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?（）

Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?（）

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?（）

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

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

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

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

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?（）