Showing posts with label dynamicDB. Show all posts
Showing posts with label dynamicDB. Show all posts

February 10, 2023

Top 20 AWS Application Migration Service(MGN) Interview Questions and Answers

  

The recommended service for migrations to AWS is AWS Application Migration Service (AWS MGN). By automatically migrating your source servers from physical, virtual, or cloud infrastructure to run natively on AWS, the AWS Application Move Service streamlines and accelerates your migration to AWS. By enabling you to use the same automated method for a variety of applications without modifying the programmes, their architecture, or the moved servers, it further simplifies your migration and lowers costs. You can run non-disruptive testing before the switchover using AWS Application Migration Service. After testing, you may swiftly transfer your apps to the cloud using AWS Application Migration Service during a brief cutover window, usually measured in minutes. You can also use AWS Application Migration Service to automate application modernizations on your migrated servers.

 

AWS(Amazon Web Services) Interview Questions and Answers

AWS Cloud Interview Questions and Answers

AWS Control Tower Interview Questions and Answers

 

Ques. 1): Where is CloudEndure Migration available?

Answer:

Based on CloudEndure Migration, AWS Application Migration Service (AWS MGN) enhances it by connecting with the AWS Management Console. AWS Application Migration Service and other AWS services are covered in more detail in the section below labelled "AWS Application Migration Service and other AWS services."

As of December 30, 2022, CloudEndure Migration won't be usable in the majority of AWS Regions. Through 2023, it will still be accessible for migrations into the GovCloud and China Regions.

 

AWS AppSync Interview Questions and Answers

AWS Cloud9 Interview Questions and Answers

AWS Lake Formation Interview Questions and Answers

 

Ques. 2): Can I transition from EC2-Classic to a VPC using the AWS Application Migration Service?

Answer:

Yes, you may move your databases and instances from EC2-Classic to VPC with little to no downtime by using AWS Application Migration Service. Find out more about how to move from EC2-Classic to a VPC and how to get ready for EC2-Classic to retire.

 

Amazon Athena Interview Questions and Answers

AWS RedShift Interview Questions and Answers

AWS Data Pipeline Interview Questions and Answers

 

Ques. 3): Can I use AWS Application Migration Service to duplicate my data to AWS without utilising the open internet?

Answer:

Yes, using private connectivity options like a VPN, AWS Direct Connect, VPC peering, or any private connection, you can control the data replication path using AWS Application Migration Service.


AWS Cloud Practitioner Essentials Questions and Answers

AWS EC2 Interview Questions and Answers

Amazon CloudSearch Interview Questions and Answers 

 

Ques. 4): How is the AWS Application Migration Service priced?

Answer:

You get a free usage window of 2,160 hours, or 90 days, to use the AWS Application Migration Service for any source server you wish to move.

The free time extends throughout active source server replication when you install the AWS Replication Agent on your source server.

You will be charged per hour while you keep duplicating a particular server if you do not finish your migration of it within the free time frame. The majority of clients finish server migrations within the specified free time.

Note that you will be charged for any AWS infrastructure that is set up by AWS Application Migration Service to enable data replication while your source servers are actively replicating, including during the free period. In accordance with your AWS pricing plan, you will additionally be charged for resources such as computation (Amazon EC2) and storage (Amazon EBS) that are provided when test or cutover instances are launched.


AWS Lambda Interview Questions and Answers

AWS Cloud Security Interview Questions and Answers

AWS Transit Gateway Interview Questions and Answers

 

Ques. 5): How should I decide which AWS migration service to use?

Answer:

The recommended service for migrations to AWS is AWS Application Migration Service.

If you are presently working on a migration project, you can keep utilising CloudEndure Migration. Please consult AWS Premium Support or your Technical Account Manager (TAM) to determine the ideal timing to move to AWS Application Migration Service if your present project is anticipated to last longer than a few months.


AWS Simple Storage Service (S3) Interview Questions and Answers

AWS Fargate Interview Questions and Answers

Amazon Detective Interview Questions and Answers

 

Ques. 6): Can I use AWS Application Migration Service and AWS Migration Hub together?

Answer:

Yes, AWS Migration Hub and AWS Application Migration Service are connected, and you can monitor the servers you are migrating using AWS Application Migration Service from the AWS Migration Hub UI.

 

AWS SageMaker Interview Questions and Answers

AWS DynamoDB Interview Questions and Answers

Amazon EMR Interview Questions and Answers

 

Ques. 7): How is my data encrypted using AWS Application Migration Service as it travels from my source server to AWS?

Answer:

Your replicated data is sent directly from your source servers to your VPC while being encrypted in transit using TLS 1.2. Using Amazon EBS encryption, your data is also protected while it is in storage on AWS.


