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BIT 1303  BUSS 208  ELECTRONIC COMMERCE  KCA Past Paper

UNIVERSITY EXAMINATIONS: 2014/2015
ORDINARY EXAMINATION FOR THE BACHELOR OF BUSINESS
INFORMATION TECHNOLOGY
BIT 1303 BUSS 208 ELECTRONIC COMMERCE
DATE: DECEMBER, 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO

QUESTION ONE
(a) Briefly explain the features of internet Commerce technology that has resulted in
paradigm shift from the traditional business thinking. [7marks]
(b) Briefly explain the features of marketing via the internet. [4marks]
(c) Discuss the impacts of E – Commerce and Internet on organizations. [10marks]
(d) Describe FIVE factors to consider while designing a web site. [5marks]
(e) Explain four characteristics of successful E – payment methods. [4marks]
QUESTION TWO
(a) Describe the following methods of E- payments, over the internet, giving at least two
examples of each.
i) Electronic cards. [3marks]
ii) E-cash and innovative payment methods. [3marks]
iii) Global B2B payments. [3marks]
iv) Stored value cards. [3marks]
(b) Briefly explain the components of a well functioning commercial website.
[8 marks]
QUESTION THREE
(a) Discuss the Three-tier architecture of E – Commerce. [9marks]
(b) Briefly explain the key elements that contribute to a successful business model in
E – Commerce. [8 marks]
(c) Explain THREE advantages of E – Commerce. [3marks]
QUESTION FOUR
(a) Describe the fundamentals of Wheelbarrow in E – Commerce. [8 marks]
(b) Describe the principles for designing the information architecture of the shopping
cart and check out process. [8marks]
(c) Describe four types of cyber attacks commonly used in contemporary society.
[4 marks]
QUESTION FIVE
(a) Discuss the following E – Commerce business Models giving their benefits and limitations and where they can be applied
i) Virtual store front [3marks]
ii) Market Aggregators. [4marks]
iii) E – Procurement [3marks]
(b) Discuss the types of adverts used in the internet. [10 marks]

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BIT 1302A ELECTRONIC COMMERCE KCA Past Paper

UNIVERSITY EXAMINATIONS: 2013/2014
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 1302A ELECTRONIC COMMERCE
DATE: AUGUST, 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO

QUESTION ONE
a) Outline any FOUR components of an electronic catalog. [8 Marks]
b) Explain the term digital revolution. [3 Marks]
c) Describe FOUR benefits of an electronic market to the buyer. [8 Marks]
d) Explain public e-market places as an example of e-market. [2 Marks]
e) Explain how forward and backward auctions work in B2B, stating clearly where
each is used. [4 Marks]
f) For electronic transactions authentication and non-repudiation are important legal
concerns. Explain what each is and why each is of particular concern in electronic
transactions. [5 Marks]
QUESTION TWO
a) Explain the following online advertisement methods
i) Banner advertisements: [3 Marks]
ii) Email advertisement: [3 Marks]
b) Explain how search engines work with respect to electronic commerce. [14 Marks]
QUESTION THREE
a) With regard to SWOT analysis, explain why an investor should scan the business
environment. [6 Marks]
b) Explain any FIVE general benefits of electronic commerce. [5 Marks]
c) Identify any FIVE digitizable products. [5 Marks]
d) What makes electronic payment using mobile personal devices so attractive (credit and debit
cards)? [4 Marks]

QUESTION FOUR
a) Define the term supply chain as used in ecommerce. [3Marks]
b) Explain how reintermediation can be achieved in electronic commerce. [4 Marks]
c) Electronic data interchange (EDI) is the electronic exchange of business information
between organizations or trading partners in standardized formats. Outline any four
types of business information that can be exchanged using EDI. [4 Marks]
d) Explain any FOUR applications of extranets in ecommerce. [8 Marks]
e) What is the motivation for micropayment systems? [1 Mark]
QUESTION FIVE
a) Explain any SIX components of a successful commercial website. [12 Marks]
b) Explain how an online credit card payment method works. [8 Marks]

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BIT 1207A DATABASE SYSTEMS PRINCIPLES KCA Past Paper

UNIVERSITY EXAMINATIONS: 2013/2014
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 1207A DATABASE SYSTEMS PRINCIPLES
DATE: AUGUST, 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO

