Which of the following types of cohesion can be considered as the best form of cohesion a logic B coincidental C temporal D functional?
By Show
- July 16, 2021 Cohesion is the measure of functional relatedness of elements within a single module. When dividing a system into modules, it must ensure that the activities within the module are tightly bound to one another. Types of cohesionFunctional cohesion:
Sequential cohesion:
Communicational cohesion:
Procedural cohesion:
Temporal cohesion:
Logical cohesion:
Coincidental cohesion:
Read more about Coupling Previous articleCoupling – Types of coupling Next articleNEXT GENERATION QUANTUM COMPUTING Brijesh Yadav Coincidental cohesion is when parts of a module are grouped arbitrarily; the only relationship between the parts is that they have been grouped together (e.g., a “Utilities” class). Logical cohesion Logical cohesion is when parts of a module are grouped because they are logically categorized to do the same thing even though they are different by nature (e.g., grouping all mouse and keyboard input handling routines). Temporal cohesion Temporal cohesion is when parts of a module are grouped by when they are processed - the parts are processed at a particular time in program execution (e.g., a function which is called after catching an exception which closes open files, creates an error log, and notifies the user). Procedural cohesion Procedural cohesion is when parts of a module are grouped because they always follow a certain sequence of execution (e.g., a function which checks file permissions and then opens the file). Communicational/informational cohesion Communicational cohesion is when parts of a module are grouped because they operate on the same data (e.g., a module which operates on the same record of information). Sequential cohesion Sequential cohesion is when parts of a module are grouped because the output from one part is the input to another part like an assembly line (e.g., a function which reads data from a file and processes the data). Functional cohesion (best) Functional cohesion is when parts of a module are grouped because they all contribute to a single well-defined task of the module (e.g., Lexical analysis of an XML string). What is the best form of cohesion?Functional cohesion -- this is the best and the most preferred type of cohesion in which the degree of cohesion is the highest. In this type of cohesion, the elements of a module are functionally grouped into a logical unit and they work together as a logical unit -- this also promotes flexibility and reusability.
Which type of cohesion is the strongest form of cohesion?Functional CohesionFunctional cohesion is the strongest form of cohesion. All the items in functionally cohesive module are focused on performing a single,well-defined task; no matter how simple or complex the task.
Which are the best two types of cohesion?Studies by various people including Larry Constantine, Edward Yourdon, and Steve McConnell indicate that the first two types of cohesion are inferior; communicational and sequential cohesion are very good; and functional cohesion is superior.
Which of the following is considered as the strongest level of cohesiveness?The best level of cohesion is functional cohesion.
|
