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NATIONAL OPEN UNIVERSITY OF NIGERIA
UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
OCTOBER 2016 EXAMINATION
COURSE CODE: CIT 305
COURSE TITLE: Networking and Communication Technology
DURATION: 3 Hours
INSTRUCTIONS: Answer any four questions.
Q1a. Define Computer Network 3 marks
Q1b. State and explain briefly the four (4) uses of computer networks 12 marks
Q1c. Write full meaning of the following acronyms:
i. LMR ii. ATM iii. WAN iv. GMRS v. MAN 2½ marks
Q2a. Briefly explain:
- GSM modem 3½ marks
ii. Wi-Fi
iii. Protocol
Q2b. Mention and explain 2 types of wireless technologies 6 marks
Q3a. What is DSL? 8½ marks
Q3b. List five benefits of DLS 5 marks
Q3c. Mention three features of DLS 4 marks
Q4a. Define Enterprise Networks 8½ marks
Q4b. Differentiate between LAN and WAN 9 marks
Q5a. Explain the following terms:
- SONETS 5½ marks
- A Modem 5 marks
- Packet switching 5 marks
Q5b. List two methods of packet switching 2 marks
Q6a. Define a video-conference 4½ marks
Q6b. State the sixues of video-conference 5 marks
Q6c. What are the differences between digital and analog signal? 8 marks
