Step 1: Examine the pertinent sections of the IT Act, 2000, focusing on provisions related to Certifying Authorities. \[\begin{array}{rl} \bullet & \text{Section 28 concerns the authority to investigate violations.} \\ \bullet & \text{Section 29 addresses access to computer systems and data.} \\ \bullet & \text{Section 30 specifies procedures that a Certifying Authority must adhere to.} \\ \bullet & \text{Section 32 concerns the process of surrendering a license.} \\ \end{array}\]
Step 2: Understand the question's objective. Although the explicit requirement to "display" a license is found in the Information Technology (Certifying Authority) Regulations, 2001, Section 30 of the IT Act is the most applicable among the listed sections. It stipulates that Certifying Authorities must comply with particular operational and certificate integrity procedures. The display of a license can be seen as one of these necessary procedures for ensuring transparency and building trust.