Deck 4: ISA, Communication Modes, Wlan, Serial Protocols, ARM Processors, and Real-Time Systems

Question 1

What is the full form of ISA?

A)Industry Standard Architecture
B)International American Standard
C)International Standard Architecture
D)None of the mentioned

Answer 1

Industry Standard Architecture

Question 2

The disadvantage of using a parallel mode of communication is ______

A)All of the mentioned
B)Leads to erroneous data transfer
C)Security of data
D)It is costly

Answer 2

It is costly

Question 3

The transformation between the Parallel and serial ports is done with the help of ______

A)Flip flops
B)Logic circuits
C)Shift registers
D)None of the mentioned

Answer 3

Shift registers

Question 4

What WLAN device provides communications management services to wireless workstations?

A)Access Point
B)Antenna
C)Network Adaptor
D)Repeater

Question 5

RS-232, RS-449, RS-530, V-24, and X-21 are examples of?

A)standards for various types of transmission channels.
B)standards for interfaces between terminals and modems.
C)two methods of error detection and correction
D)standards for end-to-end performance of data communication systems.

Question 6

Many cables have "RS-232" connectors with some wires crossed or connected to each other because….

A)there are various RS-232 standards.
B)asynchronous modem reverses the direction of transmitted and received data from the standard.
C)accept commands from the terminals Via Rs-232 interface.
D)many computers and peripherals use RS-232 serial interfaces, but not as DTE-to-DCE

Question 7

Which protocol standard of serial communication specify the bi-directional and half-duplex form of data transmission by allowing various numbers of drivers and receivers in bus configuration?

A)RS232
B)RS2485
C)RS422
D)RS423

Question 8

What is the maximum device handling capacity of serial standard protocol RS485 in terms of drivers and receivers on a single line?

A)8
B)10
C)16
D)32

Question 9

The main importance of ARM micro-processors is providing operation with ______

A)Low cost and low power consumption
B)Higher degree of multi-tasking
C)Lower error or glitches
D)Efficient memory management

Question 10

The address system supported by ARM systems is/are ___________

A)Little Endian
B)Big Endian
C)X-Little Endian
D)both A &B Little & Big Endian

Question 11

Which of the following is the type of SPI controller?

A)Queued SPI
B)Microwire
C)Microwire/plus
D)Quad SPI

Question 12

How buffers are enabled in the parallel ports?

A)by the data register
B)by data direction register
C)by individual control register
D)by data and individual control register

Question 13

Which peripheral port provides the FASTEST throughput to laser printers?

A)RS-232
B)SCSI
C)Parallel
D)Serial

Question 14

Advantages of SPI are…..

A)It\s faster than asynchronous serial.
B)The receive hardware can be a simple shift register.
C)It supports multiple slaves.
D)All of Above

Question 15

In a safety critical system, incorrect operation ____________

A)does not affect much
B)causes minor problems
C)causes major and serious problems
D)none of the mentioned

Question 16

Antilock brake systems, flight management systems, pacemakers are examples of ____________

A)safety critical system
B)hard real time system
C)soft real time system
D)safety critical system and hard real time system

Question 17

Some of the properties of real time systems include ____________

A)single purpose
B)inexpensively mass produced
C)small size
D)all of the mentioned

Question 18

The technique in which the CPU generates physical addresses directly is known as ____________

A)relocation register method
B)real addressing
C)virtual addressing
D)none of the mentioned

Question 19

Hard real time operating system has ______________ jitter than a soft real time operating system.

A)less
B)more
C)equal
D)none of the mentioned

Question 20

In rate monotonic scheduling ____________

A)shorter duration job has higher priority
B)longer duration job has higher priority
C)priority does not depend on the duration of the job
D)none of the mentioned

Question 21

In which scheduling certain amount of CPU time is allocated to each process?

A)earliest deadline first scheduling
B)proportional share scheduling
C)equal share scheduling
D)none of the mentioned

Question 22

Time duration required for scheduling dispatcher to stop one process and start another is known as ____________

A)process latency
B)dispatch latency
C)execution latency
D)interrupt latency

Question 23

Time required to synchronous switch from the context of one thread to the context of another thread is called?

A)threads fly-back time
B)jitter
C)context switch time
D)none of the mentioned

Question 24

Which one of the following is a real time operating system?

A)RTLinux
B)VxWorks
C)Windows CE
D)All of the mentioned

Question 25

VxWorks is centered around ___________

A)wind microkernel
B)linux kernel
C)unix kernel
D)none of the mentioned