Subjects:
means that several computers are connected in a ring. When one computer wants to send
data to another, it has to catch a free token which gives the permission to send data. As
soon as one particular machine gets the token, it has the control over the whole network
which means no other computer can send data. Then it puts its destination address and
the data on the token, and sends the token to the machine that¡¦s next to it. If the next
machine is not the destination, it will pass the data on and on until it gets to the address.
When the addressed station gets the data, it can not kee
. . .
for Ethernet, when computers get messages which do not belong to them, they will not
keep them and pass them on. Third, a computer
on a Bus network has to wait for the network to be clear in order to send data packets. It copies the data, then it sends the message back to the initiator with the
acknowledgment to say that it has received the data. First, a
Token Ring network has a ring which connects the network instead of a cable. p the message and release the
token.
A Ring network has a token, so as soon as a machine catches the token, it can send data. The only disadvantage is that it is
relatively expensive and hard to install.
There are similarities and differences between Token Ring topology and Bus
topology. However, Token Ring topology prevents
collisions from setting a token on the network, so there¡¦s always only one transmission of
data at certain time. asp) Ring
topology is similar to Bus topology in that both networks have multiple access so that the
messages will got to every station on the network.
Essay's Topics
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