Why load balancing matters in AWS - Quick Recap

Recall & Review

beginner

What is load balancing in cloud infrastructure?

Load balancing is the process of distributing incoming network traffic across multiple servers to ensure no single server is overwhelmed, improving performance and reliability.

beginner

Why does load balancing improve application availability?

Because it spreads traffic across servers, if one server fails, others can handle the load, keeping the application running smoothly without interruption.

intermediate

How does load balancing help with scaling applications?

Load balancing allows adding or removing servers easily to handle more or less traffic, helping applications grow or shrink without downtime.

beginner

What is a real-life example of load balancing?

Imagine a busy restaurant where a host seats guests evenly among several waiters so no waiter is overwhelmed and all guests get good service quickly.

beginner

What AWS service is commonly used for load balancing?

AWS Elastic Load Balancing (ELB) automatically distributes incoming application traffic across multiple targets like EC2 instances.

What is the main purpose of load balancing?

A Create backups automatically

B Store data securely

C Distribute traffic evenly across servers

D Monitor server health only

Load balancing distributes incoming traffic evenly to prevent any server from being overloaded.

How does load balancing improve fault tolerance?

A By routing traffic away from failed servers

B By shutting down servers during peak times

C By increasing server storage capacity

D By encrypting all data

Load balancers detect failed servers and stop sending traffic to them, keeping the system running.

Which AWS service provides load balancing?

A Amazon S3

B Elastic Load Balancer (ELB)

C Amazon RDS

D AWS Lambda

Elastic Load Balancer (ELB) is the AWS service designed for load balancing.

Load balancing helps applications to:

A Scale smoothly with traffic changes

B Reduce data storage costs

C Encrypt user data

D Create user accounts

Load balancing allows applications to handle more or less traffic by distributing requests efficiently.

What happens if there is no load balancing and one server gets too much traffic?

A Traffic will be evenly shared anyway

B The server will automatically upgrade hardware

C The server will send traffic to other servers

D The server may slow down or crash

Without load balancing, a single server can become overwhelmed, causing slowdowns or crashes.

Explain why load balancing is important for cloud applications.

Think about how spreading work helps keep things running smoothly.

Describe how AWS Elastic Load Balancer helps manage traffic.

Focus on how ELB keeps traffic flowing to healthy servers.