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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 · 5 marks

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1Multiple choice1 markPacket Switching Swap Remove

Identify what a router does with a data packet it receives.

[1 mark]
  • AGives the packet a number
  • BSends it on to the next router
  • CPuts the packets into order
  • DRebuilds the original file
Mark scheme
  • B Sends it on to the next router (1)
  • The only correct answer is B. The correct answer is sends it on to the next router.
  • A is not correct because a packet is given its number by the sending computer before it is sent
  • C is not correct because packets are put back into order by the receiving computer
  • D is not correct because the original file is rebuilt by the receiving computer once all the packets arrive
Example answers and how they were marked
Full marks1/1

B Sends it on to the next router

Why: Selected the action a router performs on a packet it receives (1).

No marks0/1

D Rebuilds the original file

Why: A near miss: rebuilding the file is a packet switching action, but it is done by the receiving computer, not by a router.

No marks0/1

A Gives the packet a number

Why: Misconception: packets are numbered by the sending computer, so a router does not add a packet number.

2Describe2 marksAddressing Swap Remove

Devices on a network use IP addresses.

Describe the purpose of an IP address.

[2 marks]
Mark scheme

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

  • Identifies a device on a network (1) so data can be sent to the correct device (1)
  • Gives a device a unique address (1) so packets can be routed to it across the internet (1)
  • Identifies a device on the internet (1) so it can send/receive data to/from other devices (1)

Allow 'unique' only where it is linked to identifying the device or to routing data; 'unique' on its own is not creditworthy.

Do not accept answers that only say it connects a device to the internet.

Do not accept a MAC address as the purpose of an IP address.

Do not accept domain names/web addresses (e.g. google.co.uk) as an IP address.

Example answers and how they were marked
Full marks2/2

An IP address uniquely identifies a device on a network so that data packets can be delivered to the correct destination.

Why: Linked point (1): identifies a device on a network; development (1): so data can be sent to the correct device.

Some marks1/2

It identifies a device on a network.

Why: Point only (1): identifies a device on a network; no linked development.

No marks0/2

It is a website address, such as google.co.uk, that the browser uses to find a web page.

Why: No creditworthy point: gives a domain name/web address, which the mark scheme says not to accept as an IP address.

3Describe2 marksWireless Connections Swap Remove

A school provides a wireless network for its students.

Describe how the range of a wireless network can affect its performance.

[2 marks]
Mark scheme

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

  • The further a device is from the wireless access point (1) the weaker the signal becomes (1)
  • A device outside the range of an access point (1) cannot connect to the network / loses its connection (1)
  • Walls and other obstacles reduce the range of the signal (1) so some areas of a building have a poor or no connection (1)
  • A wireless network with a greater range (1) allows devices to connect from further away (1)

Do not accept responses that only state that range is measured in metres or give a definition of range, as these do not describe an effect on performance.

Do not accept responses about the number of devices or interference unless they are linked to range.

Example answers and how they were marked
Full marks2/2

The further a device is from the access point, the weaker the signal becomes, so the device may lose its connection.

Why: Linked point: distance from the access point (1), developed by the weaker signal and lost connection (1).

Some marks1/2

Walls and other objects can reduce the range of a wireless signal.

Why: Point given: obstacles reduce range (1), but there is no development of the effect on performance.

No marks0/2

Range is the maximum distance a wireless signal can travel.

Why: A definition of range, not a description of its effect on performance, which the mark scheme does not accept.

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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