單項選擇題What features set is most frequently used to prevent hackers from flooding a port with MAC- addresses?()

A.BPDU Guard
B.802.x
C.Port Security
D.Storm Control


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2.單項選擇題What is the statistical reserve?()

A.Bandwidth that is reserved for SVCs to route over a trunk
B.Bandwidth that is reserved on a trunk so that ABR connections can burst
C.Bandwidth on a trunk that is reserved for control traffic and cannot be used by connections
D.Bandwidth that cannot be allocated to connections but can be used to accommodate statistical variations in the traffic

3.單項選擇題What is TCI?()

A.Tag Calling Interface
B.Tag Control Identifier
C.ToS Class Interface
D.Tag Control Information

4.多項選擇題In which modes does selective packet discard(SPD)operate?()

A.normal
B.discard
C.random
D. full

5.多項選擇題Which two statements about VPLS are true? ()

A.There is a full mesh of pseudowires.
B.There is a partial mesh of pseudowires.
C.Only L2TPv3 can be used for pseudowire establishment.
D.There is split-horizon to avoid loops.

6.單項選擇題In the Apache Web Server configuration, the command KeepAlive ON is used to()

A.Allow a CSS to probe the server
B.Allow a connection to be closed with a TCP RESET
C.Allow persistent connections
D.Allow the use of HTTP HEAD request

7.多項選擇題Which of the following is reported in the LMI regular status polling?()

A.Addition or Deletion of PVC
B.PVC status (active or inactive)
C.Link integrity
D.None of the other alternatives apply

8.單項選擇題What is true regarding Cisco Network Registrar in Cable networks?()

A.It provides comprehensive Domain Name system
B.It provides DHCP administrative functionality
C.It provides TFTP server functionality.
D.All of the above are true

9.單項選擇題What does UDLD stand for?()

A.UniDirectional Loop Detection
B.Unspecified Distribution Label Detection
C.Unified Distribution Label Direction
D.UniDirectional Link Detection

10.單項選擇題What will significantly degrade DSL performance, regardless of DSL rate or line length? ()

A.Microliters installed between a telephone and shared line
B.POTS splitters at the subscriber’s end of the DSL line
C.POTS splitters at the telco CO
D.None of the other alternatives apply

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