AWS Cloudwatch interview Questions and Answers

AWS Elastic Block Store (EBS) Interview Questions and Answers

Amazon OpenSearch Interview Questions and Answers

 

Ques. 8): Agentless replication is it supported by AWS Application Migration Service?

Answer:

Yes. From VMware vCenter versions 6.7 and 7.0 to AWS, agentless replication is supported by AWS Application Migration Service. By installing the AWS MGN vCenter Client in your vCenter environment, you may perform agentless snapshot replication from your vCenter source environment to AWS. Users that want to move their apps to AWS but are unable to install agents because of corporate regulations or technical limitations may consider this solution. We advise utilising agent-based replication wherever possible because it offers continuous data replication and reduces cutover windows.


AWS Amplify Interview Questions and Answers

AWS Secrets Manager Interview Questions and Answers

AWS FinSpace Interview Questions and Answers

 

Ques. 9): Does AWS Application Migration Service support any source infrastructure?

Answer:

You can move your apps from physical servers, VMware vSphere, Microsoft Hyper-V, and other cloud providers to AWS using the AWS Application Migration Service. Additionally, you can move Amazon EC2 instances between AWS Regions or AWS Accounts, as well as from EC2-Classic to a VPC, using the AWS Application Migration Service.

 

AWS Django Interview Questions and Answers

AWS Cloud Support Engineer Interview Question and Answers

AWS MSK Interview Questions and Answers

 

Ques. 10): What is AWS Application Migration Service, and how do I use it?

Answer:

Simply click here to begin utilising AWS Application Migration Service, or sign into the AWS Management Console and select "AWS Application Migration Service" under the "Migration & Transfer" section. To set up and run AWS Application Migration Service, you can adhere to the instructions provided in the console.

AWS MGN, or the AWS Application Migration Service, If you wish to learn more about how to utilise the service or if you are supporting clients with a migration using AWS Application Migration Service, a Technical Introduction session is advised. Key ideas, service design, and implementation strategies for the AWS Application Migration Service are covered in the free online course from AWS Training and Certification.

 

AWS Solution Architect Interview Questions and Answers

AWS Glue Interview Questions and Answers

AWS EventBridge Interview Questions and Answers

 

Ques. 11): What is AWS Application Migration Service, and how do I use it?

Answer:

Simply click here to begin utilising AWS Application Migration Service, or sign into the AWS Management Console and select "AWS Application Migration Service" under the "Migration & Transfer" section. To set up and run AWS Application Migration Service, you can adhere to the instructions provided in the console.

AWS MGN, or the AWS Application Migration Service, If you wish to learn more about how to utilise the service or if you are supporting clients with a migration using AWS Application Migration Service, a Technical Introduction session is advised. Key ideas, service design, and implementation strategies for the AWS Application Migration Service are covered in this free online course from AWS Training and Certification.

 

AWS Cloud Interview Questions and Answers

AWS VPC Interview Questions and Answers         

AWS Simple Notification Service (SNS) Interview Questions and Answers

 

Ques. 12): What are the primary distinctions between CloudEndure Migration and AWS Application Migration Service?

Answer:

The successor to CloudEndure Migration, AWS Application Migration Service, provides important functionality and operational advantages that are not offered by CloudEndure Migration. You can, for instance, manage the service from the AWS Management Console while using the AWS Application Migration Service.

  • Utilize AWS Identity and Access Management to manage access and permissions (IAM).
  • Without a connection to the public internet, run the service.
  • In the same AWS Region as your transferred instances, keep your migration metadata.
  • If necessary, use an agentless replication option (for vCenter).
  • Use a new API that is more appropriate for workflows specialised to migrations, together with a CLI and SDKs.
  • Use Amazon CloudWatch and AWS CloudTrail to monitor AWS Application Migration Service.
  • Better control how your test and cutover instances are launched using Amazon EC2 launch templates (rather than Blueprints).
  • Use tags to organize your source servers and control access permissions.
  • Automate modernizations to your migrated applications.

 

AWS DevOps Cloud Interview Questions and Answers

AWS Aurora Interview Questions and Answers

AWS QuickSight Interview Questions and Answers

 

Ques. 13): What software and operating systems does AWS Application Migration Service support?

Answer:

You can move physical, virtual, and cloud source servers to AWS for a number of supported operating systems using the AWS Application Migration Service (OS). Applications including SAP, Oracle, and Microsoft SQL Server are supported by AWS Application Migration Service.

 

AWS Database Interview Questions and Answers

AWS ActiveMQ Interview Questions and Answers

AWS SQS Interview Questions and Answers

 

Ques. 14): How can I get AWS Application Migration Service product support?

