WAEC 2016 MAY/JUNE 100% CORRECT ) (Essay),COMPUTER)(Obj),QUESTIONS AND ANSWERS – FOR ESSAY,THEORY AND OBJ

COMPUTER STUDIES:
1-10: AACBCDBCAB
11-20: ABCDACCBCD
21-30: CABCAACBCA
31-50: BDDBBACDBC
41-50: ABDBBADCAD

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(1ai )
Networking cables are networking hardware used to connect one network device to other network devices or to connect two or more computers to share printer, scanner etc .

(1aii )
(i) Coaxial cable
(ii)Optical fiber cable
(iii)Patch cable

(1b)
Very Small Aperture Terminal

(1ci)
-An email address is used to receive email messages and is under the nomenclature as thus Nameofyourchoice@domain.com
-website URL is an IP address in text resolved by your DNS server and often has nomenclature like this:
www.nameofyourchoice.com

(1cii)
Example of email
(i)xpressdynamo@gmail.com

Example of website:
(i)ww.waecdirect.org

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(2ai )
A computer virus is a malware that , when
executed, replicates by inserting copies of itself (possibly modified) into other computer programs , data files, or the boot sector of the hard drive; when this replication succeeds , the affected areas are then said to be “infected”.

(2aii)
(i) Web scripting Viruses
(ii) Polymorphic Viruses
(iii) Macro Viruses

(2b)
(i) Vulnerabilities and attacks
(ii)Backdoors
(iii)Denial-of-service attack
(iv)Eavesdropping
(v)Privilege escalation

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(4a)
8 bits = 1 byte
1000 byte = 1 kilobyte
1000 kilobytes = 1 megabyte

.:. 24000 bytes = 0.003 megabyte

Each line = 0.003mb
then 16 lines = 16×0.003 = 0.048mb
Electronic book pages = 500 pages
Megabyte space occupied by 500 pages ebook = 500 x 0.048
=24megabytes
ie 24mb

(4b)
(i)Flash Drive

(4ci)
(i) System software
(ii) Application software

(4cii)
(i) System software
(A) file management utilities
(B) Disk Operating system

(ii)Application software
(A)photoshop
(B)Adobe Reader

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