Drawbacks:
The advantages and disadvantages of a token ring can be seen in a comparison with Ethernet systems....Pros and cons of token rings.
The advantage over contention based channel access (such as the CSMA/CD of early Ethernet), is that collisions are eliminated, and that the channel bandwidth can be fully utilized without idle time when demand is heavy.
In general, a token is an object that represents something else, such as another object (either physical or virtual), or an abstract concept as, for example, a gift is sometimes referred to as a token of the giver's esteem for the recipient. In computers, there are a number of types of tokens.
Advantages of a ring topology
Advantages of Ring topology:
Differences between Ring Topology and Bus Topology :
Ring Topology There are two dedicated point to point links a device has with the devices on the either side of it. This structure forms a ring thus it is known as ring topology.
star topology
"Token Ring is an example of a ring topology." 802.
Ring network topologies are most often found on school campuses, though some commercial organizations also use them. FDDI, SONET, or Token Ring technology are typically used. Data is transported bit by bit from each node until it reaches its destination.
The Star Topology (Hierarchical) When a computer sends data to other computers on the network, it is sent along the cable to a central hub or switch, which then determines which port it needs to send the data through for it to reach the proper destination.
In wide area networks (WAN) and meteropolitan area networks (MAN), a ring topology is used to as the topology for the backbone (sometimes called a city ring) to connect the customers. In that case the ring is used in both directions to have two distinctive paths to the public switch.
Collapsed Ring - A topology where the ring resides entirely within a single fiber bundle. In the event of a cable cut the ring is severed in two places.
Answer: Most ring topologies allow packets to travel only in one direction, called a unidirectional ring network. Others permit data to move in either direction, called bidirectional. The major disadvantage of a ring topology is that if any individual connection in the ring is broken, the entire network is affected.
Dual-ring topology is a network redundant topology where nodes are connected using two concentric rings with four branches. Dual-ring topology is ideal for applications with cabling issues or small networks that are not frequently reconfigured.
Main advantage of dual ring topology over traditional ring topology is that dual ring topology provides redundant paths in networks. Redundant paths provide more stability and security in networks. Also, the second ring can provide an additional data path.
In a ring topology, devices are connected to each other in a closed loop, which means each device is connected to two other devices, one on each side. ... Data is transmitted in an unusual way on a ring topology, using tokens.
IBM
The term "token ring" is used to describe a computer network configuration where each computer is linked to the computer next to it to form a closed ring. In this network, computers cannot transmit data until permission is received from the network in the form of an electronic token.
A token-ring network is a local area network (LAN) topology that sends data in one direction throughout a specified number of locations by using a token. The token is the symbol of authority for control of the transmission line.
The time taken by a single bit to travel around the ring is known as ring latency. The time taken by the token to complete one revolution of the ring is known as cycle time. The maximum time a token frame can be held by a station is known as THT, by default it is set to 10msec. No station can hold the token beyond THT.
Token is a fledgling hardware company that just introduced its first product: the Token ring, an identity ring designed to store your credentials and secure your privacy with a fingerprint sensor. The Token ring starts at $249 and is now available for presale. The first Token rings will start shipping in December.
A token, proposal or promise ring is a symbolic ring that you pop the question with, so you can pick out the main engagement ring together afterwards.
engagement ring