Waec 2017 Data Processing Answers – May/June Expo

Data Obj
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1a)
i) super computer
ii) mainframe computer
iii)mini computer
iv) mirco computer
1b)
information and communications technology is an
umbrella term that includes any communication
device or application, encompassing: radio,
television, cellular phones, computer and network
hardware and software, satellite systems and so on,
as well as the various services and applications
1c)
i)Making learning more interesting for hard-to-
understand issues
ii)Bridging distances – e.g using e-mails, phone,
video conferencing etc.
iii)Breaking literacy barriers in communication – e.g
using video and radio.
=================
2a)
Computer ethics is a part of practical philosophy
which concern with how computing professionals
should make decisions regarding professional and
social conduct.
2aii)
+Capacity planning
+Real-Time monitoring
+Documentation management
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.
=================
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
===============
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
================
6ai) Monitor
6aii)
i. Monitor
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)
II and III
6vi)
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 radio player
6biv)
Virtual sequential access method
6ci)
300×1000/300=1000
6cii)
By compressing the image sizes

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