Computer Networking

It provides addressing and channel access control mechanisms that make it possible for several terminals or network nodes to communicate within a multi-point network.

A username is simply an identity (or name) that you will have (and will be displayed for all users who see your posts) on the particular website where you create an account.

In order that other people can't use your account, there is usually a requirement for you to choose a password so that only you can log-in to the account of your username. There may also be a request for to choose a memorable question and answer. These are solely to allow you to retrieve access to your account if and when you might forget either your usernamer or your password (all you will need to do is provide your email address to the site and they will reset your password).

So, just choose any name that suits you like 'periwinkle' or tomato or itsmeagain as a username, and then choose a password which you will easily remember. I make a copy, for each site I join, of my username for that site and my password for that site (mainly because I have joined too many to be able to remember them all.

i liked that vidieo very very very much I am dating that girl...

Networked computers.

Peer to Peer everybody is equal, security is slack, and you can only have a few comps on network

server based offers better security, monitor users, more technical and time consuming to set-up, less likely to cause problems if set-up correctly, any amount of comps etc....

It's called a Network Interface Card, or "NIC" for short.

there has been a misunderstanding between modem and router. some people use only a modem to connect wirelessly and some use a modem and a router. The fact is there are two types. first type is a modem with built in router, second is router itself. this will clear your mind. you don't have to buy a router to go online, just a get modem with router built in

I would say it is "possible", but very, very unlikely. I say this in the context of the addresses of the computers on the Internet. Each one MUST have a unique IP address, or it will be confusing as to which one you should be communicating with. Now, it would be possible for someone to set their IP address to be the same as another computer, but the only possible reason would be to try and pretend to be the real "owner" of the IP address for some reason. I would not expect it to be very effecive unless someone really knew what they were doing and how the Internet works. And the truth is that many, many computers with Internet access DO have the same IP address. They are often something like 192.168.xxx.xxx. The reason this is not a problem is that they are behind a router or other device like perhaps a firewall that uses what is known as Network Address Translation or NAT. This is where the rounter has a unique IP address, but then transfers information to local computers that are connected to it that have a privit set of IP addresses. This provides protection from the outside, since no one can know your "real" IP address and connect to your PC, but also allows for many more computers to connect to the web then would be possible just using the numbers available with the standard IP addressing. There is a new scheme of Internet addressing that you may be interested in: http://www.google.com/search?&q=IP+v6 Most internet service providers have more customers than dedicated addresses. When you logon to your service, you are assigned one of their addresses. When you log off, that address becomes available to another user. Some businesses have a central computer which stays connected to the internet and all the computers on the network will have the same IP address.

The function of a subnet mask is to extract the network ID portion of an IP destination address and determine whether an IP address exists on the local network or whether it must be routed outside the local network

MAC address is a unique identifier assigned to most network adapters or network interface cards (NICs) by the manufacturer for identification, and used in the media access control protocol sub-layer. If assigned by the manufacturer, a MAC address usually encodes the manufacturer's registered identification number. It may also be known as an Ethernet Hardware Address, hardware address, adapter address, or physical address.

Stand Alone computer

in bus topology computers are connected with each other by a wire in a approximately strait manner..and if one computer stops working the whole network will stop. while in star topology every computer is connected with the host computer & much wire is require..and if any client computer tops working it will not effect the whole network.----ravi singh chauhan...7275974787

Using UTP or STP cable, 100 meters per segment.

Yes if you use a switch and connect it to your modem, then add two routers to it, you can have more than one networks using the same iP address but putting more stress on your modem. But two computers on the same network cannot have the same local IP or every packet that gets transmitted will be corrupted by sending half and half to both machines on the network making internet access glitchy or unusable.

Optical fibers can transmit any form of data - from voice communications to binary data that people may need on a daily basis (Internet connectivity).

If you don't have a wireless router, that means you can only get connected to the internet using wire / LAN cable.

Firewalls, use of static routing only, Routers with ACLS

Seven.

Seven.

Seven.

Seven.

Class C.

Physical and MAC addressing are found in the OSI layer 2?

Private IP Addresse

Because of NAT redirection a small company can rely solely on private IP addresse for its internal network and use only the s one public IP assigned to it by is ISP for Internet communication IEEE recommends that the following IP addresse be used for private networks

10.0.0.0 through 10.255.2

172.16.0.0 through 172.31.255.255

192.168.0.0 through 192.168.255.255