Local Area Network

If you look at redundant networks in nature, like the network of the veins within a leaf you may realize that redundancy creates resilience.

Often leaves are subjected to parasites or physical damage. If a vital vein is struck in a network without redundancy it would mean all tissues or nodes which it previously fed into would be effectively annihilated from the network (death). A redundant network overcomes this problem by spreading out the risk.

From a Computational standpoint this would be the same problem. Often critical layers of a network if left without connectivity would create critical failures for parts of the network which may be dependent on its activity. Such is the nature of hierarchy.

False - a peer-to-peer network is simpler.

A packet capture (or sniffer) program sees packets coming into and out of the NIC (network interface card). It saves it for later analysis and use. These capture programs can be used to analyze traffic, look for problems, or be used for looking at data coming across the network.

1 Gbps

That depends on what you will be using the cable for.

In general, the higher the frequency of the signal being sent down the cable, the shorter the cable has to be.

The environment of the cable is also important. If the cable is in an electrically noisy environment, it needs to be shorter.

There are various standards that specify the maximum length of a cable. Sometimes it will work (some of the time) if you use a longer piece of cable, but following the standard is much more likely to work correctly all the time.

Some examples from computer networking standars:

For 10BASE-T Ethernet, the maximum length of a cable is 100 meters. Note that this standard was defined for Cat 3 cable, so you'll probably be able to use Cat 5e cable to send the signal further. However, there's no standard specifying how much further - you'll probably have to test it yourself.

For 100BASE-T Ethernet, the maximum length is also 100 meters, but the cable grade is specified as Cat 5 (not Cat 5e). So you might be able to make a longer run work with Cat 5e.

For 1000BASE-T Ethernet, again the maximum length is 100 meters, but now the cable must be Cat 5e. Also, all four pairs of the cable are used, whereas in the other two standards only two pairs are used.

HTH,

Gdunge

You should be able to do that, but some minor tweaking of setting might be required.

Go to the Wiki for OSI model -that discussion and listing is very good.

The 45 indicates the jack number; RJ45 indicates Registered Jack number 45. However, there is a slight complication - what most people call RJ45 should actually be 8P8C. The RJ numbers used to be allocated by the FCC, but they are now defined by Administrative Council for Terminal Attachment (ACTA).

LAN: Local Area Network

Examples:

1) 2 or more computers connected

2) small office or an internet cafe

WAN: Wide Area Network

Examples:

1) Internet

2) VPN

3) WAN links

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why the lan high speed than wan

They forward only changes to individual routes instead of forwarding entire routing tables., taking up less band and time. Joseph G.

Examples for Metropolitan area network is a network of fire station, newspaper/media company, a chain of community colleges

RIP

Robert Metcalfe

The last 3 octets represent the host portion in a class A address.

It means "Fat of the land."

The digital token based payment system is a new form of electronic payment system which is based on electronic tokens rather than e-cheque or e-cash. The electronic tokens are generated by the bank or some financial institutions. Hence we can say that the electronic tokens are equivalent to the cash which are to be made by the bank.

In general a switch is better than a hub because it doesn't repeat signals to all of the ports (and thus reduces collisions).

remote access is where a computer is used from a different location to where the user is, this is useful to IT staff so they can administer a machine without even being in the same building, home users also benefit from remote access by being able to 'dial in' to their home computers whist at work or elsewhere.

TCP is connection oriented protocol,mean it ensure that a packet is delivered and also set up a connection before sending data to destination source and destination exchange several control signal before sending data.If a packet is lost,TCP resend it. UDP does not establish any communication before sending data.It sends data and forget it.If a packet is lost,application using UDP cannot resend it.A example of UDP is voip,if a packet is lost,a part of conversation is also lost and can not be resend

Flow Control

There are many ways to communicate between networks. The rules for doing so are called protocols, and there are many known protocols. Some are historical in nature (meaning they have been around a long time) and some are newer ones developed in the last few years.

Protocols describe how to communicate and when to communicate. They may be specific to a means of communication (i.e. web traffic, email traffic) or they may be more general (TCP/IP - covering many protocols).

Deciding on which protocol to communicate with other networks is based on how the networks communicate currently and what kind of traffic will be transferred between the two. A protocol is designed so that there are common rules regarding communication, so certain protocols will be used to be common between networks.

TCP/IP is an example of a very common, widely-used communication protocol.

router

Lan switches eliminate collision domain. A single collision domain in a network would mean half duplex as it can only send or receive at one time. each port of a switch is considered a collision domain in itself. so more the number of collision domain , better for the network.

Usually as a rule of thumb a peer to peer network is appropriate when the number of clients is about 10 or less, and you don't need a dedicated technician to run the network. In addition, a peer to peer network is best used when the growth of the network is small or slow as well.

Small departments and companies successfully use peer to peer networking because they do not require anything more costly or sophisticated.