Answer:

To receive product assistance for AWS Application Migration Service in accordance with your support package, get in touch with AWS Premium Support.

 

AWS CloudFormation Interview Questions and Answers

AWS GuardDuty Questions and Answers

AWS AppFlow Interview Questions and Answers

 

More on AWS:

 

AWS QLDB Interview Questions and Answers

AWS STEP Functions Interview Questions and Answers

Amazon Managed Blockchain Questions and Answers

AWS Message Queue(MQ) Interview Questions and Answers

AWS Serverless Application Model(SAM) Interview Questions and Answers

AWS X-Ray Interview Questions and Answers

AWS Wavelength Interview Questions and Answers

AWS Outposts Interview Questions and Answers

AWS Lightsail Questions and Answers

AWS Keyspaces Interview Questions and Answers

AWS ElastiCache Interview Questions and Answers

AWS ECR Interview Questions and Answers

AWS DocumentDB Interview Questions and Answers

AWS EC2 Auto Scaling Interview Questions and Answers

AWS Compute Optimizer Interview Questions and Answers

AWS CodeStar Interview Questions and Answers

AWS CloudShell Interview Questions and Answers

AWS Batch Interview Questions and Answers

AWS App2Container Questions and Answers

AWS App Runner Questions and Answers

AWS Timestream Interview Questions and Answers

AWS PinPoint Questions and Answers

AWS Neptune Interview Questions and Answers

AWS MemoryDB Questions and Answers

AWS CodeGuru Interview Questions and Answers

AWS Braket Interview Questions and Answers

AWS RDS Interview Questions and Answers

AWS WorkSpaces Interview Questions and Answers

AWS SAR Interview Questions and Answers

AWS Corretto Interview Questions and Answers

AWS SES Interview Questions and Answers

AWS Migration Evaluator Interview Questions and Answers



November 16, 2022

Top 20 AWS ECR Interview Questions and Answers

 

 

Developers can easily exchange and deploy container images and artefacts with Amazon ECR, a fully managed container registry. Your development to production process will be made simpler by Amazon ECR's integration with Amazon Elastic Container Service (Amazon ECS), Amazon Elastic Kubernetes Service (Amazon EKS), and AWS Lambda. Operating your own container repository and worrying about growing the underlying infrastructure are not necessary with Amazon ECR. You may deploy containers for your apps with confidence with Amazon ECR since it hosts your images in a highly available and scalable architecture. You may share photographs with everyone in the world or with other members of your business thanks to integration with AWS Identity and Access Management (IAM).

 

AWS(Amazon Web Services) Interview Questions and Answers

AWS Cloud Interview Questions and Answers

 

Ques. 1): A worldwide service, is Amazon ECR?

Answer:

A regional service called Amazon ECR is meant to allow you freedom over how pictures are delivered. For optimal speed, you can upload and download images to the same AWS Region as your Docker cluster. Additionally, you may access Amazon ECR from any location where Docker is installed, including desktops and on-premises settings. Images pulled from other Regions or the internet will incur more delay and data transfer fees.

 

AWS AppSync Interview Questions and Answers

AWS Cloud9 Interview Questions and Answers

 

Ques. 2): How can I organise my repositories and photos the best manner possible?

Answer:

In order to create, monitor, and remove repositories as well as modify repository permissions, Amazon ECR offers a command line interface and APIs. The same operations may be carried out in the Amazon ECR console by going to the "Repositories" section of the panel. You can publish, pull, and tag images via the Docker CLI using Amazon ECR, which is integrated with Docker.


Amazon Athena Interview Questions and Answers

AWS RedShift Interview Questions and Answers

 

Ques. 3): Why need I to utilise Amazon ECR?

Answer:

The infrastructure needed to run and grow your container registry is no longer necessary thanks to Amazon ECR. You may deploy new containers for your applications with confidence by using Amazon ECR, which leverages Amazon Simple Storage Service (S3) for storage to make your container images highly available and accessible. Your container images are sent over HTTPS and automatically encrypted while they are at rest by Amazon ECR. Each repository's permissions may be managed by policies that limit access to IAM users, roles, or other AWS accounts. You may streamline your development and production operations by integrating Amazon ECR with Amazon ECS, Amazon EKS, AWS Fargate, AWS Lambda, and the Docker CLI. You can easily push your container images to Amazon ECR using the Docker CLI from your development machine, and Amazon container orchestrators or compute can pull them directly for production deployments.


AWS Cloud Practitioner Essentials Questions and Answers

AWS EC2 Interview Questions and Answers


Ques. 4): Does AWS Elastic Beanstalk work with Amazon ECR?

