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Applied Computing > Networks > Flashcards

Networks Flashcards

1
Q

Networks

A

A collection of computers and devices cpmmected by communication channels that facilitates communication between user and allows for sharing of resources

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2
Q

Advantages of a network

A

Sharing of data, information, hardware and software
Allowing communication

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3
Q

Disadvantages of a network

A

Need skilled staff to operate
Expensive to run and maintain

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4
Q

Types of networks

A

LAN
WAN

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5
Q

Network architecture

A

Peer to peer
Cilent server
Wireless Personal Network

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6
Q

Advantages of a Wired Networks

A

Faster data transfer
Better security
More reliable connection

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7
Q

Disadvantages of a Wired Networks

A

Lack of mobility
Installation requirement
Needs to be maintained

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8
Q

Types of cabling

A

Unshielded twisted pair
Fibre optic
Corexical

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9
Q

Advantages over UTP of Fibre optic

A

Can carry more signal
Faster transfer
Less susceptible to noise from other machines
Data loss is less over great distances

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10
Q

Disadvantages over UTP of fibre optic

A

Cable costs more
Cost alot to terminate at each end
Need specialist to maintain

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11
Q

Wireless networks standard

A

802/11X is the standard
a,b,g,n,ac,AX are categories

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12
Q

Wireless Networks

A

Wireless LAN
Mobile network
Satellite network
Microwave network
Infrared
Bluetooth

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13
Q

The internet of things

A

refers to the collective network of connected devices and the technology that faciliates communication between devices and the cloud as well as between the devices themselves

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14
Q

NIC

A

Allows a device to connect to a network
Where IP is stored

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15
Q

Server types

A

File Server
Web server
Proxy server
Database server
Mail Server
Print Server

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16
Q

DHCP

DHCP

A

Asigns an IP address to each device and gateway address in network

17
Q

DNS

A

Links up the name of the device on network with IP

18
Q

Back up server

A

control how back is performed

19
Q

Active Directory Domain Controller

A

Responds to authentication request and verifies user. Also stores account information and enforces security policy

20
Q

wAP

A

Acts as a central transmitter and receiver of wirless radio signals

21
Q

Router

A

A device that connect multiple networks together
(Connects devices and protocols)

22
Q

Switch

A

Device that provides connecting point for cables in a LAN
Decides which node that data is coming and going from

23
Q

Modem

A

Connects LAN to internet by convertting analogy into digital and back
(not need in modern routers)

24
Q

Firewall

A

Controls the traffic coming in and out of the network
(Network firewall or host-based firewall)

25
Q

Network Operating System

A

Administration, file management, device managment and security. Controls computer systems and perpherals of network

26
Q

Internet

A

Each devices as an IP address, either V6 or V4

27
Q

Intranet

A

Private network accessible only by users within organisation

28
Q

TCP

A

Converts data into packets.
Sends each packet towards the destination.
arranges the packets into the correct order when arriving
Reassembles the packets back into the correct format a the destination

29
Q

IP

A

Responsible for the address and the routing of packets to the coorect destinatio, It uses packet switching to do this

30
Q

Ethernet

A

A set of rules about how the data is communicated in wired network

31
Q

Packet switching

A

Directs packets destination even if routes are different

32
Q

File transfer protocol

A

Used to transfer files between devices

33
Q

VPN

A

Allows users to use public networks as if they are using a private network

34
Q

NAS

A

Device that offers data storage capabilities, users of the network can save and retrieve data from
Similar to file server but does not have the controll functions

35
Q

Advantages of a NAS

A
  • is it has a large storage capacity and it easy to add further storage capacity if
    required.
  • It is relatively inexpensive and does not require a high level of expertise to set up and
    manage
  • As it is located in the LAN, the organisation has full control over the data stored and
    who has access to it.
36
Q

Disadvantage of a NAS

A
  • All the data is stored in one place, if there was a disaster the data would be lost.
  • NAS is shared storage. As with other shared storage, system administrators must
    enforce quotas without which a few users may hog all the storage at the expense of
    other users

Applied Computing (10 decks)

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