Software-Engineering
August 28, 2024Software-Engineering
August 28, 2024Software-Engineering
| Question 414 |
Which of the following types of coupling has the weakest coupling?
| Pathological coupling | |
| Control coupling | |
| Data coupling | |
| Message coupling |
Question 414 Explanation:
Coupling is the degree of interdependence between software modules; a measure of how closely connected two routines or modules are the strength of the relationships between module
Coupling can be “low” (also “loose” and “weak”) or “high” (also “tight” and “strong”).
Some types of coupling, in order of highest to lowest coupling, are as follows:
Content coupling (high)
Content coupling is said to occur when one module uses the code of other module, for instance a branch. This violates information hiding – a basic design concept.
Common coupling
Common coupling is said to occur when several modules have access to the same global data. But it can lead to uncontrolled error propagation and unforeseen side-effects when changes are made.
External coupling
External coupling occurs when two modules share an externally imposed data format, communication protocol, or device interface. This is basically related to the communication to external tools and devices.
Control coupling
Control coupling is one module controlling the flow of another, by passing it information on what to do (e.g., passing a what-to-do flag).
Stamp coupling (data-structured coupling)
Stamp coupling occurs when modules share a composite data structure and use only parts of it, possibly different parts
Data coupling
Data coupling occurs when modules share data through, for example, parameters. Each datum is an elementary piece, and these are the only data shared (e.g., passing an integer to a function that computes a square root).
Coupling can be “low” (also “loose” and “weak”) or “high” (also “tight” and “strong”).
Some types of coupling, in order of highest to lowest coupling, are as follows:
Content coupling (high)
Content coupling is said to occur when one module uses the code of other module, for instance a branch. This violates information hiding – a basic design concept.
Common coupling
Common coupling is said to occur when several modules have access to the same global data. But it can lead to uncontrolled error propagation and unforeseen side-effects when changes are made.
External coupling
External coupling occurs when two modules share an externally imposed data format, communication protocol, or device interface. This is basically related to the communication to external tools and devices.
Control coupling
Control coupling is one module controlling the flow of another, by passing it information on what to do (e.g., passing a what-to-do flag).
Stamp coupling (data-structured coupling)
Stamp coupling occurs when modules share a composite data structure and use only parts of it, possibly different parts
Data coupling
Data coupling occurs when modules share data through, for example, parameters. Each datum is an elementary piece, and these are the only data shared (e.g., passing an integer to a function that computes a square root).
Correct Answer: C
Question 414 Explanation:
Coupling is the degree of interdependence between software modules; a measure of how closely connected two routines or modules are the strength of the relationships between module
Coupling can be “low” (also “loose” and “weak”) or “high” (also “tight” and “strong”).
Some types of coupling, in order of highest to lowest coupling, are as follows:
Content coupling (high)
Content coupling is said to occur when one module uses the code of other module, for instance a branch. This violates information hiding – a basic design concept.
Common coupling
Common coupling is said to occur when several modules have access to the same global data. But it can lead to uncontrolled error propagation and unforeseen side-effects when changes are made.
External coupling
External coupling occurs when two modules share an externally imposed data format, communication protocol, or device interface. This is basically related to the communication to external tools and devices.
Control coupling
Control coupling is one module controlling the flow of another, by passing it information on what to do (e.g., passing a what-to-do flag).
Stamp coupling (data-structured coupling)
Stamp coupling occurs when modules share a composite data structure and use only parts of it, possibly different parts
Data coupling
Data coupling occurs when modules share data through, for example, parameters. Each datum is an elementary piece, and these are the only data shared (e.g., passing an integer to a function that computes a square root).
Coupling can be “low” (also “loose” and “weak”) or “high” (also “tight” and “strong”).
Some types of coupling, in order of highest to lowest coupling, are as follows:
Content coupling (high)
Content coupling is said to occur when one module uses the code of other module, for instance a branch. This violates information hiding – a basic design concept.
Common coupling
Common coupling is said to occur when several modules have access to the same global data. But it can lead to uncontrolled error propagation and unforeseen side-effects when changes are made.
External coupling
External coupling occurs when two modules share an externally imposed data format, communication protocol, or device interface. This is basically related to the communication to external tools and devices.
Control coupling
Control coupling is one module controlling the flow of another, by passing it information on what to do (e.g., passing a what-to-do flag).
Stamp coupling (data-structured coupling)
Stamp coupling occurs when modules share a composite data structure and use only parts of it, possibly different parts
Data coupling
Data coupling occurs when modules share data through, for example, parameters. Each datum is an elementary piece, and these are the only data shared (e.g., passing an integer to a function that computes a square root).
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