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Wednesday 24th June Paper III & II: Objective
& Essay –
Computer Studies – 10:00am –

1a) program dubugging is a methodical process of finding
and reducing the number of bugs, or defects, in a computer
program or a piece of electronic hardware, thus making it
behave as expected.
1b) i)Portability: Portability refers to the ability of an
application to run on different platforms (operating systems)
with or without minimal changes.
ii)Readability: The program should be written in such a way
that it makes other programmers or users to follow the logic
of the program without much effort.
iii)Efficiency: Every program requires certain processing
time and memory to process the instructions and data.
iv)Structural: To develop a program, the task must be broken
down into a number of subtasks.
1c) i)Syntax errors: errors due to the fact that the syntax of
the language is not respected
ii)Semantic errors: errors due to an improper use of program
iii) Logical errors: errors due to the fact that the specification
is not respected.

(2a) Peripheral Device – A peripheral device is defined as a
computer device, such as a keyboard or printer , that is not
part of the essential computer (i .e., the memory and
microprocessor ) . These auxiliary devices are intended to be
connected to the computer and used. Example : Keyboard,
( b )System Software – System software is computer software
designed to operate and control the computer hardware and
to provide a platform for running application softwares .
Example : Windows , Linux
( c) Operating System – An operating system (OS ) is
software that manages computer hardware and software
resources and provides common services for computer
programs . The operating system is an essential component of
the system software in a computer system. Application
programs usually require an operating system to function.
Example : Android 4.2 Jellybean , Windows 8
( d )Translator A translator is a computer program that
performs the translation of a program written in a given
programming language into a functionally equivalent
program in a different computer language , without losing the
functional or logical structure of the original code ( the ”
essence” of each program )

( 3a ) In serial method oorganization records are entered in
the order of their creation. As such , the file is unordered ,
and is at best in chronological order . This method is
primarily used as transaction files in which the transactions
are recorded in the order that they occur . while in Sequential
method organization files are sorted based on some key
values. This method are primarily used in applications where
there is a high file hit rate . Hit rate is a measure of the
proportion of the records that is accessed in a single run of
the application . Therefore , sequential method organizatio
are ideal for master files and batch processing applications
such as payroll systems in which almost all records are
processed in a single run of the application .
Some smart guys refreshed it as many times as possible so that they can see the answers, which they have seen, since yesterday.

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