Question: What is a pipe named at?
Answer: an endpoint

Question: Where do pipes correspond?
Answer: 1-to-1 to endpoints

Question: How many endpoints can a USB device have?
Answer: up to 32 endpoints

Question: If the direction of the data transfer is from the device to the host, what does the host send?
Answer: the host sends an IN packet

Question: What does a bi-directional endpoint accept?
Answer: both IN and OUT packets

Question: What is sent if the direction of the data transfer is from host to endpoint?
Answer: an OUT packet

Question: What is started when a USB is first connected to a host?
Answer: enumeration process

Question: What id the data rate determined during?
Answer: the reset signaling

Question: When is the device assigned a unique 7-bit address?
Answer: After reset

Question: What does the enumeration process start by doing?
Answer: sending a reset signal to the USB device

Question: What happens whenever a USB host is restarted?
Answer: the enumeration process is repeated for all connected devices.

Question: What do transaction translators do?
Answer: convert between high-speed USB 2.0 buses and full and low speed buses

Question: When does a USB 2.0 hub operate in high speed mode?
Answer: When a high-speed USB 2.0 hub is plugged into a high-speed USB host or hub

Question: What kind of devices do High speed USB 2.0's contain?
Answer: transaction translators

Question: What do USB's implement connections to?
Answer: storage devices

Question: What are the standards called that implement connections to storage devices?
Answer: the USB mass storage device class (MSC or UMS)

Question: What is the process of making a novel device look like a familiar device?
Answer: extension

Question: Why is the ability to boot write-locked SD cards with a USB adapter advantageous for?
Answer: maintaining the integrity and non-corruptible, pristine state of the booting medium.

Question: Since when can most computers boot from USB mass storage devices?
Answer: since mid-2004

Question: What is USB not intended for?
Answer: a primary bus for a computer's internal storage

Question: What is an important advantage of USB?
Answer: it is possible to install and remove devices without rebooting the computer

Question: Buses such as Parallel ATA fulfill what role in PC computers?
Answer: a computer's internal storage

Question: Several manufacturers offer what?
Answer: external portable USB hard disk drives

Question: What do external portable USB hard drive disks offer?
Answer: performance comparable to internal drives

Question: What is the most recent standard for external drive connectivity?
Answer: Thunderbolt

Question: What do the external drives typically include?
Answer: a "translating device"

Question: Media Transfer Protocol was designed by who?
Answer: Microsoft

Question: Why was Media Transfer Protocol designed?
Answer: to give higher-level access to a device's filesystem

Question: What was MTP originally designed for?
Answer: use with portable media players

Question: Why has MTP become the primary storage access protocol of the Android operating system?
Answer: MTP does not require exclusive access to the storage device the way UMS does

Question: What do older computers have to have in order for USB mice and keyboards to be used?
Answer: PS/2 connectors with the aid of a small USB-to-PS/2 adapter

Question: What is the hardware designed to detect in USB mice and keyboards?
Answer: whether it is connected to a USB or PS/2 port

Question: USB keyboards and mice may communicate using what?
Answer: appropriate protocol

Question: What connects PS/2 keyboards and mice to a USB port?
Answer: Converters

Question: What performs bidirectional data translation between two standards?
Answer: a microcontroller

Question: What is difficult to do with a USB plug?
Answer: to insert a USB plug into its receptacle incorrectly

Question: The USB specification states that the required USB icon must be what?
Answer: embossed on the "topside" of the USB plug

Question: How is the USB icon located to each receptacle?
Answer: adjacent

Question: Receptacles should be oriented to allow the icon on the plug to what?
Answer: to be visible during the mating process

Question: What do Type-A receptacles do on host devices?
Answer: supply power

Question: What do Type-b receptacles do on target devices?
Answer: draw power

Question: What do the receptacles prevent user from doing?
Answer: from accidentally connecting two USB power supplies to each other

Question: What networks do USB not support?
Answer: cyclic networks

Question: Standard connectors were designed to be what?
Answer: robust

Question: Why were standard connectors designed to be so robust?
Answer: the connectors would be used more frequently

Question: What as a drawback of previous connectors?
Answer: Many previous connector designs were fragile

Question: How are the electrical contents of a USB connector protected?
Answer: by an adjacent plastic tongue

Question: How is the entire connecting assembly of a USB connector protected?
Answer: by an enclosing metal sheath

Question: Where is the external metallic sheet connected?
Answer: typically connected to system ground

Question: What provides a degree of protection from interference with the USB signal?
Answer: This enclosure design

Question: This type of stage make-break timing allows for what?
Answer: electrically safe hot-swapping.

Question: What are the newer micro-USB receptacles designed for?
Answer: a minimum rated lifetime of 10,000 cycles of insertion

Question: What is the minimum rated lifetime for the standard USB receptacle?
Answer: 1,500

Question: After a leaf-spring was moved from jack to the plug, the most stressed part was found where?
Answer: on the cable side of the connection

Question: Why was the change made for the USB device?
Answer: so that the connector on the less expensive cable would bear the most wear

Question: What type of tolerances does the USB standard specify for compliant USB connectors?
Answer: loose tolerances

Question: Why were loose tolerances allowed for compliant USB connectors?
Answer: to minimize physical incompatibilities in connectors from different vendors

Question: How is a weakness addressed in some other connector standards?
Answer: the USB specification also defines limits to the size of a connecting device

Question: Due to size restrictions compliant devices must what?
Answer: fit within the size restrictions or support a compliant extension cable that does

Question: USB cables and device have only what on their ends?
Answer: plugs

Question: Hosts and devices only have what in terms of connecting to a USB device?
Answer: receptacles

Question: Devices usually have what type of receptacle?
Answer: one or another Type-B variety

Question: Hosts almost always have what type of receptacle?
Answer: Type-A receptacles

Question: What has been used to connect digital cameras. smartphones and other devices to tablet computers?
Answer: Various connectors

Question: What was standard for transferring data to and from the earlier type of smartphones?
Answer: The mini-B USB connector

Question: How large are both mini-A and mini-B plugs?
Answer: approximately 3 by 7 mm

Question: When were the mini-A connector and and the mini-AB receptacle connector depreceated?
Answer: 23 May 2007

Question: What is the micro connector designed for?
Answer: to reduce the mechanical wear on the device

Question: What is the easier-to-replace cable designed for?
Answer: to bear the mechanical wear of connection and disconnection

Question: What is the micro-plug rated for?
Answer: 10,000 connect-disconnect cycles

Question: In 2007 who endorsed micro-USB as the standard connector for data and power on mobile devices?
Answer: The cellular phone carrier group Open Mobile Terminal Platform