MK-MG-ESS-TEL-EPS-ICT-HM-SM-CED-WWK-UPS-MF-AE-FT-FCT-BFP-FMC-NU-MLS-HCM-ACR-LTM-SHM-ND-PSA-MW-ME-CHE-HMA-TAT-SO(COMPUTER FOR BUSINESS-min

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National Higher National Diploma Exam – June –
July 2016 Session
Specialty: MK-MG-ESS-TEL-EPS-ICT-HM-SM-CED-WWK-UPS-
MF-AE-FT-FCT-BFP-FMC-NU-MLS-HCM-ACR-LTM-SHM-ND-
PSA-MW-ME-CHE-HMA-TAT-SO
Paper:Computer for Business
Coeff:1
Duration: 2 hours
SECTION A: Multiple Choice Questions (One mark per
question)
1. Translate high level instructions to machine level instructions
a) Compilers
b) Interpreter
c) Assemblers
d) Web browser.
2. How many kilobytes are equivalent to one megabyte?
a) About 100
b) About 1000
c) About 10000

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3. A combination of individual of general purpose application
package that work easily together
a) Middleware
b) Operating Systems
c) Web Services
d) Integrated Package
4. What parameter is used to specify data transfer speed
a) bps
b) dpi
c) ppm
d) MHz
5. The access method used for magnetic tape is
a) Direct
b) Random
c) Sequential
d) None of the above
6. Which of the following holds the ROM, CPU and RAM?
a) Hard disk
b) Floppy disk
c) Mother Board
d) Uncle board.
7. Which of the following devices can be used to directly input
printed text?
a) OCR
b) OMR
c) MICR
d) None of the above.
8. Which of the following is used as a primary storage device?
a) Magnetic Tape
b) PROM
c) CD ROM
d) USB Key.

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9. Execution of two or more programs by a single CPU is known
as:
a) Multiprocessing
b) Time sharing
c) Multiprogramming
d) Multitasking
10. Which of the following topologies is not of broadcast type?
a) Star
b) Bus
c) Ring
d) None of the above
11. A translator is best described as
a) An application software
b) A system software
c) A hardware
d) None of the above
12. Which of the following does not represent an I/O device?
a) Speaker with beeps
b) Joystick
c) Plotter
d) ALU
13. The communication line between the CPU, Memory and
Peripherals is called a
a) Bus
b) Line
c) Media
d) None of the above.
14. Which of the following I/O devices are commonly used by a
cashier in a restaurant?
a) Thermal Printer
b) Laser

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c) Inkjet
d) None of the above
15. The language which the computer can understand and
execute is called
a) An operating System
b) Machine language
c) Application software
d) None of these
16. Third generation computers
a) Were the first to use built-in error detecting device
b) Used transistors instead of vacuum tubes
c) Where the first to use gears and shafts
d) None of these.
17. A computer can be defined as an electronic device that can
(choose the most precise definition)
a) Carry out arithmetic operation
b) Carry out logical function
c) Accept and process data using a set of stored instructions
d) Display information on a VDU.
18. A bootstrap is
a) A memory device
b) A device to support the computer
c) A small initialization program to start up a computer
d) An error correction techniques.
19. What does HTML stand for?
a) Hyper Type Machine Language
b) Hyper Tutorial Markup Language
c) Hyper Text Machine Language
d) Hyper Text Markup Language
20. Yahoo.com,google.com, Test.com are all
a) Browsers
b) Email addresses
c) Domain names

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d) Protocols
SECTION B (Short Answer – 2 marks for each right answer)
1. What is a web browser? Name any three.
2. What is the purpose of a URL to a user?
3. How can the risk of unauthorized computer system access
be reduced?
4. What is a Spam?
5. What is system software?
6. List the topologies of computer network.
7. Define analog computer.
8. What is a computer bug?
9. Which was the electronic component that was used in the
first generation computers?
10. Name any three application software.
11. What is the meaning of PROM?
12. Define impact and non-impact printers
13. Distinguish between compiler and interpreter.
14. Distinguish between Unicode and ASCII code.
15. Distinguish between DOS and the Windows operating
system.

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SECTION C: (Extended Question - Marks are allocated to
each question)
Fiber Construction is a construction company with a
workforce of 50 which includes a Managing Director, 4 Supervisor,
5 Foremen, a Secretary, and an Accountant, while the rest are
daily paid worker. The Secretary is responsible for all secretarial
duties, including preparing/replying to correspondence as well as
memos. The Accountant amongst other duties prepares a
monthly payroll. Occasionally, the Managing Director may do
some presentations stakeholders on the work evolution at the
construction sites. The office is located at the commercial center
of the city, in a well-protected room. Computer infrastructure wise,
the company has not serve machine, 6 personal computers, and
a 16-port Ethernet switch, all linked-up in a network. The Board of
administrators plans for a web site in the nearest feature.
Answer the following questions:
a) Name any two applications software that the Secretary may
use in preparing memos (2marks)
b) The Director in his occasional talks to stakeholders requires
graphical application software. State any two of your choice
that may be used.
(2marks).

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c) The accountant may require a spreadsheet for his activities,
name any two (2marks)
d) Whose service may be required for the structure to have
access to WWW resources? (2marks)
e) What is the purpose of a website? (2marks)
2. Explain the generations of computers (5marks)
3. Draw a neat labeled block diagram of a computer system and
explain.
(15marks)
4. What is computer system failure? What are the causes and
how can they be prevented?
(10marks)
5. What is a CD-ROM? In what way is it different from a hard
disk?
(10marks)