What is the maximum cable length to connect a device to an IEEE 1394a port?

Question

Options

• A12 meters
• B10 meters
• C4.5 meters
• D5 meters

• A
  3% (1)
• B
  12% (4)
• C
  82% (28)
• D
  3% (1)

Explanation

The maximum cable length to connect a device to an IEEE 1394a port is 4.5 meters. What is IEEE 1394? Institute of Electrical and Electronics Engineers (IEEE) 1394 is a standard for high-speed serial bus that provides enhanced PC connectivity for a wide range of devices. These devices include consumer audiovisual components, traditional PC storage devices, and handheld devices. IEEE 1394 is also known as Fire wire. Answer option D is incorrect. The maximum cable length to connect a device to USB 1.1 and USB 2.0 ports is 5 meters. Universal Serial Bus (USB) is a high speed bus standard developed by Compaq, IBM, DEC, Intel, Microsoft, NEC, and Northern Telecom. It provides the Plug and Play capability of Windows to external hardware devices. USB supports hot plugging, which means that a USB device can be installed or removed while the computer is running. A single USB port can be used to connect up to 127 peripheral devices, such as CD-ROM drives, tape drives, keyboards, scanners etc. USB 1.1 has a maximum data transfer rate of 12 Mbps, whereas USB 2.0 has a maximum data transfer rate of 480 Mbps. USB 2.0 is fully backward compatible with USB 1.1.

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