The copperbelt university

INSTRUCTIONS

1. 
   Time allowed is three hours (3 hrs)
   
2. 
   Answer any five (5) questions
   
3. 
   There are Seven (7) questions in this paper
   
4. 
   All questions carry equal marks
   
5. 
   Well written work is encouraged
   

1. 
   How is the HTTP protocol different from the TCP/IP protocol? [2 marks]
   
2. 
   What are the main components of URL? Explain them briefly. [2 marks]
   
3. 
   How is WWW different from the Internet? [2 marks]
   
4. 
   State the major functions performed by the presentation layer of the ISO OSI model. [2 marks]
   
5. 
   State the purpose of layering in networks? [2 marks]
   
6. 
   Identify the class and default subnet mask of the IP address 217.65.10.7. [2 marks]
   
7. 
   Group the OSI layers by function. [3 marks]
   
8. 
   Link state Routing algorithm is an alternative form of distributed route computation that uses a version of Dijktra's algorithm instead of a distance-vector algorithm. Explain what this algorithm and further using the diagram below explain how this algorithm functions. [5 marks]
   

1. 
   HTTP is a protocol that is used to access the Web pages from a Web server over the Internet. HTTP allows the user to access hypertext documents on WWW. On the other hand, all computers on the Internet communicate with one another using the Transmission Control Protocol/Internet Protocol suite, abbreviated as TCP/IP, which is the basic communication protocol of the Internet.
   
2. 
   The four components of a URL are as follows: