Waec 2017 Computer Studies Obj And Theory Answers – May/June Expo

Wednesday, 12th April, 2017
Computer Studies 2 (Essay) 3:00pm – 4:00pm
Computer Studies 2 (Objective) 4:00pm – 5:00pm

WAEC

Computer OBJ:
1-10: ACDCBDDCCC
11-20: BADDCBBCDA
21-30: ABBDABCCCB
31-40: BCBBACDADC
41-50: BDDCCBCCDB

(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.

(1di)
VIEW THE DRAWING HERE

(1dii)
VIEW THE DRAWING HERE

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(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

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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)
(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
where B is 11

VIEW THE TABLE WELL HERE

(5b)
TABULATE
HACKER
A hacker gets user’s login details technically without any authorization or user’s awareness.

SCAMMER
Tricks an internet user into giving him his or
her login details

(5c)
-HTML:Hypertext Markup Language
-HTTP: Hypertext Transfer Protocol
-ISP: Internet Service Language
-SMTP: Simple Mail Transfer Protocol.

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10 Comments

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