Top 10 AWS Interview QA

1. What is the role of AWS Application Discovery Service ?

Ans: AWS Application Discovery Service helps you plan your migration to the AWS cloud by collecting usage and configuration data about your on-premises servers. Application Discovery Service is integrated with AWS Migration Hub, which simplifies your migration tracking as it aggregates your migration status information into a single console.

2. What is AWS Database Migration Service ?

Ans: AWS Database Migration Service (AWS DMS) is a cloud service that makes it easy to migrate relational databases, data warehouses, NoSQL databases, and other types of data stores. You can use AWS DMS to migrate your data into the AWS Cloud, between on-premises instances (through an AWS Cloud setup), or between combinations of cloud and on-premises setups.

3. What is AWS DataSync ?

Ans: AWS DataSync is a data transfer service that simplifies, automates, and accelerates moving and replicating data between on-premises storage systems and AWS storage services over the internet or AWS Direct Connect. As a fully managed service, DataSync removes the need to modify applications, develop scripts, or manage infrastructure.

4. What are the main use cases for AWS DataSync ?

Ans: These are some of the main use cases for AWS DataSync:

• Data migration – move active data sets rapidly over the network into Amazon S3 or Amazon EFS. DataSync includes automatic encryption and data integrity validation to make sure your data arrives securely, intact, and ready to use.
• Data movement for timely in-cloud processing – move data into or out of AWS for processing when working with systems that generate data on-premises. This approach speeds up critical hybrid cloud workflows across many industries. These include video production in media and entertainment, seismic research in oil and gas, machine learning in life science, and big data analytics in finance.
• Data protection – replicate and backup data to Amazon S3 for online copies that can be archived to Amazon S3 Glacier or sent to Amazon EFS for a standby file system. DataSync transfer tasks are always incremental and only transfer data that has changed.

Using AWS DataSync provides the following benefits:

• Simplify and automate data movement.

Note: Transfer data fast over the network into AWS, at a rate up to 10 Gbps.

Reduce data transfer costs and move data cost-effectively with the flat, per-gigabyte pricing in DataSync.

5. What AWS Migration hub provides ?

Ans: AWS Migration Hub provides a single place to discover your existing servers, plan migrations, and track the status of each application migration. The AWS Migration Hub provides visibility into your application portfolio and streamlines planning and tracking. You can see the status of the servers and databases that make up each of the applications you are migrating, regardless of which migration tool you are using.

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6. What is the use of AWS Schema Conversion Tool ?

Ans: You can use the AWS Schema Conversion Tool (AWS SCT) to convert your existing database schema from one database engine to another. You can convert relational OLTP schema, or data warehouse schema. Your converted schema is suitable for an Amazon Relational Database Service (Amazon RDS) MySQL DB instance, an Amazon Aurora DB cluster, an Amazon RDS PostgreSQL DB instance, or an Amazon Redshift cluster.

7. What AWS Server Migration automates ?

Ans: AWS Server Migration Service automates the migration of your on-premises VMware vSphere, Microsoft Hyper-V/SCVMM, and Azure virtual machines to the AWS Cloud. AWS SMS incrementally replicates your server VMs as cloud-hosted Amazon Machine Images (AMIs) ready for deployment on Amazon EC2.

8. What is the use of AWS Snowball service ?

Ans: The AWS Snowball service uses physical storage devices to transfer large amounts of data between Amazon Simple Storage Service (Amazon S3) and your onsite data storage location at faster-than-internet speeds. By working with AWS Snowball, you can save time and money. Snowball provides powerful interfaces that you can use to create jobs, track data, and track the status of your jobs through to completion.

Note: Snowball uses the AWS Snowball Management Console and the job management API for creating and managing jobs. To perform data transfers on the Snowball device locally, use the Snowball client or the Amazon S3 Adapter for Snowball.

10. What is AWS SFTP ?

Ans: AWS Transfer for SFTP (AWS SFTP) is a fully managed AWS service that enables you to transfer files over Secure File Transfer Protocol (SFTP), into and out of Amazon Simple Storage Service (Amazon S3) storage. SFTP is also known as Secure Shell (SSH) File Transfer Protocol. SFTP is used in data exchange workflows across different industries such as financial services, healthcare, advertising, and retail, among others.

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