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DATA PROCESSING:
1-10: DEEBDCCCAA
11-20: BBBAAADEAB
21-30: EDCDADBAEA
31-40: ABCBDADBDB
41-50: DBBEEBDCBA
51-60: AADBCACCDB

(2a)
(i) A computer virus is a malware that, when executed, replicates by reproducing it self or infecting other programs by modifying them. Infecting computer programs can include as well, data files, or d boot sector of d hard drive. When this replication succeeds, the affected areas are then said to be “infected”.
(ii) Automatic recalculation is d automatic adjustments made on a spreadsheet if data in one area of the spreadsheet is changed.

(2bi)
-A simplex connection is a connection in which the data flows in only one direction, from the transmitter to the receiver. This type of connection is useful if the data do not need to flow in both directions (for example, from your computer to the printer or from the mouse to your computer.
-A half-duplex connection is a connection in which the data flows in one direction or the other, but not both at the same time. With this type of connection, each end of the connection transmits in turn.

-A full-duplex connection is a connection in whch d data flow in both directions simultaneously. Each end of the line can thus transmit & receive at the same time, which means that the bandwidth is divided in two for each direction of data transmission if the same transmission medium is used for both directions of transmission.

(2bii)
-Animation effects
-Slide show
-Sound
-Text

(2biii)
*One-to-one
*One-to-many

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

(3ai)
Relational database is a digital database whose organization is based on the relational model of data, as proposed by E. F. Codd in 1970.

(3aii)
-Tables
-forms
-queries

(3aiii)
A program file refers to sets of instructions that are put together to build up the application you will be using. Several files are linked between each other to see the application that pops in your screen.
A data file is basically the application’s feeding as it provides what is needed for your program to work and convert single pieces of data on understandable information.

(3bi)
Two way, real-time transmission of audio and video signals between specialized devices or computers at two or more locations via satellite (wireless) over a network such as a LAN or
internet.

(3bii)
1. No time constraint:
2. Dramatic travel saving:
3. Easy communication:
4. Increased productivity

(3ci)
(i) Reduced updating errors and increased consistency
(ii) Greater data integrity and independence from applications programs

(3cii)
(i) Write a problem statement for what you want to do
(ii) Write an outline, if it is complex

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(6a)
(i) Devices with high Processor is faster in accessing of data
(ii) When the memory size of the device is high, it quicks data access.
(iii) When the Content of the device is high, it slows down access of data
(iv) Virus-free device can access data quicly

===

(6a)
(i) Devices with high Processor is faster in accessing of data
(ii) When the memory size of the device is high, it quicks data access.
(iii) When the Content of the device is high, it slows down access of data
(iv) Virus-free device can access data quicly
(iii) Homepage: This is the main page of a website which gives detailed information on its owner and provides links to its other parts. Usually it is d first page seen by every visitor, but some sites (such as those of newspapers or portals) display a fresh page everyday, custom-tailored to the individual visitor’s preferences.
(iv) ISP: ISP simply means Internet Service Provider. It is a company that provides you with access to the Internet, usually for a fee. The most common ways to connect to an ISP are by using a phone line (dial-up) or broadband connection (cable or DSL).