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VERIFIED COMPUTER STUDIES 2017/2017 WAEC IS AVAILABLE HERE

By | On April 11, 2017 (3 months ago)

Computer Obj


1-10ACDCBDDCAB

11-20BADDCBBCDB

21-30ABBDABCBCB

31-40BCBAACCCBA

41-50DBDDCBCCDB


100% VERIFIED COMPUTER SCIENCE THEORY ANSWERS


1a)

Input device are devices by which data, information and instructions into the computer system


1b)

i. 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.


1d. CLICK HERE TO VIEW NO. 1D 

======================

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


==========================


(4a)

TABULATE

RAM

– It is the memory available for the operating system, programs and processes to use when the computer is running.


– It requires a flow of electricity to retain data (e.g. the computer powered on).


ROM

– It is the memory that comes with your computer that is pre-written to hold the instructions for booting-up the computer.

– It will retain data without the flow of electricity (e.g. when computer is powered off)


(4a)ii.

* Password-protect

* documents encryption

* Secure wireless transmissions


4b)

i)Searching and Organizing

ii)Ease of Access Center

iii)Default Programs

iv)Remote Desktop Connection

4c)

i)antivirus programs

ii)registry cleaners

==================================

5a)

10110112

=1*2^6+0*2^5+1*2^4+1*2^3+0*2^2+1*2^1+1*2^0

=1*64+0*32+1*16+1*8+0*4+1*2+1*1

=64+0+16+8+0+2+1

=91

tabulate

16|91

5 r B

O r 5

10110112=5B16

were B is 11


5b)TABULATE

       HACKER

i) A hack group getting main owner on an XAT

chat without authorization.


     SCAMMER


ii,) Tricking an internet user into giving you his/

her login name and password


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