Which medium access control technique is used for bus/tree?
Which medium access control technique is used for bus/tree?
The correct option is B Token bus
Token bus medium access control technique is used
for bus/tree.
Token bus is a network implementing the token ring
protocol over a virtual ring on a coaxial cable. A token is passed around the
network nodes and only the node possessing the token may transmit. If a node
doesn't have anything to send, the token is passed on to the next node on the
virtual ring. Each node must know the address of its neighbour in the ring, so
a special protocol is needed to notify the other nodes of connections to, and
disconnections from, the ring.
In the fields of physical security and information
security, access control (AC) is the selective restriction of access to a place
or other resource. The act of accessing may mean consuming, entering, or using.
Permission to access a resource is called authorization.
Due to difficulties handling device failures and
adding new stations to a network, token ring gained a reputation for being
unreliable and difficult to upgrade. Bus networks, such as Ethernet, had a more
flexible and reliable physical architecture, but Ethernet's access protocol
could not absolutely guarantee a maximum time any station would have to wait to
access the network, so was thought to be unsuitable for manufacturing
automation applications. The Token bus protocol was created to combine the
benefits of a physical bus network with the deterministic access protocol of a
token ring network.
Token bus medium access control technique is used for bus/tree.
Token bus is a network implementing the token ring protocol over a virtual ring on a coaxial cable. A token is passed around the network nodes and only the node possessing the token may transmit. If a node doesn't have anything to send, the token is passed on to the next node on the virtual ring. Each node must know the address of its neighbour in the ring, so a special protocol is needed to notify the other nodes of connections to, and disconnections from, the ring.
In the fields of physical security and information security, access control (AC) is the selective restriction of access to a place or other resource. The act of accessing may mean consuming, entering, or using. Permission to access a resource is called authorization.
Due to difficulties handling device failures and adding new stations to a network, token ring gained a reputation for being unreliable and difficult to upgrade. Bus networks, such as Ethernet, had a more flexible and reliable physical architecture, but Ethernet's access protocol could not absolutely guarantee a maximum time any station would have to wait to access the network, so was thought to be unsuitable for manufacturing automation applications. The Token bus protocol was created to combine the benefits of a physical bus network with the deterministic access protocol of a token ring network.
