USB Electronics MCQs

USB Electronics MCQs

These USB Electronics multiple-choice questions and their answers will help you strengthen your grip on the subject of USB Electronics. You can prepare for an upcoming exam or job interview with these 70 USB Electronics MCQs.
So scroll down and start answering.

1: Which of the following connections is used by USB 1.1?

A.   Two-wire

B.   Three –wire

C.   Four-wire

D.   Six-wire 

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

A.   the bandwidth of a bus

B.   the Nyquist rate of a bus

C.   the baud rate of a bus

D.   the flow rate of a bus 

3: USB is similar to.

A.   IEEE 1394

B.   IEEE 844

C.   IEEE 1243

D.   IEEE 840 

4: Which of the following is a technique used to encode data on a disc?

A.   Frequency modulation (FM)

B.   Eight- to- fourteen modulation(EFM)

C.   One- to- eight modulation (OEM)

D.   Phase modulation (PM) 

5: Which of the following is a CD file system format?

A.   High sierra

B.   Joliet

C.   UDF

D.   All of the above 

6: Which of the following is a type of hard disc drive slider?

A.   Mini

B.   Micro

C.   Pico

D.   All of the above 

7: Eight bit ISA bus systems have.

A.   8 interrupt request lines (IRQs)

B.   16 IRQs

C.   32 IRQs

D.   64 IRQs 

8: Which of the following ports uses a parallel architecture (parallel buses)?

A.   USB

B.   IEEE 1394


D.   All of the above

9: Which of the following is a type of USB adapters?

A.   USB- to- Ethernet

B.   USB- to- keyboard

C.   USB- to- SCSI

D.   All of the above

10: IEEE 1284.

A.   is a serial port standard

B.   is a parallel port standard

C.   can act both as a serial and a parallel port standard

D.   None of the above 

11: The heart of any serial port is the.

A.   UART chip

B.   USART chip

C.   Timer/counter chip

D.   Oscillator ckt. 

12: The initial implementations of IEEE 1394B require.

A.   a nine wire interface

B.   a three wire interface

C.   a two wire interface

D.   a one wire interface 

13: Which of the following is a difference between a DVD and a CD?

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

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

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

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

14: On which of the following devices are pits and lands found?

A.   Hard disc

B.   USB device

C.   CD

D.   All of the above

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

A.   serial communication

B.   parallel communication

C.   Both a and b 

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

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

B.   It is the delay in clock signals

C.   It is an electromagnetic interference between two wires in parallel communication

D.   It is a type of crosstalk 

17: By which of the following names are USB and IEEE 1394 also called?

A.   i .link

B.   Fire wire

C.   Hot wire

D.   Both a and b 

18: Which USB standard is called on-the-go standard?

A.   USB 1.0

B.   USB 1.1

C.   USB 2.0

D.   USB 2.2 

19: In synchronization with which of the following does SDRAM, a type of DRAM, run?

A.   CPU

B.   Peripherals

C.   Memory bus

D.   Hard disc 

20: How many interrupt requests are required by USB?

A.   A single interrupt request

B.   Two interrupt requests

C.   Three interrupt requests

D.   Four interrupt requests 

21: Which of the following can express a Cache memorys effectiveness?

A.   Miss ratio

B.   Hit ratio

C.   Lock out ratio

D.   Find ratio

22: The keyboard in a PC communicates with the main system.

A.   through a special serial data link

B.   through a USB port

C.   both  a and b

D.   through a parallel port

23: Which of the following memories requires a periodic refresh?



C.   ROM

D.   Flash memory 

24: How much data can a typical CD hold?

A.   650 Gbytes

B.   650 Gibytes

C.   650 Tbytes

D.   650 Mibytes 

25: DDR SDRAM stand for.

A.   double data rate SDRAM

B.   delay data rate SDRAM

C.   daisy data rate SDRAM

D.   dot data rate SDRAM 

26: Which of the following is a technique to minimize the effects of errors on a disc?

A.   Gross- internal code (GIC)

B.   Cross interleave reed- solomon code(CIRC)

C.   Crat – external peach code (CEPC)

D.   None of the above

27: Another name for the processor bus is.

A.   a back side bus

B.   a front side bus

C.   an all side bus

D.   a two side bus

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

A.   half-duplex

B.   simplex

C.   full-duplex

D.   None of the above 

29: Which of the following is not a type of serial communication?

A.   Simplex

B.   Half-Duplex

C.   Double–Duplex

D.   Full–Duplex 

30: Which of the following defines a nanosecond?

A.   One billionth of a second

B.   One billionth of a minute

C.   One millionth of a second

D.   One millionth of a minute 

31: By which of the following components is data retained in DRAM?

A.   Inductors

B.   Capacitors

C.   Transistors

D.   FET 

32: Which of the following encoding techniques is employed by USB?

A.   Return to zero(RZ)

B.   Non-return to zero invert(NRZI)

C.   Return to zero invert(RZI)

D.   Return to zero non-invert(RZNI)

33: How many individual RDRAM devices can a single rambus memory channel support?

A.   8

B.   16

C.   32

D.   64 

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

A.   Longitudinal recording

B.   Perpendicular recording

C.   Straight recording

D.   Plane recording 

35: The Intel 8250 is_____.

A.   a synchronous communication controller

B.   an asynchronous communication controller

C.   A timer/counter

D.   None of the above 

36: Which of the following is a type of head used in hard discs?

A.   Ferrite

B.   Magnetic resistive (MR)

C.   Thin film (TF)

D.   All of the above

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

A.   256

B.   127

C.   64

D.   32

38: The PCI bus is often called a _____

A.   horse bus

B.   lion bus

C.   mezzanine bus

D.   catalyst bus 

39: USB 2.0 standard has a speed of _____.

A.   12 Mbps

B.   1.5 Mbps

C.   480 Mbps

D.   165 Mbps 

40: Which one of the following is not a local bus?


B.   PCI

C.   AGP

D.   ISA

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

A.   Electromagnetism

B.   Induction

C.   Ohm's law

D.   Coulomb's law

42: Which of the following is not a data encoding scheme used in magnetic storage?

A.   Frequency modulation

B.   Modified frequency modulation

C.   Amplitude modulation

D.   Run length limited

43: In half duplex communication , data may travel.

A.   in one direction

B.   in both directions  but not simultaneously

C.   in both directions simultaneously

D.   None of the above 

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

A.   Polycarbonate

B.   Polyoxide

C.   Polycalcium

D.   PVC

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

A.   no change in the signal level

B.   a change in the signal level

C.   a high level

D.   a low level

46: Which of the following topologies does USB 1.1 use?

A.   The bus topology

B.   The ring topology

C.   The star topology

D.   The tiered star topology

47: Which of the following is a compact disc format?

A.   Red book

B.   Yellow book

C.   Green book

D.   All of the above

48: By which of the following techniques is a standard DRAM accessed?

A.   Refreshing

B.   Paging

C.   Sequencing

D.   Filing 

49: For Which of the following devices is Arial density used as a parameter of performance?

A.   USB device

B.   Hard disc

C.   Flash memory

D.   DRAM 

50: To which generation of development does the PCI express bus belong?

A.   First generation

B.   Second generation

C.   Third generation

D.   Fourth generation