Which command encrypts all plaintext passwords?（）

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

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

Which cisco ios command can help to determine the timing of various debug events,relative to each other,when you are debugging a complicated router issue?（）

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?（）

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

Which protocol reduces administrative overhead in a switched network by allowing the configuration of a new VLAN to be distributed to all the switches in a domain?（）

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

Which command is used to display the collection of OSPF link states?（）