GCSE Digital Technology Unit 1 (Compulsory Core)

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Questions and Answers

What type of compression allows a file to be fully restored to its original state?

LOSSLESS (correct)

LOSSY

Data compression

File restoration

In a database, what is used to uniquely identify each record?

Form

Table

Query

Key field (correct)

What is used to locate specific data in a database with criteria?

Report

Form

Macro

Query (correct)

What type of validation check ensures that a field begins with a specific pattern?

Format check Signup and view all the answers

What is used to automate tasks in a database?

Macro Signup and view all the answers

What is used to add data to a database?

Form Signup and view all the answers

What is the smallest unit of digital data represented by either 0 or 1?

BYTE Signup and view all the answers

What is the data type for storing the student score of 51 in a Computing Module?

Integer Signup and view all the answers

How many binary digits are described by a BIT?

One Signup and view all the answers

What is the purpose of the instructions provided at the top of the page?

To provide guidance on how to answer questions Signup and view all the answers

What is the total mark for this paper?

90 Signup and view all the answers

What is the purpose of the figures in brackets printed down the right-hand side of the pages?

To indicate the marks awarded to each question or part question Signup and view all the answers

What is the primary purpose of an operating system in a computer system?

To manage the sharing of CPU time and resources needed by many users Signup and view all the answers

What is the term for a preformatted layout into which data can be added?

Template Signup and view all the answers

Which software group does defragmentation belong to?

Utility software Signup and view all the answers

What does the CPU stand for in relation to a computer system?

Central Processing Unit Signup and view all the answers

What is the term for a system that allows multiple users to access the same computer resources?

Multi-user Signup and view all the answers

What type of device is a microphone?

Input device Signup and view all the answers

What is the total amount of wages to be paid to the staff?

£2,015.00 Signup and view all the answers

What is the hourly rate of Mary Black?

£15.00 Signup and view all the answers

What is the Tax Rate used in the spreadsheet?

0.2 Signup and view all the answers

What is the formula used in cell C8?

=SUM(B3:B7) Signup and view all the answers

What is an absolute cell reference?

A reference to a cell that does not change when copied Signup and view all the answers

What is the purpose of the chart produced by Mia?

To provide information on staff wages Signup and view all the answers

What is a key principle of data processing regarding the rights of the data subject?

Data should be processed within the rights of the data subject Signup and view all the answers

What is the responsibility of the Information Commissioner regarding the Data Protection Act?

To enforce data protection laws and regulations Signup and view all the answers

What is a consequence of the increased use of digital technology on employment?

Job losses Signup and view all the answers

What is a disadvantage of online training?

Limited interaction with instructors Signup and view all the answers

What type of processing occurs when a computer system processes data all together during processor downtime?

Batch processing Signup and view all the answers

What is the purpose of backing up computer files?

To protect against data loss Signup and view all the answers

Study Notes

Data Protection

Data should be processed within the rights of the data subject.
Data should be kept accurate and up to date.

Data Protection Act Responsibilities

Information Commissioner:-responsible for one responsibility
Data Controller: responsible for one responsibility

Impact of Digital Technology on Employment

The increased use of digital technology has impacted on employment, specifically changing work patterns and job losses.

Online Learning

Online learning has created many advantages for learners who cannot attend formal classes.
Disadvantages of online training include:
- Two disadvantages (to be specified)

Processing

Processing is an activity carried out by the computer system.
Batch processing: processing data all together during processor downtime.
Real-time processing: processing data fast enough to influence the behavior of the next input.
Multi-user processing: processing that enables several users to use the system at once.

Backup and Compression

Backup: a copy of data saved in a separate location to prevent data loss.
Compression techniques:
- Lossless: a method of compression that allows the file to be fully restored to its original state.
- Lossy: a method of compression that discards data from the file, making it unrecoverable.

Database

Key features of a database include:
- Records: data stored in a database will be held in one or more records.
- Tables: each table will have a key field which is used to uniquely identify each record.
- Query: a query can be used with criteria to locate specific data in a database.
- Report: data can be displayed in a user-friendly format using a report.
- Form: a form can be used to add data to a database.
- Macro: some tasks in the database can be automated using a macro.

Validation Checks

Validation checks in a database include:
- Presence check: a check to ensure that a field is not left blank.
- Check for specific format: e.g. key field must begin with C followed by 5 numeric characters.

Computer Systems

CPU: Central Processing Unit, the brain of the computer system.
Operating system: manages the sharing of CPU time and resources needed by many users.
Resources managed by the operating system include:
- CPU time
- Memory

Software Groups

Defragmentation belongs to the system software group.

Input and Output Devices

Input devices:
- Microphone
- Example of use: recording audio
Output devices:
- High definition display
- Example of use: displaying high-quality images and videos

Spreadsheets

Formatting method used on cells A12 and B12: currency formatting.
Formula used in cell C8: (to be specified)
Formula used in cell D3: (to be specified)
Absolute cell reference: a reference to a cell that does not change when the formula is copied to another cell.
Formula used in cell E3: =IF(D3>=C12, "YES","NO")

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Description

Practice questions for the GCSE Digital Technology Unit 1 exam, covering the compulsory core syllabus. Test your knowledge and prepare for the exam. Time-limited, 1-hour quiz.