Balancer and how it works in AWS?

Answer» <html><body><p>In AWS, the load balancer improves responsiveness and exceptionally increases the availability of <a href="https://interviewquestions.tuteehub.com/tag/applications-19673" style="font-weight:bold;" target="_blank" title="Click to know more about APPLICATIONS">APPLICATIONS</a>. It sits between server firm and client accepting application traffic, incoming network and <a href="https://interviewquestions.tuteehub.com/tag/distributing-956937" style="font-weight:bold;" target="_blank" title="Click to know more about DISTRIBUTING">DISTRIBUTING</a> that traffic <a href="https://interviewquestions.tuteehub.com/tag/across-367070" style="font-weight:bold;" target="_blank" title="Click to know more about ACROSS">ACROSS</a> <a href="https://interviewquestions.tuteehub.com/tag/multiple-1105557" style="font-weight:bold;" target="_blank" title="Click to know more about MULTIPLE">MULTIPLE</a> backend servers with the <a href="https://interviewquestions.tuteehub.com/tag/help-239643" style="font-weight:bold;" target="_blank" title="Click to know more about HELP">HELP</a> of various methods. It agrees with the client’s incoming traffic and routes requests to the registered targets in availability zones. The load balancer also reviews the health of registered marks and makes sure that the traffic should only be routed to useful destinations.</p></body></html>
18.

What is Amazon CloudFront used for?

Answer» <html><body><p>Amazon CloudFront is an advanced content delivery network offered by AWS which provide a globally-distributed network of proxy servers that cache content such as web videos and another type of <a href="https://interviewquestions.tuteehub.com/tag/big-896707" style="font-weight:bold;" target="_blank" title="Click to know more about BIG">BIG</a> media, locally to consumers. This exceptionally <a href="https://interviewquestions.tuteehub.com/tag/improves-7688921" style="font-weight:bold;" target="_blank" title="Click to know more about IMPROVES">IMPROVES</a> the <a href="https://interviewquestions.tuteehub.com/tag/access-846773" style="font-weight:bold;" target="_blank" title="Click to know more about ACCESS">ACCESS</a> speed for <a href="https://interviewquestions.tuteehub.com/tag/downloading-959080" style="font-weight:bold;" target="_blank" title="Click to know more about DOWNLOADING">DOWNLOADING</a> the content for users.</p></body></html>
19.

What is lambda and why AWS lambda is used?

Answer» <html><body><p>AWS Lambda is an advance compute service that lets users run code without managing or provisioning servers. Users can also build here <a href="https://interviewquestions.tuteehub.com/tag/serverless-7263972" style="font-weight:bold;" target="_blank" title="Click to know more about SERVERLESS">SERVERLESS</a> applications which are <a href="https://interviewquestions.tuteehub.com/tag/composed-2533759" style="font-weight:bold;" target="_blank" title="Click to know more about COMPOSED">COMPOSED</a> of functions and triggered by events and automatically <a href="https://interviewquestions.tuteehub.com/tag/deployed-7256641" style="font-weight:bold;" target="_blank" title="Click to know more about DEPLOYED">DEPLOYED</a> using AWS CodeBuild and CodePipeline. The AWS Lambda is used to:</p><ul><li>Build on-demand and smaller applications which are responsive to events and new information.</li><li>Support native Linux executables <a href="https://interviewquestions.tuteehub.com/tag/operate-586874" style="font-weight:bold;" target="_blank" title="Click to know more about OPERATE">OPERATE</a> securely by calling them out from a supported runtime.</li><li>Execute code in response to triggers.</li><li>Real time file and stream processing.</li><li>Perform data sorting, filtering, validation and other changes for data in a DynamoDB table and then <a href="https://interviewquestions.tuteehub.com/tag/load-11593" style="font-weight:bold;" target="_blank" title="Click to know more about LOAD">LOAD</a> them to another data store.</li></ul></body></html>
20.

What is lifecycle hook in AWS?

Answer» <html><body><p>In AWS, the lifecycle hook is a feature included in the auto <a href="https://interviewquestions.tuteehub.com/tag/scaling-637468" style="font-weight:bold;" target="_blank" title="Click to know more about SCALING">SCALING</a> which helps to control instance launch and termination state within the auto scaling group. It remains in a waiting mode for a certain amount of time when the instance is paused. We can <a href="https://interviewquestions.tuteehub.com/tag/create-427332" style="font-weight:bold;" target="_blank" title="Click to know more about CREATE">CREATE</a> lifecycle hooks by using the command</p><p><strong>put-lifecycle-hook</strong>. Lifecycle hooks are <a href="https://interviewquestions.tuteehub.com/tag/also-373387" style="font-weight:bold;" target="_blank" title="Click to know more about ALSO">ALSO</a> customizable with various actions such as by defining a target notification for the lifecycle hook, creating an instance running script as the instance starts or determining a CloudWatch <a href="https://interviewquestions.tuteehub.com/tag/event-343411" style="font-weight:bold;" target="_blank" title="Click to know more about EVENT">EVENT</a> target to invoke functions associated with the Lambda when the lifecycle <a href="https://interviewquestions.tuteehub.com/tag/action-2544" style="font-weight:bold;" target="_blank" title="Click to know more about ACTION">ACTION</a> occurs.</p></body></html>
21.

