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. USB devices enter a "suspend" state after ______________ of no bus activity
Basic USB Transaction
series B plug
1.5 Mb/s
3 ms
2. 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
single connector
Interrupt Transfer
series B plug
root hub
3. Transmissions starting at the host arrive the hub's _______ _______
parallel to serial
system resources
host attachment and detachement
root port
4. What was developed by and is licensed by Intel for USB 2.0?
single connector
single connector
EHCI
500 MA
5. EHCI stands for
error checking
127
Enhanced Host Controller Interface
root hubs hubs
6. What was developed by and is licensed by Intel for USB 2.0?
5 meters
EHCI
USB device drivers
127
7. USBD stands for?
1.5 Mb/s
host controller
root port
usb driver
8. Up to ___ devices can be attached to single USB port
type transfer transaction traffic
Series A receptacle
127
system resources
9. What conversion must happen before the data can be forwarded to root hub?
twisted pair
USB Universal Host Controller
permanently
parallel to serial
10. Up to ___ devices can be attached to single USB port
start of fram
USB hot controller driver
127
single connector
11. What transfer is used to transfer specific requests to USB devices
Control Transfer
egisters memory
permanently
low cost
12. What contacts are longer on a USB connector?
power contacts
permanently
egisters memory
root hub
13. USB 1.1 supports a speed of up to __________
EHCI
12 Mb/s
single connector
usb driver
14. EHCI stands for
Enhanced Host Controller Interface
single connector
EHCI
5.0 VDC voltage
15. What schedules USB transactions?
fireware descriptors
USB host controller driver
Series A receptacle
VCC
16. The hub controller _________ the powering and enabling of ports
5 meters
controls
controller repeater
EHCI
17. USB is a ____ _______ method of adding peripherals to PC's
low cost
white
forwarded
hot plug
18. Device attachment is automatically detected - Software automatically configured - Device available for immediate use. This describes ______ _______ technology
hot plug
4.8 Gb/s
5.0 VDC voltage
device manager
19. Up to ___ devices can be attached to single USB port
127
Functional View
Device Configuration
permanently
20. USB standards define a __________ __________ type to attach any USB device to a PC
single connector
constant data rate
twisted pair
white
21. USB system software consists of USBD and ___ _____ _________ ________
type transfer transaction traffic
USB hot controller driver
no
power contacts
22. USB devices contain _________ - which is another word for ____________
system resources
egisters memory
USB device drivers
Functional View
23. List - in order - the color of each USB cable: red ____ green black
power ports recognizes status events
USB driver
127
white
24. When the target device responds to a host initiated transaction - it must transmit a response ________
USB driver
Series A receptacle
500 MA
upstream
25. The host controller builds a _______ ____________ when reading from a USB device
read transaction
upstream
white
permanently
26. List - in order - the color of each USB cable: red ____ green black
5.0 VDC voltage
retried
white
parallel to serial
27. USB 1.1 supports a speed of up to __________
1.5 Mb/s
low cost
12 Mb/s
Series A receptacle
28. How many contacts does each connector have?
4
twisted pair
root port
upstream
29. USB root hub and the target devices perform __________ ___________ during each transaction
12 Mb/s
series B plug
error checking
EHCI
30. How many contacts does each connector have?
Control Transfer
root port
4
twisted pair
31. A root hub consists of a hub _________ and hub __________
Interrupt Transfer
controller repeater
500 MA
power contacts
32. The Series B receptacle is attached to the ___________
127
device
fireware descriptors
root port
33. In Bulk Transfers does a slow delivery result in lost or corrupted data?
no
permanently
USB device drivers
device
34. List - in order - the color of each USB cable: red ____ green black
Functional View
VCC
egisters memory
white
35. The Series B receptacle is attached to the ___________
device
USB device endpoints
Functional View
Control Transfer
36. The USB cable must be shielded and _________ ______
retried
twisted pair
white
single connector
37. When writing to a USB device - the host controller reads data from the host _________ __________
127
root hub
memory buffer
power ports recognizes status events
38. USB is a ____ _______ method of adding peripherals to PC's
low cost
twisted pair
system resources
power contacts
39. USB devices contain _________ - which is another word for ____________
permanently
root hubs hubs
egisters memory
1.5 Mb/s
40. Each connected USB device is assigned an address ___________ ______ to the USB system
fireware descriptors
known only
white
3 ms
41. Bulk - Isochronous - Interrupt - and Control are types of what?
Transfers
5 meters
5.0 VDC voltage
fireware descriptors
42. Under XP - USB activity can be monitored and controlled by using ______________
host attachment and detachement
root hub
4
device manager
43. In ther case of error - transactions are what?
4.8 Gb/s
5.0 VDC voltage
error checking
retried
44. What contacts are longer on a USB connector?
5 meters
USB device drivers
power contacts
host controller
45. Isochronous Transfer are used by applications that require a ______ _______ ______
Enhanced Host Controller Interface
constant data rate
white
read transaction
46. USB has no requirement for __________ _________
device drivers
white
system resources
1 ms
47. The ________________ is attached to the cable
device
series B plug
interfaces services
USB Universal Host Controller
48. 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
USB device endpoints
low cost
4.8 Gb/s
49. How many volts does the USB cable supply?
known only
controller repeater
5.0 VDC voltage
1.5 Mb/s
50. USB 1 supports a speed of up to __________
series B plug
power contacts
hot plug
1.5 Mb/s