Networks are classified as either local area networks or wide area networks?

Answer 1

Comparison chart

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LAN

WAN

Data transmission Error:

Experiences fewer data transmission errors

Experiences more data transmission errors as compared to LAN

Data transfer rates:

LANs have a high data transfer rate

WANs have a lower data transfer rate as compared to LANs

Technology:

Tend to use certain connectivity technologies, primarily Ethernet and Token Ring

WANs tend to use technology like MPLS, ATM, Frame Relay and X.25 for connectivity over the longer distances

Connection:

one LAN can be connected to other LANs over any distance via telephone lines and radio waves

Computers connected to a wide-area network are often connected through public networks, such as the telephone system. They can also be connected through leased lines or satellites

speed:

high speed(1000mbps)

less speed(150mbps)

Maintenance costs:

Because it covers a relatively small geographical area, LAN is easier to maintain at relatively low costs.

Maintaining WAN is difficult because of its wider geographical coverage and higher maintenance costs.

Fault Tolerance:

LANs tend to have less problems associated with them, as there are a smaller amount of systems to deal with.

WANs tend to be less fault tolerant. as it consists of a large amount of systems there is a lower amount of fault tolerance.

Example:

Network in an organization can be a LAN

internet is the best example of a WAN

Geographical spread:

Have a small geographical range and do not need any leased telecommunication lines

Have a large geographical range generally spreading across boundaries and need leased telecommunication lines

Set-up costs:

If there is a need to set-up a couple of extra devices on the network, it is not very expensive to do that

In this case since networks in remote areas have to be connected hence the set-up costs are higher

Ownership:

Typically owned, controlled, and managed by a single person or organization

WANs (like the Internet) are not owned by any one organization but rather exist under collective or distributed ownership and management over long distances

Definition:

LAN (Local Area Network) is a computer network covering a small geographic area, like a home, office, schools, or group of buildings.

WAN (Wide Area Network) is a computer network that covers a broad area (e.g., any network whose communications links cross metropolitan, regional, or national boundaries over a long distance

Components:

layer 2 devices like switches, bridges. layer1 devices like hubs , repeaters

Layers 3 devices Routers, Multi-layer Switches and Technology specific devices like ATM or Frame-relay Switches etc.

A local area network (LAN) exists in a house or a university campus, while a wide area network (WAN) exists over many office buildings separated by a vast distance. The office buildings in a WAN may be in different countries or even continents. For example, the headquarters building may be in the USA, the regional office building may be in the UK, and the branch office building may be in India. The workers in the three buildings use WAN to collaborate with each other. The Internet can also be considered as a WAN. Let's take a look at the LAN vs. WAN comparison check.

Difference between LAN and WAN

The other difference between LAN and WAN, is the speed of thenetwork. The maximum speed of a LAN can be 1000 megabits per second, while the speed of a WAN can go up to 150 megabits per second. This means the speed of a WAN, is one-tenth of the speed of a LAN. A WAN is usually slower because it has lower bandwidth.

Computers in a LAN can share a printer, if they are all in the same LAN. On the other hand, a WAN cannot share a printer, so a computer in one country cannot use a printer in Another Country. A LAN does not need a dedicated computer to direct traffic to and from the Internet, unlike a WAN that needs a special-purpose computer, whose only purpose is to send and receive data from the Internet.

Another LAN vs. WAN comparison is the cost of the network. A WAN is more expensive than a LAN. It is easier to expand a LAN than a WAN. The equipment needed for a LAN is a network interface card (NIC), a switch and a hub. On the other hand, the equipment needed to connect a WAN to the Internet is a modem and a router. The modem may be a cable modem or a DSL modem that is connected to a wall jack, while the router should be configured so that it can handle the packets traveling between the WAN and the Internet.

In LAN vs. WAN, there is a difference in the networking standard used. A LAN uses the Ethernet standard, while a WAN uses the T1 standard. Before Ethernet, the protocols used for LAN were Attached Resource Computer Network (ARCNET) and Token Ring. The protocols used for WAN are Frame Relay and Asynchronous Transfer Mode (ATM). Another protocol for WAN is Packet over SONET/SDH (PoS), where SONET stands for Synchronous Optical Networking and SDH stands for Synchronous Digital Hierarchy. The first WAN protocol was X.25, while an advanced WAN protocol is Multiprotocol Label Switching (MPLS). The hardware in a LAN is connected with 10Base-T cable connectors, while a WAN is connected via leased lines or satellites.

