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Basic USB Electronics MCQ

1. In data capacity measurements, one mebibyte is equal to _____.

2¹º bytes

2¹² bytes

2²° bytes

2³º bytes

Answer

Correct Answer: 2²° bytes

Note: This Question is unanswered, help us to find answer for this one

2. The overall character rate of synchronous serial communication is more because.

there are separate clock signals for the transmitter and the receiver

there is a common clock signal for the transmitter and the receiver

the start and stop bit can be eliminated in synchronous communication

the characters can come at any rate

Answer

Correct Answer: the start and stop bit can be eliminated in synchronous communication

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3. 16450 UART was basically used for

low speed communication

high speed communication

buffer data storage

None of the above

Answer

Correct Answer: high speed communication

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4. Which of the following is a connector specification for USB?

Series- A

Series- B

Mini- A

All of the above

Answer

Correct Answer: All of the above

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5. When music is recoded on a CD, it is sampled at the rate of _____.

20,000 times per second

30,050 times per second

44,100 times per second

88,400 times per second

Answer

Correct Answer: 44,100 times per second

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6. The Legacy free systems have.

only serial ports

only parallel ports

both serial and parallel ports

only a USB port

Answer

Correct Answer: only a USB port

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7. USB conforms to

Intel's plug and play (pnp) specifications

Intel's cold plugging

rebooting the system before use

All of the above

Answer

Correct Answer: Intel's plug and play (pnp) specifications

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8. DVD stands for a _____.

digital versatile disc

digital variable disc

data video disc

data versatile disc

Answer

Correct Answer: digital versatile disc

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9. RDRAMs are narrow channel devices. They transfer data at the rate of.

8 bit at a time

16 bit at a time

32 bit at a time

64 bit at a time

Answer

Correct Answer: 16 bit at a time

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10. The eight-bit ISA expansion slot resembles which of the following options?

The tongue and groove system

The nut and bolt system

The male and female connector

None of the above

Answer

Correct Answer: The tongue and groove system

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11. Which of the following memories can retain its contents without power?

DRAM

SRAM

Flash memory

All of the above

Answer

Correct Answer: Flash memory

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12. Devices which support USB standard are referred to as.

a medium storage class (MSC)

a mass storage class (MSC)

a mass save class (MSC)

a master save class (MSC)

Answer

Correct Answer: a mass storage class (MSC)

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13. How many devices can be connected to a single IEEE 1394 adapter card by way of daisy- chaining?

Answer

Correct Answer: 63

Note: This Question is unanswered, help us to find answer for this one

14. Which one of the following combinations is used to transfer information through the memory bus?

CPU and main memory

CPU and peripherals

Main memory and peripherals

All of the above

Answer

Correct Answer: CPU and main memory

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15. Which of the following buses is designed for high performance graphics and video support?

PCI

AGP

ISA

VESA

Answer

Correct Answer: AGP

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16. USB eliminates the need for.

special purpose ports

special purpose I/O cards

reconfiguring the system with each new device added

All of the above

Answer

Correct Answer: All of the above

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17. To which generation of development does the PCI express bus belong?

First generation

Second generation

Third generation

Fourth generation

Answer

Correct Answer: Third generation

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18. For Which of the following devices is Arial density used as a parameter of performance?

USB device

Hard disc

Flash memory

DRAM

Answer

Correct Answer: Hard disc

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19. By which of the following techniques is a standard DRAM accessed?

Refreshing

Paging

Sequencing

Filing

Answer

Correct Answer: Paging

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20. Which of the following is a compact disc format?

Red book

Yellow book

Green book

All of the above

Answer

Correct Answer: All of the above

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21. Which of the following topologies does USB 1.1 use?

The bus topology

The ring topology

The star topology

The tiered star topology

Answer

Correct Answer: The tiered star topology

Note: This Question is unanswered, help us to find answer for this one

22. In NRZI (Non return to zero invert) encoding, a "1" is represented by.

no change in the signal level

a change in the signal level

a high level

a low level

Answer

Correct Answer: no change in the signal level

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23. Which of the following wafers is used in the manufacturing of a compact disc (CD)?

