UGC NET Questions (Paper – 1)

Two factor authentication combines two different categories of credentials, typically something the user knows (password) and something the user has (a mobile device or token). This greatly strengthens account security compared to single factor methods. ICT systems increasingly adopt 2FA to protect sensitive data and services. Therefore, the mechanism described is two factor authentication.

Option A:
Option A is correct because requiring both a password and a code from a separate device fits the definition of two factor authentication.

Option B:
Option B, single factor, authentication would rely on only one credential type, such as a password, and does not describe the extra verification step.

Option C:
Option C, biometric only, authentication uses physical characteristics like fingerprints but may still be single factor if used alone and does not necessarily involve one time codes.

Option D:
Option D, open, authentication has no clear meaning in security practice and certainly does not capture strengthened, multi step verification.