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Introduction to Computing > Week 5-6 MIDTERMS > Flashcards

Week 5-6 MIDTERMS Flashcards

1
Q

The basic foundation of a computer network is data communication, the process of exchanging data between two devices via some form of communication media.

A

Data Communication System

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2
Q

It is a piece of information to be transmitted from the sender to the destination.

A

Message

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3
Q

The device that sends the message.

A

Sender

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4
Q

The device that recieves the message

A

Receiver

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5
Q

It is the physical path by which a message travels from a sender to a receiver.

A

Transmission Medium

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6
Q

What are the 2 types of Transmission Medium

A

Guided Media (Wired Media)
Unguided Media (Wireless Media)

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7
Q

It uses a single conductor in the middle of a cable.

A

Coaxial Cable

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8
Q

What is the central conductor of a coaxial cable surrounded by an insulator called?

A

Dielectric

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9
Q

2 types of coaxial cable

A

Thicknet
Thinnet

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10
Q

It coonsist of thousands of very thin filaments of glass fiber that transmit data in the form of light waves, instead of electrical signals.

A

Fiber optic cable

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11
Q

2 types of twisted pair cable

A

Shielded Twisted pair cable
Unshielded Twisted pair cable

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12
Q

Cable wires that are twisted together

A

Unshielded Twisted pair cable

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13
Q

It has high noise comparatively

A

Unshielded Twisted pair cable

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14
Q

Grounding is not required

A

Unshielded Twisted pair cable

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15
Q

It has slow data rates

A

Unshielded Twisted pair cable

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16
Q

It’s cheaper and doesn’t require much maintenance

A

Unshielded Twisted pair cable

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17
Q

It’s a twisted cable that is enclosed in foil

A

Shielded Twisted pair cable

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18
Q

It’s less susceptible to noise and crosstalk

A

Shielded Twisted pair cable

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19
Q

Grounding is necessarily required

A

Shielded Twisted pair cable

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20
Q

It provides high data rates

A

Shielded Twisted pair cable

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21
Q

It’s moderately expensive

A

Shielded Twisted pair cable

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22
Q

Types of guided media or wired media

A

Twisted Pair Cable
Coaxial Cable
Fiber Optic Cable

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23
Q

It is wireless media that can travel for a long distance.

A

MIcrowave

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24
Q

Its data transmission is used for high volume, long distance, point-point communication.

A

Microwave

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25
Q

moving or operating in a single direction.

A

Unidirectional

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26
Q

It is normally used for transmitting data for a medium distance

A

Radiowave

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27
Q

Data transmission through this is widely being used for short distance connection.

A

Infrared

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28
Q

What are the types of unguided media or wireless media

A

MIcrowave
Radiowave
Infrared

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29
Q

The set of rules and procedures governing data transmission from one layer to another is called _____________.

A

Protocol

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30
Q

It is a conceptual model that Characterizes and standardizes the communication functions of a telecommunication or computing system without regard to its underlying internal structure and technology.

A

Open System Interconnection (OSI) Model

31
Q

What layer defines the protocol for transmitting signal over a media?

A

Physical Layer

32
Q

What layer defines the protocol for transmitting data from one node to another in a computer network?

A

Data Link Layer

33
Q

What layer defines the protocol for determining the correct route to ensure that data transmitted by a sender will arrive at the correct destination?

A

Network Layer

34
Q

What layer defines the protocol for making sure that the correct data arrives at the destination?

A

Transport Layer

35
Q

What layer defines a means for coordinating communication between a sender and a reciever?

A

Session Layer

36
Q

What layer defines the way data is formatted and encoded before its transmitted?

A

Presentation Layer

37
Q

What layer defines the way applications such as e-mail program interact with the data transmission system

A

Application Layer

38
Q

It is a telecommunications network used for telephone calls between two or more parties.

A

Telephone Network

39
Q

It has basic voice service

A

1st Generation or 1G

40
Q

It’s a analog-based protocol

A

1st Generation or1G

41
Q

It is designed for voice

A

2nd Generation or 2G

42
Q

It has improved coverage and capacity.

