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Exam: 70-487 - MCSD Developing Windows Azure and Web Services
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Meghna Godhani

  • India
  • Apr 02, 2013
  • Report Comment

You are developing a WCF service. A new service instance must be created for each client session. You need to choose an instancing mode. Which instance mode should you use?

Ans: PerSession


  • Canada
  • Feb 21, 2013
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to Fog Gy,
I don't have the correct answer, but to me
Q15 is definitely ReadCommitted, based on my understanding of the transaction in SQL Server.

see here http://www.sqlserver-dba.com/2013/01/sql-server-how-to-use-read_commited_snapshot-isolation-level.html

the question is asking to prevent exclusive range locks, so ReadCommitted should be the right answer.

for Q31, I agree with you it should be Serializable

Amit Tripathi

  • India
  • Jan 21, 2013
  • Report Comment

A. PerCall

Fog Gy

  • Canada
  • Jan 15, 2013
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Exam A, Q15. You are developing an ASP.NET MVC application that reads and writes data from a SQL Server database. You need to prevent the application from reading data that is locked by other transactions. You also need to prevent exclusive range locks. Which isolation level should you use?
A. ReadCommitted
B. Serializable
C. Repeatable
D. ReadUncommitted (exam marks this one as correct)
Should it not be Repeatable?
Exam A, Q31 is also a similar question .. You need to maintain data integrity in all situations that use transactions.
A. ReadUncommitted
B. Repeatable
C. Serializable
D. ReadCommitted (Exam marks this one as correct)
Shouldn't it be Serializable?


  • Slovakia
  • Jan 09, 2013
  • Report Comment

I passed today 900, test A Question 18 was modified, both condition were based on "client", so answer should be Request/Reply (asynchronous calling was not mentioned) .. you have 2h 10m for test (11 questions for CS 1 , 22 general questions, 9 questions CS 2)


  • France
  • Jan 03, 2013
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@alex part 2

Exam C Q10 : Yes you're right, second one is "ExternalOrdersEntities". Ref : http://msdn.microsoft.com/en-us/library/bb738684.aspx
Exam C Q14 Right, it is "command.ExecuteNonQueryAsync()" and not "command.QueryAsync()"
Exam C Q16 Yes response is BCDE (inversion in inheritance)


  • France
  • Jan 02, 2013
  • Report Comment

Exam A, Q13 is A. Because you want to load deferred content. Ref : http://msdn.microsoft.com/en-us/library/dd728283.aspx
Exam B, Q2 are "InputEndpoint", "http", "80", "InputEndpoint", "tcp", "22"
Exam B, Q5 are "XmlWriteMode.DiffGram" and "XmlReadMode.DiffGram"
Exam B, Q9 : D is right because you send result as REST so if you use "AsQueryable" the result is deferred to the next enumeration of your result. D is not optimized but will works. A will break at runtime.
Exam B Q15 : I agree with your partition key but not your row key. WasLate is a Boolean which means whether the flight was late or not so. Anyway, the answer of the exam is still C and F.

Exam C to be continued


  • Australia
  • Dec 21, 2012
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I found quit a lot of mistakes of answers. Could anyone help me to validate them? Thanks!

Exam A, Q13, should it be B?
Exam B, Q2, what's the answer? Are they InputEndpoint, http, 80, InputEndpoint, tcp, 22??
Exam B, Q5, should they be XmlWriteMode.DiffGram and XmlReadMode.DiffGram?
Exam B, Q15, I would use Airline as partition key and WasLate as the row key. Any commit?
Exam B, Q9, why not A?
Exam C, Q16, shoult it be BCDE
Exam C, Q10, the second one should be "ExternalOrdersEntities". you could refer to Exam C Q3
Exam C, Q14, it should be command.ExecuteNonQueryAsync() because no method called "QueryAsync". Refer to Exam C, Q6


  • United Kingdom
  • Dec 11, 2012
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It is 100% valid. ExamKill.com prices are also low wrt to other dumps providers.


  • Canada
  • Nov 29, 2012
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"each client session" so it must be PerSession


  • Brazil
  • Nov 29, 2012
  • Report Comment

You are developing a WCF service. A new service instance must be created for each client session. You need to choose an instancing mode. Which instance mode should you use?

A. PerCall

B. Single

C. Multiple

D. PerSession

E. PerRequest

which is correct???

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