9626_w21_qp_12
A paper of Information Technology, 9626
Questions:
12
Year:
2021
Paper:
1
Variant:
2
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1
A printer driver is a type of device driver. Tick the most accurate statement regarding printer drivers.  They are used to control the hard disk drive. They handle the translation of requests between the computer and the printer. One printer driver can control any printer. They ensure that there are no paper jams. Tick the most accurate statement regarding device drivers in general.  One device driver works with every operating system. Device drivers are extra hardware inside the device. Upon installation, a device driver detects and identifies the peripheral device. A device driver is needed to control the central processing unit of a computer. Explain the purpose of an operating system.
2. Hardware and software  →  2.2. System software
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2
A user interface is the method by which a user and a computer exchange information and instructions. Tick the most accurate statement referring to the use of colour in a user interface for users who suffer from colour blindness (colour vision deficiency).  It is good practice to use complementary colours such as red text on a green background. It is good practice to use text in small sizes and weights to emphasise it against a different‑coloured background. It is good practice to always use as many colours as possible when designing an interface. It is good practice to use a soft‑coloured background such as grey or cream to allow text of a different colour to be read more easily. Tick the most accurate statement referring to elements of a user interface.  Radio buttons only allow you to select one option from a list. A text box does not allow you to type numbers into it. Text should use the same font size whether the information is important or less important. It is a good idea to have a different font size for each word in a title. A developer has been asked to produce software. The software will allow a company’s employees to enter data. The user interface will be a graphical user interface (GUand must be easy to use. Describe four features of the layout of such a user interface.
2. Hardware and software  →  2.5. User interfaces
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3
A company secretary has been given a piece of paper which has the following data written on it. Johansen, Ingrid, 4578, 05/12/2020, 02493465782 Explain why these are regarded as just items of data. In your explanation give a possible context for the data and describe how this data then becomes information. Companies rely on the quality of the information that they use to make decisions. Describe how each of the following can affect the quality of the information. In your answers, give detail about the possible effects on companies. The age of the information. The level of detail in the information.
1. Data processing and information  →  1.1. Data and information
1. Data processing and information  →  1.2. Quality of information
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5
A company is investigating converting its paper files into computer data files. The company must choose between its existing staff entering the data manually or using an Optical Character Reader (OCR). Evaluate, by weighing up the advantages and disadvantages, the use of an OCR compared to manual data entry.
1. Data processing and information  →  1.5. Data processing
1. Data processing and information  →  1.1. Data and information
2. Hardware and software  →  2.4. Custom-written software and off-the-shelf software
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11
The sales director of a large company buys cars from an agent before issuing them to managers for use as company cars. She needs to keep records of all the agents she deals with and the details of each car. The records are stored as a relational database consisting of two tables. Agents ∞ Cars Agent_ID Car_ID Agent_first_name Number_of_doors Agent_second_name Cost Agent_ID A typical record from the Cars table would be: S8562T, 5, $39500, B345 Using the information given above, complete this part of the data dictionary for the Cars table. Attribute Data type Format Type of key Car_ID Evaluate, by weighing up the advantages and disadvantages, the use of a relational database rather than a flat file database in this situation. The sales director wishes to find the details of the agent who sold her the car with an ID of R4962Z. She has used a static parameter query to find these details. Explain why she should have used a dynamic parameter query.
10. Database and file concepts  →  10.1. Creating a database
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