单项选择题 To securely transport EIGRP traffic, a network administrator will build VPNs between sites. What is the best method to accomplish the transport of EIGRP traffic?（）

单项选择题 A network vulnerability scanner is part of which critical element of network and system security?（）

单项选择题 You are the Cisco Network Designer in Cisco.com. You are designing an e-Commerce module, which routing statement is correct?（）