ISC2 Exam ISSEP Topic 4 Question 7 Discussion

The various functional analysis and allocation tools are as follows:

Functional hierarchy diagram: It models the hierarchy of functions that the system is in charge for

performing, the sub-functions that

are required by those functions, and any business processes that are used to invoke those sub

functions. The objective of functional

hierarchy diagram is to show all of the function requirements and their groupings in one diagram.

Functional flow block diagram (FFBD): The objective of FFBDs is to construct the system

requirements into functional terms. The FFBD

classifies the major system-level (or top-level) functions that must be performed by the system to

accomplish its mission.

Timeline analysis diagram: It presents a graphical view of whether the functions are to be

accomplished in series or in parallel.

Answer option B is incorrect. The activity diagram is not a part of the functional analysis and

allocation tools.