Answer:

Yes. You may quickly deploy container images stored in Amazon ECR using AWS Elastic Beanstalk since it supports Amazon ECR for both single-container and multi-container Docker environments. You just need to apply the AmazonEC2ContainerRegistryReadOnly policy to your container instance role and provide the Amazon ECR repository in your Dockerrun.aws.json configuration.


AWS Lambda Interview Questions and Answers

AWS Cloud Security Interview Questions and Answers

 

Ques. 5): How can Amazon ECR contribute to the safety of container images?

Answer:

When transferring your container images over HTTPS, Amazon ECR automatically encrypts the images at rest using either AWS KMS or Amazon S3 server-side encryption. Instead of managing credentials directly on your EC2 instances, you may set rules using AWS Identity and Access Management (IAM) users and roles to manage permissions and regulate access to your pictures.


AWS Simple Storage Service (S3) Interview Questions and Answers

AWS Fargate Interview Questions and Answers

 

Ques. 6): Does Amazon ECR support any particular version of the Docker Image Manifest specification?

Answer:

The Docker Image Manifest V2, Schema 2 format is supported by Amazon ECR. Amazon ECR will continue to accept photos uploaded in the Schema 1 format to guarantee backwards compatibility with Schema 1 images. Additionally, when pulling with an older version of Docker Engine, Amazon ECR may down-translate from a Schema 2 to a Schema 1 image (1.9 and below).


AWS SageMaker Interview Questions and Answers

AWS DynamoDB Interview Questions and Answers

 

Ques. 7): Do Amazon ECR and Amazon ECS integrate well?

Answer:

Yes. Because Amazon ECR and Amazon ECS are connected, it's simple to store, execute, and manage container images for applications that use Amazon ECS. Amazon ECS will obtain the relevant images for your apps if you just provide the Amazon ECR repository in your task specification.


AWS Cloudwatch interview Questions and Answers

AWS Elastic Block Store (EBS) Interview Questions and Answers

 

Ques. 8): How do I pull a public image from Amazon ECR?

Answer:

You pull using the familiar ‘docker pull’ command with the URL of the image. You can easily search for this URL by finding images using a publisher alias, image name, or image description using the Amazon ECR public gallery. Image URLs are in the format public.ecr.aws/<alias>/<image>:<tag>, for example public.ecr.aws/eks/aws-alb-ingress-controller:v1.1.5


AWS Amplify Interview Questions and Answers

AWS Secrets Manager Interview Questions and Answers

 

Ques. 9): Does Amazon ECR check the security of container images?

Answer:

Your container images may be automatically scanned by Amazon ECR for a variety of operating system flaws. Additionally, you may scan photos by issuing an API call. When a scan is finished, Amazon ECR will alert you through API and on the console. You may activate Amazon Inspector for improved picture scanning.


AWS Django Interview Questions and Answers

AWS Cloud Support Engineer Interview Question and Answers

 

Ques. 10): Can public container images be hosted by Amazon ECR?

Answer:

Yes. You may publish or look for public container software with ease using the widely accessible container registry and website provided by Amazon ECR. Anyone with or without an AWS account may search and download frequently used container images, such as operating systems, AWS published images, and files, such as Helm charts for Kubernetes, from the Amazon ECR public gallery.


AWS Solution Architect Interview Questions and Answers

AWS Glue Interview Questions and Answers

 

Ques. 11): Can I create my own alias for my publicly visible images?

Answer:

Yes. Unless it's a reserved alias, you can request a bespoke alias such as your company or project name. Reserved names apply to AWS services. It's also possible to reserve names that identify AWS Marketplace vendors. Unless your request for a custom alias breaches the AWS Acceptable Use Policy or other AWS standards, we will examine and accept it within a few days.


AWS Cloud Interview Questions and Answers

AWS VPC Interview Questions and Answers         

 

Ques. 12): What is AWS Identity and Access Management (IAM) and how can I use it for permissions?

Answer:

You can regulate and track who and what (such as EC2 instances) may access your container images, as well as how, when, and where they can do so, using IAM resource-based controls. To begin, define resource-based policies for your repositories using the AWS Management Console. The Amazon ECR CLI also allows you to utilise example rules and add them to your repositories.


AWS DevOps Cloud Interview Questions and Answers

AWS Aurora Interview Questions and Answers

 

Ques. 13): The Open Container Initiative (OCI) format is supported by Amazon ECR?

Answer:

Yes. The Open Container Initiative (OCI) image specification is compatible with Amazon ECR, enabling you to push and pull OCI images and artefacts. On pull, OCI images, Schema 2 images, and Docker Image Manifest V2 images may all be translated via Amazon ECR.


