Step-by-Step Lesson

Learn: Network Performance - Bandwidth and Number of Devices

OCR GCSE J277 Computer Science specification

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Steps in this lesson (13)

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Welcome!You've already learned about what networks are and the differences between LANs and WANs. Now, let's explore how network performance is affected by bandwidth and the number of devices.

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What is Bandwidth?Bandwidth is the maximum amount of data that can be transmitted across a network in a given time, usually measured in megabits per second (Mbps). It's like the width of a motorway: the wider it is, the more cars (data) can pass through at once.

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Multiple ChoiceInteractive

What is bandwidth?

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How Does Bandwidth Affect Network Performance?Higher bandwidth allows more data to be transferred at once, making the network faster and more responsive. If bandwidth is too low, the network can become slow, especially when many devices are active.

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What Happens with Too Many Devices?When too many devices are connected to a network, they share the available bandwidth. This can slow down the connection for everyone, as each device gets a smaller share of the total bandwidth.

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Fill in the BlankInteractive

The performance of a network decreases when too many {{blank0}} are connected and share the available {{blank1}}.

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Other Factors Affecting Network PerformanceBesides bandwidth and the number of devices, other factors like signal strength, interference (e.g., walls blocking Wi-Fi), and the type of network hardware can also play a role.

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MatchingInteractive

Match the items on the left with their correct pairs on the right

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Review Time!Great work! You've learned how bandwidth and the number of devices affect network performance. Now, let's test your understanding with a few questions.

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Multiple ChoiceInteractive

Which of the following best describes the effect of low bandwidth?

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Multi-SelectInteractive

Which of the following factors can reduce network performance? (Select all that apply)

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Fill in the BlankInteractive

If a network has many connected devices, each device gets a smaller share of the total {{blank0}}.

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MatchingInteractive

Match the items on the left with their correct pairs on the right

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