单项选择题

Which VoIP components can permit or deny a call attempt on the basis of a network’s available bandwidth？（）

A.MCU
B.Application server
C.Gateway
D.Gatekeeper

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单项选择题

What is the objective of Diffie-Hellman？（）

A.used to verify the identity of the peer
B.used between the initiator and the responder to establish a basic security policy
C.used to establish a symmetric shared key via a public key exchange process
D.used for asymmetric public key encryption

单项选择题

Which type of MAC address is dynamically learned by a switch port and then added to the switch’s runningconfiguration？（）

A.Static secure MAC address
B.Dynamic secure MAC address
C.Pervasive secure MAC address
D.Sticky secure MAC address

单项选择题

As a network engineer at Certpaper.com， you are responsible for Certpaper network. Which will benecessarily taken into consideration when implementing Syslogging in your network？（）

A.Enable the highest level of Syslogging available to ensure you log all possible event messages
B.Use SSH to access your Syslog information
C.Log all messages to the system buffer so that they can be displayed when accessing the router
D.Syncronize clocks on the network with a protocol such as Network Time Protocol