Endsem Exam Questions: Unit 4 Pattern Matching Architecture Q1. Explain the architectural necessity of Regular Expressions for data validation. Validating complex string formats—such as email addresses or passwords—using standard conditional loops requires bloated, fragile substring extraction logic. Regular Expressions (RegExp) define complex validation rules in a single, condensed pattern. The JavaScript engine delegates RegExp execution to highly optimized, underlying C/C++ libraries, providing massive performance superiority over manual JavaScript loops. Q2. Differentiate between Literal and Constructor notation in RegExp instantiation. Literal notation encloses the pattern in forward slashes (e.g., /pattern/i). The JavaScript engine compiles literals at load time. This provides optimal performance for static patterns that do not change during execution. ...