QUESTION ONE (COMPULSORY)
(a) Identify the roles of the following people
(i) Database designer (2 Marks)
(ii) Database administrator (2 Marks)
(b) With respect to information management, compare the following concepts;
(i) Instance and schema (4 Marks)
(ii) Tuple and attribute (4 Marks)
(iii) File system and DBMS (4 Marks)
(c) Describe any four disadvantages of the file-based systems (4 Marks)
(d) Discuss any four functions of a database management system (4 Marks)
(e) There are three default database schemas that found in SQL namely informationschema, mysql and test. Discuss each showing its role in DBMS. (6 Marks)
QUESTION TWO
a) i) Define the term ‘SQL’ with reference to database systems (2 Marks)
ii) Distinguish between data definition and data manipulation (2 Marks)
b) Use the table (STUDENT) below to answer the questions that follow;

(i) Write SQL statement to create the above table: STUDENT (4 Marks)
(ii) Write SQL statement to insert data in that table. (4 Marks)
(iii)Write SQL statement to list Stu-Id, Surname and fees (4 Marks)
(iv)Write SQL statement to insert the fifth row. Select values of your own
(4 Marks)
QUESTION THREE
(a) Discuss normalization. Show why its is important in database design and demonstrate
how it is done. Include UNF, 1NF, 2NF and 3NF. (10 Marks)
(b) Discuss the database life cycle. (10 Marks)
QUESTION FOUR
(a) Below is a list of potential entities for a hotel database;
– Customer
– Meal
– Service
Draw an ERD diagram showing all possible attributes together with PK and FK.
(10 Marks)
(b) (i) What is data integrity (2 Marks)
(ii) Discuss four important database security features (4 Marks)
(iii) What are constraints? Discuss three benefits of constraints (4 Marks)
QUESTION FIVE
(a) Discuss three levels of database design. (6 Marks )
(b) Write short notes on the following topics: (8 Marks)
(i) Data warehouse
(ii) Data mining
(iii) Client/Server database
(iv) Web database
(c) Discuss three dependencies’ used during normalization (6 Marks)

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BIT 1207 BBIT 202  PRINCIPLES OF DATABASE DESIGN  KCA Past Paper

UNIVERSITY EXAMINATIONS: 2014/2015
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY/ BUSINESS INFORMATION
TECHNOLOGY
BIT 1207 BBIT 202 PRINCIPLES OF DATABASE DESIGN
DATE DECEMBER 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO

QUESTION ONE. (COMPULSORY)
(a) Describe any four disadvantages of the file-based systems (4 Marks)
(b) Discuss the five components of the database management system (5 Marks)
(c) Identify the roles of the following people
(i) Database designer (1 Mark)
(ii) Database administrator (1 Mark)
(iii) Database user (1 mark)
(d) With respect to information management, compare the following concepts;
(i) Instance and schema (4 Marks)
(ii) Tuple and attribute (4 Marks)
(iii) File system and DBMS (4 Marks)
(e) There are three default database schemas that found in SQL namely informationschema, mysql and test. Discuss each showing its role in DBMS. (6 Marks)
QUESTION TWO
(a) Below is a list of potential entities for a hotel database;
– Student
– Lecturer
– Courses
Draw an ERD diagram showing all possible attributes together with PK and FK.
(10 Marks)
(b) (i) What is data integrity (2 Marks)
(ii) Discuss four important database security features (4 Marks)
(iii) What are constraints? Discuss three benefits of constraints (4 Marks)
QUESTION THREE
a) i) Define the term ‘SQL’ with reference to database systems (2 Marks)
ii) Distinguish between data definition and data manipulation (2 Marks)
b) Use the table (STUDENT) below to answer the questions that follow;

