Test your basic knowledge |

Usb Technology

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Transmissions starting at the host arrive the hub's _______ _______






2. USBD stands for?






3. Up to ___ devices can be attached to single USB port






4. EHCI stands for






5. The Host Controller executes the frame lists at ___ intervals






6. What contacts are longer on a USB connector?






7. _____________ is the hub port connector while the Series A plug is attached to the cable






8. When writing to a USB device - the host controller reads data from the host _________ __________






9. What was developed by and is licensed by Intel for USB 2.0?






10. Each connected USB device is assigned an address ___________ ______ to the USB system






11. SOF stands for ________ __________ __________-






12. _____________ is the hub port connector while the Series A plug is attached to the cable






13. The Series B receptacle is attached to the ___________






14. USB standards define a __________ __________ type to attach any USB device to a PC






15. USB registers are indirectly accessed by ___ _____ ________






16. Device attachment is automatically detected - Software automatically configured - Device available for immediate use. This describes ______ _______ technology






17. The maximum current a USB cable will deliver is _________






18. What is a USB endpoint address an example of?






19. The HCD schedules transactions by building a series of transaction lists called ________ _________






20. Hubs are critical in the ____________________ of USB devices






21. _____- data + data ground - List - in order - the purpose of each contact in a USB connector 1 - 2 - 3 - 4






22. USB has no requirement for __________ _________






23. HCD initiates transaction using both _______ ____ and _____






24. USB 1 supports a speed of up to __________






25. USB 1 supports a speed of up to __________






26. The ________________ is attached to the cable






27. Isochronous Transfer are used by applications that require a ______ _______ ______






28. The maximum length of a USB cable is __________






29. What conversion must happen before the data can be forwarded to root hub?






30. The polling rate of what type of transfer must be frequent enough that data is not lost but not so frequent as to waste bandwidth






31. USB 1.1 supports a speed of up to __________






32. In Bulk Transfers does a slow delivery result in lost or corrupted data?






33. What schedules USB transactions?






34. The hub controller contains ___________ read by software that identify the device as a hub






35. In basic USB Transaction - each transaction starts with a ______ ______






36. Up to ___ devices can be attached to single USB port






37. The ________________ is attached to the cable






38. How many contacts does each connector have?






39. USB 1.1 supports a speed of up to __________






40. USB devices enter a "suspend" state after ______________ of no bus activity






41. The maximum current a USB cable will deliver is _________






42. The maximum length of a USB cable is __________






43. The ________________ is attached to the cable






44. How many volts does the USB cable supply?






45. List - in order - the color of each USB cable: red ____ green black






46. Two key functions of USB System Software: _______ - Bandwidth Allocation - or Transaction scheduling






47. Bulk - Isochronous - Interrupt - and Control are types of what?






48. List - in order - the color of each USB cable: red ____ green black






49. Under XP - USB activity can be monitored and controlled by using ______________






50. In ther case of error - transactions are what?