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 12561

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

3 13876

What is In-proc?

4 23904

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 4725

What is a moniker ?

3 8129

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

2 6638

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

1 6643

Define and explain COM?

Microsoft,

8 29332

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

Microsoft,

3 10227

how you call a dll as a COM dll.

2 6020

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

8 17427

Differentiate normal DLL to COM DLL

Talisma,

7 21771

Futures of COM

MIT,

3 7241

how do you know it is general dll or com dll

5 9629

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

Wipro,

1 6950

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Un-Answered Questions { COM DCOM }

What is dcom?

535

What is reference counting in com?

549

What are queued components?

584

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?

501

Can you explain what is dcom?

541

how to call a dll as a COM dll?

710

Does .net replace com?

555

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

652

Define and explain about COM?

606

How to create an instance of the object in COM?

571

Can I use .net components from com programs?

602

Is dcom dead?

619

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

2100

Explain Futures of COM?

576

What is the difference between aggregated and contained objects?

565

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