AWS Database Interview Questions and Answers

AWS ActiveMQ Interview Questions and Answers

 

Ques. 14): What distinguishes public and private Amazon ECR repositories?

Answer:

Images cannot be fetched from a private repository because it lacks content search functionality and requires Amazon IAM-based verification using an AWS account. Anyone anywhere may extract photos from a public repository that provides descriptive information without the requirement for an AWS account or IAM credentials. The Amazon ECR public gallery also has photographs from the public repository.

 

AWS CloudFormation Interview Questions and Answers

AWS GuardDuty Questions and Answers

 

Ques. 15): How can I use Amazon ECR to publicly post an image?

Answer:

By logging into your AWS account and pushing to a public repository you establish, you may publish a picture to the Amazon ECR public gallery. All public photographs that you publish are given a special alias that you must use in image URLs.

 

AWS Control Tower Interview Questions and Answers

AWS Lake Formation Interview Questions and Answers

 

Ques. 16): Which compliance features are available on Amazon ECR?

Answer:

To give a history of all API operations, including who grabbed an image and when tags were transferred across pictures, you may use AWS CloudTrail on Amazon ECR. The EC2 instances that retrieved which photos are also visible to administrators.

 

AWS Data Pipeline Interview Questions and Answers

Amazon CloudSearch Interview Questions and Answers 

 

Ques. 17): Does federated access work with Amazon ECR?

Answer:

Yes. AWS Identity and Access Management (IAM), which allows identity federation for delegated access to the AWS Management Console or AWS APIs, is connected with Amazon ECR.

 

AWS Transit Gateway Interview Questions and Answers

Amazon Detective Interview Questions and Answers

 

Ques. 18): Can I use a VPC to access Amazon ECR?

Answer:

Yes. Instances may access pictures from your private repository without using the public internet by using AWS PrivateLink endpoints.

 

Amazon EMR Interview Questions and Answers

Amazon OpenSearch Interview Questions and Answers

 

Ques. 19): Do Amazon ECR images duplicate between AWS Regions?

Answer:

Yes. With Amazon ECR, you have freedom in where and how you store and distribute your photos. You may establish deployment pipelines that develop images and upload them to Amazon ECR in one Region. Amazon ECR will then duplicate those images automatically to other Regions and set up deployment to multi-Region clusters.

 

AWS FinSpace Interview Questions and Answers

AWS MSK Interview Questions and Answers

 

Ques. 20): Will Amazon ECR generate images from a Dockerfile automatically?

Answer:

No. To give this capacity, Amazon ECR, however, connects with a variety of well-liked CI/CD programmes.

 

 

More on AWS:

 

AWS EventBridge Interview Questions and Answers

AWS Simple Notification Service (SNS) Interview Questions and Answers

AWS QuickSight Interview Questions and Answers

AWS SQS Interview Questions and Answers

AWS AppFlow Interview Questions and Answers

AWS QLDB Interview Questions and Answers

AWS STEP Functions Interview Questions and Answers

Amazon Managed Blockchain Questions and Answers

AWS Message Queue(MQ) Interview Questions and Answers

AWS Serverless Application Model(SAM) Interview Questions and Answers

AWS X-Ray Interview Questions and Answers

AWS Wavelength Interview Questions and Answers

AWS Outposts Interview Questions and Answers

AWS Lightsail Questions and Answers

AWS Keyspaces Interview Questions and Answers

AWS ElastiCache Interview Questions and Answers

 


Top 20 AWS ElastiCache Interview Questions and Answers

 

         Web services like Amazon ElastiCache make it simple to set up and manage Memcached or Redis protocol-compliant server nodes in the cloud. With Amazon ElastiCache, you may get data from a quick, controlled, in-memory system rather than only relying on slower disk-based databases, which increases the speed of web applications. Your engineering resources may concentrate on creating applications as a result of the service's simplification and offloading of in-memory environment administration, monitoring, and operation. You may use Amazon ElastiCache to decrease the cost of scaling online applications while also enhancing load and response times to user actions and queries.

 

AWS(Amazon Web Services) Interview Questions and Answers

AWS Cloud Interview Questions and Answers

 

Ques: 1). What is Amazon ElastiCache?

