2. Web server Technology

Question 1

What is a web browser?

Answer 1

The software makes it possible to send requests to servers and view HTML documents.

Question 2

What are the most popular web browsers currently?

Answer 2

Google Chrome, Safari, Edge

Question 3

What is a web server?

Answer 3

It is a program or machine that responds to requests from clients usually browsers.

Question 4

What are the most popular web server programs currently?

Answer 4

• Nginx
• Apache
• Cloudflare

Question 5

What are some functions of a client?

Answer 5

• They send requests to servers
• The display the result of requests to users

Question 6

What does CGI stand for?

Answer 6

Common Gateway Interface

Question 7

What are the steps to accessing a database from a web page?

Answer 7

• A user submits a form or clicks on a URL on a web page
• The browser sends a request to the web server that passes it on to a CGI script
• The CGI Script Loads a library that allows it to talk, and send database commands to a database server
• The database server then executes the commands and sends the results to the CGI script
• From the response the CGI script generates an HTML page, that gets sent to the web server, which the sends it to the client.

Question 8

What features do all servers have in common?

Answer 8

The use of HTTP, and Logging

Question 9

What is Loggin?

Answer 9

Keeping a history of client requests and server responses in files, called log files.

Question 10

What are the two roles of a web server?

Answer 10

• Executing Server side code
• Responding to client requests