You Are Tasked with Implementing a 1000-Phone Remote Access Solution

Multiple Choice

You are tasked with implementing a 1000-phone remote access solution, where phone calls will traverse a WAN edge router. Assuming all of the following features are supported in a hardware- assisted manner, which of the following will have the most negative impact on the delay of the packet?

A) encryption
B) stateful firewall
C) MPLS encapsulation
D) GRE encapsulation