# data[].attributes.body
Personal Area Network (PAN) - made up of a wireless modem, a computer or two, phones, printers, tablets, etc., and revolves around one person in one building. These types of networks are typically found in small offices or residences, and are managed by one person or organization from a single device.

Local Area Network (LAN) - LANs connect groups of computers and low-voltage devices together across short distances (within a building or between a group of two or three buildings in close proximity to each other) to share information and resources. Enterprises typically manage and maintain LANs.

Wireless Local Area Network (WLAN) - Functioning like a LAN, WLANs make use of wireless network technology, such as Wi-Fi. Typically seen in the same types of applications as LANs, these types of networks don’t require that devices rely on physical cables to connect to the network.

Wide Area Network (WAN) - Slightly more complex than a LAN, a WAN connects computers together across longer physical distances. This allows computers and low-voltage devices to be remotely connected to each other over one large network to communicate even when they’re miles apart. The Internet is the most basic example of a WAN.

# data[].attributes.body
hacking can be a major issue

# data[].attributes.body
A network consists of two or more computers that are linked in order to share resources (such as printers and CDs), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams.

# data[].attributes.body
Risk of virus is high and more damaging since it can spread to different computers.
Cost of network is high since executing the system includes equipment expensive

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Disadvantages

Purchasing the network cabling and file servers can be expensive.

Managing a large network is complicated, requires training and a network manager usually needs to be employed.

If the file server breaks down the files on the file server become inaccessible. Email might still work if it is on a separate server. The computers can still be used but are isolated.

Viruses can spread to other computers throughout a computer network.

There is a danger of hacking, particularly with wide area networks. Security procedures are needed to prevent such abuse, eg a firewall

# data[].attributes.body
A network is a collection of computers, servers, mainframes, network devices, peripherals, or other devices connected to one another to allow the sharing of data.

# data[].attributes.body
Communicate and share data and files
Data is easy to backup as all the data is stored on the file server.
Hardware can be shared therefore saving money.

# data[].attributes.body
A network is a group of computers that use common communication protocols and share resources.

# data[].attributes.body
Resources can be shared
Devices such as printers can be shared saving cost

# data[].attributes.body
Personal Area Network - PAN
Local Area Network - LAN
Wireless Local Area Network - WLAN
Wide Area Network - WAN

# data[].attributes.body
A network consists of two or more computers that are linked in order to share resources, such as printers, exchange files and or allow electronic communications.

# data[].attributes.headline
L1 - switches, hubs, routers, gateways, bridge and network interface cards. 

# data[].attributes.subject
L1 - switches, hubs, routers, gateways, bridge and network interface cards. 

# data[].attributes.body
Describe the role and operations of the following components in a network:

1. switches,

2. hubs,

3. wireless access points,

4. network interface cards,

5. wireless network interface cards,

6. routers,

7. repeaters,

8. gateways,

9. bridge,

10. firewalls (hardware and software) servers