11 mark
A law company currently use a Local Area Network (LAN) linked to a Wide Area Network (WAN).
Define what is meant by a Wide Area Network.
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Networks & Topologies (OCR GCSE Computer Science)
Exam Questions
1 hour20 questions2a2 marks
A university has buildings in two sites that are 5 miles apart.
Describe the difference between a LAN and a WAN.
2b2 marks
Site A has 4 classrooms. Site B has 2 classrooms. The network on each site between the classrooms is a star topology using a switch. The two sites are connected over the Internet.
Complete the network diagram for site A of the University.
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31 mark
Devices on a network do not currently have Internet access.
Identify one device that can be used to connect a home network to the Internet.
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42 marks
Naomi’s office has five computers connected into a Local Area Network (LAN). There is also one printer that all the devices can print to.
The LAN is set up as a mesh topology
Draw connections to show one way that the devices could be connected using a mesh topology.
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53 marks
An office has a LAN (Local Area Network). The office has four employees who each have a laptop.
The office also has one server and one networked printer.
The office is set up as a star network with a switch at the centre.
All devices are connected to the network using cables.
Draw the devices and connections in the office star network.
All devices must be clearly labelled.
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61 mark
A user enters a uniform resource locator (URL) into a web browser on one of the computers in the house.
A system is then used to find the IP address of the web server associated with the URL.
Name the system which matches URLs to IP addresses on the web.
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1a3 marks
A library has a LAN (Local Area Network).
The LAN allows access by both wired and wireless devices. Users have reported that the network sometimes runs very slowly.
Explain why the number of devices using the network at the same time can affect the performance of the network.
1b1 mark
Identify one other factor that can affect the performance of the network
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2a4 marks
Explain two advantages to a law company of storing their data in the Cloud.
Advantage 1 | |
|---|---|
Advantage 2 |
2b4 marks
Explain two disadvantages to a law company of storing their data in the Cloud.
Disadvantage 1 | |
|---|---|
Disadvantage 2 |
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33 marks
Hope has a network in her house. The main devices are shown in the diagram.
State whether Hope’s network is a LAN or a WAN.
Justify your choice.
LAN or WAN | |
|---|---|
Justification |
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43 marks
Hope has a network in her house. The main devices are shown in the diagram.
Explain why Hope’s network uses a peer-to-peer model and not a client-server model.
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52 marks
Describe the role of the switch in an office network.
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6a2 marks
The office introduces a WAP (Wireless Access Point) to allow network access to wireless devices.
The office manager has noticed that the performance of the network has recently decreased.
Describe how introducing wireless access could have slowed down the network.
6b2 marks
Identify two other factors that can affect the performance of a network.
1 | |
|---|---|
2 |
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73 marks
A house has computers in each room and a central router.
Every room allows both Ethernet and WiFi connections to the router.
Identify if the house network is a LAN (local area network) or a WAN (wide area network).
Justify your choice.
Network type | |
|---|---|
Justification |
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8a2 marks
Describe the purpose of the router in a home network.
8b2 marks
Identify two additional items of network hardware, apart from cables and a router, that may be used within the house network.
1 | |
|---|---|
2 |
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13 marks
A network has several routers.
Identify three tasks carried out by a router.
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22 marks
Give two reasons why a bakery may use a star network topology for their LAN.
Reason 1 | |
|---|---|
Reason 2 |
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34 marks
Site B has a higher network performance than site A.
Explain how each of the following can contribute to the performance of a network.
Wifi frequency | |
|---|---|
Interference | |
Number of concurrent users | |
Type of network traffic |
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46 marks
Hope’s files are stored on the cloud.
Describe the benefits and drawbacks to Hope of storing her files on the cloud.
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53 marks
Computer 1 enters the URL www.ocr.org.uk into a web browser. This is then converted into the IP address of the webserver that hosts the website.
Explain how the URL www.ocr.org.uk is converted into the IP address
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65 marks
The IP address 192.149.119.226 is linked to the website with a URL of https://www.ocr.org.uk
When https://www.ocr.org.uk is entered into a browser, the website homepage is loaded.
Describe the relationship between the website URL (https://www.ocr.org.uk), the IP address and the webserver.
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