Exam (elaborations)
EXTRON-A/V USB CERTIFICATION EXAM QUESTIONS AND ANSWERS
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EXTRON-A/V USB CERTIFICATION EXAM QUESTIONS AND ANSWERS...
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HostTypically a computer with downstream USB ports initiates the communication
with the attached peripheral devices.
Peripheral
Devices that communicate with upstream hosts. These are normally storage
drives, cameras, printers, scanners, webcams, and Human Interface Devices
(HIDs), which include everything from keyboards to mice.
Brainpower Read More Bus
A plug or bundle of wires within a computer or device that provides data
transport and communication.
Hub
Extends the number of USB ports and enables host to communicate with
multiple peripheral devices. Can be stand-alone or integrated into a device such
as computer, monitor, and keyboard.
Cable
Interconnects peripheral devices, host, and hubs.
Twisted pair cables
USB 3.0 adds for duplex communication.
Type-A
A standard, universal connector that is on most computers and USB devices.
Type-B
, An upstream interface that is used to receive data or power on peripheral
devices such as printers.
Mini Connectors
Were designed to carry data and power for smaller devices. These are USB 2.0
capable and further support USB On-The-Go, that allows mobile devices and
other peripherals to act as a USB host.
Micro Connectors
USB 2.0 capable. Replaced the Mini connectors. These are slimmer interfaces
that easily integrate into thinner devices such as cellphones, GPS units, and
digital cameras.
USB-C
Reversible interface design, plug in either side into USB 3.2 Gen 2 host
products. Able to carry USB 1.1, USB 2.0, USB 3.0, USB 3.1 signals and
couple with legacy connectors.
Thunderbolt 3
Function as USB-C cables, either does use the same uniform connector type.
Much higher performance than that of USB-C, operating at 40 Gbps while that
of USB-C functions at 20 Gbps.
Alternate mode
It repurposes some of the physical wires in the USB-C cable to carry the other
non-USB signals of audio and video data, such as DisplayPort.
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