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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 markProtocols & Layers Swap Remove

The TCP/IP model is made up of four layers.

Identify the layer that is responsible for routing packets.

[1 mark]
  • AApplication
  • BInternet
  • CLink
  • DTransport
Mark scheme
  • B Internet (1)
  • The only correct answer is B. The correct answer is Internet.
  • A is not correct because the application layer creates data for applications such as web browsers and does not route packets
  • C is not correct because the link layer sends data over physical hardware using MAC addresses and does not route packets
  • D is not correct because the transport layer sets up the connection between two computers and reassembles the packets
Example answers and how they were marked
Full marks1/1

B Internet

Why: The internet layer is responsible for routing packets (1).

No marks0/1

A Application

Why: The application layer creates data for applications such as web browsers and does not route packets (0).

No marks0/1

C Link

Why: Confuses the link layer with the internet layer: the link layer sends data over physical hardware using MAC addresses and does not route packets (0).

2Multiple choice1 markAddressing Swap Remove

Data is sent across the internet in packets.

Identify the device that uses IP addresses to forward packets from one network to another.

[1 mark]
  • AHub
  • BNetwork interface card
  • CRouter
  • DSwitch
Mark scheme
  • C Router (1)
  • The only correct answer is C. The correct answer is router.
  • A is not correct because a hub sends data to every device on the network
  • B is not correct because a network interface card connects a device to a network
  • D is not correct because a switch forwards data within a single network using MAC addresses
Example answers and how they were marked
Full marks1/1

C Router

Why: Correct option (1): a router uses IP addresses to forward packets between networks.

No marks0/1

D Switch

Why: A switch forwards data within one network using MAC addresses, not between networks (mark scheme line D), so no mark.

No marks0/1

A Hub

Why: A hub only sends data to every device on the network (mark scheme line A), so no mark.

3Explain2 marksTopologies Swap Remove

A bus topology uses one main cable shared by all devices.

Explain why a bus topology can be a security risk.

[2 marks]
Mark scheme

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

  • All devices receive every data packet (1) because the main cable is shared by all nodes (1)
  • Data can be read by any device on the network (1) because there is no central switch to send it only to the destination (1)
  • A device can intercept/capture data not meant for it (1) because all transmissions travel along the same cable (1)
  • Any device can view all data on the cable (1) so data is not private/secure (1)

For both marks, the expansion must follow/associate with the statement.

Do not accept 'it is easy to hack' without saying data can be seen/intercepted on the shared cable.

Do not accept 'the central switch can be hacked' because a bus topology has no central switch.

Example answers and how they were marked
Full marks2/2

Any device on the bus can see all the data because every packet travels along the same shared cable.

Why: Linked point (1) and reason (1): data is visible to all devices because the cable is shared.

Some marks1/2

All devices can see the data.

Why: Awarded 1 mark for stating that all devices can see the data, but no linked reason about the shared cable is given.

No marks0/2

It is less secure because the central switch can be hacked.

Why: No credit: a bus topology has no central switch; the answer gives a misconception and no valid point about the shared cable.

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

Build a paper on this topic 36
Malware 18 questions Social Engineering 18 questions

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