Section B [60 marks]
Answer ALL questions.
1.
Generate
the Cyclic Redundancy Check (CRC) codeword for the data bits 1110 1011 0101 and
a pattern 1001010. Obtain the CRC check bits using base 2 method on the sender
side and check if the receiver detects an error. Show your work and clearly
indicate the final codeword.
[15
marks]
2.
You
work for a small bakery company with approximately 200 employees. Scattered
around the company are a number of separate computer workstations/hosts that
perform word processing, spreadsheet operations, market analysis and wireless
access for customers. Your boss has asked you to consider installing some form
of Local Area Network (LAN) and Wireless Local Area Network (WLAN) to support
computer and network operations.
a.
Suggest
and describe a type of Local Area Network (LAN) and Wireless Local Area Network
(WLAN) together with its network topology that is suitable to support the
computer and network operations for the employees and customers. List and
locate the equipments support (hubs, servers) that might need for the network
operations.
[25
marks]
b.
This
small bakery company has a network address of 192.168.4.0/24. It requires a
number of separate networks for its bakery which to be used by its computer
workstations/hosts. List down the network addresses, subnet masks, host
addresses range, number of usable hosts network and broadcast networks. Show
your work and clearly assign the addresses to the related computer
workstations/hosts and network equipments in 2(a).
[20
marks]
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