(i) Write SQL command to create the above table: STUDENT (4 Marks)
(ii) Write another SQL command to insert row 5that table. Use your own data.
(4 Marks)
(iii) Write an SQL Command to list all students doing BSC-IT (4
Marks)
(iv)Write an SQL to replace surname KILONZO to KIOKO for STU-ID ST-001.
(4 Marks)
QUESTION FOUR
(a) Discuss three levels of database design. (6 Marks)
(b) Write short notes on the following topics: (8 Marks)
(i) Data warehouse
(ii) Data mining
(iii) Client/Server database
(iv) Web database
(c) Discuss three dependencies’ used during normalization (6 Marks)
QUESTION FIVE
(a) Discuss normalization. Show why its is important in database design and demonstrate
how it is done. Include UNF, 1NF, 2NF and 3NF (10 Marks)
(b) Discuss the database life cycle. (10 Marks)

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BIT 1205  SYSTEMS ANALYSIS  DESIGN KCA Past Paper

UNIVERSITY EXAMINATIONS: 2014/2015
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 1205 SYSTEMS ANALYSIS & DESIGN
DATE: DECEMBER 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO
SECTION A (30 Marks): Answer ALL questions in this Section

QUESTION ONE
Briefly describe the activities carried out in the following phases of the systems
development life cycle.
i) System Analysis (2 marks)
ii) System Design (3 marks)
a) As a system analyst on the development team, you chair a meeting to define the aims
of system improvement with the project owners and users. Describe any 3 reasons
why system improvement is done. (6 Marks)
b) Describe any two roles of the system review committee during system analysis.
(4 marks)
c) What do you understand by the following terms;
i) Operational Feasibility (2 Marks)
ii) Technical Feasibility (2
Marks)
iii) Legal Feasibility (2 Marks)
d) The rules of deciding the postage of a postal parcel is described as follows: if the parcel is to be sent by express, then the basic charge will be 6$/kg, otherwise the basic
charge will be 4$/kg. If the distance is over 200km, then each kg will be charged for
one more dollar. If the parcel’s weight is over 10kg, then another 0.5 dollar will be
charged for each kg that exceeds 10 kg. Suppose a parcel’s weight is W kilograms,
please draw a decision table to show the calculation of the postage for this parcel.
Draw Decision table to show the calculation of the postage for this parcel.
(5 Marks)
e) With reference to the KCA students’ results system, give a typical example of each
one of the following:
i) A process (1 mark)
ii) A data flow (1 mark)
iii) A data store (1 mark)
iv) An entity (1 mark)
SECTION B: Answer ONLY Two (02) Questions
QUESTION ONE
Data Flow Modelling is widely used in the Structured System Analysis and Design
Methodology (SSADM).
a) Explain the purpose of Data Flow Modelling. (2 Marks)
b) Draw and explain the symbols used in Data Flow Diagrams. (6 Marks)
c) With the aid of a sketch, explain the different levels in data flow diagrams.
(5 Marks)
d) Explain the differences between logical and physical data flow diagrams, and suggest
how one is derived from the other. (4 Marks)
e) In which stages of SSADM are the different data flow models created? (3 Marks)
QUESTION TWO
Nairobi High School has recently been formed by joining together six smaller schools.
The head teacher wants to have a modern ICT system to administer staff and student
records. She has decided to employ a systems analyst to look at the existing systems and
recommend a new system. The system will need to produce hundreds of reports in one
session and should be able to find individual records very quickly. Using the results of
the analysis of the current system the analyst will need to design the new system. Once
the system has been designed and developed, user and technical documentation will need
to be produced.
a) Other than observation, describe the methods that the systems analyst could use to research the current systems. (6 Marks)
b) Describe four different items that the systems analyst will need to include at the requirements modeling stage. Using the scenario of Nairobi High School, explain the
factors that will influence the choice of each item. (4 marks)
c) Explain the purpose of technical documentation. (3 Marks)
d) Describe the two types of technical documentation including details of the contents of
each one. (7 Marks)
QUESTION THREE
a) Some systems analysts find it better to start with a decision table, and then construct a
decision tree. Others believe it is easier to do it in the reverse order. Which do you
prefer? And Why? (5 marks)
b) Explain at least three specific data validation checks that might help reduce input errors into a system. (3 marks)
c) Explain at least four user interface design guidelines that a system analyst can follow
to improve appearance the new system. (8 marks)
d) Explain the difference between the structured and agile software development methods. (4 marks)
QUESTION FOUR
At the Faculty of Computing and Information Management (FoCIM) CATs and Final exams are scheduled to take place during the timester. Initially, a final exam time table is issued out to students for use during examinations which are based on degree program of3
fered and the various course units in the program. The examination time-table displays
the date, time and room allocation when and where a specific course unit will be done.
However students’ sitting arrangement is done according to alphabetical order of students’ surnames, which is dependent on the number of students doing a given course unit.
As a result room allocation keeps changing which causes inconveniences, such as spill
over of students especially for the bigger group whose names start with K to O; wastage
of time when trying to identify extra room for affected students. These concerns cause
students, invigilators and supervisors to get very anxious. The management of FoCIM
would like advice on proper systems analysis and design to automate the Students examination sitting arrangement.
a) Write a clear problem statement for the above business case scenario that the Management of FoCIM would present in the request for proposal for a new system.
(2Marks)
b) How best would you systematically solve the business case in 1 clearly pointing out
the specific methods? (5 Marks)
c) Describe the system boundary for the student examination sitting arrangement.
(2Marks)
d) Suggest any one possible requirement to achieve efficient and effective student examination sitting arrangement for the following categories:
i) Functional Requirements (1 Mark)
ii) Non-Functional Requirement (1 Mark)
iii) System Requirements (1 Mark)
e) Briefly explain any one advantage of using CASE tools during the development of
the Students Examination Sitting Arrangement System for FoCIM.

