Free 2017 waec Computer Studies 2 (Essay) 3:00pm – 4:00pm Computer Studies 2 (Objective) 4:00pm – 5:00pm

*WAEC COMPUTER STUDIES 2017/2018*

Comp Obj
1-10ACDCBDDCAB
11-20BADDCBBCDB
21-30ABBDABCBCB
31-40BCBAACCCBA
41-50DBDDCBCCDB
1a) Input device are devices by which data, information and instructions into the computer system
1b) keyboard
ii) light pen
1c) i) Logic gates are digital components that
typically work two levels of voltage and
determine how a component conducts
electricity.
ii) Logic gates use Boolean
equations and switch tables.

3a)
information is an analyzed or processed data, which is now
more meaningful and decisions can be made based on its
data and information is connected.
Communication technology is the activity of designing,
constructing and maintaining communication systems. In
the modern era it is referred to as ICT. This is information
and communications technology, and includes any
communication device or application such as radio and
television.

(3b)
LAN-local area network
GPS-global postioning Service.
IP-internet protocol

(3b)
LAN-local area network
GPS-global postioning Service.
IP-internet protocol

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4a)TABULATE
RAM: is the memory available for the operating system, programs and processes to use when the computer is running.
ROM: is the memory that comes with your computer that is pre-written to hold the instructions for booting-up the computer.
RAM:requires a flow of electricity to retain data (e.g. the computer powered on).
ROM:will retain data without the flow of electricity (e.g. when computer is powered off)

(4b)ii.
+Password-protect
+documents encryption
+Secure wireless transmissions
1a)
An input device is any hardware device that
sends data to a computer, allowing you to
interact with and control the computer.

1b)
i)key board
ii)The mouse

1c)
i) Logic gates are digital components that
typically work two levels of voltage and
determine how a component conducts
electricity.
ii) Logic gates use Boolean equations and
switch tables.

4b)
i)Searching and Organizing
ii)Ease of Access Center
iii)Default Programs
iv)Remote Desktop Connection
4c)
i)antivirus programs
ii)registry cleaners