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. USB registers are indirectly accessed by ___ _____ ________






2. USB 2 supports a speed of up to __________






3. EHCI stands for






4. What contacts are longer on a USB connector?






5. The maximum length of a USB cable is __________






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






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






8. How many contacts does each connector have?






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






10. USB root hub and the target devices perform __________ ___________ during each transaction






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






12. USB has no requirement for __________ _________






13. USB is a ____ _______ method of adding peripherals to PC's






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






15. What provides attachment points for USB devices?






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






17. SOF stands for ________ __________ __________-






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






19. Every transaction on the USB originates at the ____ ____






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






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






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






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






24. USB 1 supports a speed of up to __________






25. The ________________ is attached to the cable






26. The ________________ is attached to the cable






27. The hub controller _________ the powering and enabling of ports






28. Three operations Serial Bus Controllers using Device Manager under Windows will allow you to examine and /or control: _______ - USB Root Hub - USB Devices






29. USB 2 supports a speed of up to __________






30. HCD scheduling depends on ___ of transaction - ______ requirements of the device and _______ ______ of other USB devices






31. USB registers are indirectly accessed by ___ _____ ________






32. Transaction instructions generated by the ____ ____________ are forwarded to the root hub






33. USB 3 supports a speed of up to __________






34. In a Series A connector - one end of the cable is __________ attached to the device






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






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






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






38. USB 3 supports a speed of up to __________






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






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






41. The Series B receptacle is attached to the ___________






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






43. the USB driver provides __________ and ___________ for client software drivers






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






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






46. What are the USB system's two primary elements?






47. USBD stands for?






48. USB system software consists of USBD and ___ _____ _________ ________






49. How many contacts does each connector have?






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