Application Of Computer –based Examination System
[A CASE STUDY OF ABIA STATE POLYTECHNIC, ABA]

SECONDARY SOURCES OF DATA COLLECTION: Data from secondary source were collected from extensive use of library material documents released to the course of study. The essence of the secondary source of data collection is to make it possible for the researcher to examine some of the related literature on the system. It is also method used or employed where data obtained indirectly from the original source.
EXAMPLES OF PRIMARY SOURCE OF DATA COLLECTION
INTERVIEW METHOD: In view to investigation, office representatives were interviewed such as lecturers, HODs and faculty officers and their response were found to be useful to this study, as it obtained by physical contacts. The essential elements of the interview is obtained directly and in a short time than when other methods are employed since the interviewer is with the interviewed. This immediate feedback gives the researcher the opportunity to ask ambiguous questions and hence obtain detailed responses.
QUESTIONNAIRE METHOD: This technique is used here, to extract the information from number of staff and non-staff. Since the researcher was not able to be there with them, the researcher drafted skillful questions. This questions are simple, simple and to the point, it was shared among them.
OBSERVATION METHOD: This method of data collection, the researcher visited the school to witness or observe and understand the operation of the existing system, direct and this method was richly employed. During the observation, the researcher observed.
❖    The examination courses
❖    The marking system
❖    The recording system
EXAMPLES OF SECONDARY SOURCE OF DATA COLLECTION
TEXTBOOK METHODS: These are books containing the facts about the particular subjects on the topic.
NEWSPAPER METHOD: Newspaper publications  containing related topic.
INTERNET    METHOD:    Is    a    global    network    containing    and    providing information on the topic.
3.3.    PROPOSAL FOR THE NEW SYSTEM
Due to the problems of the existing system, there is need for the new system. The new system will ameliorate and enhance the performance of the existing system. To reduce the workload and also remove human errors, it will improve the credibility of writing exams. This can be done in many ways, and are as follows:
❖    Improved Statistical Analysis: More improved analysis of students performance can be done at no extra cost and faster.
❖    Automation: Automate the examination delivery, assessment and recording process, thereby minimizing clerical mistakes.
❖    Serves as preparatory tool: To provide intending CBT examiners in any part of the world with a robust platform for practicing and preparing, thereby improving their performance.
❖    Eco-friendliness: Cut down the use of paper thereby making it an eco-friendly initiative.
3.4.    PROBLEMS OF THE OLD SYSTEM
Due to the manual system being used in keeping information about studies examination processing, a lot of problems were encountered which includes:
❖    Takes a lot of time to retrieve a particular students result
❖    Loss of vital documents as the filling system
❖    Illegal removal of forms by fraudulent staff leading to insecurity
❖    Results hardly come out on time.
3.5.    OBJECTIVE OF THE NEW SYSTEM
The new system is expected to serve as a remedy to the problems and weakness observed in the existing systems. They are as follows:
❖    Authenticate student: when they login into the system with their details.
❖    Create sessions for each students: Each student has his/her own unique password, so when login your status on profile will be opened.
❖    Restrict the student to make only one selection of the options to the question.
No students can select more than one options from the questions that    is displayed (either is  A or B or C or D).
❖    Allow the student to go back to review or modify already answered question.
This is when the students have finished answering he/she can go back to review
or click the options that has been answered and can change the options that has been chosen (i.e. from A to B to C to D ).
❖    Generate questions randomly: this is when the computer generate questions so that each of the questions is not the same question at the same time.
❖    Prevent repetition of questions already generated this is when the question(s) that has been answered cannot show again.
❖    Computations of students score at the end of the exam. When the student click submit within few seconds the result will be shown or displayed.
❖    Flexibility: Examination can be taken at different places and at different time.