Networks

Question 1

Networks

Answer 1

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

Question 2

Advantages of a network

Answer 2

Sharing of data, information, hardware and software
Allowing communication

Question 3

Disadvantages of a network

Answer 3

Need skilled staff to operate
Expensive to run and maintain

Question 4

Types of networks

Answer 4

LAN
WAN

Question 5

Network architecture

Answer 5

Peer to peer
Cilent server
Wireless Personal Network

Question 6

Advantages of a Wired Networks

Answer 6

Faster data transfer
Better security
More reliable connection

Question 7

Disadvantages of a Wired Networks

Answer 7

Lack of mobility
Installation requirement
Needs to be maintained

Question 8

Types of cabling

Answer 8

Unshielded twisted pair
Fibre optic
Corexical

Question 9

Advantages over UTP of Fibre optic

Answer 9

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

Question 10

Disadvantages over UTP of fibre optic

Answer 10

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

Question 11

Wireless networks standard

Answer 11

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

Question 12

Wireless Networks

Answer 12

Wireless LAN
Mobile network
Satellite network
Microwave network
Infrared
Bluetooth

Question 13

The internet of things

Answer 13

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

Question 14

NIC

Answer 14

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

Question 15

Server types

Answer 15

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

Question 16

DHCP

DHCP

Answer 16

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

Question 17

DNS

Answer 17

Links up the name of the device on network with IP

Question 18

Back up server

Answer 18

control how back is performed

Question 19

Active Directory Domain Controller

Answer 19

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

Question 20

wAP

Answer 20

Acts as a central transmitter and receiver of wirless radio signals

Question 21

Router

Answer 21

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

Question 22

Switch

Answer 22

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

Question 23

Modem

Answer 23

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

Question 24

Firewall

Answer 24

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

Question 25

Network Operating System

Answer 25

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

Question 26

Internet

Answer 26

Each devices as an IP address, either V6 or V4

Question 27

Intranet

Answer 27

Private network accessible only by users within organisation

Question 28

TCP

Answer 28

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

Question 29

IP

Answer 29

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

Question 30

Ethernet

Answer 30

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

Question 31

Packet switching

Answer 31

Directs packets destination even if routes are different

Question 32

File transfer protocol

Answer 32

Used to transfer files between devices

Question 33

VPN

Answer 33

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

Question 34

NAS

Answer 34

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

Question 35

Advantages of a NAS

Answer 35

* 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.

Question 36

Disadvantage of a NAS

Answer 36

* 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