SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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
4
root hub
permanently
5 meters
2. Bulk - Isochronous - Interrupt - and Control are types of what?
Transfers
500 MA
low cost
4
3. Each connected USB device is assigned an address ___________ ______ to the USB system
system resources
known only
4.8 Gb/s
root hubs hubs
4. USB devices contain _________ - which is another word for ____________
root hub
egisters memory
upstream
controller repeater
5. List - in order - the color of each USB cable: red ____ green black
system resources
Series A receptacle
white
no
6. Three operations Serial Bus Controllers using Device Manager under Windows will allow you to examine and /or control: _______ - USB Root Hub - USB Devices
EHCI
1.5 Mb/s
Device Configuration
USB Universal Host Controller
7. USB registers are indirectly accessed by ___ _____ ________
series B plug
USB device drivers
motherboard
root port
8. Transaction instructions generated by the ____ ____________ are forwarded to the root hub
white
EHCI
single connector
host controller
9. _____- data + data ground - List - in order - the purpose of each contact in a USB connector 1 - 2 - 3 - 4
no
VCC
Transfers
twisted pair
10. USB registers are indirectly accessed by ___ _____ ________
Basic USB Transaction
1.5 Mb/s
USB device drivers
memory buffer
11. When writing to a USB device - the host controller reads data from the host _________ __________
Series A receptacle
memory buffer
white
4
12. The Series B receptacle is attached to the ___________
low cost
VCC
packet transmission
device
13. USB registers are known as ____ _________ __________
Interrupt Transfer
5.0 VDC voltage
USB device endpoints
root hub
14. Device attachment is automatically detected - Software automatically configured - Device available for immediate use. This describes ______ _______ technology
hot plug
4
device
device drivers
15. Two key functions of USB System Software: _______ - Bandwidth Allocation - or Transaction scheduling
Device Configuration
VCC
root port
EHCI
16. The USB cable must be shielded and _________ ______
3 ms
white
twisted pair
5 meters
17. USB has no requirement for __________ _________
twisted pair
host attachment and detachement
system resources
5.0 VDC voltage
18. _____- data + data ground - List - in order - the purpose of each contact in a USB connector 1 - 2 - 3 - 4
VCC
USB host controller driver
480 Mb/s
low cost
19. The maximum length of a USB cable is __________
5 meters
12 Mb/s
hot plug
root hub
20. USB 3 supports a speed of up to __________
series B plug
USB driver
4.8 Gb/s
device manager
21. EHCI stands for
hot plug
Enhanced Host Controller Interface
USB device drivers
USB Universal Host Controller
22. USB is a ____ _______ method of adding peripherals to PC's
system resources
low cost
500 MA
initiates transfers
23. EHCI stands for
USB Universal Host Controller
1 ms
device manager
Enhanced Host Controller Interface
24. How many contacts does each connector have?
system resources
5.0 VDC voltage
4
VCC
25. USB 1 supports a speed of up to __________
USB device drivers
USB Universal Host Controller
1.5 Mb/s
VCC
26. USB registers are known as ____ _________ __________
packet transmission
EHCI
USB device endpoints
known only
27. In ther case of error - transactions are what?
Device Configuration
USB Universal Host Controller
hot plug
retried
28. What contacts are longer on a USB connector?
power contacts
initiates transfers
low cost
1.5 Mb/s
29. The maximum current a USB cable will deliver is _________
permanently
single connector
root hub
500 MA
30. USB standards define a __________ __________ type to attach any USB device to a PC
127
upstream
single connector
white
31. Device attachment is automatically detected - Software automatically configured - Device available for immediate use. This describes ______ _______ technology
device drivers
host controller
single connector
hot plug
32. The USB cable must be shielded and _________ ______
egisters memory
twisted pair
low cost
5 meters
33. What was developed by and is licensed by Intel for USB 2.0?
root hubs hubs
host attachment and detachement
series B plug
EHCI
34. The root hub controls _______ to USB ports - enables and disables _____ - _________ devices attached to ports and sets and reports _______ ______ associated with each port
egisters memory
hot plug
power ports recognizes status events
root hubs hubs
35. Under XP - USB activity can be monitored and controlled by using ______________
device manager
type transfer transaction traffic
system resources
device
36. The ________________ is attached to the cable
single connector
USB device endpoints
series B plug
power contacts
37. What schedules USB transactions?
controls
Device Configuration
permanently
USB host controller driver
38. USB 1 supports a speed of up to __________
type transfer transaction traffic
Control Transfer
initiates transfers
1.5 Mb/s
39. Up to ___ devices can be attached to single USB port
127
USB host controller driver
12 Mb/s
power contacts
40. USB standards define a __________ __________ type to attach any USB device to a PC
127
fireware descriptors
single connector
constant data rate
41. What contacts are longer on a USB connector?
127
twisted pair
power contacts
EHCI
42. _____ ___________ issue requests to the USB driver using I/O Request Packets (IRPs)
twisted pair
device
device drivers
USB Universal Host Controller
43. USB 2 supports a speed of up to __________
480 Mb/s
USB host controller driver
3 ms
12 Mb/s
44. The maximum length of a USB cable is __________
5 meters
memory buffer
fireware descriptors
motherboard
45. In a Series A connector - one end of the cable is __________ attached to the device
permanently
controller repeater
series B plug
hot plug
46. The ________________ is attached to the cable
host controller
USB device endpoints
series B plug
480 Mb/s
47. The Series B receptacle is attached to the ___________
power contacts
device
4
permanently
48. Each connected USB device is assigned an address ___________ ______ to the USB system
known only
host controller
1.5 Mb/s
1 ms
49. The hub controller contains ___________ read by software that identify the device as a hub
1 ms
power contacts
USB Universal Host Controller
fireware descriptors
50. Hubs are critical in the ____________________ of USB devices
host attachment and detachement
series B plug
known only
fireware descriptors