Cloud Technology

Which AWS service allows you to run code without provisioning or managing servers?

• AAmazon EC2
• BAWS Lambda✓
• CAmazon ECS
• DAWS Elastic Beanstalk

Answer: AWS Lambda is a serverless compute service that runs your code in response to events without requiring you to provision or manage servers, charging only for actual compute time consumed.

What is Amazon VPC?

• AA service for monitoring AWS resource performance
• BA logically isolated section of the AWS Cloud where you can launch resources in a virtual network you define✓
• CA content delivery service for static assets
• DA managed container orchestration service

Answer: Amazon Virtual Private Cloud (VPC) lets you provision a logically isolated section of the AWS Cloud with your own virtual network, including IP address ranges, subnets, route tables, and network gateways.

What is Amazon CloudFront?

• AA DNS and domain registration service
• BA content delivery network (CDN) that securely delivers data with low latency✓
• CA virtual private network service
• DA load balancing service for EC2 instances

Answer: Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency and high transfer speeds.

Which AWS service provides scalable Domain Name System (DNS) web service?

• AAmazon CloudFront
• BAWS Direct Connect
• CAmazon Route 53✓
• DAWS Global Accelerator

Answer: Amazon Route 53 is a scalable and highly available Domain Name System (DNS) web service that translates domain names into IP addresses and routes users to internet applications.

What is Auto Scaling in AWS?

• AAutomatically upgrading EC2 instance types based on performance
• BAutomatically adjusting the number of EC2 instances in response to changing demand✓
• CAutomatically backing up data to S3
• DAutomatically patching operating systems on EC2 instances

Answer: AWS Auto Scaling monitors your applications and automatically adjusts capacity to maintain steady, predictable performance at the lowest possible cost, scaling EC2 instances up or down based on defined policies.

Which service provides a managed Kubernetes container orchestration on AWS?

• AAmazon ECS
• BAWS Fargate
• CAmazon EKS✓
• DAWS Lambda

Answer: Amazon Elastic Kubernetes Service (EKS) is a managed Kubernetes service that makes it easy to run Kubernetes on AWS without needing to install and operate your own Kubernetes control plane.

What is AWS Fargate?

• AA DNS routing service
• BA serverless compute engine for containers that removes the need to manage servers✓
• CA container image registry service
• DA monitoring service for containerized applications

Answer: AWS Fargate is a serverless compute engine for containers that works with both Amazon ECS and EKS, removing the need to provision and manage servers so you can focus on building applications.

What is AWS Elastic Load Balancing (ELB)?

• AA service that automatically scales EC2 instances
• BA service that automatically distributes incoming traffic across multiple targets✓
• CA DNS service that routes traffic geographically
• DA network monitoring service

Answer: Elastic Load Balancing automatically distributes incoming application traffic across multiple targets such as EC2 instances, containers, and IP addresses, improving fault tolerance and availability.

Which type of Elastic Load Balancer operates at the application layer (Layer 7) and supports path-based routing?

• AClassic Load Balancer
• BNetwork Load Balancer
• CApplication Load Balancer✓
• DGateway Load Balancer

Answer: The Application Load Balancer (ALB) operates at Layer 7 (HTTP/HTTPS) and supports advanced request routing based on URL path, host headers, query strings, and HTTP methods.

Which Elastic Load Balancer type is best suited for ultra-high performance and TCP/UDP traffic?

• AApplication Load Balancer
• BClassic Load Balancer
• CGateway Load Balancer
• DNetwork Load Balancer✓

Answer: The Network Load Balancer (NLB) operates at Layer 4 (TCP/UDP) and is designed for extreme performance, capable of handling millions of requests per second with very low latency.

What is Amazon SNS?

• AA service for running serverless functions
• BA fully managed pub/sub messaging service for decoupling microservices✓
• CA managed queue service for storing messages
• DA service for sending emails only

Answer: Amazon Simple Notification Service (SNS) is a fully managed pub/sub messaging service that enables you to decouple microservices, distributed systems, and event-driven serverless applications by pushing messages to subscribers.

What is the difference between Amazon SQS and Amazon SNS?

• ASQS is for real-time streaming; SNS is for batch processing
• BSQS is a message queue for point-to-point messaging; SNS is a pub/sub service for broadcasting to multiple subscribers✓
• CSQS sends emails; SNS sends SMS messages
• DSQS is serverless; SNS requires server management

Answer: SQS is a message queuing service for decoupling point-to-point communication where messages are pulled by consumers, while SNS is a pub/sub service that pushes messages to multiple subscribers simultaneously.