9 Apr, 2007
VB Interview Questions
- How do you register a component? Expected answer: Compiling the component, running REGSVR32 MyDLL.dll
- Name and explain the different compatibility types when creating a COM component. Expected answer: No Compatibility ? New GUID created, references from other components will not workProject Compatibility ? Default for a new component <Not as critical to mention this one>Binary Compatibility ? GUID does not change, references from other components will work
- Why iss it important to use source control software for source code? Expected answer: Modification history.Code ownership: Multiple people can not modify the same code at the same time.
- What two methods are called from the ObjectContext object to inform MTS that the transaction was successful or unsuccessful? Expected answer: SetComplete and SetAbort.
- What is the tool used to configure the port range and protocols for DCOM communications? Expected answer: DCOMCONFIG.EXE
- What does Option Explicit refer to? Expected answer: All variables must be declared before use. Their type is not required.
- What are the different ways to Declare and Instantiate an object in Visual Basic 6? Expected answer: Dim obj as OBJ.CLASS with eitherSet obj = New OBJ.CLASS orSet obj = CreateObject(?OBJ.CLASS?) orSet obj = GetObject( ,? OBJ.CLASS?)orDim obj as New OBJ.CLASS
- Name the four different cursor types in ADO and describe them briefly. Expected answer: The cursor types are listed from least to most resource intensive.Forward Only ? Fastest, can only move forward in recordset Static ? Can move to any record in the recordset. Data is static and never changes.KeySet ? Changes are detectable, records that are deleted by other users are unavailable, and records created by other users are not detectedDynamic ? All changes are visible.
