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

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

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

Which command encrypts all plaintext passwords?（）

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?（）

At which layer of the OSI model is RSTP used to prevent loops?（）

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

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?（）

While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?（）

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