According to scholar Sukumar Dutt, a vihara or university was linked with an Abbot (Adhyaksa), six gate protectors (Dvarapala), great scholars (Mahapandita), great teachers (Upadhyaya or Acharya) and resident monks (bhiksu). The university was

The description of an abbot, six gate protectors, great scholars, teachers and resident monks points to Vikramashila.

Its six dvarapalas, or gate scholars, guarded its academic standard at each entrance.

Vallabhi, though a noted centre, is not the seat Sukumar Dutt describes here.

Benaras, a temple town of learning, does not fit this monastic structure.

Nalanda shared such features, yet the six gatekeeper scholars are the mark of Vikramashila.

These gate scholars tested those who wished to enter and study.