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IOS Technical Test MCQs

Which of the following is a valid JSON string?

{ "firstName": "John", "lastName": "Smith", "age": 25, "address": { "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" }, "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ] }

{ "firstName": "John", "lastName": "Smith", "age": 25, "address": { "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" }, "phoneNumber": { { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } } }

{ "firstName": 'John', "lastName": 'Smith', "age": 25, "address": { "streetAddress": '21 2nd Street', "city": 'New York', "state": 'NY', "postalCode": 10021 }, "phoneNumber": [ { "type": 'home', "number": 212 555-1234 }, { "type": 'fax', "number": 646 555-4567 } ] }

{ "firstName": "John", "lastName": "Smith", "age": 25, "address": [ "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" ], "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ] }

Answer

Correct Answer: { "firstName": "John", "lastName": "Smith", "age": 25, "address": [ "streetAddress": "21 2nd Street", "city": "New York", "state": "NY", "postalCode": "10021" ], "phoneNumber": [ { "type": "home", "number": "212 555-1234" }, { "type": "fax", "number": "646 555-4567" } ] }

Explanation:

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