Answer:

Common administrative activities needed to run a distributed in-memory key-value environment are automated by Amazon ElastiCache. With a few clicks on the AWS Management Console, you can quickly add a caching or in-memory layer using Amazon ElastiCache to your application design. A robust solution that reduces the danger of overcrowded databases, which degrade website and application load times, is provided by Amazon ElastiCache after a cluster is established. This technology automatically identifies and replaces failing nodes. The integration of Amazon ElastiCache with Amazon CloudWatch monitoring improves insight into the crucial performance indicators related to your nodes. Because Memcached and Redis are protocol-compliant, you may use the same code, programmes, and well-known tools you already use with your current Memcached or Redis installations with Amazon ElastiCache. With Amazon ElastiCache's support for clustered configuration, you can take advantage of a managed service that is quick, scalable, and simple to use while still being able to handle the demands of your most demanding applications. There are no upfront costs involved, and you just pay for the resources you use, like with other Amazon Web Services.

 

AWS AppSync Interview Questions and Answers

AWS Cloud9 Interview Questions and Answers

 

Ques: 2). What are the nodes, shards, and clusters of Amazon ElastiCache?

Answer:

The smallest component of an Amazon ElastiCache setup is a node. It is a fixed-size portion of safely connected network RAM. Each node has its own DNS name, port, and instance of the Memcached or Redis protocol-compliant service. There are several different types of supported nodes, each with a different amount of memory. A Redis shard is a portion of the cluster's keyspace, which may consist of a primary node and 0–n read replicas.


Amazon Athena Interview Questions and Answers

AWS RedShift Interview Questions and Answers

 

Ques: 3). What is handled on my behalf by Amazon ElastiCache?

Answer:

The setup of a distributed in-memory environment is handled by Amazon ElastiCache, which also handles the provisioning of the server resources and software installation. The solution automates routine administrative chores like failure detection and recovery and software patching once your environment is operational. You may rapidly identify problems by using the precise monitoring metrics that Amazon ElastiCache offers for your nodes. For instance, if one of your nodes becomes overwhelmed with requests, you may set up thresholds and get alarms.


AWS Cloud Practitioner Essentials Questions and Answers

AWS EC2 Interview Questions and Answers

 

Ques: 4). Amazon ElastiCache Reserved Nodes: What are they?

Answer:

When you commit to a one-year or three-year term, reserved nodes or reserved instances (RI) provide you a considerable discount over on-demand use. With Reserved Nodes, you may make a one-time, upfront payment to create a one- or three-year reservation to run your node in a certain Region and save a lot of money compared to the regular hourly usage fee. You may balance the upfront payment with your hourly rate by choosing one of three Reserved Node types: All Upfront, No Upfront, or Partial Upfront.


AWS Lambda Interview Questions and Answers

AWS Cloud Security Interview Questions and Answers

 

Ques: 5). A maintenance window is what? My nodes will be accessible during software maintenance, right?

Answer:

You might consider the Amazon ElastiCache maintenance window as a chance to decide when software patches are applied, should that be requested or necessary. If a "maintenance" event is planned for a specific week, it will start and end at the designated 60-minute maintenance window.

If software patching is planned during your maintenance window, your nodes can experience some outage. For further information, please see Engine Version Management. Patching may be requested by the user, such as when upgrading the cache software, or it may be deemed necessary (if we identify any security vulnerabilities in the system or caching software). Software patches should seldom take up more than a small portion of your maintenance window as they are applied infrequently (usually once every few months). A default value of 60 minutes is applied if you do not provide a desired weekly maintenance window when configuring your Cluster. By updating your DB Instance in the AWS Management Console or by using the ModifyCacheCluster API, you may change when maintenance is carried out on your behalf. If you like, each of your Clusters may have a distinct preferred maintenance window.


AWS Simple Storage Service (S3) Interview Questions and Answers

AWS Fargate Interview Questions and Answers

 

Ques: 6). Why do I need a subnet group and what does it accomplish?

Answer:

For your Amazon ElastiCache Cluster in a VPC, you must specify a Subnet Group, which is a group of subnets. With the help of the Amazon ElastiCache Console, a Subnet Group is formed. There should be at least one subnet in each subnet group. The Subnet Group is used by Amazon ElastiCache to choose a subnet. The Node Endpoints are next connected to the IP Addresses from the chosen subnet. In addition, nodes with the aforementioned IP addresses are connected to via Elastic Network Interfaces that Amazon ElastiCache builds.

Because the underlying IP addresses for your nodes might vary, Amazon highly advises using the DNS Names to connect to them (e.g., after cache node replacement).


AWS SageMaker Interview Questions and Answers

AWS DynamoDB Interview Questions and Answers

 

Ques: 7). When does the contract for a Reserved Node start if I sign up for one? What occurs to my node at the conclusion of the term?

Answer:

When your request is accepted, the pricing adjustments related to a Reserved Node are triggered while the payment authorization is being handled. On the AWS Account Activity page or by using the DescribeReservedCacheNodes API, you may monitor the progress of your reservation. The discounted pricing will not apply if the one-time payment cannot be authorised by the end of the subsequent billing cycle.

