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Exam MB-500 topic 3 question 18 discussion

Actual exam question from Microsoft's MB-500
Question #: 18
Topic #: 3
[All MB-500 Questions]

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
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You must extend the class SalesLineType and add a new method that returns the day of week for the system's current date as an integer value.
You need to create a class that extends SalesLineType and adds the new method.
Solution: You create the following code:

Does the solution meet the goal?

  • A. Yes
  • B. No
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
by softmanpk at March 18, 2021, 9:31 a.m.

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SiPa
Highly Voted 4 years, 1 month ago
Should be "Yes" ExtensionOf property correct Class naming correct with "_Extension" Method on type "int" and "dayofwk(Date date)" return integer value.
upvoted 9 times
theCoder1
4 months ago
An extension class cannot inherit from another class
upvoted 1 times
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ImranBalti
3 years, 4 months ago
what about next() in CoC ?
upvoted 1 times
Nkraa
3 years, 3 months ago
You need next() when you are changing the logic of an existing method. In this cas it is a new that is being created. How i know that? look at the method name: extensionmethodDayOfWeek() .
upvoted 1 times
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priyan14
3 years, 7 months ago
The extension suffix is myExtension, so it is wrong. The correct class name should end with _Extension
upvoted 10 times
pinticas
3 years, 7 months ago
This is it, it is about the incorrect suffix.
upvoted 2 times
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Anton_Venter
Highly Voted 4 years, 1 month ago
Should be A.
upvoted 5 times
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theCoder1
Most Recent 4 months ago
State Error ‌ Chain of command method must contain one next call
upvoted 1 times
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MicGiaco
4 months, 1 week ago
Selected Answer: B
It's incorrect because fist of all the class has both the CoC attributhe [ExtensionOF(..)], than the "exends" keyword that instead in used fo the overlaing. It should use only one of them
upvoted 2 times
theCoder1
2 months, 3 weeks ago
exactly more reason to be choose answer B
upvoted 1 times
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Yabad001
4 months, 2 weeks ago
Selected Answer: B
Severity Code Description Project Path File Line Suppression State Error The method 'ExtensionMethodDayofWeek' is in a class used for extension methods. The first parameter of a public extension method must be a class or a table indicating what type the method extends. Report (USR) [Report ] C:\AOSService\PackagesLocalDirectory\Bin\XppSource\Report C:\AOSService\PackagesLocalDirectory\Bin\XppSource\Report\AxClass_mySalesLineType_Extension.xpp 3 Error Extension class 'mySalesLineType_Extension' must be static and public or internal. Report (USR) [Report ] C:\AOSService\PackagesLocalDirectory\Bin\XppSource\Report C:\AOSService\PackagesLocalDirectory\Bin\XppSource\Report\AxClass_mySalesLineType_Extension.xpp 1
upvoted 1 times
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8933e4c
7 months, 1 week ago
Selected Answer: B
I prefer B, sice the question is about extending a class, not inheriting a class.
upvoted 1 times
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shyammo
8 months, 1 week ago
The coding is wrong. synatx is fine. Code to get day of the week is wrong.
upvoted 1 times
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NSIDEV
2 years, 6 months ago
Selected Answer: B
This example is not correct, although the class is decorated by "[extensionOf(...)]" and the name ends with _Extension, theres is the "extends " keyword wich is incorrect in an extension class (extends is only for derivated classes)
upvoted 2 times
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Evert2
2 years, 7 months ago
I believe someone messed up the questions vs discussion. The discussions are about a different question.
upvoted 5 times
yuri_rusanov
2 years, 4 months ago
It does indeed seem this way
upvoted 1 times
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Prollyx
3 years ago
Selected Answer: B
There is issue with the class name suffix "_myExtension", extension class has to end with "_Extension". Compiler would give you error with this code.
upvoted 2 times
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pjgallego
3 years, 2 months ago
Selected Answer: B
Correct B
upvoted 1 times
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faycal
3 years, 3 months ago
Correct is No: suffix of class extension must be “_Extension” otherwise you will get build error.
upvoted 2 times
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kornetmuse
3 years, 8 months ago
The problem is not about the compilation but about the value obtained. You should never manipulate dateTime to extract the date without applying a timeZone. In this piece of code depending of the time of the day you will not have the same result (unless you're in Great Britain of course :D). So B is the correct answer.
upvoted 1 times
kornetmuse
3 years, 8 months ago
I misplaced my comment. It will be more accurate on the other piece of code like this one. Because here the _myExtension is false.
upvoted 1 times
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Ariston
3 years, 9 months ago
Correct is No: suffix of class extension must be “_Extension” otherwise you will get build error.
upvoted 4 times
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Shyams2708
3 years, 9 months ago
Correct class naming convention should end with "_Extension" and not "_myExtension". Correct answer is B: No.
upvoted 2 times
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viking1
3 years, 9 months ago
B - "No". The class name doesn't end in "_Extension"
upvoted 1 times
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Azat
4 years ago
I agree agree with the comments posted above
upvoted 1 times
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