(2Marks)
f) Draw a Context diagram for the student examination sitting arrangement system.
(6Marks)

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BIT 1204 FUNDAMENTALS OF ORGANIATINAL MANAGEMENT KCA Past Paper

UNIVERSITY EXAMINATIONS: 2014/2015
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 1204 FUNDAMENTALS OF ORGANIATINAL MANAGEMENT
DATE: DECEMBER, 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO

QUESTION ONE
a) What is good management? (2 Marks)
b) What issues or problems would an organization encounter with a matrix
structure? (4 Marks)
c) Define the following terms (10 Marks)
-responsibility
-authority
-power
-accountability
-delayering
d) Some people argue that employees are either highly motivated or they are not, and
there is little the firm can do to change that predisposition. Do you agree? Why or
why not? (10 Marks)
e) Explain the impact of restructuring (4 Marks)
QUESTION TWO
a) Outline the importance of goals in management. (6 Marks)
b) Explain the situations that would signal a problem in business. (4 Marks)
c) Describe the steps in decision making process. (10 Marks)
QUESTION THREE
a) Define departmentation. (2 Marks)
b) Describe the different departments in your university. (8 Marks)
c) Explain the following types of power (10 Marks)
-legitimate power
-reward power
-referent power
-coercive power
-charismatic power
QUESTION FOUR
a) Suppose you are on a project team with five students, an one of team members
never shows up for your weekly meetings. Soon your project is due to be turned
in to the lecturer. You and other team members are getting concerned about this
“free rider”. How should the team deal with this problem? (4 Marks)
b) Differentiate between recruitment and selection (4 Marks)
c) Describe the four skills for managers and administrators. (8 Marks)
d) Explain briefly the four key functions of management (4 Marks)
QUESTION FIVE
a) Explain the factors that affect the businesses indirectly. (8 Marks)
b) What does it mean to be a socially responsible employer? What are the benefits
for a company that decides to give priority to its social responsibility? (6 Marks)
c) Describe one firm that has participated well in social responsibility. (6 Marks)

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BIT 1203  WEB DESIGN AND DEVELOPMENT KCA Past Paper

UNIVERSITY EXAMINATIONS: 2014/2015
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 1203 WEB DESIGN AND DEVELOPMENT
DATE: DECEMBER, 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO

QUESTION ONE (30 MARKS)
(a) Briefly explain the characteristics of HTML elements. [6 Marks]
(b) When frames were introduced, web designers were excited about their functionalities.
However frames have many drawbacks. Describe any three drawbacks of frames.
[6 Marks]
(c) Describe the services offered by the internet. [5 Marks]
(d) Give the functions of the following as used in HTML
i). <ISINDEX> [2
Marks]
ii). <NEXTID> [2
Marks]
iii) <BASE> [2 Marks]
(e) Write a html Code to produce the following table [7 Marks]

