DIT407  NETWORK DESIGN AND SETUP.

UNIVERSITY EXAMINATIONS: 2016/2017
EXAMINATION FOR THE DIPLOMA IN INFORMATION
TECHNOLOGY
DIT407 NETWORK DESIGN AND SETUP
DATE: AUGUST, 2017 TIME: 2 HOURS
INSTRUCTIONS: Answer Question One & ANY OTHER TWO questions.

QUESTION ONE [30 MARKS] – COMPULSORY
a) Define the following terminologies [6 Marks]
i. FDDI
ii. CSMA/CA
iii. 100BASET
iv. NODE
v. MEDIUM
vi. SEGMENT
b) Describe any five factors to consider when buying a network operating system
[5 Marks]
c) (i) State four reasons why Ethernet has become the dominant LAN technology.
[4 Marks]
(ii) Explain why Ethernet is considered scalable [1 Mark]
d) State and explain THREE switching techniques. [3 Marks]
e) Describe the CSMA/CD access method. [5 Marks]
f) Discuss any FOUR duties of a network administrator [4 Marks]
g) Discuss the differences between FDM and TDM multiplexing methods? [2 Marks]
QUESTION TWO
a) Describe the steps of LAN design in detail (6 Marks)
b) Differentiate between simplex ,half duplex and full duplex in the context of data
transmission (3 Marks)
c) Differentiate between Enterprise and workgroup server (2 Marks)
d) Highlight FIVE benefits of computer networks to an organization (5 Marks)
e) Explain the steps involved when a host obtains an IP address from DHCP server
(4 Marks)
QUESTION THREE
a) Define the following terms (4 Marks)
i. Topology
ii. Internetworking
iii. Monitoring
iv. Throughput
b) Describe the function of the following network troubleshooting commands (6 Marks)
i. Ping
ii. Tracert
iii. Ipconfig
c) Differentiate between static and dynamic IP allocation techniques (4 Marks)
d) Give THREE reasons why you would select a Unix Bases Server OS over a Windows Server
OS for Network Administration. (3 Marks)
e) Describe the procedure of building a simple network between two computers directly without
using a switch or hub (3 Marks)
QUESTION FOUR
a) Discuss any FOUR building blocks of a computer network? [4 Marks]
b) What are primary the functions of the NIC? [4 Marks]
c) Discuss TWO disadvantages of fiber optic cable [2 Marks]
d) What are the factors to consider when choosing a transmission medium? [4 Marks]
f) Differentiate between the client server and the Peer to Peer network architecture
[4 Marks]
f) Differentiate between the following stating their functions in a network [2 Marks]
i. HCC and VCC
ii. MDF and IDF
QUESTION FIVE
a) Given the network address 192.168.0.0/26, answer the following questions.
i. How many subnets does the chosen subnet mask produce? (2 Marks)
ii. How many valid hosts per subnet are available? (2 Marks)
iii. What are the valid subnets? (2 Marks)
iv. What are the broadcast addresses of each subnet? (2 Marks)
v. What are the valid hosts in each subnet? (2 Marks)
b) Discuss THREE categories of networks classified by Range [6 Marks]
c) Explain the following security threats and how they compromise a Network.
[4 Marks]
i. Trojan Horses
ii. Spy-ware
iii. Denial Of Service Attack
iv. Zero Day / Zero Hour Attack

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