Intro to Internet Computing

Question 1

What is internet computing?

Answer 1

An architecture that supports all information flows and processes over the Internet

Question 2

When was the first documented version of the HTTP protocol introduced and what was it called?

Answer 2

HTTP 0.9 introduced in 1991

Question 3

When was HTTP 1.0 introduced?

Answer 3

1996

Question 4

When was HTTP 1.1 introduced?

Answer 4

1997

Question 5

When was HTTP 2.0 introduced?

Answer 5

2015

Question 6

What layer protocol is HTTP?

Answer 6

It is an application layer protocol

Question 7

What is the process of the request/response cycle?

Answer 7

1. You enter a URL into the address bar
2. Your browser looks up the IP address for that URL
3. Your browser issues a request for the home page at that URL
4. The request crosses the internet and arrives at the server for the website
5. The web server looks for the web page on its hard disk
6. The web page is retrieved by the server and returned to the browser
7. The browser displays the webpage

Question 8

What does PHP stand for?

Answer 8

PHP: Hypertext Preprocessor

Question 9

What can PHP do?

Answer 9

1. Can generate dynamic page content
2. Can create, open, read, write, delete, and close files on the server
3. Can collect form data
4. Can send and receive cookies
5. Can add, delete, and modify data in a database
6. Can be used to control user-access
7. Can encrypt data

Question 10

What are the symbols that open and close a PHP script?

Answer 10

Open: <?
Close: ?>

Question 11

What are the rules surrounding case sensitivity in PHP?

Answer 11

Keywords are not case sensitive so you could spell the “echo” command as “EcHo” and it would do the same thing.

Variable names are case sensitive

Question 12

What is the symbol that denotes a variable in PHP?

Answer 12

$

Question 13

What are the possible symbols used to make a comment in PHP code?

Answer 13

// or # for single line comments

/* … */ for multi-line comments