a). Describe the purpose of the following as used in forms
(i) Radio Buttons [2 Marks]
(ii) Check Boxes [2 Marks]
(iii) Drop Down Boxes [2
Marks]
b). (i) Explain what you understand by the term Web Page editor [1 Marks]
(ii) Discus the advantages of a web page editor [3 Marks)
(iii) State and explain any FOUR features provided by these editors [8
Marks)
c). Html tags can be grouped in to two groups describe the two groups
[2 Marks]
QUESTION THREE
a). Animated graphics for a web takes various forms; a simple common form is an
animated gif file. State and explain Four Commonly used tools for animation
[8 Marks]
b). Describe the function of ACTION and METHOD attributes as used in forms and
show how they are used in a code. [4 Marks]
c). Write a HTML code to produce the form below [8 Marks]


QUESTION FOUR
(a) Draw a table to be generated by the following html code. NB: Approximate the sizes
<html>
<head>
<title>New Page 1</title>
</head>
<body>
<table border=”1″ cellpadding=”0″ cellspacing=”0″ style=”border-collapse: collapse”>
<tr>
<td width=”289″ height=”21″ colspan=”3″>
<p align=”center”><b>KCA UNIVERSITY</b></td>
</tr>
<tr>
<td width=”73″ height=”65″ rowspan=”2″ align=”center”>CLASSES</td>
<td width=”73″ height=”65″ rowspan=”2″ align=”center”>REST SPACE</td>
<td width=”141″ height=”23″>LIBRARY</td>
</tr>
<tr>
<td width=”141″ height=”41″>MAIN ADMIN</td>
</tr>
</table>
</body>
</html> [6 Marks]
(b) Describe the functions of the following HTML tags giving an example of their use in
HTML code.
(i) <FRAME>
(ii) <FRAMESET>………..</FRAMESET>
(iii) <NOFRAMES> ELEMENT [6 Marks]
(iv) Write HTML code to divide the computer screen into frames as shown in
figure (i) below [6 Marks]


( c) Briefly explain the meaning of HTTP. [2 Marks]
QUESTION FIVE
(a) Briefly explain the features of World Wide Web (WWW) [5 Marks]
b) Describe the protocols of the internet. [6 Marks]
(c) Explain the Internet addressing modes. [4 Marks]
(d)Discuss the various types of servers. [5 Marks]

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BIT 1110 MATHEMATICS FOR SCIENCE KCA Past Paper

UNIVERSITY EXAMINATIONS: 2014/2015
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 1110 MATHEMATICS FOR SCIENCE
DATE: DECEMBER, 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO

QUESTION ONE (30 MARKS)

QUESTION TWO (20 MARKS
a) i) State the remainder theorem and factor theorem

QUESTION THREE (20 MARKS)
a) i) State the difference between a sequence and a series (2 Marks)
ii) In a geometrical progression, the sum of the second and third terms is 6, and
the sum of the third and fourth terms is -12. Find the first term and the
common ratio. (7 Marks)
b) Tasha was recently employed by a company with annual salary of Ksh 50,000. Salary
scheme entails an annual salary increase of Ksh. 10,000 at the end of each year of service. Find the total salary to be earned by Tasha during 40 year. (4 Marks)
c) Solve for values of θ from 0
0 to 0
360 inclusive

θ θ23 − 3cos = 2sin
(7 Marks)
QUESTION FOUR (20 MARKS)

QUESTION FIVE (20 MARKS)

 

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BCU 102 FOUNDATIONS OF MATHEMATICS – DISTANCE LEARNING KCA Past Paper

UNIVERSITY EXAMINATIONS: 2014/2015
ORDINARY EXAMINATION FOR THE BACHELOR OF BUSINESS
INFORMATION TECHNOLOGY
BCU 102 FOUNDATIONS OF MATHEMATICS – DISTANCE
LEARNING
DATE: DECEMBER, 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO

QUESTION ONE (30 MARKS)
a) Find the converse, inverse and contra positive of the implication “if today is Sunday,
then I will go to church ” (3 marks)
b) Construct the truth table for the following statement formula:

c) Test the validity of this argument “if Peter solved seven problems correctly, then Peter obtained the grade A. therefore Peter solved seven problems correctly. (6 marks)
d) In a recent survey of 400 students in a college,100 were listed as studying typing,150
were listed as studying accountancy and 75 were registered for both courses.
i. Represent the above information in a Venn diagram.
ii. Determine the number of students registered for typing only.
iii. Determine the number of students registered for accountancy only.
Determine of students in the college who were not registered for either typing or
accountancy

