NECO 2021 Data Processing Objectives and Essay Answers - 10th August 2021
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DATA PROCESSING (ESSAY)
(1ai)
(i)Fiber optics, also spelled fiber optics, is the science of transmitting data, voice, and images by the passage of light through thin, transparent fibers.
In telecommunications, fiber optic technology has virtually replaced copper wire in long-distance telephone lines, and it is used to link computers within local area networks.
(ii)Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility
(1aii)
(i)ST (Straight Tip Connector) •
(ii)SC (Subscriber Connector) •
(1bi)
A computer virus is a malicious software program loaded onto a user's computer without the user's knowledge and performs malicious actions.
(1bii)
Trojan Horse is a form of malware that captures some important information about a computer system or a computer network while Worm is a form of malware that replicates itself and can spread to different computers via Network.
(1c)
(i)Transmission Control Protocol (TCP)
(ii)Internet Protocol (IP)
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2021 NECO DATA PROCESSING (OBJECTIVES) ANSWERS:
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2021 NECO DATA PROCESSING (ESSAY) ANSWERS:
(2ai)
Data security refers to the process of protecting data from unauthorized access and data corruption throughout its lifecycle.
(2bi)
Authentication is the process of determining whether someone or something is, in fact, who or what it declares itself to be. Authentication technology provides access control for systems by checking to see if a user's credentials match the credentials in a database of authorized users or in a data authentication server.
(2bii)
Backup is the process of creating a copy of the data on your system that you use for recovery in case your original data is lost or corrupted.
DATA PROCESSING (OBJ)
1-10: DBCCEDACCD
11-20: AECCCCCDCA
21-30: EBBEDAABDB
31-40: CDBEADEDEE
41-50: BBDABEEAAE
51-60: ACCCAAACAE
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