ATO Mission Computers Practice Test

Which statement best describes the topology of MIL-STD-1553?

MIL-STD-1553 is a dual-redundant, multi-drop bus supporting multiple remote terminals. MIL-STD-1553 is strictly a single-wire bus with no redundancy. MIL-STD-1553 is a wireless protocol. MIL-STD-1553 uses unidirectional, point-to-point.

Correct Answer:

MIL-STD-1553 is a dual-redundant, multi-drop bus supporting multiple remote terminals.

Explanation:

MIL-STD-1553 uses a wired, shared medium where a single Bus Controller can address many Remote Terminals on the same bus. It is designed as dual-redundant, meaning there are two independent conductor paths so the system keeps working even if one path has a fault. This setup is multi-drop, allowing multiple RT devices to be connected to the same bus and operated under a command/response scheme. The bus isn’t a single wire, isn’t wireless, and isn’t limited to one point-to-point link; instead, it relies on a shared, redundant two-wire pair that several devices can connect to and communicate over in a coordinated, time-multiplexed fashion.

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