An implementation methodology in which smaller portions of functionality of a system are typically implemented one at a time (one after the other) is referred to as: D. phased implementation.
SDLC is an abbreviation for system development life cycle and it can be defined as a strategic methodology that defines the key steps, phases, or stages for the design, development and implementation of high quality systems.
In Computer technology, there are seven (7) phases involved in the development of a system and these include the following;
Generally, an implementation methodology in which smaller portions of functionality of a system are typically implemented one at a time (one after the other) is commonly referred to as phased implementation.
Read more on phased implementation here: https://brainly.com/question/7112675
#SPJ1
Complete Question:
What is the implementation methodology in which smaller portions of functionality of a system are implemented one at a time?
A. Direct cutover
B. Pilot implementation
C. Parallel operation
D. Phased implementation