A.RIP
B.BGP
C.OSPF
D.EIGRP

A.hub
B.router
C.switch
D.STP
E.subinterfaces
F.VLAN

A.This is a 10 Mb/s switch port.
B.This is a 100 Mb/s switch port.
C.This is an Ethernet port operating at half duplex.
D.This is an Ethernet port operating at full duplex.
E.This is a port on a network interface card in a PC

A.IR
B.DSSS
C.FHSS
D.DSSS and FHSS
E.IR, FHSS, and DSSS 

A.ATM
B.IDS
C.IOS
D.IOX
E.IPS
F.SDM

A.Allow unrestricted access to the console or VTY ports.
B.Use a firewall to restrict access from the outside to the network devices.
C.Always use Telnet to access the device command line because its data is automatically encrypted.
D.Use SSH or another encrypted and authenticated transport to access device configurations.
E.Prevent the loss of passwords by disabling password encryption. 

A.IP
B.ICMP
C.TCP
D.UDP

A.ping
B.Telnet
C.FTP
D.TCP
E.IP

A.denial of service
B.brute force
C.reconnaissance
D.Trojan horse 

A.This command should be executed from the global configuration mode.
B.The IP address 10.121.16.8 is the local router port used to forward data.
C.102 is the remote DLCI that will receive the information.
D.This command is required for all Frame Relay configurations.
E.The broadcast option allows packets， such as RIP updates， to be forwarded across the PVC