System Analysis and Design
The black-box concept:

All of these
assumes that inputs and outputs will remain stable
is invoked by describing a system in terms of inputs and outputs, leaving the transformation process a black box.
None of these
assumes that the black box is independent

ANSWER DOWNLOAD EXAMIANS APP

System Analysis and Design
An open rectangle

identifies data flow
None of these
defines a source or destination of system data
is a data store-data at rest, or a temporary repository of data
represents a process that transforms incoming data flow(s) into outgoing data flows

ANSWER DOWNLOAD EXAMIANS APP