QUESTION TWO (20 MARKS)
a) Define the term proposition. (2 marks)
b) Determine whether the following argument form is valid.

c) Write the negative of each of the following statements
i) 2 is positive
ii) Today is Sunday

d) Show that formula A : ( p → q) ∧ ( q → r) is logically equivalent to form B : p →(q ∧r)
(6 marks)
QUESTION THREE (20 MARKS)
a) Let a, b and c be integers, then prove that for any integer a, a ×0 = 0 (4 marks)
b) Use direct proof to show that product of two odd integers is an odd integer.
(6 marks)
c) Show by truth table for each of the following statement formula is a tautology.

¬ p → ( p → q) (5 marks)
d) Prove or disapprove that
( p → q) ∨ (¬ p → q) and q are logically equivalent. (5 marks)
QUESTION FOUR (20MARKS)
a) What is the truth value of the quantification∀x p(x) ? The domain of the discourse
is the set of all positive integers.

i. p( x) : ( x +1) ( x + 2) is an even integer
ii. p( x) : x + 1〉 x
iii. p( x) : x + 2 〉 5
iv. ( ) : x 2 3
2
p x + = (4 marks)
b) Let U ={1, 2, 3, 4, 5, 6 , 7} , A ={1, 3, 4, 6} and B ={2, 4, 5} be sets, where U acts as the
universal set. Determine the following.
i. ( )
/
A∪B
ii. ( A∩B)

iii. A − B
iv. B −C (4 marks)
c) Give a direct proof to show that if x and y are even integers, then x + y is an
even integer. (5
marks)
d) Use indirect proof to prove the following. Let n be an integer. If 3
2
n + is odd then n
is even. (7marks)
QUESTION FIVE (20MARKS)

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BIT 1109 BBIT 102 COMPUTER ORGANIZATION  ARCHITECTURE KCA Past Paper

UNIVERSITY EXAMINATIONS: 2014/2015
ORDINARY EXAMINATION FOR THE BACHELOR OF BUSINESS
INFORMATION TECHNOLOGY
BIT 1109 BBIT 102 COMPUTER ORGANIZATION &
ARCHITECTURE
DATE: DECEMBER, 2014 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO

QUESTION ONE (30 MARKS)
a) Differentiate between computer architecture and computer organization.
(6 marks)
b) Explain the significance of layered architecture. (4 marks)
c) Define Super Scalar Processor (4 marks)
The scalar processor executes one instruction on one set of operands at a time
d) Write brief notes on a Pentium processor (5 marks)
e) What is parallelism and pipelining in computer Architecture? (6 marks)
f) Define ASCII code (3 marks)
g) Computer the sum for the following binary numbers 110101+110111 (2 marks)
QUESTION TWO
a) Briefly explain instruction format. (6 marks)
b) Differentiate between RISC and CISC. (8 marks)
c) What is super pipelining? (2 mark)
e) State the memory hierarchy (4 marks)
QUESTION THREE
a) Distinguish between the cache memory and virtual memory (4 marks)
b) What is meant by DMA? (5 marks)
c) Define the terms: Seek time, Rotational Delay, Access time. (6 marks)
d) A Hard disk with 5 platters has 2048 tracks/ platter, 1024 sector/track (fixed
number of sector per track) and 512 byte sectors. What is its total capacity?
(5 marks)
QUESTION FOUR
a) Differentiate among direct mapping and associate mapping. (5 marks)
b) Describe the FIVE computer generations. (10 marks)
c) List the FIVE functions of the operating system. (5 marks)
QUESTION FIVE
a) Define the following operating system terms (3 marks)
i) Multiprocessing
ii) Multiprogramming
iii) Multitasking
b) State the FIVE key advantages of having a database management system in an
organization. (5 marks)
c) What do you understand by pipelining in computer architecture? (2 marks)
d) Write various steps involved to perform Mail-Merge. (5 marks)
e) State the challenges for using voice recognition and pattern recognition systems for
input. (5 marks)