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Edexcel GCSE Computer Science (1CP2) Exam Questions

Build a practice paper from 693 exam-style questions, each with its mark scheme and example answers. Print it, or answer it on paper and then open the mark schemes. Or browse the questions by topic.

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3 questions · 4 marks

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1Multiple choice1 markWireless Connections Swap Remove

A wireless network can use the 2.4 GHz or 5 GHz frequency band.

Identify the advantage of using the 5 GHz band instead of the 2.4 GHz band.

[1 mark]
  • AGreater range
  • BHigher data transfer speed
  • CMore able to pass through walls
  • DUses less bandwidth
Mark scheme
  • B Higher data transfer speed (1)
  • The only correct answer is B. The correct answer is higher data transfer speed.
  • A is not correct because the 2.4 GHz band has the greater range
  • C is not correct because the 2.4 GHz band passes through walls more easily
  • D is not correct because the 5 GHz band does not use less bandwidth
Example answers and how they were marked
Full marks1/1

B Higher data transfer speed

Why: Correct advantage: 5 GHz gives higher data transfer rates (1).

No marks0/1

A Greater range

Why: Greater range is a feature of the 2.4 GHz band, not an advantage of 5 GHz; no mark.

No marks0/1

C More able to pass through walls

Why: 5 GHz signals are less able to pass through walls than 2.4 GHz signals; no mark.

2Short recall1 markWired Connections Swap Remove

Wired connections have characteristics that affect network performance.

State what is meant by the range of a wired network connection.

[1 mark]
Mark scheme

Award one mark for:

  • The maximum distance data/a signal can be transmitted before it becomes too weak to be received (1)

Allow 'how far a signal can travel'.

Do not accept the number of devices that can be connected to the network.

Do not accept the speed at which data is transmitted.

Do not accept bandwidth/the maximum capacity of a channel.

Do not accept latency/the delay between a signal being sent and received.

Example answers and how they were marked
Full marks1/1

The maximum distance a signal can be transmitted before it becomes too weak to be received.

Why: Gives the maximum distance a signal can be transmitted before it becomes too weak, which is the creditworthy point (1).

No marks0/1

The maximum capacity of the connection.

Why: This describes bandwidth, which the mark scheme says not to accept for range, so no mark.

No marks0/1

The delay between a signal being sent and received.

Why: This describes latency/delay, which the mark scheme says not to accept for range, so no mark.

3Describe2 marksWireless Connections Swap Remove

A network can use wired connections or wireless connections.

Describe why a wireless connection can have a higher latency than a wired connection.

[2 marks]
Mark scheme

Award up to two marks for a linked description such as:

  • Interference from other devices corrupts the wireless signal (1) so the data has to be resent, which increases the delay (1)
  • Devices on a wireless network take turns to use the same channel/frequency (1) so a device may have to wait for the channel to be free before it can transmit, which adds to the delay (1)
  • Data on a wireless connection must pass through the access point to reach the wired network (1) so the extra processing/conversion at the access point adds a delay (1)

Do not accept responses that only state that a wireless connection is slower/less reliable than a wired connection, without explaining how this adds latency.

Do not accept 'data is sent through the air' on its own, as this does not explain why latency is higher.

Do not accept responses about bandwidth or speed on their own.

Example answers and how they were marked
Full marks2/2

Interference from other devices can corrupt the wireless signal, so the data has to be resent, which increases the delay.

Why: Linked point: interference corrupts the signal (1), developed by the delay caused by resending the data (1).

Some marks1/2

Wireless signals can be corrupted by interference from other devices.

Why: The point that interference corrupts the wireless signal (1) is given, but there is no development of how this leads to a delay.

No marks0/2

Wireless is slower than a wired connection, so it has a higher latency.

Why: Only states that wireless is slower, without explaining how this adds latency, so it is not accepted.

Questions by topic

2.1 Binary

Build a paper on this topic 58
Adding Binary Numbers 6 questions Binary and Hexadecimal Basics 10 questions Binary Shifts 6 questions Binary to Denary Conversion 6 questions Binary to Hexadecimal Conversion 6 questions Denary to Binary Conversion 6 questions Denary to Hexadecimal Conversion 6 questions Denary to Negative Binary Conversion 6 questions Hexadecimal to Binary Conversion 6 questions

2.2 Data representation

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Character Sets 18 questions Images 19 questions Sound 19 questions

2.3 Data storage and compression

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Compression 18 questions Units & Conversion 6 questions

3.1 Hardware

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Embedded Systems 17 questions Fetch Decode Execute Cycle 15 questions Primary Memory 15 questions Secondary Memory 15 questions Stored Program Computers 15 questions

3.2 Software

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File Management 18 questions Memory Management 16 questions Peripheral Management 11 questions Process Management 12 questions Purpose & Function of Operating Systems 17 questions Software Basics 13 questions User Management 18 questions Utility Software 19 questions

3.3 Programming languages

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Low and High Level Languages 19 questions Translators 18 questions

4.1 Networks

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Addressing 16 questions LANs & WANs 16 questions Network Speed 5 questions Packet Switching 16 questions Protocols & Layers 17 questions The Internet 16 questions Topologies 17 questions Wired Connections 17 questions Wireless Connections 18 questions

4.2 Network security

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Network Security Risks 18 questions Preventing Network Security Risks 18 questions

5.1 Environmental

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E-waste 17 questions Manufacturing Technology 19 questions

5.2 Ethical and legal

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Data Protection Act 17 questions Impact of AI 18 questions Intellectual Property 18 questions Software Licences 18 questions

5.3 Cybersecurity

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Malware 18 questions Social Engineering 18 questions

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