Network Types Flashcards
What is a Local Area Network (LAN)?
Local Area Network (LAN)networks usually contained within a single building or small geographical location.
It is made up of hubs and/or switches, which will connect several devices together.
One hub or switch commonly connects to a router, allowing LAN connectivity to other outside networks such as the Internet.
Advantages of LANs:
Allows centralised management of updates, backups and software installations.
Can secure its devices with the use of firewalls, antivirus software and other security features to prevent unauthorised access.
A LAN allows users on the network to share resources such as printers and other peripherals.
Disadvantages of LANs:
The network may not function correctly in case of hardware failure.
They are more prone to attacks than standalone computers.
Data and peripheral accessing can be slow, based on network traffic.
LAN networks require maintenance to ensure the software is up-to-date.
What is Wireless Local Area Network (WLAN)?
Local Area Networks allow devices to connect wirelessly rather than using physical cables.
Wireless Access Points (WAPs) are connected to an existing wired network, which provides wireless connectivity.
Supports a vast range of devices, such as smartphones and laptops, which are very popular in public areas such as shopping malls.
Advantages of Wireless Local Area Network (WLAN):
Allows users to connect anywhere in the range of a Wireless Access Point (WAP).
They can be used in various indoor and outdoor environments, making them highly flexible.
As the requirements change, additional WAPs can be added relatively easily.
Printer access can be given to wireless devices.
Disadvantages of Wireless Local Area Network (WLAN):
The strength of their signals can be affected by obstacles such as walls.
Speeds can be affected by high-traffic areas.
It can sustain interference from other devices which can affect performance and connectivity.
Can be vulnerable to security threats due to signal interception.
What are Wide Area Networks (WAN)?
A Wide Area Networks (WAN) is formed by several LANs connected through a router.
It is expensive. However, it comes with a more enhanced security.
Additional hardware is needed for a WAN: Routers, modems, and proxy servers.
Advantages of Wide Area Networks (WAN):
Provide the ability to connect geographically dispersed locations, such as offices in different cities or countries.
Over the flexibility to scale up or down based on the organisation’s needs.
Administrators can monitor and manage the network infrastructure from a single location.
Disadvantages of Wide Area Networks (WAN):
Setting up and maintaining a WAN can be expensive, especially compared to LANs.
Cover larger distances and rely on public networks or leased lines, which can introduce latency and affect performance.
WANs are subject to the reliability and availability of external service providers.
