68. When securing Internet connections which of the following should be used to protect internal routing and labeling schemes?

Вариант ответа 1 - A. Virtual Private Networks (VPN)

Вариант ответа 2 - B. Layer 2 Tunneling Protocol (L2TP)

Вариант ответа 3 - C. Domain Name Systems (DNS)

Вариант ответа 4 - D. Network Address Translation (NAT)