单项选择题 When dealing with transparent caching, where should the Content Engines be placed?（）

单项选择题 The VPN termination function provides the ability to connect two networks together securely over the internet. Which of these is true of IP addressing with regard to VPN termination?（）

多项选择题 Acme Costume Company is connecting its manufacturing facilties to its stores with a small pointto-multipoint Frame Relay IP WAN. Little growth is expected in the network infrastructure.Up to this point the company has been using a dial-on-demand network. Dropping WAN costs, however, have led them to consider using a high-speed WAN solution to improve access. Which two routing protocols could you deploy to support the new larger network while keeping costs down?（）