The Roman Empire collapsed after Christ's death.
After the Roman Empire Collapsed
A rebellion war broke out.
Mongols
Yugoslavia
Synchronous Optical Networks (SONET) have various optical networks. An OC-3 circuit is one of these. The answer is yes, since OC-3 is a product of the SONET architecture.
sonet ring
SONET use RING physical topology and TOKEN logical topology. As simple as that. Logical topology deals with the data transmission. Physical topology deals with how the network is connected physically , BUS, RING, STAR and the like.
fault tolerance
Network+ Guide to Networks answer: OC1
Sonet Film was created in 1984.
Ishraq Sonet was born in 1987.
SDH = 3 times of SONET
Network+ Guide to Networks answer: OC1
Some disadvantages of SONET include high cost of implementation, complexity in network planning and management, and limited flexibility to accommodate newer technologies and increased bandwidth requirements. Additionally, SONET can be difficult to scale and may not be cost-effective for smaller networks.
A. Its double-ring topology.... try using the book now and again :D on pg325 Network+ 5th :P And for those of us confused and lost, thank you
OC (Optical Carrier) level.