單項選擇題A network engineer wants to allow a temporary entry for a remote user with a specific usename and password so that the user can access the entire network over the internet.which ACL can be used?()

A.reflexive
B.extended
C.standard
D.dynamic


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A.Administratively shut down the interface.
B.Physically secure the interface.
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D.Configure a virtual terminal password and login process.
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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.
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3.多項選擇題Which two of these are characteristics of the 802.1Q protocol?()

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B.it includes an 8-bit field which specifies the priority of a frame.
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D.it modifies the 802.3 frame header,and thus requires that the FCS be recomputed.
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B.FDDI
C.Frame Relay PVC
D.NBMA
E.Frame Relay SVC

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