CIT311 OCTOBER/NOVEMBER 2014 Examination

                                                                 

                                                                 National Open University of Nigeria

                                                            14-16 Ahmadu Bello Way, Victoria Island Lagos 

                                                                        School of science and Technology

                                                                     OCTOBER/NOVEMBER 2014 Examination

COURSE CODE: CIT311

   COURSE TITTLE: COMPUTER NETWORKS

 TIME ALLOWED: 3hrs

    Instructions: ANSWER ANY 4 QUESTIONS 

1a. what is computer network

b. write short note on geographical coverage classification of networks and give one example each

2a. write short note on the goals motivation of computer network

b. Enumerate the three characteristics of LANs that distinguish it from other kinds of network

3a. what is packet switched network 

b. write short note on the two types of network  

4a.what is a digital signal

b. differentiate  between OSI Reference Model & TCP Reference Model

5a. Write short note on IEEE standard 802.4 and Ethernet

b. Write short note on IEEE standard 802.3 and Ethernet

6a. write short note on IEEE standard 802.5 and Ethernet 

6b. differentiate between a continuous and discrete signal


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