Polycarbonate

Polyoxide

Polycalcium

PVC

Answer

Correct Answer: Polycarbonate

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24. In half duplex communication , data may travel.

in one direction

in both directions but not simultaneously

in both directions simultaneously

None of the above

Answer

Correct Answer: None of the above

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25. Which of the following is not a data encoding scheme used in magnetic storage?

Frequency modulation

Modified frequency modulation

Amplitude modulation

Run length limited

Answer

Correct Answer: Amplitude modulation

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26. By which of the following principles do all magnetic storage devices read and write data?

Electromagnetism

Induction

Ohm's law

Coulomb's law

Answer

Correct Answer: Electromagnetism

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27. Which one of the following is not a local bus?

VESA

PCI

AGP

ISA

Answer

Correct Answer: ISA

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28. USB 2.0 standard has a speed of _____.

12 Mbps

1.5 Mbps

480 Mbps

165 Mbps

Answer

Correct Answer: 480 Mbps

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29. The PCI bus is often called a _____

horse bus

lion bus

mezzanine bus

catalyst bus

Answer

Correct Answer: mezzanine bus

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30. USB allows up to _____ devices to run simultaneously on a single bus.

256

127

Answer

Correct Answer: 127

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31. Which of the following is a type of head used in hard discs?

Ferrite

Magnetic resistive (MR)

Thin film (TF)

All of the above

Answer

Correct Answer: All of the above

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32. The Intel 8250 is_____.

a synchronous communication controller

an asynchronous communication controller

A timer/counter

None of the above

Answer

Correct Answer: an asynchronous communication controller

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33. By which of the following methods can higher data densities in magnetic storage devices be achieved?

Longitudinal recording

Perpendicular recording

Straight recording

Plane recording

Answer

Correct Answer: Perpendicular recording

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34. How many individual RDRAM devices can a single rambus memory channel support?

Answer

Correct Answer: 32

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35. Which of the following encoding techniques is employed by USB?

Return to zero(RZ)

Non-return to zero invert(NRZI)

Return to zero invert(RZI)

Return to zero non-invert(RZNI)

Answer

Correct Answer: Non-return to zero invert(NRZI)

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36. By which of the following components is data retained in DRAM?

Inductors

Capacitors

Transistors

FET

Answer

Correct Answer: Capacitors

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37. Which of the following defines a nanosecond?

One billionth of a second

One billionth of a minute

One millionth of a second

One millionth of a minute

Answer

Correct Answer: One billionth of a second

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38. Which of the following is not a type of serial communication?

Simplex

Half-Duplex

Double–Duplex

Full–Duplex

Answer

Correct Answer: Double–Duplex

Note: This Question is unanswered, help us to find answer for this one

39. BISYNC is a byte controlled protocol. It is usually set up for ________ transmission.

half-duplex

simplex

full-duplex

None of the above

Answer

Correct Answer: half-duplex

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40. Another name for the processor bus is.

a back side bus

a front side bus

an all side bus

a two side bus

Answer

Correct Answer: a front side bus

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41. Which of the following is a technique to minimize the effects of errors on a disc?

Gross- internal code (GIC)

Cross interleave reed- solomon code(CIRC)

Crat – external peach code (CEPC)

None of the above

Answer

Correct Answer: Cross interleave reed- solomon code(CIRC)

Note: This Question is unanswered, help us to find answer for this one

42. DDR SDRAM stand for.

double data rate SDRAM

delay data rate SDRAM

daisy data rate SDRAM

dot data rate SDRAM

Answer

Correct Answer: double data rate SDRAM

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43. How much data can a typical CD hold?

650 Gbytes

650 Gibytes

650 Tbytes

650 Mibytes

Answer

Correct Answer: 650 Mibytes

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44. Which of the following memories requires a periodic refresh?

DRAM

SRAM

ROM

Flash memory

Answer

Correct Answer: DRAM

Note: This Question is unanswered, help us to find answer for this one

45. The keyboard in a PC communicates with the main system.

through a special serial data link

through a USB port

both a and b

through a parallel port

Answer

Correct Answer: both a and b

Note: This Question is unanswered, help us to find answer for this one

46. Which of the following can express a Cache memorys effectiveness?

Miss ratio

Hit ratio

Lock out ratio

Find ratio

Answer

Correct Answer: Hit ratio

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47. How many interrupt requests are required by USB?

