Management has requested an additional layer of remote access control to protect a critical database...

To add an extra layer of remote access control to a critical online database, using aproxy server combined with a VPNis the most effective method.

Proxy Server:Acts as an intermediary, filtering and logging traffic.

VPN:Ensures secure, encrypted connections from remote users.

Layered Security:Integrating both mechanisms protects the database by restricting direct public access and encrypting data in transit.

Benefit:Even if credentials are compromised, attackers would still need VPN access.

Incorrect Options:

A. Incremental backups:This relates to data recovery, not access control.

C. Implementation of group rights:This is part of internal access control but does not add a remote protection layer.

D. Encryption of data at rest:Protects stored data but does not enhance remote access security.

Exact Extract from CCOA Official Review Manual, 1st Edition:

Refer to Chapter 4, Section "Remote Access Security," Subsection "Securing RemoteAccess with VPNs and Proxies" - VPNs combined with proxies are recommended for robust remote access control.