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 13043

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

3 14681

What is In-proc?

4 24584

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 5185

What is a moniker ?

3 8677

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

2 7347

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

1 7000

Define and explain COM?

Microsoft,

8 30280

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

Microsoft,

3 10812

how you call a dll as a COM dll.

2 6505

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

8 18549

Differentiate normal DLL to COM DLL

Talisma,

7 22647

Futures of COM

MIT,

3 7745

how do you know it is general dll or com dll

5 10287

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

Wipro,

1 7294

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Un-Answered Questions { COM DCOM }

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

857

Is dcom dead?

810

How do we create dcom object in vb6?

888

Explain Futures of COM?

753

Can you explain what is dcom?

701

What are queued components?

782

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

784

What is the use of com component in .net?

772

Can I use .net components from com programs?

788

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?

701

What is reference counting in com?

732

What is the difference between aggregated and contained objects?

758

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

2335

Can I use com components from .net programs?

811

Define and explain about COM?

823

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