Exam 70-483 All Questions

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Exam 70-483 topic 1 question 9 discussion

Actual exam question from Microsoft's 70-483

Question #: 9
Topic #: 1

You are developing an application. The application converts a Location object to a string by using a method named WriteObject. The WriteObject() method accepts two parameters, a Location object and an XmlObjectSerializer object.
The application includes the following code. (Line numbers are included for reference only.)

You need to serialize the Location object as a JSON object.
Which code segment should you insert at line 20?

A. New DataContractSerializer(typeof(Location))
B. New XmlSerializer(typeof(Location))
C. New NetDataContractSenalizer()
D. New DataContractJsonSerializer(typeof(Location))

Show Suggested Answer

Suggested Answer: D 🗳️
The DataContractJsonSerializer class serializes objects to the JavaScript Object Notation (JSON) and deserializes JSON data to objects.
Use the DataContractJsonSerializer class to serialize instances of a type into a JSON document and to deserialize a JSON document into an instance of a type.

by ArunPrem at Nov. 22, 2019, 2:28 a.m.

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andyrays

Highly Voted 5 years ago

For those confused like me: DataContractSerializer and DataContractJsonSerializer both inherit from the abstract base class XmlObjectSerializer. However, DataContractJsonSerializer outputs JSON, while DataContractSerializer outputs XML. Therefore DataContractJsonSerializer is the correct answer.

upvoted 7 times

mameenkhn

4 years, 8 months ago

This is the correct reason. This is what we call Polymorphism in Object Oriented.

upvoted 2 times

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zzMichielzz

Most Recent 4 years, 9 months ago

D. Json + DataContract =>DataContractJsonSerializer

upvoted 2 times

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ebao

4 years, 9 months ago

The answer should be A because the question says [DataContract]

upvoted 1 times

ebao

4 years, 9 months ago

sorry i am wrong. D is correct.

upvoted 1 times

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lh2607

5 years ago

D is correct

upvoted 1 times

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robinnirola

5 years, 2 months ago

Ans D: New DataContractJsonSerializer(typeof(Location)) it is asking for Json so Ans D is for JSon Object

upvoted 1 times

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ArunPrem

5 years, 7 months ago

The questions says "The WriteObject() method accepts two parameters, a Location object and an XmlObjectSerializer object." but the answer is given as D which is DataContractJsonSerializer. Both the DataContractJsonSerializer and the DataContractSerializer has the ReadObject and WriteObject. So here the question has an ambiguity.

upvoted 2 times

mendolf92

5 years, 5 months ago

But its pointed out: "You need to serialize the Location object as a JSON object", therefore the result is D because the DataContractSerializer would return a xml

upvoted 9 times

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tanujgyan

5 years, 3 months ago

Exactly DataContractJsonSerializer - JSON DataContractSerializer - XML

upvoted 2 times

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