Waec 2017 DATA PROCESSING answers expo

DATA PROCESSING OBJ:
1-10: BCDABBCBAC
11-20: ABBDCBDBDA
21-30: DAACBBACDB
31-40: DDCBAADDBD

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(3a)
Web programming
(3b)
Web programmer
(3c)
-VB.NET
-MYSQL

(3di) Intranet

(3dii)
-It is a cheap medium of communication
-It does not give room for leakage of secret information by hackers
-It is easy to maintain. It requires less technical knowledge.

(3e)
-Router
-Modem

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1c.
— ICT has also change the way we shop
ICT has changed the way we shop lots of people shop online now for a number of things like: cloths, games, food and music witch is easier for us most of the time

— ICT technology has changed the way we judge sports how we watch them and also in some case’s how we competed in them. the use of game consoles have a lot to do with sport is well Lewis Hamilton said that he managed to learn the racing tracks because he had played them on his PlayStation

— Some ICT technology has taken over lots jobs because for example one special built robot can do the work that 60 people would do in a quicker time and also up to a better standard and this is happening because now it is cheaper for the business or companies to do this because then they don’t have to pay the works or pay to keep the room or area they work in heated they also don’t have to pay for sick pay and the robots will work longer they would be faster and the work would be better quality then humans.

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1a)

i) super computer

ii) mainframe computer

iii)mini computer

iv)mirco computer

i)super computer :

They are most powerful ans expensive computers. they have externally large storage capacities and processing speed is at least 10 times faster than other computers.some of the super computers are NEC , CRAY ,CYBER 205,CDC STAR 100 etc.

ii) mainframe computer:

they are midium or large machine ,made of several units connected together . it’s generally used in big organizations.

iii) mini computer:

they are like small mainframes. they consist of a few seperate units connected together . they are not powerful as mainframe computers.

iv) micro computer:

they are the smallest general purpose computers. they are about the same size an of a typewriter machine . they are used in diffrent applications like business, engeneering , schools, colleges , entertainment etc.

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(1b )

Information ormation and communications technology (ICT) refers to all the technology used to handle telecommunications, broadcast media, intelligent building management systems, audiovisual processing and transmission systems, and network-based control and monitoring functions.

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2(a) Computer ethics is a part of practical philosophy which concern with how computing professionals should make decisions regarding professional and social conduct.

2b)
i)Pupils are prohibited to enter the lab unless authorised by the teacher.
ii)Scan diskettes before using them.
iii)Report all problems related to the system to the teacher.
iv)Do not attempt to repair or tamper with lab equipment.
v)Be responsible when using equipment, software and facilities in the lab.

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(4a)
Software maintenance in software engineering is the modification of a software product after delivery to correct faults, to improve performance or other attributes.

(4b)
-Corrective
-Perfective
-Adaptive
-Preventive

(4c)
-Corrects fault
-Improves performance
-Adapts to a changing environment
-Predictive cash flow

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6ai) Monitor

6aii)
iMonitor
ii. printers

6aiii) III. – CPU
VI- SOCKET AC SOURCE
VII- PRINTER.

6iv) Ensure you use stabilizer when using the computer so that the power source will not be fluctuating.

6v) true the Keybord/CPU

6vi) fan or Internet Modem

6bi)
Fig2. is a DVD diskette
Fig3. Is a magnetic tape diskette
6bii)
The magnetic tape media is most suitable
6biii)
A radio player
6biii)
A r
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