What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?
- VPN
- ATM
- ISDN
- municipal Wi-Fi
Explanation: ISDN and ATM are Layer 1 and 2 technologies that are typically used on private WANs. Municipal WiFi is a wireless public WAN technology. Corporate communications over public WANs should use VPNs for security.
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