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21.
You want to plug a keyboard into the back of a computer. You know that you need to plug the keyboard cable into a PS/2 port. Which style of port is the PS/2?
  • A.
    RJ-11
  • B.
    DE9
  • C.
    DIN 5
  • D.
    Mini-DIN 6
  • Answer & Explanation
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Answer : [D]
Explanation :
A PS/2 port is also known as a mini-DIN 6 connector.
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22.
What is the maximum speed of USB 2.0 in Mbps?
  • A.
    1.5
  • B.
    12
  • C.
    60
  • D.
    480
  • Answer & Explanation
  • Report
Answer : [D]
Explanation :
The USB 2.0 spec provides for a maximum speed of 480 megabits per second (Mbps— not megabytes per second, or MBps).
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23.
Which of the following standards are specified by IEEE 1284? (Choose two.)
  • A.
    SPP
  • B.
    RS-232
  • C.
    EPP
  • D.
    ECP
  • E.
    FireWire
  • F.
    USB
  • Answer & Explanation
  • Report
Answer : [C,D]
Explanation :
Bidirectional parallel ports can both transmit and receive data. EPP and ECP are IEEE 1284 standards that were designed to transfer data at higher speeds in both directions so that devices could return status information to the system. The standard parallel port only transmits data out of the computer. It cannot receive data. FireWire is specified by IEEE 1394. IEEE 1284 does not specify serial protocols, such as RS-232 and USB.
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24.
What peripheral port type was originally developed by Apple and is currently regarded as the optimal interface for digital video transfers?
  • A.
    DVD
  • B.
    USB 2.0
  • C.
    IEEE 1394
  • D.
    IEEE 1284
  • Answer & Explanation
  • Report
Answer : [C]
Explanation :
The IEEE 1394 standard provides for greater data transfer speeds, increased power, and the ability to send memory addresses as well as data through a serial port. USB 3.0 proves to threaten more competition in these areas, but USB 2.0 could not compare to the overall performance of IEEE 1394.
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25.
What peripheral port type is expandable using a hub, operates at 1.5MBps, and is used to connect various devices (from printers to cameras) to PCs?
  • A.
    DVD 1.0
  • B.
    USB 1.1
  • C.
    IEEE 1394
  • D.
    IEEE 1284
  • Answer & Explanation
  • Report
Answer : [B]
Explanation :
USB hubs are used to connect multiple peripherals to one computer through a single port. They support data transfer rates as high as 12Mbps, or 1.5MBps (for USB 1.1, which is the option listed here).
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