Network Flashcards

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1
Q

Access Permissions

A

The type of access given to a user for a network resource e.g. accessing a file, directory or server.

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2
Q

Analog

A

A continuously varying signal in the shape of a wave. TV, phones and radio use analog transmission.

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3
Q

Binary

A

Having 2 states, such as on and off in an electronic signal

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4
Q

Bridge

A

A device that knows the segment on which the destination computer is located and only sends a data packet to that segment.

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5
Q

Bus topology

A

A layout of a Local Area Network in which computers and other devices are connected in a row along a single cable.

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6
Q

Cable

A
  • collection of wires shielded within a protective tube

- connects computers and equipment into a network

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7
Q

Common types of cables

A

Coaxial cable and UTP

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8
Q

Coaxial cable

A

used in thin Ethernet and to connect your TV to your VCR

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9
Q

UTP

A

Unshielded Twisted Pair: used for UTP Ethernet – a very common type of network cable; and fibre optic.

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10
Q

Client

A

On a local area network or the Internet, a computer that accesses network resources provided by another computer (called a server).

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11
Q

Client/server

A

A network design where a task is divided between a back end (server) which stores data and a front end (client) which asks for the data.

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12
Q

Co-axial cable

A

A type of cable used in networks. Electronic signals do not weaken on co-axial cables as they do on twisted pair cables.

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13
Q

Communications

A

The transmission of data over a communication link, such as an ordinary phone line, messaging on a Blackberry or from one computer to another computer.

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14
Q

Digital

A

The way computers save and process information in binary digits (bits). A bit is either 1 or 0, 1 representing On and 0 representing Off.

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15
Q

Domain

A

For Windows NT Server, a collection of computers that share a common domain database and security policy. Each domain has a unique name.

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16
Q

Email

A

A system where a user can exchange messages and documents with other computer users (or groups of users) via a communications network

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17
Q

Fiber optic cable

A

A cable made of very thin strands of glass capable of carrying electronic signals as pulses of light.

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18
Q

File server

A

A central computer that stores the files of every person on the network.

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19
Q

File transfer protocol

A

A process that provides file transfers between computers.

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20
Q

Gateway

A

A device that connects two local area networks, whether or not they use the same protocols.

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21
Q

Group

A

An account containing members who are granted the same permissions and rights.

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22
Q

Hub

A

An electronic device which provides a common connection to all devices on the network.

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23
Q

Internet

A

The Internet is the largest computer network in the world. The Internet consists of thousands of connected networks around the world.

24
Q

LAN

A

Local Area Network is a network that connects computers in a small area such as a classroom.

25
Q

Local group

A

group that is granted permissions and rights to only the resources on the servers of its own domain.

26
Q

Login

A

Entering a username and a password to access a network.

27
Q

Media

A

There are two types of media. Cable media and non-cable media (such as radio waves and microwaves). The message travels from the sender to the receiver over the communication media.

28
Q

2 types of media

A

Cable media and non-cable media (such as radio waves and microwaves).

29
Q

Modem

A

A device that converts digital information to analog (and analog to digital) so that it can be sent over the telephone lines to another computer.

30
Q

Network

A

A group of connected computers that allow people to share information and equipment.

31
Q

Network administrator also called _________

A

The person who manages the network and makes sure it runs without problems. Also called Network Manager.

32
Q

NIC (?)

A

A Network Interface Card provides the physical connection between the computer and the network and controls the flow of information between the network and the computer.

33
Q

Network operating system and example

A

The software responsible for running and maintaining a network. Windows NT is an example.

34
Q

Node

A

In local area networks, a device that is connected to the network and is capable of communicating with other network devices.

35
Q

Packet

A

A unit of information sent as a whole from one device to another on a network

36
Q

Permission

A

In a network, the ability of a user to access a particular resource like a printer by means of his or her user account.

37
Q

Protocol

A

A set of rules designed to enable computers to connect with each other, for example the Internet protocol TCP/IP.

38
Q

Receiver

A

A person or device that receives a message on a network.

39
Q

Repeater

A

A device that repeats a signal so that it can travel on longer cables.

40
Q

Right

A

The ability of a user to perform certain actions like reading from or writing to a folder on the system, unlike a permission, which applies to a specific resource.

41
Q

Ring topology

A

A layout for a Local Area Network in which computers and other devices are connected on a single circle of cable.

42
Q

Router

A

A device on a network that speeds up message delivery.

43
Q

Security

A

ensures network resources (such as files and printers) can only be used by authorized users. The NOS allows the network administrator to set up the security for the network.

44
Q

Sender

A

A person or device that sends a message to a receiver.

45
Q

Server

A

A computer that provides shared resources to network users.

46
Q

Shared folder

A

A folder whose contents are available to other users on a network.

47
Q

Star topology

A

A layout of a Local Area Network in which computers and other devices are connected by cable to a hub.

48
Q

Token

A

A set of bits that circulates continuously among the nodes of a token ring network to deliver or send messages from computers.

49
Q

Topology

A

The way cable is used to connect computers in a network. Common topologies are bus, star and ring.

50
Q

Twisted pair

A

A cable used in telephone systems made up of 4 sets of 2 insulated copper wires twisted together.

51
Q

User

A

Anyone using a computer, on or off a network.

52
Q

Username

A

The name by which a user is identified to a network.

53
Q

User profile

A

Information on the server kept about an authorized user of a network.

54
Q

WAN

A

network that connects computers across a large area such as a city or country. A wan may use phone lines microwave or satellite.

55
Q

Workgroup

A

A group of users working on a common project and sharing computer files, often over a local area network.

56
Q

Workstation

A

computer connected to the network. A workstation has access to network resources such as shared files and printers.