The network administrator cannot to switch 1 over a telnet session,although the hosts attached to switch 1 can ping the interface Fa0/0 of the router.Given the information in the graphic and assuming that the router and switch2 are configured properly,which of the following commands should be issued on switch 1 to correct this problem?（）

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

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

An employee of ABC company has move to an office on a different floor. Although the administrator is able to telnet to all of the routers,the address of Switch F is needed in order to verify that the employee remains in the same VLAN.Which action could be used by the administrator to find the IP address of Switch F?（）

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

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

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?（）

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

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

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