In the ShowData security example, which user ID would grant access to the data?

In the ShowData security example, which user ID would grant access to the data?

• A. 4567
• B. 1234
• C. Any user
• D. No user

Answer: (A)

Access is controlled by verifying who you are and whether that identity is allowed to see the data. In ShowData, the data is accessible only to a specific, preapproved user ID. That means the ID that matches the allowlist is granted access, which in this case is the ID 4567. When a user with that ID authenticates, authorization permits viewing the data. The other options don’t fit because 1234 isn’t on the allowed list, letting it be denied; allowing any user would make the data public and violate the restriction; and allowing no one would block even the legitimate access. This illustrates the idea of an allowlist: only explicitly approved identities get access.

Access is controlled by verifying who you are and whether that identity is allowed to see the data. In ShowData, the data is accessible only to a specific, preapproved user ID. That means the ID that matches the allowlist is granted access, which in this case is the ID 4567. When a user with that ID authenticates, authorization permits viewing the data. The other options don’t fit because 1234 isn’t on the allowed list, letting it be denied; allowing any user would make the data public and violate the restriction; and allowing no one would block even the legitimate access. This illustrates the idea of an allowlist: only explicitly approved identities get access.