多項選擇題Which two statements apply to dynamic access lists?（）

A.they offer simpler management in large internetworks.
B.you can control logging messages.
C.they allow packets to be filtered based on upper-layer session information.
D.you can set a time-based security policy.
E.they provide a level of security against spoofing.
F.they are used to authenticate individual users.


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1.多項選擇題Which two of these are characteristics of the 802.1Q protocol?（）

A.it is a layer 2 messaging protocol which maintains vlan configurations across network.
B.it includes an 8-bit field which specifies the priority of a frame.
C.it is used exclusively for tagging vlan frames and dose not address network reconvergence following switched network topology changes.
D.it modifies the 802.3 frame header,and thus requires that the FCS be recomputed.
E.it is a trunking protocol capable of carring untagged frames.

3.多項選擇題Which two data link layers are supported by cisco ios software for IPv6?（）

A.PPP
B.FDDI
C.Frame Relay PVC
D.NBMA
E.Frame Relay SVC

4.單項選擇題

Refer to the exhibit.Give this output for SwitchC， what should the network administrator’s next action be？（）

A.Check the trunk encapsulation mode for SwitchC’s fa0/1 port.
B.Check the duplex mode for SwitchC’s fa0/1 port.
C.Check the duplex mode for SwitchA’s fa0/2 port.
D.Check the trunk encapsulation mode for SwitchA’s fa0/2 port.

5.單項選擇題Which PPP subprotocol negotiates authentication options?（）

A.NCP
B.LCP
C.ISDN
D.DLCI
E.SLIP