Your Reserved Node will go back to the appropriate On-Demand hourly use charge for your node class and location after your reservation period expires.


AWS Cloudwatch interview Questions and Answers

AWS Elastic Block Store (EBS) Interview Questions and Answers

 

Ques: 8). How do I pick my Cluster's configuration settings correctly?

Answer:

By default, Amazon ElastiCache selects the cluster's ideal configuration settings based on the Node Type's memory and compute resource availability. However, you can modify them if necessary by utilising our configuration management APIs. Please be aware that altering configuration settings from suggested values might result in unanticipated consequences such as performance degradation or system failures and should only be done by experienced users who are willing to take these risks.


AWS Amplify Interview Questions and Answers

AWS Secrets Manager Interview Questions and Answers

 

Ques: 9). Today, I employ Memcached. Why should I switch to Amazon ElastiCache?

Answer:

Memcached and Amazon ElastiCache both adhere to the same protocol. As a result, you may utilise common Memcached operations like get, set, incr, and decr precisely as you would in your current Memcached installations. The text and binary protocols may both be used with Amazon ElastiCache. Additionally, it supports the most of the common statistic results, which are also available via CloudWatch as graphs. Because the libraries you use will still function, you may switch to utilising Amazon ElastiCache without recompiling or re-linking your apps. You only need to edit your application's Memcached configuration file to include the endpoints of the servers (nodes) we supply for you in order to setup the cache servers your application visits. To retrieve a list of the endpoints, you can just use the "DescribeCacheClusters" API or the "Copy Node Endpoints" option on the AWS Management Console. Before completing the switchover from your current solution, Amazon advises extensive testing of your new Amazon ElastiCache setup, as with any migration procedure.


AWS Django Interview Questions and Answers

AWS Cloud Support Engineer Interview Question and Answers

 

Ques: 10). A cluster may potentially cover more than one Availability Zone, is it true?

Answer:

Yes. You can select the availability zones for the new nodes while building a cluster or adding nodes to an existing cluster. Either choose "spread nodes across zones" or enter the desired number of nodes in each availability zone. Nodes can only be deployed in availability zones that are a part of the chosen cache subnet group if the cluster is in a VPC.


AWS Solution Architect Interview Questions and Answers

AWS Glue Interview Questions and Answers

 

Ques: 11). How do other Amazon Web Services and Amazon ElastiCache interact?

Answer:

As a front-end for Amazon Web Services like Amazon RDS and Amazon DynamoDB, Amazon ElastiCache is perfectly suited since it offers exceptionally low latency for high speed applications and offloads some of the request traffic while these services guarantee long-lasting data durability. Along with Amazon EC2 and EMR, the service may also be leveraged to enhance application performance.

 

AWS Cloud Interview Questions and Answers

AWS VPC Interview Questions and Answers         

 

Ques: 12). What are the steps for utilising Auto Discovery?

Answer:

Click the "Download ElastiCache Cluster Client" link on the Amazon ElastiCache interface to begin downloading the Amazon ElastiCache Cluster Client. You need an Amazon ElastiCache account before you can download; if you don't currently have one, you may create one from the Amazon ElastiCache information page. By going to the Amazon ElastiCache console after downloading the client, you can start configuring and activating your Amazon ElastiCache cluster.

 

AWS DevOps Cloud Interview Questions and Answers

AWS Aurora Interview Questions and Answers

 

Ques: 13). How can I tell my cluster to run the supported version of Memcached?

Answer:

When constructing a new cluster, you can choose any minor or major version that is currently supported. Using the "Modify" option for your cluster, you can start an upgrade to a supported engine version release. Simply enter the desired version into the "Cache Engine Version" column. If the "Applied Immediately" option is selected, the update will then be carried out on your behalf either right away or during the subsequent cluster maintenance session.


AWS Database Interview Questions and Answers

AWS ActiveMQ Interview Questions and Answers

 

Ques: 14). How can in-memory caching benefit my applications?

Answer:

With the help of Amazon ElastiCache's in-memory caching, many read-heavy application workloads (including social networking, gaming, media sharing, and Q&A portals) or compute-intensive workloads can experience a considerable reduction in latency and throughput (such as a recommendation engine). By keeping important data in memory for quick access, in-memory caching enhances application performance. The outcomes of computation- or I/O-intensive calculations as well as the results of database queries may both be included in cached data.

 

AWS CloudFormation Interview Questions and Answers

AWS GuardDuty Questions and Answers

 

Ques: 15). How can I build a cluster?

