What is the subnetwork address for a host with the IP address 201.100.5.68/28?（）

Which pairing reflects a correct protocol-and-metric relationship?（）

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 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?（）

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?（）

On which options are standard access list based?（）

If all OSPF routers in a single area are configured with the same priority value,what value dose a router use for the ODPF router ID in the absence of a loopback interface?（）

Which statement is true, as relates to classful or classless routing?（）

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