A technician needs to interconnect two offices to the main branch while complying with good practices and security standards. Which of the following should the technician implement?

MSRA (Microsoft Remote Assistance) is a remote desktop tool, not for secure site-to-site network interconnection.

VNC (Virtual Network Computing) is a graphical desktop sharing system, not designed for secure site-to-site network connectivity.

A Virtual Private Network (VPN) establishes a secure, encrypted connection over a less secure network, such as the internet, allowing two offices to connect to a main branch as if they were on the same private network. This meets security standards by protecting data in transit and ensures good practices for inter-office connectivity.

SSH (Secure Shell) is primarily used for secure remote command-line access or file transfers, not for interconnecting entire office networks.