Answer:

Using the AWS Management Console, Amazon ElastiCache APIs, or Command Line Tools, cluster creation is straightforward. Click the "Create" button in the "Memcached" or "Redis" tab of the AWS Management Console to start a cluster. To build a cluster with the required amount of RAM, you only need to give your Cluster Identifier, Node Type, and Number of Nodes. As an alternative, you may build your cluster using the elasticache-create-cache-cluster command or the CreateCacheCluster API. When you create a cluster, AWS will automatically deploy it in an Availability Zone depending on your memory needs and available capacity if you do not select one.

 

AWS Control Tower Interview Questions and Answers

AWS Lake Formation Interview Questions and Answers

 

Ques: 16). When utilising VPC is not an option, How does the Cache Security Groups in Amazon ElastiCache let you manage access to your clusters?

Answer:

A Security Group controls network access to your cluster similarly to a firewall. Your clusters' network access is disabled by default. You must explicitly permit access from hosts in particular EC2 security groups if you want your apps to be able to access your cluster. Ingress is the name of this procedure.

Create a Security Group and link it to the required EC2 security groups (which in turn define the EC2 instances authorised) to grant network access to your cluster. When creating your cluster, the Security Group can be linked to it, or you can do it later by selecting "Modify" from the AWS Management Console.

 

AWS Data Pipeline Interview Questions and Answers

Amazon CloudSearch Interview Questions and Answers 

 

Ques: 17). With Amazon ElastiCache for Memcached, what can I cache?

Answer:

Using the service, you can cache a wide range of objects, including transient session data that might not need a persistent backing store, dynamically generated web pages (using, for instance, Nginx), and content in persistent data stores (like Amazon RDS, DynamoDB, or self-managed databases hosted on EC2). Additionally, you may use it to install admission control in high traffic online applications by implementing high-frequency counters.

 

AWS Transit Gateway Interview Questions and Answers

Amazon Detective Interview Questions and Answers

 

Ques: 18). How do I control network access to my cluster?

Answer:

In non-VPC installations, Amazon ElastiCache enables you to manage access to your cluster and, therefore, the nodes, using Security Groups. A Security Group controls network access to your node similarly to a firewall. Your nodes' network access is disabled by default. You may configure your Security Group to permit access from EC2 Instances with a certain EC2 Security Group membership or IP ranges if you want your apps to have access to your node. Ingress is the name of this procedure. All nodes included in a Security Group must abide by the same rules once ingress has been set for that Security Group. The "Security Groups" section of the Amazon ElastiCache Console or the Amazon ElastiCache APIs may be used to configure security groups.

 

Amazon EMR Interview Questions and Answers

Amazon OpenSearch Interview Questions and Answers

 

Ques: 19). How will I be charged and billed for my use of Amazon ElastiCache?

Answer:

There is no minimum charge; you simply pay for what you really use. For each Node Type, pricing is based on utilised Node-hours. Node-hours that are utilised in part are invoiced as full hours. Within the same Availability Zone, there are no fees associated with data transmission between Amazon EC2 and Amazon ElastiCache. You are only billed for data transfers into or out of the Amazon EC2 instance, even if regular Amazon EC2 Regional Data Transfer fees apply when moving data between an Amazon EC2 instance and an Amazon ElastiCache Node in different Availability Zones of the same Region. For traffic entering or leaving the Amazon ElastiCache Node itself, there is no Amazon ElastiCache Data Transfer fee. For data transported outside of an area, standard data transfer rates apply.

 

AWS FinSpace Interview Questions and Answers

AWS MSK Interview Questions and Answers

 

Ques: 20). Which well-known Memcached libraries work with Amazon ElastiCache?

Answer:

LibMemcached (C) and libraries based on it (e.g. PHP, Perl, Python), spyMemcached (Java), and fauna are some examples of existing Memcached client libraries that function with Amazon ElastiCache without the need to recompile or re-link applications (Memcached 1.4.5 and later) (Ruby).

 

 

More on AWS:

 

AWS EventBridge Interview Questions and Answers

AWS Simple Notification Service (SNS) Interview Questions and Answers

AWS QuickSight Interview Questions and Answers

AWS SQS Interview Questions and Answers

AWS AppFlow Interview Questions and Answers

AWS QLDB Interview Questions and Answers

AWS STEP Functions Interview Questions and Answers

Amazon Managed Blockchain Questions and Answers

AWS Message Queue(MQ) Interview Questions and Answers

AWS Serverless Application Model(SAM) Interview Questions and Answers

 AWS X-Ray Interview Questions and Answers

AWS Wavelength Interview Questions and Answers

AWS Outposts Interview Questions and Answers

AWS Lightsail Questions and Answers

AWS Keyspaces Interview Questions and Answers