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

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

When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?（）

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

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

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?（）

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?（）

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

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