Pearson BTEC National IT (AAQ)

Transmitting Data: revision quiz and key terms

Free practice for Transmitting Data in Pearson BTEC National IT (AAQ). It covers: wired and wireless connectivity, network topologies and types, protocols for transmitting data, bandwidth, latency, compression and codecs. Try the questions, then check the key terms.

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Question 1 · Multiple choice

Why are protocols needed for data transmission?

Question 2 · True or false?

Copper cables can suffer from electromagnetic interference.

Question 3 · Multiple choice

In a bus topology, what happens if the main backbone cable breaks?

Question 4 · True or false?

Satellite internet has lower latency than fibre broadband.

Question 5 · Multiple choice

Which type of compression should be used for a program's executable file?

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Key terms for Transmitting Data

Bandwidth: The maximum amount of data a connection can carry per second.
Lossy compression: Reduces file size by permanently discarding data that people are unlikely to notice.
NFC: Very short-range wireless communication (a few centimetres) used for contactless payments.
Packet switching: Splitting data into packets that may travel by different routes and are reassembled at the destination.
Ring topology: Each device connects to two others, forming a loop that data travels around.
Twisted pair cable: Copper cable with wires wound around each other to reduce interference; cheap and common in LANs.
WAN: A network covering a large geographical area, often using leased or third-party lines.
Wireless access point: Allows Wi-Fi devices to connect to a wired network.

What Transmitting Data covers

In RADevo this topic has a full topic test and a focused quiz for each part:

B1 Connectivity: Wired and wireless connections, their features and uses, protocols for transmitting data, packet switching, personal area networks and tethering.
B2 Networks: Network types, client-server and peer-to-peer, topologies, network components, virtual and cloud-based networks, and factors affecting performance.
B3 Issues Relating to Transmission of Data: Security, bandwidth and latency, factors affecting speed, lossy and lossless compression, codecs, streaming and buffering, and simple transfer rate calculations.

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