多項選擇題What are two security appliances that can be installed in a network? (Choose two.)（）  

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


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1.多項選擇題What are two recommended ways of protecting network device configuration files from outside network security threats? (Choose two.)（）

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. 

5.單項選擇題The command frame-relay map ip 10.121.16.8 102 broadcast was entered on the router. Which of the following statements is true concerning this command？（）

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