What is the difference between snapshot and AMI?

Answer» <html><body><table><tbody><tr><th>S.no</th><th>Snapshot</th><th>AMI</th></tr></tbody><tbody><tr><td>1.</td><td>A snapshot of the file system that <a href="https://interviewquestions.tuteehub.com/tag/user-25565" style="font-weight:bold;" target="_blank" title="Click to know more about USER">USER</a> <a href="https://interviewquestions.tuteehub.com/tag/able-361137" style="font-weight:bold;" target="_blank" title="Click to know more about ABLE">ABLE</a> to mount to an EC2 instance.</td><td>It’s a pre-built image of the <a href="https://interviewquestions.tuteehub.com/tag/server-11236" style="font-weight:bold;" target="_blank" title="Click to know more about SERVER">SERVER</a> that <a href="https://interviewquestions.tuteehub.com/tag/users-25567" style="font-weight:bold;" target="_blank" title="Click to know more about USERS">USERS</a> can deploy to EC2.</td></tr><tr><td>2.</td><td>Holds only data that has changed <a href="https://interviewquestions.tuteehub.com/tag/since-644476" style="font-weight:bold;" target="_blank" title="Click to know more about SINCE">SINCE</a> the previous snapshot.</td><td>When AMI is created, it holds a partial record of the volume.</td></tr></tbody></table></body></html>
22.

What is AMI and how to create an AWS AMI?

Answer» <html><body><p>AMI or <a href="https://interviewquestions.tuteehub.com/tag/amazon-12922" style="font-weight:bold;" target="_blank" title="Click to know more about AMAZON">AMAZON</a> Machine Image is a virtual <a href="https://interviewquestions.tuteehub.com/tag/appliance-882010" style="font-weight:bold;" target="_blank" title="Click to know more about APPLIANCE">APPLIANCE</a> particular type, used to instantiate a virtual machine within Amazon EC2 or Amazon <a href="https://interviewquestions.tuteehub.com/tag/elastic-967540" style="font-weight:bold;" target="_blank" title="Click to know more about ELASTIC">ELASTIC</a> Compute <a href="https://interviewquestions.tuteehub.com/tag/cloud-11874" style="font-weight:bold;" target="_blank" title="Click to know more about CLOUD">CLOUD</a>. AMI serves as the basic <a href="https://interviewquestions.tuteehub.com/tag/deployment-948603" style="font-weight:bold;" target="_blank" title="Click to know more about DEPLOYMENT">DEPLOYMENT</a> unit for services delivered using EC2.</p></body></html>
23.

What does s3 stand for in AWS?

Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/amazon-12922" style="font-weight:bold;" target="_blank" title="Click to know more about AMAZON">AMAZON</a> <a href="https://interviewquestions.tuteehub.com/tag/s3-241830" style="font-weight:bold;" target="_blank" title="Click to know more about S3">S3</a> stands for Amazon Simple Storage Service which is an Amazon <a href="https://interviewquestions.tuteehub.com/tag/web-11417" style="font-weight:bold;" target="_blank" title="Click to know more about WEB">WEB</a> <a href="https://interviewquestions.tuteehub.com/tag/services-248961" style="font-weight:bold;" target="_blank" title="Click to know more about SERVICES">SERVICES</a> <a href="https://interviewquestions.tuteehub.com/tag/offered-7257483" style="font-weight:bold;" target="_blank" title="Click to know more about OFFERED">OFFERED</a> simple storage service and offers object storage through a web service interface.</p></body></html>
24.

What is ec2 in AWS?

Answer» <html><body><p>EC2 or Elastic Compute Cloud is a web-based service that permits businesses to <a href="https://interviewquestions.tuteehub.com/tag/run-1192138" style="font-weight:bold;" target="_blank" title="Click to know more about RUN">RUN</a> application programs in the <a href="https://interviewquestions.tuteehub.com/tag/amazon-12922" style="font-weight:bold;" target="_blank" title="Click to know more about AMAZON">AMAZON</a> Web Services public cloud. The service is specially designed to <a href="https://interviewquestions.tuteehub.com/tag/make-249948" style="font-weight:bold;" target="_blank" title="Click to know more about MAKE">MAKE</a> web-scale cloud <a href="https://interviewquestions.tuteehub.com/tag/computing-927912" style="font-weight:bold;" target="_blank" title="Click to know more about COMPUTING">COMPUTING</a> easier for developers. It also allows developers to obtain as well as configure capacity with <a href="https://interviewquestions.tuteehub.com/tag/minimal-1097157" style="font-weight:bold;" target="_blank" title="Click to know more about MINIMAL">MINIMAL</a> friction.</p></body></html>
25.

