The version number of an assembly consists of the following four parts: 1. Major Version 2. Minor Version 3. Build Number 4. Revision Number. Default is 1.0.0.0Good t o know: An assembly majorly consists of two parts: One is Manifest and other is Intermediate Language. While further a manifest consists of 4 Parts: 1. Simple textual name. 2. Version number. 3. Culture information 4. Public key token