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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. In a Series A connector - one end of the cable is __________ attached to the device
USB device drivers
permanently
type transfer transaction traffic
low cost
2. Transmissions starting at the host arrive the hub's _______ _______
Control Transfer
type transfer transaction traffic
root hub
root port
3. USB standards define a __________ __________ type to attach any USB device to a PC
system resources
single connector
480 Mb/s
constant data rate
4. The USB cable must be shielded and _________ ______
host attachment and detachement
system resources
white
twisted pair
5. The hub controller _________ the powering and enabling of ports
controls
power contacts
Series A receptacle
root hubs hubs
6. How many contacts does each connector have?
4
USB Universal Host Controller
Enhanced Host Controller Interface
series B plug
7. USB 3 supports a speed of up to __________
no
1.5 Mb/s
Hardware & Software
4.8 Gb/s
8. USB 1 supports a speed of up to __________
EHCI
1.5 Mb/s
3 ms
VCC
9. What contacts are longer on a USB connector?
Series A receptacle
USB driver
host attachment and detachement
power contacts
10. _____ ___________ issue requests to the USB driver using I/O Request Packets (IRPs)
3 ms
480 Mb/s
Hardware & Software
device drivers
11. USB registers are known as ____ _________ __________
12 Mb/s
twisted pair
parallel to serial
USB device endpoints
12. What transfer is used to transfer specific requests to USB devices
Control Transfer
device
5 meters
1 ms
13. SOF stands for ________ __________ __________-
start of fram
Series A receptacle
host attachment and detachement
power contacts
14. List - in order - the color of each USB cable: red ____ green black
USB device drivers
low cost
Transfers
white
15. The ________________ is attached to the cable
series B plug
Series A receptacle
constant data rate
twisted pair
16. _____________ is the hub port connector while the Series A plug is attached to the cable
Series A receptacle
known only
hot plug
VCC
17. The maximum current a USB cable will deliver is _________
device
4.8 Gb/s
twisted pair
500 MA
18. The host controller builds a _______ ____________ when reading from a USB device
host controller
Series A receptacle
read transaction
permanently
19. USB 2 supports a speed of up to __________
480 Mb/s
low cost
Functional View
4.8 Gb/s
20. USB 3 supports a speed of up to __________
EHCI
480 Mb/s
4.8 Gb/s
series B plug
21. the USB driver provides __________ and ___________ for client software drivers
Functional View
interfaces services
host attachment and detachement
3 ms
22. USB 2 supports a speed of up to __________
packet transmission
500 MA
480 Mb/s
5.0 VDC voltage
23. The maximum length of a USB cable is __________
5 meters
low cost
127
constant data rate
24. Each connected USB device is assigned an address ___________ ______ to the USB system
1 ms
white
known only
packet transmission
25. How many contacts does each connector have?
4
5.0 VDC voltage
power ports recognizes status events
known only
26. Device attachment is automatically detected - Software automatically configured - Device available for immediate use. This describes ______ _______ technology
host attachment and detachement
5 meters
root hub
hot plug
27. The ________________ is attached to the cable
forwarded
packet transmission
series B plug
power contacts
28. The Host Controller executes the frame lists at ___ intervals
5 meters
low cost
type transfer transaction traffic
1 ms
29. USB devices contain _________ - which is another word for ____________
USB device drivers
egisters memory
root port
series B plug
30. USB 1.1 supports a speed of up to __________
127
upstream
12 Mb/s
root hubs hubs
31. _____________ is the hub port connector while the Series A plug is attached to the cable
12 Mb/s
Series A receptacle
upstream
EHCI
32. Device attachment is automatically detected - Software automatically configured - Device available for immediate use. This describes ______ _______ technology
5 meters
host controller
controller repeater
hot plug
33. USB is a ____ _______ method of adding peripherals to PC's
Enhanced Host Controller Interface
low cost
system resources
egisters memory
34. The characteristics of an USB device are detected by the _____ ______ during device configuration
127
USB device drivers
white
USB driver
35. A root hub consists of a hub _________ and hub __________
white
controller repeater
5.0 VDC voltage
root hubs hubs
36. Up to ___ devices can be attached to single USB port
device drivers
127
constant data rate
USB device endpoints
37. The USB cable must be shielded and _________ ______
5.0 VDC voltage
constant data rate
twisted pair
packet transmission
38. What was developed by and is licensed by Intel for USB 2.0?
single connector
Enhanced Host Controller Interface
Enhanced Host Controller Interface
EHCI
39. USB devices enter a "suspend" state after ______________ of no bus activity
memory buffer
3 ms
VCC
Transfers
40. What contacts are longer on a USB connector?
device drivers
power contacts
4.8 Gb/s
5 meters
41. How many volts does the USB cable supply?
power contacts
USB device endpoints
5.0 VDC voltage
5 meters
42. USB has no requirement for __________ _________
1.5 Mb/s
system resources
device manager
Basic USB Transaction
43. In a Series A connector - one end of the cable is __________ attached to the device
type transfer transaction traffic
EHCI
egisters memory
permanently
44. Hubs are critical in the ____________________ of USB devices
host attachment and detachement
low cost
Series A receptacle
no
45. What contacts are longer on a USB connector?
power contacts
series B plug
USB device drivers
5 meters
46. EHCI stands for
parallel to serial
Enhanced Host Controller Interface
Basic USB Transaction
low cost
47. The maximum length of a USB cable is __________
packet transmission
USB hot controller driver
1.5 Mb/s
5 meters
48. What are the USB system's two primary elements?
Hardware & Software
4.8 Gb/s
series B plug
error checking
49. 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
permanently
egisters memory
50. What is a USB endpoint address an example of?
Basic USB Transaction
power contacts
hot plug
12 Mb/s