A

2nd Generation or 2G

43
Q

It is the First Digital Standards (GSM,CDMA)

A

2nd Generation or 2G

44
Q

It’s designed for voice with some data consideration (multimedia, text, internet)

A

3rd Generation or 3G

45
Q

It’s the First Mobile Broadband

A

3rd Generation or 3G

46
Q

It’s designed primarily for data

A

4th Generation or 4G

47
Q

It has IP-Based protocol

A

4th Generation or 4G

48
Q

True mobile broadband

A

4th Generation or 4G

49
Q

It is a combination of nodes that provides communication from one point on the earth to another. A node can either be a satellite, an earth station, or end-user terminal.

A

Satellite Network

50
Q

What are the 3 types of satellite network?

A

Geo Stationary Earth Orbit (GEO)
Medium Earth Orbit (MEO)
Low Earth Orbit (LEO)

51
Q

What Satellite Network is 40,000km above the equator | T.V. Signals

A

Geo Stationary Earth Orbit (GEO)

52
Q

What Satellite Network is 10,000-20,000km | GPS

A

Medium Earth Orbit (MEO)

53
Q

What Satellite Network is 2,000km | Telephone Communication

A

Low Earth Orbit (LEO)

54
Q

It connects computers together over relatively small distances, such as within a single building or within a small group of buildings.

A

Local Area Network (LAN)

55
Q

This is a network which is larger than a LAN, but smaller than an MAN.

A

Campus Area Network (CAN)

56
Q

This is typical in areas such as a or small business, university, large school

A

Campus Area Network (CAN)

57
Q

It is typically spread over a collection of buildings which are reasonably local to each other

A

Campus Area Network (CAN)

58
Q

It may have an internal Ethernet as well as capability of connecting to the internet.

A

Campus Area Network (CAN)

59
Q

This is a network which is larger than a LAN but smaller than a WAN and incorporates elements of both.

A

Metropolitan Area Network (MAN)

60
Q

It typically spans a town or city and is owned by a single person or company, such as a local council or a large company

A

Metropolitan Area Network (MAN)

61
Q

It can be a single network or can be established by combining a number of LANs into a larger network

A

Metropolitan Area Network (MAN)

62
Q

It connects computers together over large physical distances, remotely connecting them over one huge network and allowing them to communicate even when far apart.

A

Wide Area Network (WAN)

63
Q

The Internet is a _______ and connects computers all around the world together.

A

Wide Area Network (WAN)

64
Q

__________ are usually too large to be controlled by one administrator, and so usually have collective ownership, or in the case of the internet, is publicly owned.

A

Wide Area Network (WAN)

65
Q

This is a LAN which works using wireless network technology such as Wi-Fi (802.11b standard).

A

Wireless Local Area Network (WLAN)

66
Q

It means devices do not need to rely on physical cables and wires as much and can organize their spaces more effectively

A

Wireless Local Area Network (WLAN)

67
Q

This type of network is becoming more popular as wireless technology is further developed and is used more in the home and by small businesses.

A

Wireless Local Area Network (WLAN)

68
Q

What are the Different types of network

A

Local Area Network (LAN)
Campus Area Network (CAN)
Metropolitan Area Network (MAN)
Wide Area Network (WAN)\
Wireless Local Area Network (WLAN)

69
Q

What are the network devices/tools

A

Network Interface Card
Hub
Bridge
Swtich
Routers

70
Q

These allow computers to communicate over the network with a low-level addressing system using media access control (MAC) addresses to distinguish one computer from another.

A

Network Interface Card

71
Q

A connectivity device to which network cables are attached to form a network segment. ____ typically do not filter data, but instead retransmit incoming data packets or frames to all parts

A

Hub

72
Q

These connect network segments, which allows information to flow only to specific destinations

A

Bridge

73
Q

These are devices that forward, make forwarding decisions and otherwise filter chunks of data communication between ports according to the MAC addresses in the packets of information

A

Swtich

74
Q

These are devices that forward packets between networks by processing the information in the packet.

A

Routers

Introduction to Computing (5 decks)

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