Correcting physical and data-link layer problems

1. Identify the command that will allow the Cisco IOS software to return to the default LMI type on interface Serial 0/1. The LMI command is already set to the LMI type defined jointly by Cisco and three other companies.

Router(config)no frame-relay lmi-type ansi
Router(config-if)#no frame-relay lmi-type ansi
Router(config-if)#no frame-relay lmi-type cisco
Router(config-if)#no frame-relay lmi-type q933a




2. What end-system command would you use to delete a specific entry from an ARP table?

arp -a
arp -d ip-address
arp -s ip-address
arp -a -N interface_address



3. Which of the following commands activates an interface?

arp -d
clock rate
interface
no shutdown




4. What is the default encapsulation type on a synchronous serial interface?

Frame Relay
HDLC
PPP
SLIP