Introduction to Load Balancing Quiz

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Questions and Answers

What is the main goal of load balancing?

To maximize the throughput of a single server by overloading it with incoming requests

To limit the scalability and redundancy of the system

To create a single point of failure for the server pool or server farm

To ensure high availability, reliability, and performance by distributing incoming requests and traffic evenly across multiple servers (correct)

Where does a load balancer typically sit in the network architecture?

Within the internal platform layer

Between the web servers and the database

At the edge of the network

Between the client and the server (correct)

What is the purpose of adding load balancers at multiple layers of the system?

To decrease the overall application availability and responsiveness

To utilize full scalability and redundancy (correct)

To increase the load on individual servers

To create a single point of failure at each layer

What are backend servers in the context of load balancing?

The servers that receive and process requests forwarded by the load balancer Signup and view all the answers

Which of the following is NOT a key goal of load balancing?

Creating a single point of failure for the system Signup and view all the answers

What does a load balancer do to reduce the load on individual servers?

Distributes incoming network and application traffic across multiple backend servers Signup and view all the answers

What is the role of a load balancer in improving overall application availability and responsiveness?

Prevents any one server from becoming a single point of failure Signup and view all the answers

What is the purpose of SSL/TLS termination in load balancing?

To decrypt SSL/TLS-encrypted traffic at the load balancer level Signup and view all the answers

What is the purpose of health checks in load balancing?

To determine the availability and performance of backend servers Signup and view all the answers

What does session persistence in load balancing aim to achieve?

Ensure that subsequent requests from the same client are directed to the same backend server Signup and view all the answers

What factors does a load balancer's predefined algorithm take into account when determining which server or resource should handle an incoming request?

Server capacity, server response time, number of active connections, and geographic location Signup and view all the answers

How do load balancers work to distribute incoming network traffic?

By distributing incoming network traffic across multiple servers or resources Signup and view all the answers

What happens when a server is determined to be unhealthy during a health check?

It is removed from the server pool until it recovers Signup and view all the answers

What is the primary role of a load balancer in handling incoming requests?

To determine which server or resource should handle the request Signup and view all the answers

What is the purpose of distributing incoming traffic among backend servers in load balancing?

To ensure efficient utilization of computing resources and prevent overload Signup and view all the answers

Study Notes

Load Balancing Basics

The main goal of load balancing is to distribute incoming network traffic efficiently across multiple backend servers to improve responsiveness, reliability, and scalability of applications.

Load Balancer Positioning

A load balancer typically sits between the client and the server farm, receiving incoming requests and directing them to available backend servers.

Multi-Layer Load Balancing

Adding load balancers at multiple layers of the system enables scalable and flexible distribution of incoming traffic and improves overall system resilience.

Backend Servers

Backend servers are the servers that host applications or services and process incoming requests, providing the actual content or functionality to clients.

Non-Goal of Load Balancing

Load balancing is not intended to improve the performance of individual servers, but rather to distribute workload efficiently across multiple servers.

Load Reduction

A load balancer reduces the load on individual servers by spreading incoming requests across multiple servers, preventing overload and improving responsiveness.

Application Availability and Responsiveness

Load balancers improve overall application availability and responsiveness by efficiently distributing incoming traffic and providing automatic failover to available servers in case of failures.

SSL/TLS Termination

The purpose of SSL/TLS termination in load balancing is to offload encryption and decryption tasks from backend servers, reducing their workload and improving performance.

Health Checks

Health checks are used to monitor backend server health, enabling load balancers to detect and redirect traffic away from unhealthy servers, ensuring high availability and responsiveness.

Session Persistence

Session persistence in load balancing aims to direct incoming requests from a client to the same backend server that handled previous requests from the same client, ensuring session continuity and consistency.

Load Balancer Algorithms

A load balancer's predefined algorithm takes into account factors such as server availability, response time, geographic location, and client IP addresses when determining which server or resource should handle an incoming request.

Load Balancing Traffic Distribution

Load balancers distribute incoming network traffic by directing requests to available backend servers using various algorithms, ensuring efficient and scalable traffic management.

Unhealthy Server Handling

When a server is determined to be unhealthy during a health check, the load balancer redirects incoming traffic to available healthy servers, ensuring minimal disruption to clients.

Load Balancer Role

The primary role of a load balancer in handling incoming requests is to direct them to available backend servers while ensuring efficient traffic distribution, scalability, and high application availability.

Backend Server Traffic Distribution

The purpose of distributing incoming traffic among backend servers in load balancing is to improve responsiveness, reliability, and scalability of applications by ensuring no single server becomes overwhelmed.

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Description

Test your knowledge of load balancing with this introductory quiz! Explore the importance of evenly distributing traffic across servers to enhance performance and reliability in system design.