4 (a) What are the five layers in the Internet protocol stack? What are the

principal responsibilities of each of these layers?

(10 marks)

(b) Describe briefly the chain of events that occur when Alice types the

URL for www.google.com into her web browser and that will eventually

result in Google’s home page being displayed. Your answer should

concentrate on the protocols that are used prior to the sending of the

HTTP GET message to www.google.com.

(6 marks)

© With reference to the following Telnet session transcript give an

explanation of the HTTP protocol:

$ telnet www.cis.strath.ac.uk 80

Trying 130.159.196.40...

Connected to www.cis.strath.ac.uk.

Escape character is '^]'.

GET / HTTP/1.1

Host: www.cis.strath.ac.uk

HTTP/1.1 302 Found

Date: Wed, 07 Apr 2010 10:36:48 GMT

Server: Apache

Location: http://www.strath.ac.uk/cis/

Content-Length: 282

Content-Type: text/html; charset=iso-8859-1

…

(4 marks)

I think I could solve this despite not being a compsci anymore.

Show some work for Pete's sake.

If i knew the answer would i be posting them here? If you cant help don't bother replying, and don't lie about being a computer science student

I like your attitude. It's sure to get you a lot of help with this. However, this is "homework help", not "we'll do your homework for you". Show us that you've actually attempted to solve any of these and not just want the answers served on a platter.