A single interrupt request

Two interrupt requests

Three interrupt requests

Four interrupt requests

Answer

Correct Answer: A single interrupt request

Note: This Question is unanswered, help us to find answer for this one

48. In synchronization with which of the following does SDRAM, a type of DRAM, run?

CPU

Peripherals

Memory bus

Hard disc

Answer

Correct Answer: Memory bus

Note: This Question is unanswered, help us to find answer for this one

49. Which USB standard is called on-the-go standard?

USB 1.0

USB 1.1

USB 2.0

USB 2.2

Answer

Correct Answer: USB 2.0

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50. By which of the following names are USB and IEEE 1394 also called?

i .link

Fire wire

Hot wire

Both a and b

Answer

Correct Answer: Both a and b

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51. By which of the following is the Jitter problem, which accrues in I/O buses, defined?

It is the tendency for the signal to reach its target voltage and float above and below

It is the delay in clock signals

It is an electromagnetic interference between two wires in parallel communication

It is a type of crosstalk

Answer

Correct Answer: It is the tendency for the signal to reach its target voltage and float above and below

Note: This Question is unanswered, help us to find answer for this one

52. Signal skew problem is more evident in which of the following.

serial communication

parallel communication

Both a and b

Answer

Correct Answer: parallel communication

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53. On which of the following devices are pits and lands found?

Hard disc

USB device

All of the above

Answer

Correct Answer: CD

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54. Which of the following is a difference between a DVD and a CD?

A DVD's pits and lands are much larger than those on a CD

A DVD's pits and lands are much smaller than those on a CD

A DVD's pits are smaller and lands are longer than those on a CD

A DVD's pits are larger and lands are smaller than those on a CD

Answer

Correct Answer: A DVD's pits and lands are much smaller than those on a CD

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55. The initial implementations of IEEE 1394B require.

a nine wire interface

a three wire interface

a two wire interface

a one wire interface

Answer

Correct Answer: a nine wire interface

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56. The heart of any serial port is the.

UART chip

USART chip

Timer/counter chip

Oscillator ckt.

Answer

Correct Answer: USART chip

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57. IEEE 1284.

is a serial port standard

is a parallel port standard

can act both as a serial and a parallel port standard

None of the above

Answer

Correct Answer: is a parallel port standard

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58. Which of the following is a type of USB adapters?

USB- to- Ethernet

USB- to- keyboard

USB- to- SCSI

All of the above

Answer

Correct Answer: All of the above

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59. Which of the following ports uses a parallel architecture (parallel buses)?

USB

IEEE 1394

SCSI

All of the above

Answer

Correct Answer: SCSI

Note: This Question is unanswered, help us to find answer for this one

60. Eight bit ISA bus systems have.

8 interrupt request lines (IRQs)

16 IRQs

32 IRQs

64 IRQs

Answer

Correct Answer: 8 interrupt request lines (IRQs)

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61. Which of the following is a type of hard disc drive slider?

Mini

Micro

Pico

All of the above

Answer

Correct Answer: All of the above

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62. Which of the following is a CD file system format?

High sierra

Joliet

UDF

All of the above

Answer

Correct Answer: All of the above

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63. Which of the following is a technique used to encode data on a disc?

Frequency modulation (FM)

Eight- to- fourteen modulation(EFM)

One- to- eight modulation (OEM)

Phase modulation (PM)

Answer

Correct Answer: Eight- to- fourteen modulation(EFM)

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64. USB is similar to.

IEEE 1394

IEEE 844

IEEE 1243

IEEE 840

Answer

Correct Answer: IEEE 1394

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65. The transfer rate of I/O buses is also called.

the bandwidth of a bus

the Nyquist rate of a bus

the baud rate of a bus

the flow rate of a bus

Answer

Correct Answer: the bandwidth of a bus

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66. Which of the following connections is used by USB 1.1?

Two-wire

Three –wire

Four-wire

Six-wire

Answer

Correct Answer: Four-wire

Note: This Question is unanswered, help us to find answer for this one

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