Wi-Fi Radio Frequency Bands and Channels
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Questions and Answers

Why are there different channels available within the 2.4 GHz and 5 GHz bands used in Wi-Fi technology?

  • To make it easier for devices to find available Wi-Fi networks.
  • To limit the number of devices that can connect to a Wi-Fi network.
  • To allow devices to communicate using slightly different frequencies and avoid interference. (correct)
  • To increase the speed of data transfer in Wi-Fi networks.
  • What is the significance of having multiple channels in the 2.4 GHz and 5 GHz bands of Wi-Fi technology?

  • To enable devices to communicate without any frequency differences.
  • To prevent signal interference by allowing devices to use different frequencies. (correct)
  • To increase the likelihood of signal interference between devices.
  • To reduce the range of Wi-Fi signals.
  • What determines the route that data packets take when sent across the internet?

  • The speed of the device sending the data packets.
  • The color of the cables through which the data packets pass.
  • The size of the data packets being sent.
  • The availability of routes. (correct)
  • What is the purpose of having a variety of protocols on the internet?

    <p>To ensure seamless communication between different devices and networks.</p> Signup and view all the answers

    What are MAC addresses and why are they essential in networking?

    <p>MAC addresses help identify network devices uniquely.</p> Signup and view all the answers

    What are IP addresses and why are they crucial in networking?

    <p>IP addresses uniquely identify devices on a network for proper communication.</p> Signup and view all the answers

    What is a disadvantage of using copper cables compared to fibre optic cables?

    <p>Copper cables transfer data much slower than fibre optic cables.</p> Signup and view all the answers

    What type of signals are used to transport data through copper cables?

    <p>Electrical signals</p> Signup and view all the answers

    Which type of cable is known for transferring data at the speed of light?

    <p>Fibre Optic cable</p> Signup and view all the answers

    In Wi-Fi technology, which type of wave is used to transmit data?

    <p>Radio Waves</p> Signup and view all the answers

    What does it mean when it is said that 'Wi-Fi is a standard'?

    <p>All Wi-Fi devices use the same standard technology allowing communication regardless of manufacturer.</p> Signup and view all the answers

    Which frequencies are commonly used in Wi-Fi technology for communication?

    <p>2.4 GHz and 5 GHz bands</p> Signup and view all the answers

    What is the primary purpose of a 'protocol' in the context of computer networking?

    <p>Ensuring all devices speak the same language for effective communication</p> Signup and view all the answers

    Which component does a data packet in computer networking NOT typically contain?

    <p>An IP address of the source computer</p> Signup and view all the answers

    Why is it important for all devices on the internet to adhere to the same set of protocols?

    <p>To allow effective communication between devices</p> Signup and view all the answers

    What purpose does the 'return address' serve in a data packet?

    <p>Requests retransmission if packet is corrupted</p> Signup and view all the answers

    In Wi-Fi technology, what is the significance of operating on different frequency bands like 2.4 GHz and 5 GHz?

    <p>Reducing interference and congestion in wireless networks</p> Signup and view all the answers

    What is the role of channels in Wi-Fi technology?

    <p>Separating different communication streams to prevent interference</p> Signup and view all the answers

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