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What is Tightly Coupled architecture in Distributed computing System?
In other fields tightly coupled means that two entities are closely associated. Probably, in Distributed Computing, it means that a module in the distributed architecture is closely related to the other modules. Therefore, this module only can be replaced by a very similar one.
What is a loosely coupled sytem?
A loosely coupled system is one in which each separate part (module) has very little direct interaction with each other module. The modules act largely independently of each other, each performing a small set of functions with data being passed from one module to another. This is an ideal situation because a loosely coupled system will require very few code changes if new modules are added, removed, or changed. A tightly coupled system will require a lot of recoding to make such changes. In the days where memory capacity was a limiting factor, tightly coupled code was essential to make it smaller and more efficient. Nowadays, except in some specialist applications, this is less importanat and having loosely coupled systems allows code to be developed by different people in different places and at different times.
What is the ECU-ETWIS?
ECU is the acronym for Electrical Control Unit and coupled with ETWIS it is the model name for a computer module for a Kia Sportage or Sedona.
Is it difficult to replace the Body Control Module on a Volkswagen Passat?
yes
Why is highly coupled module difficult to unit test?
Unit test can be done within a single module Cohesion of a single module/component is the degree to which its responsibilities form a meaningful unit; higher cohesion is better. Someone had vague reference to decomposability here. Clarification? How about: 'Cohesion is inversely proportional to the number of responsibilities a module/component has.' Coupling between modules/components is their degree of mutual interdependence; lower coupling is better. size: number of connections between routines intimacy: the directness of the connection between routines visibility: the prominence of the connection between routines flexibility: the ease of changing the connections between routines A first-order principle of software architecture is to increase cohesion and reduce coupling. so having coupling in program is not correct reduce coupling in your program it will favour Unit testing......
What is the influence of Cohesion and coupling for maintenance?
Coupling is an important metric. If the module P. is tightly coupled to module Q. then a change to module P. may require a corresponding change to module Q. If this change is made, as required, during integration or postdelivery maintenance, then the resulting product functions correctly; however, progress at that stage is slower then would have been the case had coupling been looser. It has been shown that the stronger (more undesirable) The coupling, the greater the fault proneness. In other words, it is easy to believe that strong coupling can have a deleterious effect on maintainability.
Where is the body control module for escalade 2000?
The body control module or BCM is located beneath the center console. Not an extremely difficult task. This link should assist.http://www.justanswer.com/questions/2hyd2-2000-escalade-needs-replacement maximusdm
What does a power steering sensor do?
Sensors detect the motion and torque of the steering column, and a computer module applies assistive power via an electric motor coupled directly to either the steering gear or steering column. http://en.wikipedia.org/wiki/Power_steering
What is the difference between coherent and cohesive?
Cohesion of a single module/component is the degree to which its responsibilities form a meaningful unit; higher cohesion is better.Coupling between modules/components is their degree of mutual interdependence; lower coupling is better.Size: number of connections between routines.Intimacy: the directness of the connection between routines.Visibility: the prominence of the connection between routines.Flexibility: the ease of changing the connections between routines.A first-order principle of software architecture is to increase cohesion and reduce coupling.Additional information can be found at the link I added below.Coupling and cohesion are often used as opposite ends of a scale in measuring how "good" a piece of software is. They are very common metrics for measuring the quality of object-oriented code.Cohesion describes how "focused" a piece of software is. A highly-cohesive system is one in which all procedures in a given module work together towards some end goal. High cohesion is often characterized by high readability and maintainability.Coupling describes how reliant a given piece of software is on other modules. A highly coupled system in one in which the procedures in one module can directly access elements of another module. A low coupled system in one in which the procedures of one module can only interact with the procedures of another through an interface channel. Highly coupled systems are often characterized by code that is difficult to read and maintain (the reason cohesion and coupling are often used as opposites).If you know what UML diagrams look like, then you can think of a highly coupled system as one in which there are multiple arrows pointing away from and into each module in the diagram.
What is the most common problem when active suspension on a 95 q45 stops working?
recommend vehicle replacement. the module for this is around $1500 and very difficult to replace
Does a 1986 Ford Van E150 have a Ignition Control Module and an electronic Control Module?
It does have an Ignition Control Module. It is mounted under the distributer cap by 2 screws and has wires plugged into it. they are $40-$60 dollars to buy from your local AutoZone, Napa, or O'Reily Auto Parts stores. Beware: you must remove airbox and hoses to get to the ICM and it is very difficult to get out after that anyhow.
How are coupling and cohesion related to modular design?
Ideally, modules will have low coupling and high cohesion. Coupling describes the strength of the connection between modules in a program. Loose (or low) coupling occurs when modules do not depend on other modules. One way to control this is by avoiding the use of global variables and reducing the number of variables that are passed between the modules. Another is to limit the depth of module calls (where a module calls another module, that then calls another module, and so on). Cohesion is a measure of how well a module accomplishes the module's purpose. High cohesion implies that all the module's internal statements serve to perform the module's (single) task. In order for modules to work together, there must be some connection between them. The nature of the connection is important because it determines the extent to which the modules are coupled. How are they connected? The best way to connect them is to pass the value of a local variable in one module to a second module through its parameter list. (A local variable is a variable that is defined within a module (not a parameter) is local to that module. The values of local variables are not available outside of the module in which they are declared unless they are passed. Local variables are reset to their default values once control leaves the module in which they are declared.) Another way to share information is through the use of global variables. (A variable that is defined outside of a module and that does not need to be passed to a module to be accessed by it is a global variable. Global variables retain their value once control leaves the module in which they are referenced. ) Because the value of a global variable can be changed by any module without passing, it increases the coupling between modules.
