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CAT Grade 11 Term 1 Week 2 LG
Computer Science (CSC1B)
University of Johannesburg
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REMOTE LEARNING EXERCISES/WORKSHEETS/ACTIVITIES
EXERCISES AND MEMORANDA
Learner Guide
SUBJECT: CAT
GRADE: 11
TOPIC/S:
SYSTEM TECHNOLOGY: HARDWARE Week: 2
Tel: (011) 355 0000 17 Simmonds Street, Johannesburg, 2001 ǀP. Box 7710, Johannesburg, 2000
QUESTIONS
1 Which one of the following does NOT contain a battery of
some type? A. Portable printer B. Wired keyboard C. UPS D. iPod
(1)
1 Which one of the following devices is classified NEITHER as an input device NOR as an output device? A. Barcode scanner B. Trackball C. Memory D. Earphone
(1)
1 The term ‘aspect ratio’ is a specification of ...
A. software. B. paper size. C. printers. D. monitors. (1)
2 Give ONE term for the following definitions:
2 A specification of a printer, measured in terms of a number of pages
(1)
2 A type of high-end camera designed for professional use (1) 2 A technology used in TV and computer screens (1) 2 A specification used to refer to print quality (1) 2 An example of a screen resolution (1) 2 A specification that indicates that a device supports wireless connections
(1)
3 State whether the following statement is TRUE or FALSE. If the statement is FALSE, change the underlined word to make the statement TRUE. 3 A VGA monitor cable transmits digital video and audio signals via a single cable.
(1)
3 It is best to use optical zoom on a digital camera to ensure that magnified images do not become blurry and pixelated.
(1)
Tel: (011) 355 0000 17 Simmonds Street, Johannesburg, 2001 ǀP. Box 7710, Johannesburg, 2000
6 Briefly explain what biometric input involves and give ONE practical example of where this type of input is used.
(2)
7 A monitor has the following specifications:
7 Name the specification given as 7 ms. (1) 7 What does the aspect ratio of a monitor describe, or specify? (1) 7 Give the name of a monitor interface or port, NOT listed in the specifications above, that transmits high-definition video and audio via a single cable.
(1)
8 Give ONE advantage of printing a document in draft mode. (1)
9 Give ONE reason why a person would decide to use an interactive whiteboard for a demonstration, rather than just a data projector.
(1)
10 When using a data projector for PowerPoint presentations, give the unit in which the brightness of the image projected is specified, or measured.
(1)
11 Give ONE green computing practice that can be followed, besides placing restrictions on how the printer is used?
(1)
12 Special devices are used on ocean buoys to collect weather data, instead of relying on human beings to go there to collect the data. Give ONE disadvantage of this way of collecting the data.
(1)
13 Name TWO input devices that are built into portable computing devices, but that are not usually built into desktop computers.
(2)
14 Biometric input is used mainly for security reasons.
What does biometric input typically measure, or capture?
(1)
15 Why is biometric security so difficult (or impossible) to defeat? (2)
16 Study the table below, which gives a partial listing of some of the requirements to install a certain software package, and answer the questions that follow.
Component Requirement NOTE Internet connection also required
Dual-core 1. RAM 2 GB, 4 GB Screen 1280 x 800 Hard drive 2 MB Name the screen specification that the requirement ‘1280 x 800’ refers to.
(1)
17 How could a digital copy of a paper document be obtained, without using a scanner?
(1)
18 Give TWO specifications of printers, besides resolution and speed. (2)
19 All the monitors have an HDMI port to connect to, and some of them Tel: (011) 355 0000 17 Simmonds Street, Johannesburg, 2001 ǀP. Box 7710, Johannesburg, 2000
7 ms 16:9 aspect ratio
have another (older, and once very common) type of video connector. 19. 1
Name the older type of connector referred to. (1)
19.
2
Give the TWO main advantages of HDMI over older types of connectors.
(2)
20 A POS system are installed at sales point (till).
20 Name TWO input devices commonly found in POS systems, besides a physical keyboard and pointing device.
(2)
20 Briefly explain the advantage of having a POS system installed, irrespective of the input method used.
(2)
21 An eye-tracking device will be of most use to a person who suffers from ...
(1)
22 If a data capturer has a visual disability, what type of keyboard could this person use?
(1)
Tel: (011) 355 0000 17 Simmonds Street, Johannesburg, 2001 ǀP. Box 7710, Johannesburg, 2000
CAT Grade 11 Term 1 Week 2 LG
Course: Computer Science (CSC1B)
University: University of Johannesburg
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