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Dbit 103: Computer Operations And Management Question Paper

Dbit 103: Computer Operations And Management

Course:Computer Operations Management

Institution: Kenya Methodist University question papers

Exam Year:2008

KENYA METHODIST UNIVERSITY

END OF SECOND TRIMESTER 2008 EXAMINATIONS

FACULTY : BUSINESS AND MANAGEMENT STUDIES
DEPARTEMENT : BUSINESS ADMINISTRATION
COURSE CODE : DBIT 103
COURSE TITLE : COMPUTER OPERATIONS AND MANAGEMENT
TIME : 2 HOURS

INSTRUCTIONS:
• Answer all Questions in Section A (Compulsory) and any TWO Questions in Section B

SECTION A
Question 1
(a) (i) A computer hardware can logically be configured to have five parts. Name these five parts (5 marks)
(ii) Name the part of the computer used to perform the activities below:
? Contains all the circuitry into which all other sections connect
? Contains sections of running program which is temporarily idle
? Used to transfer data and programs into the hard disk drive and is small and portable
? Used by the operating system to interface every attached peripheral to the CPU
? Used by the operating system to change phone-line signals to computer readable signals and vice versa
? Used to store pre-fetched data awaiting processing
? Can transmit stored video, sound and text signals into the CPU and is fixed into the computer cabinet
? Is a section of the operating system always kept in RAM
? Is a name given to frequent movement of running programs to RAM and from hard disk and vice versa
? Keeps the address of the next instruction to be performed after the current one is through (5 marks)

(b) Name the likely part of the hardware or software which is causing the problem if:
(i) Messages are displayed onto the screen but the machine does not boot-up
(ii) The machine works for some time and then frequently hangs
(iii) The mouse keeps on running on the screen
(iv) The speed of processing suddenly drops
(v) The screen shows text and pictures but there is no sound ( 5 marks)
Question 2
(a) Explain the functions of the following as they relate to networks
(i) Router (2 marks)
(ii) Network Manager (2 marks)
(iii) Network operating system (2 marks)

(b) Your services are to be hired by the CEO of a small motor hardware store Kimbo Motors Ltd as a computer consultant. Kimbo wants to upgrade their old Intel Pentium III computer to a server to run the new version of windows (vista). They are worried about the speed of their processor, but believe it can be improved to run at 2.4GHZ or even faster. They equally believe they can add more RAM (512 MB) to one of its expansion slots so as to function as any modern Pentium IV processor if not better.

You are convinced it is not possible, but would want to prepare a half page report detailing your reasons. Your report should include the better option and its cost implications. (5 marks)

(c) Your friend a new BED graduate has opened a computer lab at his school. The lab which has 25 PCs is networked and needs modern printers. Which printer(s) would you recommend at a moderate cost? You may assume that the network includes the HM’s office. (4 marks)

SECTION B
Question 3
(a) Explain the functions of the following hardware inside the PC;
(i) IC paste
(ii) IDE cables
(iii) AGP video cards
(iv) Master Drive
(v) Jumper settings (5 marks)

(b) In trying to assemble a computer you realize there are three types of IDE connectors given and three different pins arrangement on the motherboard.
(i) Explain why you are given the three connectors. (3 marks)
(ii) Assuming you have a hard disk drive, floppy disk drive and a DVD drive to connect using the connectors, explain how will you connect them to function properly. You should give reasons for the choices made in your connections (6 marks)

(c) In assembling a new computer, you realize there is a modem card, a radio/ tv card and a sound card bought by your customer. Explain where you will insert them and why they are necessary. (6 marks)

Question 4
(a) Give a brief outline of the architecture and functions of the following auxiliary memory devices. In your description make a justification for the unique role played by the device;
(i) HDD drive
(ii) DVD drive
(iii) USB flash disk (6 marks)

(b) It is said the speed of processing in a computer is determined by :
(i) Processor speed
(ii) The type of IO devices attached
(iii) The memory size (RAM and HDD)
(iv) The bus architecture
(v) The efficiency of the operating system

Justify this claim (8 marks)

(c) Complete the table below for the properties of the named devices
Drive Name Memory Capacity Range Transfer speed Material Used
HDD
USB Flash
DVD
(4 marks)

Question 5
(a) Explain how a network administrator would use:
(i) Network card
(ii) Firewall
(iii) Password and user name
(iv) Antiviral program (8 marks)

(b) Explain the source of viruses and the methods which can be used to stop their spread in a computer network. (4 marks)

(c) Your customer, a research scientist wants you to purchase and install for him hardware and software into his laptop that would allow him to connect to internet at all times. In particular he wants to use the most efficient and modern network card and modem. He has bought a powerful mobile phone with a safaricom connection. What connectivity options would you give him and why? (5 marks)

(d) It has been observed that Linux operated software are less prone to viral attacks than window based software; explain why. (3 marks)

Question 6
(a) Differentiate between the following;
(i) LCD and CRT monitor (2 marks)
(ii) Laser-jet and desk-jet printer (2 marks)
(iii) Scanner and digitizer (2 marks)

(b) What type of printer would you recommend to the following, basing your choice on purchase and maintenance cost, durability, efficiency and convenience?
(i) A networked KEMU computer lab with 25 terminals
(ii) CEO of ENGEN
(iii) Nairobi City Council water billing department (9 marks)

(c) REMIO cars Ltd is a car hire company in Kisumu town where customers wishing to travel to several places in Western Kenya place their orders for vehicles both on-line and over the counter. They have invited you to install for them a modern automated vehicle booking system. The CEO is worried about the general security of their system. He is willing to spend anything to secure the system. What hardware and software security measures would you recommend to him? (5 marks)

Dbit 103: Computer Operations And Management Question Paper

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