How The Web Works (THM).4 Flashcards
Name 3 different algorithms a load balancer runs
Round-robin
weighted
health check
What is a load balancer?
Device which manages the load of high traffic websites and provides a failover for servers
What is a CDN?
Content Delivery Network
What is the purpose of a CDN?
Hosts static files
Redirects requests to the nearest server with those static files to the client
What are static files?
website files such as JS, CSS. Images, Videos, etc
What is a WAF?
Web Application Firewall
What does a WAF do?
Sits between web request and web server
Protects webserver from hacks or denail of service attacks
Audits web requests
Rate limiting
What is rate limiting?
Checks for excessive web requests
Filters and allows only certain amount of requests from an IP per second
If a request is ID as an attack, blacklisted
What is a web server?
Software that manages incoming requests and uses HTTP to deliver websites to clients
What are the most common web servers?
Apache
NodeJS
Nginx
IIS
Where does a web server deliver its files from?
Root directory
What are virtual hosts?
text-based configuration files that provide different websites on the same web server
What is Dynamic content?
Content that can be changed or updated on a web server
