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Test your basic knowledge |
Usb Technology
Start Test
Study First
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 1 supports a speed of up to __________
127
retried
Series A receptacle
1.5 Mb/s
2. _____- data + data ground - List - in order - the purpose of each contact in a USB connector 1 - 2 - 3 - 4
VCC
device
no
EHCI
3. USB is a ____ _______ method of adding peripherals to PC's
twisted pair
USB hot controller driver
Series A receptacle
low cost
4. What contacts are longer on a USB connector?
series B plug
power contacts
device manager
host attachment and detachement
5. How many contacts does each connector have?
parallel to serial
4
4.8 Gb/s
127
6. SOF stands for ________ __________ __________-
start of fram
root hub
low cost
3 ms
7. What contacts are longer on a USB connector?
power contacts
memory buffer
twisted pair
low cost
8. What schedules USB transactions?
device
hot plug
USB host controller driver
Basic USB Transaction
9. What provides attachment points for USB devices?
power contacts
USB device drivers
root hub
Device Configuration
10. Up to ___ devices can be attached to single USB port
USB host controller driver
controls
127
Control Transfer
11. USB 2 supports a speed of up to __________
5.0 VDC voltage
500 MA
twisted pair
480 Mb/s
12. _____- data + data ground - List - in order - the purpose of each contact in a USB connector 1 - 2 - 3 - 4
single connector
VCC
series B plug
memory buffer
13. 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
USB device drivers
Interrupt Transfer
device manager
frame lists
14. _____- data + data ground - List - in order - the purpose of each contact in a USB connector 1 - 2 - 3 - 4
VCC
4
parallel to serial
egisters memory
15. the IRP ______ ________ to or from a target USB device
EHCI
5 meters
type transfer transaction traffic
initiates transfers
16. In a Series A connector - one end of the cable is __________ attached to the device
system resources
permanently
12 Mb/s
127
17. The ________________ is attached to the cable
host attachment and detachement
VCC
error checking
series B plug
18. USB 1 supports a speed of up to __________
series B plug
1.5 Mb/s
device manager
Transfers
19. The maximum current a USB cable will deliver is _________
fireware descriptors
USB device endpoints
system resources
500 MA
20. USB 3 supports a speed of up to __________
Transfers
3 ms
4.8 Gb/s
USB hot controller driver
21. The USB cable must be shielded and _________ ______
twisted pair
USB host controller driver
5 meters
Basic USB Transaction
22. The hub controller contains ___________ read by software that identify the device as a hub
1.5 Mb/s
read transaction
fireware descriptors
5.0 VDC voltage
23. Device attachment is automatically detected - Software automatically configured - Device available for immediate use. This describes ______ _______ technology
Functional View
single connector
hot plug
memory buffer
24. Every transaction on the USB originates at the ____ ____
interfaces services
series B plug
root hub
Hardware & Software
25. USB registers are known as ____ _________ __________
USB device endpoints
device manager
Series A receptacle
Interrupt Transfer
26. The ________________ is attached to the cable
127
series B plug
EHCI
Enhanced Host Controller Interface
27. The root hub is located on the ___________
Interrupt Transfer
motherboard
USB hot controller driver
Device Configuration
28. The maximum current a USB cable will deliver is _________
host controller
USB hot controller driver
500 MA
device
29. Three operations Serial Bus Controllers using Device Manager under Windows will allow you to examine and /or control: _______ - USB Root Hub - USB Devices
USB Universal Host Controller
frame lists
known only
5.0 VDC voltage
30. In Bulk Transfers does a slow delivery result in lost or corrupted data?
4
no
start of fram
twisted pair
31. Under XP - USB activity can be monitored and controlled by using ______________
USB Universal Host Controller
Hardware & Software
usb driver
device manager
32. USB registers are known as ____ _________ __________
white
controls
USB device endpoints
5 meters
33. USB registers are indirectly accessed by ___ _____ ________
USB hot controller driver
Device Configuration
USB device drivers
4
34. What was developed by and is licensed by Intel for USB 2.0?
twisted pair
permanently
Enhanced Host Controller Interface
EHCI
35. 2 USB Data Transfers: __________ and System View
single connector
power contacts
EHCI
Functional View
36. What is a USB endpoint address an example of?
Basic USB Transaction
5 meters
VCC
power contacts
37. Device attachment is automatically detected - Software automatically configured - Device available for immediate use. This describes ______ _______ technology
5 meters
VCC
egisters memory
hot plug
38. USB 1.1 supports a speed of up to __________
12 Mb/s
500 MA
Enhanced Host Controller Interface
5.0 VDC voltage
39. List - in order - the color of each USB cable: red ____ green black
1.5 Mb/s
read transaction
device
white
40. USB 2 supports a speed of up to __________
5.0 VDC voltage
frame lists
USB device drivers
480 Mb/s
41. What contacts are longer on a USB connector?
480 Mb/s
power contacts
USB device endpoints
EHCI
42. USB has no requirement for __________ _________
4.8 Gb/s
USB device endpoints
forwarded
system resources
43. Up to ___ devices can be attached to single USB port
controls
initiates transfers
127
host controller
44. List - in order - the color of each USB cable: red ____ green black
white
3 ms
USB device drivers
device
45. USB is a ____ _______ method of adding peripherals to PC's
low cost
host attachment and detachement
memory buffer
constant data rate
46. Isochronous Transfer are used by applications that require a ______ _______ ______
constant data rate
Functional View
start of fram
retried
47. In a Series A connector - one end of the cable is __________ attached to the device
4
permanently
root hub
5 meters
48. _____ ___________ issue requests to the USB driver using I/O Request Packets (IRPs)
power ports recognizes status events
device drivers
Functional View
interfaces services
49. USB standards define a __________ __________ type to attach any USB device to a PC
system resources
480 Mb/s
power ports recognizes status events
single connector
50. USB has no requirement for __________ _________
host controller
controls
USB device drivers
system resources