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

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?（）

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 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?（）

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?（）

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?（）

Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?（）