INFORMATION TECHNOLOGY TEST



INFORMATION TECHNOLOGY TEST

NAME: ______________________________________ GRADE 11 ___________________

SECTION 1 – 25 MARKS

Instructions: Answer ALL questions in the spaces provided.

1. Explain the difference between ‘data’ and ‘information’. (2 marks)

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2. Define the term ‘information processing’. (1 mark)

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3. List THREE forms of information processing. (3 marks)

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4. Distinguish between data validation and data verification. (2 marks)

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5. Give TWO advantages of information processing. (2 marks)

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Questions 6 and 7 are based on the following narrative:

Four persons went into a newly occupied housing scheme. They asked the residents many questions about fruit drinks. The responses were written down and forwarded to the fruit juice company which had contacted them. Three weeks later the juice company began selling some of the same juices the residents spoke about in the community.

6. Which word in the narrative implied that data was given? (1 mark)

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7. Who used the information derived from the data given? (1 mark)

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Questions 8 and 9 are based on the following narrative:

Information systems have brought about major changes in organizing and managing business enterprises. These involve automation, process control, scientific and commercial information processing.

8. Describe ‘automation’ (1 mark)

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9. Describe ONE service that is offered through commercial systems. (2 marks)

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Questions 10 and 11 are based on the following narrative:

A personal database is to be established for first form students in a Caribbean high school. Data to be stored include name, gender, date of birth, year of entry to school, age upon entering the school and height.

10. Select ONE data item to which a range check could be applied. (1 mark)

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11. Select TWO data items, stating reasons to which reasonableness checks could be applied.

(4 marks)

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SECTION 2 – 10 MARKS

Instructions: Circle the correct answer.

12. An input value has to be greater than 18 and less than 65 if a driving license is to be approved for issue. What type of input checking is appropriate?

A. Reasonableness check

B. Range check

C. Consistency check

D. Data type check

13. What is data validation?

A. Checking input data for errors before processing

B. To check data on source document before inputting

C. Checking outputs for errors before distributing

D. To check that data is sorted before processing

14. Data is checked visually before being stored at times. This is done in order to identify and correct typographical and transposition errors. What is the name of this error checking method?

A. validation

B. verification

C. typographical check

D. preliminary process check

15. What type of check is being employed by a utility company that compares the amount of electricity consumed by a customer during the current month against their previous month’s consumption?

A. range

B. data type

C. reasonableness

D. consistency

16. Typing ‘two’ instead of the numeral ‘2’ would be detected as an error by a _________ check.

A. consistency

B. reasonableness

C. range

D. data type

17. What is the BEST description for the process engaged in by two data entry clerks entering the same data independently to ensure correct data entry?

A. Range checking

B. Visual verification

C. Reasonableness checking

D. Double entry verification

18. Which of the following error refers to typing a word with two letters switched?

A. Syntax

B. Typographical

C. Semantic

D. Transposition

19. Two numbers were entered into the computer and the total calculated and displayed on the monitor. Which of the following statements is true?

A. The displayed total is data and the two numbers are information

B. The displayed total is information and the two numbers are also information

C. The displayed total is information and the two numbers are data

D. The displayed total is data and the two numbers are also data.

20. A bar-coded electricity bill generated by a light and power company and sent to a customer may be regarded as a ____________ document.

(i) human-readable

(ii) machine-readable

(iii) source

(iv) turnaround

A. (i) only

B. (ii) and (iii)

C. (iii) only

D. All the above

21. Which of the following statements is true?

A. Validation checks ensure that poor quality data is not used to produce information but verification does not

B. Verification ensures that data entered into a database form, a web form or a computer program conforms to the correct data type.

C. Validation ensures that data entered in the computer system matches that on the source documents.

D. Verification is performed by humans and in some cases an information processing system.

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GRAND TOTAL 30 MARKS

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