Deck 7: Input Output

Question 1

With a daisy chain the processor just picks the interrupt line with the highest priority.

Answer 1

False

Question 2

A multipoint external interface provides a dedicated line between the I / O module and the external device.

Answer 2

False

Question 3

The disadvantage of the software poll is that it is time consuming.

Answer 3

True

Question 4

An I / O module that is quite primitive and requires detailed control is usually referred to as an _________.

A)I / O command
B)I / O controller
C)I / O channel
D)I / O processor

Question 5

It is the responsibility of the processor to periodically check the status of the I / O module until it finds that the operation is complete.

Question 6

An I / O module that takes on most of the detailed processing burden,presenting a high-level interface to the processor,is usually referred to as an _________.

A)I / O channel
B)I / O command
C)I / O controller
D)device controller

Question 7

A disadvantage of memory-mapped I / O is that valuable memory address space is used up.

Question 8

An I / O module must recognize one unique address for each peripheral it controls.

Question 9

An I / O channel has the ability to execute I / O instructions,which gives it complete control over I / O operations.

Question 10

The I / O function includes a _________ requirement to coordinate the flow of traffic between internal resources and external devices.

A)cycle
B)status reporting
C)control and timing
D)data

Question 11

Bus arbitration makes use of vectored interrupts.

Question 12

Because the 82C55A is programmable via the control register,it can be used to control a variety of simple peripheral devices.

Question 13

When large volumes of data are to be moved,a more efficient technique is direct memory access (DMA).

Question 14

The most common means of computer / user interaction is a __________.

A)keyboard / monitor
B)mouse / printer
C)modem / printer
D)monitor / printer

Question 15

The rotating interrupt mode allows the processor to inhibit interrupts from certain devices.

Question 16

The _________ contains logic for performing a communication function between the peripheral and the bus.

A)I / O channel
B)I / O module
C)I / O processor
D)I / O command

Question 17

A Thunderbolt compatible peripheral interface is no more complex than that of a simple USB device.

Question 18

A set of I / O modules is a key element of a computer system.

Question 19

With isolated I / O there is a single address space for memory locations and I / O devices.

Question 20

I / O channels are commonly seen on microcomputers,whereas I / O controllers are used on mainframes.

Question 21

The 8237 DMA is known as a _________ DMA controller.

A)command
B)cycle stealing
C)interrupt
D)fly-by

Question 22

The U.S.national version of the International Reference Alphabet is referred to as __________.

Question 23

We can broadly classify external devices into three categories: human readable,communication,and __________.

Question 24

A ________ controls multiple high-speed devices and,at any one time,is dedicated to the transfer of data with one of those devices.

Question 25

The Thunderbolt protocol _________ layer is responsible for link maintenance including hot-plug detection and data encoding to provide highly efficient data transfer.

A)cable
B)application
C)common transport
D)physical

Question 26

When the processor,main memory,and I / O share a common bus,two modes of addressing are possible: memory mapped and ________.

Question 27

There are four types of I / O commands that an I / O module may receive when it is addressed by a processor: control,test,write,and _________.

Question 28

________ is a digital display interface standard now widely adopted for computer monitors,laptop displays,and other graphics and video interfaces.

A)DisplayPort
B)PCI Express
C)Thunderbolt
D)InfiniBand

Question 29

The ________ command is used to activate a peripheral and tell it what to do.

A)control
B)test
C)read
D)write

Question 30

________ is when the DMA module must force the processor to suspend operation temporarily.

A)Interrupt
B)Thunderbolt
C)Cycle stealing
D)Lock down

Question 31

The categories for the major functions or requirements for an I / O module are: control and timing,device communication,data buffering,error detection,and _________.

Question 32

An external device connected to an I / O module is often referred to as a __________ device.

Question 33

Interface to the processor and memory via the system bus or central switch and interface to one or more peripheral devices by tailored data links are two major functions of an _____________.

Question 34

The ________ is a single-chip,general-purpose I / O module designed for use with the Intel 80386 processor.

Question 35

The _________ command causes the I / O module to take an item of data from the data bus and subsequently transmit that data item to the peripheral.

A)control
B)test
C)read
D)write

Question 36

In __________ mode the I / O module and main memory exchange data directly,without processor involvement.

Question 37

The ________ contains I / O protocols that are mapped on to the transport layer.

A)cable
B)application
C)common transport
D)physical

Question 38

A ________ is used to connect storage systems,routers,and other peripheral devices to an InfiniBand switch.

A)target channel adapter
B)InfiniBand switch
C)host channel adapter
D)subnet

Question 39

The ________ layer is the key to the operation of Thunderbolt and what makes it attractive as a high-speed peripheral I / O technology.

A)cable
B)application
C)common transport
D)physical

Question 40

A ________ connects InfiniBand subnets,or connects an InfiniBand switch to a network such as a local area network,wide area network,or storage area network.

A)memory controller
B)TCA
C)HCA
D)router

Question 41

In a ________ interface there is only one line used to transmit data and bits must be transmitted one at a time.

Question 42

The most recent,and fastest,peripheral connection technology to become available for general-purpose use is __________,developed by Intel with collaboration from Apple.

Question 43

In a _________ interface there are multiple lines connecting the I / O module and the peripheral and multiple bits are transferred simultaneously.

Question 44

________ enables servers,remote storage,and other network devices to be attached in a central fabric of switches and links,connecting up to 64,000 servers,storage systems,and networking devices.

Question 45

A ________ machine is an instance of an operating system along with one or more applications running in an isolated memory partition within the computer,enabling different operating systems to run in the same computer at the same time,as well as preventing applications from interfering with each other.