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

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

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

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?（）

On which options are standard access list based?（）

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?（）

What is the purpose of the cisco Vlan Trunking protocol?（）

What is the subnetwork address for a host with the IP address 201.100.5.68/28?（）

A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（）

A network administrator needs to configure a serial link between the main office and a remote location.The router at the remote office is a non-cisco router. How should the network administrator configure the serial interface of the main office router to make the connection?（）