Answers to the prework web questions.

ns_howwebworks

Norman Schultz

1. Describe, step by step, what happens when I type `www.example.com` into my browser and try to go to the page?

   *a. Your browser attempts to find the DNS record for the website requested. It looks in a variety of caches until it finds the record and obtains the site's IP address.*

   *b. The browser establishes a connection between the site's IP address and yours (handshake).*

   *c. The browser then sends an HTTP request for the page. In this case it's a simple request for the page's index, but other times the request comes with data that might alter both the form and content of the data received.*

   *d. The website's server verifies the request' details and if any cookies are involved and gather a formatted response.*

   *e. The website sends the HTTP response with the appropriate data and formatting.*

   *f. The browser displays the content.*

2. What does HTTP stand for?

   *Hypertext Transfer Protocol - *

3. What protocol does the World Wide Web use?

   *HTTP, HTML, and URL*

4. Each computer on the Internet is assigned an IP address, what does IP stand for?

   *Internet Protocol*

5. What does DNS stand for?

   *A*

- A. Domain Name System
- B. Digital Number System
- C. Domain Number System
- D. Domain Name Service
- E. Digital Name Service

1. How are text domain names matched to their respective numeric IP addresses.

   *Their IP address is looked up by a DNS record stored in multiple places.*

2. What is the client?

   *C is the closest to correct, but it doesn't need to be software it can be a piece of hardware. The source of an internet server request.*

- A. A purchaser
- B. Internet shopping customer (Consumer)
- C. The software which requests information from a server (browser)
- D. The server to which a particular computer sends data
- E. The computer which the IP address belongs to

1. What does URL stand for?

   *Uniform Resource Locator - essentially pointer to a location on the Internet*

2. What are protocols

   *D*

- A. The standardisation of IP addressess
- B. The DNS standard method for data transfer
- C.	The standardised network address system
- D.	The standardised method for transferring data or documents over a network
- E.	The standardised method for prioratising data or document storage over a network

1. What does DNS stand for? *Already answered above*
2. what is the `www` portion of a url? *The protocol identifier. "www" identifies an http website.*
3. What is The markup language used for all web documents? *HTML*
4. What is the organization that monitors web technologies? *World Wide Web Consortium (W3C). Oh, and the NSA. *
5. What is the Protocol for transferring web documents on the Internet? *HTTP*
6. What matches the domain names with numeric IP addresses? *DNS lookup*