How do I enable auto-scaling in AWS?

Answer» <html><body><p>To set up auto-scaling in AWS, follow these steps:</p><ul><li><a href="https://interviewquestions.tuteehub.com/tag/access-846773" style="font-weight:bold;" target="_blank" title="Click to know more about ACCESS">ACCESS</a> EC2 console and <a href="https://interviewquestions.tuteehub.com/tag/select-630282" style="font-weight:bold;" target="_blank" title="Click to know more about SELECT">SELECT</a> <a href="https://interviewquestions.tuteehub.com/tag/launch-246614" style="font-weight:bold;" target="_blank" title="Click to know more about LAUNCH">LAUNCH</a> Configuration from Auto Scaling</li><li>Choose AMI and select Amazon Machine Image present in My AMIs tab</li><li>Choose the type of the <a href="https://interviewquestions.tuteehub.com/tag/instance-25561" style="font-weight:bold;" target="_blank" title="Click to know more about INSTANCE">INSTANCE</a> and click <a href="https://interviewquestions.tuteehub.com/tag/configure-929061" style="font-weight:bold;" target="_blank" title="Click to know more about CONFIGURE">CONFIGURE</a> details</li><li>Now name the configuration</li><li>Add storage and security groups</li><li>Click on Create launch configuration</li></ul></body></html>
26.

What is scalability AWS?

Answer» <html><body><p>In AWS, scalability is a system able to increase the workload on its <a href="https://interviewquestions.tuteehub.com/tag/current-240611" style="font-weight:bold;" target="_blank" title="Click to know more about CURRENT">CURRENT</a> hardware <a href="https://interviewquestions.tuteehub.com/tag/resources-11387" style="font-weight:bold;" target="_blank" title="Click to know more about RESOURCES">RESOURCES</a>. It accommodates larger <a href="https://interviewquestions.tuteehub.com/tag/loads-1076721" style="font-weight:bold;" target="_blank" title="Click to know more about LOADS">LOADS</a> by adding resources either by adding <a href="https://interviewquestions.tuteehub.com/tag/additional-367648" style="font-weight:bold;" target="_blank" title="Click to know more about ADDITIONAL">ADDITIONAL</a> nodes or making hardware stronger.</p></body></html>
27.

How many security groups are there in VPC?

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28.

How to connect to VPC in different regions?

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29.

What is the max size of an object that can be uploaded through the s3 console?

Answer» <html><body><p>The individual objects that can be uploaded through the s3 console can range from 0 bytes to a <a href="https://interviewquestions.tuteehub.com/tag/maximum-556915" style="font-weight:bold;" target="_blank" title="Click to know more about MAXIMUM">MAXIMUM</a> <a href="https://interviewquestions.tuteehub.com/tag/limit-237994" style="font-weight:bold;" target="_blank" title="Click to know more about LIMIT">LIMIT</a> of <a href="https://interviewquestions.tuteehub.com/tag/5-237653" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a> terabytes, whereas the most massive <a href="https://interviewquestions.tuteehub.com/tag/object-11416" style="font-weight:bold;" target="_blank" title="Click to know more about OBJECT">OBJECT</a> that can be uploaded in a single PUT is 5 gigabytes. Customers have to use Multipart Upload capability to upload an object more significant than 100 megabytes.</p></body></html>
30.

How do I connect to Amazon s3?

Answer» <html><body><p>To <a href="https://interviewquestions.tuteehub.com/tag/connect-11879" style="font-weight:bold;" target="_blank" title="Click to know more about CONNECT">CONNECT</a> to Amazon S3, we have to follow these below-mentioned steps:</p><ul><li>Get the <a href="https://interviewquestions.tuteehub.com/tag/login-11607" style="font-weight:bold;" target="_blank" title="Click to know more about LOGIN">LOGIN</a> <a href="https://interviewquestions.tuteehub.com/tag/credentials-938512" style="font-weight:bold;" target="_blank" title="Click to know more about CREDENTIALS">CREDENTIALS</a> from Amazon Portal –Access Credentials web page.</li><li>Then, open a <a href="https://interviewquestions.tuteehub.com/tag/new-1114486" style="font-weight:bold;" target="_blank" title="Click to know more about NEW">NEW</a> connection</li><li>Go to menu –File –Connection</li><li>Now select the S3 protocol</li><li>After that select Amazon S3</li><li>Enter the <a href="https://interviewquestions.tuteehub.com/tag/previously-7318154" style="font-weight:bold;" target="_blank" title="Click to know more about PREVIOUSLY">PREVIOUSLY</a> obtained username and password</li><li>Finally, click OK to connect</li></ul></body></html>