Answer / r.bala

In 3-tier Architecture, three layers are
1. Presentation Layer -> For Only Presentation & Post the
Data to Business Object layer & Vice versa
2. Business Object Layer -> For Verfication & Posting the
Data to Data Access Layer & Vice versa
3. Data Access Layer -> Deals with the Database
Ado.Net - Comes in DAL Layer ( Data Access Layer)
XML Webservies - Comes in BOL Layer (Business Object Layer)

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