.NET Question again?

Thanks to ppl that tried to answer before, BUT this is a QUIZ question (preparing to pass exams). I know the answer and i dont understand why it's like that. So please select the only 1 answer and explain it.





Which of the following answer is true and why?





Question: Which type of .Net application can be used to automate tasks and does not require a user to login?





a. Windows Form


b. Windows service


c. XML Web Service


d. Net remoting object





Thanks.





P.S. I do not post the right answer here on purpose :)

.NET Question again?
The question is misleading when it states the "automate tasks" portion. Although you can use Windows Services for this, they still require you to log-in to the Windows Machine to run them. An XML Web Service does not require log-in at the other endpoint (i.e. where it's being hosted), only authentication if set explicitly, and you can call methods to run "tasks" or logic that will do something for you.
Reply:The correct answer is B. When you create/install a windows service you specify which account the service should run under (normally Local Service). If you require you can run most services under a specific machine/domain account depending on your needs.
Reply:Just a guess but a net remoting object.





Tell me if i'm right.





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