COM DCOM Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

COM DCOM Interview Questions

Questions Answers Views Company eMail

What happens when client calls CoCreateInstance?

Cap Gemini,

2 13082

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

3 14739

What is In-proc?

4 24626

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 5235

What is a moniker ?

3 8715

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

2 7398

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

1 7043

Define and explain COM?

Microsoft,

8 30366

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

Microsoft,

3 10860

how you call a dll as a COM dll.

2 6539

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

8 18652

Differentiate normal DLL to COM DLL

Talisma,

7 22744

Futures of COM

MIT,

3 7798

how do you know it is general dll or com dll

5 10357

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

Wipro,

1 7333

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Un-Answered Questions { COM DCOM }

Can I use com components from .net programs?

842

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

2359

What are queued components?

811

How to create an instance of the object in COM?

792

Is dcom dead?

828

What is reference counting in com?

749

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

869

What is the use of com component in .net?

789

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?

724

What is the difference between aggregated and contained objects?

776

How do we create dcom object in vb6?

907

Does .net replace com?

754

Define and explain about COM?

844

Can I use .net components from com programs?

813

how to call a dll as a COM dll?

941

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