Answer:- An Amazon EMR stands for Amazon Elastic MapReduce. It is a web service used to process the large amounts of data in a cost-effective manner. The central component of an Amazon EMR is a cluster. Each cluster is a collection of EC2 instances and an instance in a cluster is known as node. Each node has a specified role attached to it known as a node type, and an Amazon EMR installs the software components on node type.

Answer:- You cannot connect the EBS volume to multiple instances. But, you can connect multiple EBS volumes to a single instance.

Answer:- Lifecycle hooks perform custom actions by pausing instances when Autoscaling group launches or terminates an instance. When instance is paused, an instance moves in a wait state. By default, an instance remains in a wait state for 1 hour. For example, when you launch a new instance, lifecycle hooks pauses an instance. When you pause an instance, you can install a software on it or make sure that an instance is completely ready to receive the traffic.

Answer:- An Amazon Kinesis Firehose is a web service used to deliver real-time streaming data to destinations such as Amazon Simple Storage Service, Amazon Redshift, etc.

Answer:- An Amazon Transfer Acceleration Service is a service that enables fast and secure transfer of data between your client and S3 bucket.

Answer:- EBS stands for Elastic Block Store. It is a virtual disk in a cloud that creates the storage volume and attach it to the EC2 instances. It can run the databases as well as can store the files. All the files that it store can be mounted as a file system which can be accessed directly.

Answer:- Vertical scaling means scaling the compute power such as CPU, RAM to your existing machine while horizontal scaling means adding more machines to your server or database. Horizontal scaling means increasing the number of nodes, and distributing the tasks among different nodes.

Answer:- CSS stands for Cascading Style Sheet. It is a popular styling language which is used with HTML to design websites. It can also be used with any XML documents including plain XML, SVG, and XUL.

Answer:- SGML (Standard Generalized Markup Language) is the origin of CSS. It is a language that defines markup languages.

Answer:- Following are the different variations of CSS: - CSS1 - CSS2 - CSS2.1 - CSS3 - CSS4

Answer:- There are three methods to integrate CSS on web pages. - Inline method - It is used to insert style sheets in HTML document - Embedded/Internal method - It is used to add a unique style to a single document - Linked/Imported/External method - It is used when you want to make changes on multiple pages.

Answer:- - Bandwidth - Site-wide consistency - Page reformatting - Accessibility - Content separated from presentation

Answer:- - Ascending by selectors is not possible - Limitations of vertical control - No expressions - No column declaration - Pseudo-class not controlled by dynamic behavior - Rules, styles, targeting specific text not possible

Answer:- CSS frameworks are the preplanned libraries which make easy and more standard compliant web page styling. The frequently used CSS frameworks are: - - Bootstrap - Foundation - Semantic UI - Gumby - Ulkit