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COM DCOM Interview Questions
Questions Answers Views Company eMail

What happens when client calls CoCreateInstance?

Cap Gemini,

2 11437

What is the difference, if any, between OLE and COM?

3 11172

What is In-proc?

4 22444

Let?s assume we have object B and aggregated object C (in- proc server), created by B. Can you access any interface of B from C? What?s the difference between aggregated and contained objects?

3 3774

What is a moniker ?

3 6903

C is aggregated by B, which in turn aggregated by A. Our client requested C. What will happen?

2 5661

How to Use structs in COM interfaces when Automation compatibility is not an issue?

1 5922

Define and explain COM?

Microsoft,

8 26226

Do COM keep track of all the object references(Accounting)?

Microsoft,

3 9044

how you call a dll as a COM dll.

2 5032

When you call CoInitialize(NULL) function how it works internally.

8 15188

Differentiate normal DLL to COM DLL

Talisma,

7 19557

Futures of COM

MIT,

3 6008

how do you know it is general dll or com dll

5 8092

Write a JCL to copy only selected members from a partitioned data set to another partitioned data set. (Use: IEBCOPY)

Wipro,

1 6232


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Un-Answered Questions { COM DCOM }

Define and explain about COM?

167


Can I use .net components from com programs?

155


What is the difference between aggregated and contained objects?

174


How do we create dcom object in vb6?

141


How to create an instance of the object in COM?

162






Which namespace do the classes, allowing you to support COM functionality, are located?

1661


What is reference counting in com?

130


What is dcom?

134


Does .net replace com?

147


Can I use com components from .net programs?

143


Suppose we have object b and aggregated object c (in- proc server), created by b. Can you access any interface of b from c? What?s the difference between aggregated and contained objects?

136


Once I have developed the com wrapper do I have to still register the com in registry?

135


Suppose we have object B and aggregated object C (in- proc server), created by B. Can you access any interface of B from C?

161


What are queued components?

166


Can you explain what is dcom?

129