WAEC 2019 Data Processing Answer Obj and Essay– May/June Expo

WAEC DATA PROCESSING ANSWER – 2019

Data Processing Obj
1-10: BDBABDDBDB

11-20: DABBADCCBB

21-30: CCABBAAADD

31-40: CDBAABAABB

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THEORY

(1a)
Teleconferencing is the use of telecommunication devices to hold discussions between participants in different locations.

(1b)
(i) For cash withdrawals
(ii) For deposits
(iii) For transfer of funds

(1ci)
Modem transmits digital data over communication lines. The conversion of the signals to/from analog to digital is the main purpose of a modem.

(1cii)
(i) Electronic Mails
(ii) Telephone messages
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(3a)
(i) They might have been experiencing difficulties in resource Sharing
(ii) They might have lost some crucial data, so they want to connect it for Data Protection and Redundancy
(iii) Ease of Administration
(iv) To maintain complex internal communications systems

(3b)
(i) Modem
(ii) Network Router
(iii) Network Hub
(iv) Network Switch

(3c)
(i) Modem – It modulates and demodulates the signal between the digital data of a computer and the analog signal of a telephone line.
(ii) Network Router – This is responsible for routing traffic from one to another network.
(iii) Network Hub – This is used to connect multiple network hosts also for data transfer.
(iv) Network Switch – It helps in filter and forwarding of data

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(5ai)
CD-ROM

(5aii)
I – CD-ROM technology
II – It switch on the CPU
III – Carefully store in a cool dry place.

(5b)
P – It displays video and graphical information generated by the computers graphics adapter allowing the user to interact with the computer.
Q – It carries out the instructions of a computer program.
R – It is used to position a cursor on a computer screen.
S – It is used to input characters and functions in the computer system by pressing button or keys.
T – It converts digital signals generated by the computer into analog signals which can be transmitted over a telephone or cable line and transforms incoming analog signals into their digital equivalent.

(5c)
(i) Click on your workspace while still holding down your mouse button drag to draw your shape and release button when done

_Solving More_

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(4ai)
Entities: are usually recognizable concepts, either concrete or abstract, such as person, places, things, or events which have relevance to the database

(4aii)
Attribute: refers to a database component, such a table. It also may refer to a database field. In other words Attributes describe the instances in the row of a database.

(4aiii)
Relationships is a common type of database whose data is stored in tables.

(4bi)
Cardinality refers to the uniqueness of data values contained in a column. In other words High cardinality means that the column contains a large percentage of totally unique values and Low cardinality means that the column contains a lot of “repeats” in its data range.

(4bii)
(i)one-to-one (1:1)
(ii)one-to-many (1:M)
(iii)many-to-many (M:N)

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6ai)
drop cap

6aii)
i)type the first word or sentence
ii)highlight the first character
iii)click on drop cap from insert menu

6aiii)
a)click enter after the second paragraph
b)click on colums from page layout on menu bar
c)click on two colums from more colums option
d)mark on line between box select from this point forward on apply to box click ok

6b)
i)shapes
ii)clip air

6ci)
i)launch the coreldraw application
ii)click on ellipse tool or F+ on Keybord and drag

6cii)
i)on the coreldraw enviroment
ii)click on text tool and click on the place to add the caption
iii)type “Happy Birthday” from the keyboard

6ciii)
i)highlight the caption
ii)click on fill tool
iii)select red colour from fill colour dialog box

6civ)
i)highlight the caption and click on text on the menu bar
ii)click on text to path
iii)click on the circular object with the arrow