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The Attached Resource Computer Network (ARCNet) standard was created in 1977 at the Data Point Corporation by a scientist – John Murphy. ARCNet uses the token-passing protocol over a star and bus topology. The star and bus topology combines the flexibility of a star with the simplicity and throughput of a bus. Thus, ARCNet standard has a unique protocol/topology combination: token-passing protocol and Distributed star/bus topology. Here are some of the ARCNet's advantages: 1. It is extremely reliable. 2. ARCNet is easy to install and troubleshoot. 3. It has an excellent track record of interoperability for those using ARCNet components from various manufacturers. 4. ARCNet supports a variety of cable types including coaxial, UTP and Fiber Optics. 5. It is inexpensive and built to stay that way. Here are some disadvantages of ARCNet: 1. Standard ARCNet is very slow (2.5 Mb/s). It is almost seven times slower than Token Ring. 2. ARCNet was not designed with interconnectivity in mind. For many installations, it's difficult to go beyond the confines of single LAN.