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Learn: Network Performance - Bandwidth and Number of Devices
OCR GCSE J277 Computer Science specification
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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.
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.
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.
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.
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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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.
Which of the following best describes the effect of low bandwidth?
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Which of the following factors can reduce network performance? (Select all that apply)
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If a network has many connected devices, each device gets a smaller share of the total {{blank0}}.
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Match the items on the left with their correct pairs on the right
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