1. What protocol does PPP use to identify the Network layer protocol?
A NCP
B ISDN
C HDLC
D LCP
A. Network Control Protocol is used to help identify the Network layer protocol used in the packet.
2.How often are BPDUs sent from a layer 2 device?
A. Nerver
B.Every tow seconds
C.Every 10 minutes
D.Every 30 seconds
B. To see the contents of all access lists, use the show access-lists command.
3.How do you copy a router IOS to a TFTP host?
A.copy run starting
B.copy start running
C.copy running tftp
D.copy flash tftp
D. The command used to copy a configuration from a router to a TFTP host is copy flash tftp.
4. In a network with dozens of switches , how many root bridges would you have?
A.1
B.2
C.5
D.12
A. You should have only one root bridge per network.
5.If an interface is administratively down, what is the problem?
A. The interface is bad
B. The interface is not connected to another device
C.There is no problem
D. The interface is looped
