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Pcas Chapter 1 > chapter 3 > Flashcards

chapter 3 Flashcards

1
Q

Refers to the physical equipment or components of an electronic data processing. It is also composed of input, output and storage and network devices.

A

Computer Hardware

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2
Q

These are the hardware devices which take information from user of the computer system, convert it into electrical signals and transmit it to the processor.

A

Input Devices

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3
Q

A computer hardware that used to input text characters and other commands.

A

Keyboard

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4
Q

A device that used to
point to and select items
on your computer screen.

A

Mouse

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5
Q

A Device that used to
transfers images or text a
computer there are special
models the negatives or to scan
book.

A

Image scanner

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6
Q

It is low resolution video
used to provide visual
input.

A

Web Camera

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7
Q

This is an input device to input
sound that is then stored in a digital form.

A

Microphone

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8
Q

This is used to add sounds.

A

Microphone

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9
Q

It is used to present information to the user from a computers.

A

Output Devices

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10
Q

Take’s data from the computer system and convert it to a form that can be read by humans.

A

Output Devices

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11
Q

The most important difference between these types is the technology used to create an image.

A

Monitor

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12
Q

The most common
monitor type, red, green,
blue electron beams.

A

Cathode-ray (CRT)

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13
Q

Most
tv’s used this technology

A

Cathode-ray (CRT)

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14
Q

Is commonly used in laptops
and some projectors.

A

Liquid crystal display (LCD)

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15
Q

It consist of two polarizing filters with a liquid crystal solution.

A

Liquid crystal display (LCD)

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16
Q

This Is a technology used in projectors, projectors
use a spinning color wheel with a microprocessor controlled array of mirrors called a digital micromirror device (DMD)

A

Digital light processing (DLP)

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17
Q

output devices that create hard copies of computer files. Some specialize in particular applications.

A

Printers And Fax Machines

18
Q

Output devices for audio.

A

Speakers and Headphones

19
Q

Alternatively referred to asdigital storage,storage,storage media, orstorage medium, astorage deviceis anyhardwarecapable of holding information either temporarily or permanently.

A

Storage Device

20
Q

The picture shows an example of adrobo, an external secondary storage device.

A

Storage Device

21
Q

One of the most common types of storage used with computers.

A

Magnetic storage device

22
Q

Another common storage
device is this lasers and
lights as its method of
writing and reading data.

A

Optical storage device

23
Q

Has started to replace
magnectic media, it is
more efficient and
reliable.

A

Flash memory

24
Q

Early computers had no method
of using any of the above
technologies for storing
information, these form is
rarely used.

A

Paper storage

25
Q

It operates at the physical layer.

A

Repeater

26
Q

Its job is to regenerate the signal over the same network.

A

Repeater

27
Q

It is basically a multiport repeater. A connects multiple wires coming from different branches.

A

HUB

28
Q

These are the hubs which have their own power supply and can clean, boost and relay the signal along the network.

A

Active HUB

29
Q

These are the hub which
collect wiring from nodes
and power supply from
active hub.

A

Passive Hub

30
Q

These hub relay
signals onto network
without cleaning and
boosting.

A

Passive Hub

31
Q

It operates a data link layer.

A

BRIDGE

32
Q

This is a repeater, with add on functionality of filtering content by reading the MAC addresses of source and destination.

A

BRIDGE

33
Q

It is used for interconnecting two LANS working on the same protocol.

A

BRIDGE

34
Q

These are the bridge in which the stations are complexly unaware of the bridges existence i.e.

A

Transparent Bridge

35
Q

This is used ontoken ring networks, and is standardized in Section 9 of theIEEE802.2 standard.

A

Source Routing Bridge

36
Q

The operation of the bridge is simpler (spanning tree protocol is not necessary) and much of the bridging functions are performed by the end systems, particularly the sources, giving rise to its name.

A

Source Routing Bridge

37
Q

It is a multi port bridge with a
buffer and a design that can
boost can perform error, it
divides collision domain of host.

A

Switch

38
Q

In order for devices on the
network to connect to
theInternet, theroutermust
be connected to a modem.

A

Routers

39
Q

Therefore, mosthave a specific Ethernet port that is designed to connect to the Ethernet port

A

Routers

40
Q

It is a passage to connect
two networks together that
may work upon different
networking models.

A

Gateway

41
Q

Also known as a bridging router which combines features of both bridge and router.

A

Brouter

42
Q

It is working as a bridge, it can filter local area network traffic.

A

Brouter

Pcas Chapter 1 (8 decks)

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