Here is an explanation of LANs and WANs. A LAN is easy to set up, as you need to slip the NIC into the PCI slot (for desktop computers) or PCMCIA slot (for laptop computers). You also need to install the driver for the NIC. The NIC can be connected to the network using the RJ45 port.

On the other hand, a WAN is very difficult to set up. There is often an appliance to optimize the WAN. There is also a device to cache WAN data, so workers in the branch office can quickly access documents. The router also has Quality of Service (QoS) built in, so that it gives priority to certain kinds of traffic.

There are various topologies available in LAN and WAN networking. The most common topologies in LAN and WAN networks are ring and star. The ring topology is a network in which every node (every computer) is connected to exactly two other nodes. The star topology is a network in which all the nodes (called leaf nodes or peripheral nodes) are connected to a central node.

Answer 2

A local area network is typically a relatively small network. A LAN typically only comprises computers within the same building, or perhaps an entire campus. A wide area network on the other hand is a bit larger. A WAN actually connects multiple LANs together to form a large network. The Internet is an example of a WAN.

Answer 3

A Local Area Network or LAN is a network within a local area, typically within a office building or home. A Wide Area Network or WAN, is a LAN that has some/all traffic going through a slower medium, typically though the internet using a Virtual Private Network (VPN). A WAN has some part of the network is one location with other part/s in other location/s.

Answer 4

One way to categorize the different types of computer network designs is by their scope or scale. For historical reasons, the networking industry refers to nearly every type of design as some kind of area network. Common examples of area network types are:

• LAN - Local Area Network
• WLAN - Wireless Local Area Network
• WAN - Wide Area Network
• MAN - Metropolitan Area Network
• SAN - Storage Area Network, System Area Network, Server Area Network, or sometimes Small Area Network
• CAN - Campus Area Network, Controller Area Network, or sometimes Cluster Area Network
• PAN - Personal Area Network
• DAN - Desk Area Network

LAN and WAN were the original categories of area networks, while the others have gradually emerged over many years of technology evolution.
Note that these network types are a separate concept from network topologies such as bus, ring and star.

See also - Introduction to Network Topologies

?LAN - Local Area Network A LAN connects network devices over a relatively short distance. A networked office building, school, or home usually contains a single LAN, though sometimes one building will contain a few small LANs (perhaps one per room), and occasionally a LAN will span a group of nearby buildings. In TCP/IP networking, a LAN is often but not always implemented as a single IP subnet.
In addition to operating in a limited space, LANs are also typically owned, controlled, and managed by a single person or organization. They also tend to use certain connectivity technologies, primarily Ethernet and Token Ring. ?WAN - Wide Area Network As the term implies, a WAN spans a large physical distance. The Internet is the largest WAN, spanning the Earth.
A WAN is a geographically-dispersed collection of LANs. A network device called a routerconnects LANs to a WAN. In IP networking, the router maintains both a LAN address and a WAN address.
A WAN differs from a LAN in several important ways. Most WANs (like the Internet) are not owned by any one organization but rather exist under collective or distributed ownership and management. WANs tend to use technology like ATM, Frame Relay and X.25 for connectivity over the longer distances.

We can classify network technologies as belonging to one of two basic groups. Local area network (LAN) technologies connect many devices that are relatively close to each other, usually in the same building. The library terminals that display book information would connect over a local area network. Wide area network (WAN) technologies connect a smaller number of devices that can be many kilometers apart. For example, if two libraries at the opposite ends of a city wanted to share their book catalog information, they would most likely make use of a wide area network technology, which could be a dedicated line leased from the local telephone company, intended solely to carry their data.
In comparison to WANs, LANs are faster and more reliable, but improvements in technology continue to blur the line of demarcation. Fiber optic cables have allowed LAN technologies to connect devices tens of kilometers apart, while at the same time greatly improving the speed and reliability of WANs.

Answer 5

LAN is connected by cables and land lines. WAN is a wireless connection to a router.