These cards are issued by a state or country in which medical cannabis is recognized. Typically a patient is required to pay a fee to the state in order to obtain a medical marijuana card. In most states with medical marijuana card programs, the card is valid for up to 12 months and may be renewed.
Alternatively referred to as a ring network, ring topology is a computer network configuration where the devices are connected to each other in a circular shape. Each packet is sent around the ring until it reaches its final destination.
A network topology in which two concentric rings connect each node on a network instead of one network ring that is used in a ring topology. Typically, the secondary ring in a dual-ring topology is redundant. It is used as a backup in case the primary ring fails.