National Open University Exam Past Question – CIT 722 OCTOBER/NOVEMBER 2014 EXAMINATION

NATIONAL OPEN UNIVERSITY OF NIGERIA CIT 722 Computer Networks

14-16 AHMADU BELLO WAY, VICTORIA ISLAND LAGOS SCHOOL OF SCIENCE AND TECHNOLOGY OCTOBER/NOVEMBER 2014 EXAMINATION

COURSE CODE: CIT 722

COURSE TITLE: Computer Networks

TIME ALLOWED: 3 Hours

INSTRUCTION: Answer any five (5) questions.

1a.        List the geometric representations of computer networks, and explain any three taking into considerations the merits and demerits of each?                                                                        10 marks

4a.        In considering a computer network there are key issues that should be considered, list and explain five of these issues.                                                                                                              10 marks

4c.         What is addressing designed to achieve?                                                                       4 marks

5a.        list five characteristics of a file server?                                                                    10 marks

5b.        What is a file server?                                                                                                4 marks

6a.    List five types of standard protocols explain stating the advantages and disadvantages. 10 marks

6b.    List four basic properties of protocols                                                                                 4 marks

7. Briefly discuss four different types of networking / internetworking devices                   14 marks