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Sma 2174: Introduction To Computers Question Paper

Sma 2174: Introduction To Computers

Course:Bachelor Of Science In Civil Engineering

Institution: Dedan Kimathi University Of Technology question papers

Exam Year:2013

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University Examinations 2012/2013
FIRST YEAR SEMESTER ONE EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN CIVIL ENGINEERING
SMA 2174: INTRODUCTION TO COMPUTERS
DATE: DECEMBER 2013 TIME 8.30-10.30AM
Instructions: Answer Question one and any other two Questions
QUESTION ONE: (30 Marks)
a) Define the following terms : (4 marks)
i. Router
ii. Virtual memory
iii. Byte
iv. Open source
b) State and explain three types of shortcuts keys. (3 Marks)
c) Explain two main reasons why a computer needs secondary memory. (4 Marks)
d) Showing your working convert the following numbers to decimal and binary respectively.
(4 Marks)
i. 10011112
ii. 11410
e) Define Pipelining and explain its importance: (3 Marks)
f) Define a bus and explain how it contributes to a computer’s processing speed.
(3 Marks)
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g) John suspects that his computer has been infected by a virus and he needs your assistance to fix it.
i. Define a computer virus: (1 Mark)
ii. Outline any four symptoms of a computer virus. (4 marks)
iii. Explain the measures you would adopt to safeguard your files from viruses.
(4 marks)
QUESTION TWO :( 20 Marks)
a) State any three differences between RAM and ROM. (3 Marks)
b) Using examples name and briefly explain three types of ports and their use (6 Marks)
c) What are the components of a processor and how do they complete a machine cycle?
(7 marks)
d) You have just purchased a new laptop and you have been advised to partition the hard disk.
i. Define partitioning: (1 mark)
ii. Explain how it contributes to performance? (3 marks)
QUESTION THREE: (20 Marks)
a) Differentiate utility programs and application programs using examples (4 marks)
b) “An operating system is a resource manager”. Justify this statement using examples
(5 marks)
c) Using an example explain how buffering and spooling increases efficiency (6 marks)
d) Kimathi University College wants to set up a physical transmission media to handle high traffic network. Giving reasons recommend the best cable and its advantages and limitations. (5 marks)
QUESTION FOUR: (20 Marks)
a) You have been hired by MIRANDA high school as a database administrator. You realize that they are using file processing systems. You make a recommendation to the administration to adopt the database approach.
i. Define a database. (2 Marks)
ii. State and explain the key benefits of the database approach. (4 Marks)
iii. Differentiate between field and record. (2 marks)
iv. Define a foreign key and explain its importance? (2 marks)
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b) Irene has just been given a document to edit explain to her how you would perform the following functions in Microsoft word 2007
i. Change the background color of a document (2 Marks)
ii. Insert page numbers (2 Marks)
iii. Correct a word that has been misspelt in the whole document.
(3 Marks)
iv. Protect your document with a password to open. (3 marks)
QUESTION FIVE: (20 Marks)
a) What is a spreadsheet? (1 marks)
b) Define the following terms (2 Marks)
i. Cell
ii. Function
c) Explain any four areas where spreadsheets are applicable (4 marks)
A
B
C
D
E
F
EMPLOYEES PAYROLL
Names
Basic Pay
Allowances
Gross Income
Tax
Net Income
1
Simon
10000
2
James
12000
3
Susan
9000
4
Angela
20000
5
Mark
16000
Information
House Allowance= 10% of basic pay
Tax=30% of Gross income
d) Using the above information state the functions you would use to compute the following for Susan
i. Allowance (3 marks)
ii. Gross income(2 marks)
iii. Tax (3 marks)
iv. Net income (2 marks)
e) Explain the procedure of creating a graph or chart in Excel (3 marks)

Sma 2174: Introduction To Computers Question Paper

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