What is the default administrative distance of OSPF?（）

Three access ports have been installed and configured to a small office.What term defines the wireless topology?（）

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?（）

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

Which command displays the CHAP authentication process as it occurs between two routers?（）

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

A router receives information about network 192.168.10.0/24 from multiple sources.What will the router consider the most reliable information about the path to that network?（）

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?（）

When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?（）