DIT407  NETWORK DESIGN AND SETUP.

UNIVERSITY EXAMINATIONS: 2018/2019
EXAMINATION FOR THE DIPLOMA IN INFORMATION TECHNOLOGY
DIT407 NETWORK DESIGN AND SETUP
DATE: AUGUST 2019 TIME: 2 HOURS
INSTRUCTIONS: Answer Question One & ANY OTHER TWO questions.

QUESTION ONE
a) Describe four factors that should be considered when designing computer networks [4Marks]
b) With the aid of a diagram describe the following network topologies.
i) Star topology [2Marks]
ii) Ring topology [2Marks]
c) Explain four reasons why an organization may decide not to install a computer network
[4Marks]
d) Differentiate between the two types of UNIX network operating systems [4Marks]
e) Explain four problems that are likely to be faced by network experts when diagnosing network
operations. [4Marks]
f) State four goals of network management [4Marks]
g) State three differences between data and voice communication [6Marks]
QUESTION TWO
a) The network requirements translate into four fundamental network design goals. Explain the four goals.
[8Marks]
b) Briefly describe the following types of computer networks
i) Local area network
ii) Metropolitan area network
iii) Personal area network [6Marks]
c) Network connectivity problems occur when end stations cannot communicate with other areas of your
local area network (LAN) or wide area network (WAN). Explain any three network connectivity
problems [6Marks]
QUESTION THREE
a) Describe the functions of the following networking devices
i) Router
ii) Gateway
iii) Switch [6Marks]
b) By using a strategy for network troubleshooting, a problem can be approached methodically and resolved
with minimal disruption to network users. Describe the following concepts that relate to network
troubleshooting
i) Recognizing symptoms
ii) Understanding the problem
iii) Identifying and testing the cause of the problem
iv) Solving the problem [8Marks]
c) Differentiate between the following with reference to computer networks
i) Peer to peer and client server network architecture
ii) Fiber optic and twisted pair cable [6Marks]
QUESTION FOUR
a) Describe the following threats to computer network security
i) Spoofing
ii) Phishing
iii) Eavesdropping [6Marks]
b) Briefly outline the importance of the following network troubleshooting commands
i) ipconfig
ii) ping
iii) nslookup
iv) tracert (traceroute) [8Marks]
c) i) Define the term network documentation [2Marks]
ii) Outline four guidelines for creating an effective network documentation [4Marks]
QUESTION Five
a) With reference to IPv4 addressing, describe the three commonly used TCP/IP classes [6Marks]
b) Transmission mode refers to the mechanism of transferring data between two devices connected over a
network. Describe the following data transmission modes
i) Simplex mode
ii) Parallel mode
iii) Duplex mode [6Marks]
c) Give the 8 bit binary equivalents of the octets for the IP address 192.168.10.128 [4Marks]
d) Itemise the four types of network adapters [4Marks]

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