AWS Developer Interview Questions and Answers for Freshers

Slaves and masters are used in distributed systems for load balancing and fault tolerance.

• In a distributed system, the master node controls and coordinates the work of the slave nodes.

• Slaves perform tasks assigned by the master and report back their results.

• Masters can be used for load balancing, where they distribute tasks evenly among slaves.

• Masters can also be used for fault tolerance, where they can detect when a slave node fails and reassign its tasks to other slaves.

• Exa...read more

VPC stands for Virtual Private Cloud, a virtual network dedicated to an AWS account. SCERIOUS is not a recognized term in AWS.

• VPC is used to create isolated virtual networks within AWS

• It allows users to define their own IP address range, subnets, and route tables

• VPC provides control over network traffic, security, and connectivity options

Cloud computing models include SaaS, PaaS, and IaaS.

• Software as a Service (SaaS) - applications hosted on cloud and accessed via web browser (e.g. Gmail)

• Platform as a Service (PaaS) - platform and tools provided to develop, test, and deploy applications (e.g. AWS Elastic Beanstalk)

• Infrastructure as a Service (IaaS) - virtualized computing resources like servers, storage, and networking (e.g. AWS EC2)

AWS (Amazon Web Services) is a cloud computing platform that offers a wide range of services for businesses and individuals.

• Provides services such as computing power, storage, databases, machine learning, and more

• Allows users to scale resources up or down based on demand

• Offers a pay-as-you-go pricing model

• Popular services include EC2 (Elastic Compute Cloud), S3 (Simple Storage Service), and RDS (Relational Database Service)

Bound refers to a variable that is assigned to a specific value, while unbound refers to a variable that has not yet been assigned a value.

• Bound variables have a specific value assigned to them, while unbound variables do not.

• Bound variables are used in programming to store and manipulate data, while unbound variables are used to represent unknown values.

• Examples of bound variables include constants and variables that have been initialized with a value, while examples of unbo...read more

AWS is a cloud computing platform that provides a wide range of services for building and deploying applications.

• AWS offers services such as compute, storage, databases, and more

• It allows users to easily scale their applications and pay only for what they use

• Brefi is a serverless PHP runtime for AWS Lambda

S3 bucket names are globally unique.

• S3 bucket names must be unique across all AWS accounts.

• Bucket names can contain lowercase letters, numbers, and hyphens.

• Bucket names cannot contain underscores, uppercase letters, or periods.

• Example of a valid bucket name: my-bucket-123

• Example of an invalid bucket name: My_Bucket