Which of the following is NOT one of the types of fixed resistors?

The reasoning behind identifying resistor networks as not being a type of fixed resistor lies in the distinction between a resistor and a configuration made up of multiple resistors. Fixed resistors are individual components that provide a set resistance value and do not change with temperature or voltage. Examples include carbon-composition resistors, wire-wound resistors, and metal-film resistors, each having specific constructions and applications that define them as types of fixed resistors.

Resistor networks, on the other hand, consist of multiple resistors that are combined into a single package. They may be used to achieve specific resistance values or configurations (like series or parallel) but are not categorized as fixed resistors in themselves. Instead, they function as assemblies of multiple fixed resistors and may include variable resistors or integrated circuits that allow for different resistance configurations. This combination doesn't qualify as a single type of fixed resistor since it entails multiple components working together rather than one distinct resistor type.