Which device might be installed at a branch office to enable and manage an IPsec site-to-site VPN?（）

Which IPsec security protocol should be used when confidentiality is required?（）

How are VTP advertisements delivered to switches across the network?（）

Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?（）

You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the max number of subnets.Which network address and subnet mask meet this requirement?（）

At which layer of the OSI model dose PPP perform?（）

An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?（）

Which address is the IPV6 all-RIP-routers muticast group address that is used by RIPng as the destaion address?（）

What is the purpose of the cisco Vlan Trunking protocol?（）

What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?（）