A Medium of Exchange Must Be

question 36

Multiple Choice

A medium of exchange must be:

• A)approved by the government.
• B)universally acceptable in exchange for goods and services.
• C)easy to reproduce.
• D)used to eliminate the specialization and division of labor.
• E)used when a system of barter exists.

---

Definitions:

PLC Architectures

The structural design of Programmable Logic Controllers, determining how its components are interconnected and how it processes information and control tasks.

Communications

The process of transferring or exchanging information between entities using common systems, protocols, or methods.

Master/Slave Protocol

A communication protocol in which one device (master) controls one or more other devices (slaves).

Polling

A network access method where a master controller manages the communication process by interrogating each slave controller under it to determine whether the slave has any information to send.