Question

Two popular fiber ring technologies are FDDI (runs at 100 Mbps) and SONET (2.4 Gbps). Both are dual-ring technologies. Discover and report what that means.

Answer 1

FDDI :- Fiber Distributed Data Interface

Fiber Distributed Data Interface An FDDI arrange contains two token rings, one for conceivable reinforcement in case the essential ring comes up short. The ring capacity is 100 Mbps . In the event that the auxiliary ring isn't required for reinforcement, it can moreover carry information, amplifying capacity to 200 Mbps. The single ring can amplify the most extreme separate; a double ring can expand 100 km (62 miles) over fiber-optic cabling; frequently utilized for arrange spines in a neighborhood zone organize (LAN) or metropolitan region arrange (MAN).

FDDI Workfunction:-

Fiber Distributed Information Interface (FDDI) is ordinarily actualized as a double token-passing ring inside a ring topology (for campus systems) or star topology (inside a building). The double ring comprises of a essential and auxiliary ring. The essential ring carries information. The counter-rotating auxiliary ring can carry information within the inverse heading, but is more commonly saved as a reinforcement in case the essential ring goes down. This gives FDDI with the degree of blame resilience necessary for organize spines. Within the occasion of a disappointment on the essential ring, FDDI naturally reconfigures itself to utilize the auxiliary ring as appeared within the outline. Deficiencies can be found and repaired employing a blame segregation strategy called beaconing. Be that as it may, the auxiliary ring can moreover be arranged for carrying information, amplifying the greatest potential transmission capacity to 200 Mbps.

SONET:-Synchronous optical networking

SONET stands for Synchronous Optical Organize. SONET could be a communication convention, created by Bellcore – that's utilized to transmit a huge sum of information over generally expansive separations utilizing optical fiber.

Synchronous optical networking (SONET) could be synchronously exchanges different informative streams through fiber optic cables. It may be a physical layer detail that permits concurrent transmission of voice, information, and video at speeds as tall as 1Gbps through a single fiber. In phone systems, it is utilized for transmission of a tremendous sum of phone calls and information streams through fiber.

Here is the analysiswhy both have different speed if the technology used in both is same.

so,

there are two types of ring technologies:

1) unidirectional

2) bidirectional

1) ring topology, too known as Ring arrange, could be a sort of organize topology where each hub is precisely associated to two other hubs, forward and in reverse, in this way shaping a single nonstop way for flag transmission. it allow the FDDI

2)A SONET/ SDH may be a standardized organize convention that exchanges information streams over optical filaments. While, a bidirectional ring topology handles information activity in both the heading and can be a full-duplex organize.