User Agent / Server / CGI

Question 1

What is an User Agent?

Answer 1

A software that acts on behalf of the user.

Question 2

What three roles does an User Agent have?

Answer 2

1. Fetches the data
2. Interprets the data
3. Does something with the data (present it to the user and stores it)

Question 3

What are examples of User Agents?

Answer 3

• Browsers (Safari, Crome)
• Mail User Agent, Email Clients (Outlook)
• Instant Messenger Clients (Messenger, WhatsApp)
• OS updater

Question 4

What are NginX?

Answer 4

A type of server

Question 5

What does the HTTP server do different in a static vs dynamic server?

Answer 5

Static: HTTP server serves files from disk.

Dynamic: HTTP server serves the output of a separate program.