单项选择题
At which OSI layer is a logical path created between two host systems?（）
A.session
B.transport
C.network
D.data link
E.physical
相关考题
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多项选择题
Whatthreepiecesofinformationcanbeusedinanextendedaccesslisttofiltertraffic?(Choosethree.)（）
A.protocol
B.VLAN number
C.TCP or UDP port numbers
D.source switch port number
E.source IP address and destination IP address
F.source MAC address and destination MAC address -
单项选择题
Youandaco-workerhaveestablishedwirelesscommunicationdirectlybetweenyourwirelesslaptops.Whattypeofwirelesstopologyhasbeencreated?（）
A.BSS
B.ESS
C.IBSS
D.SSID -
单项选择题
Duringstartup,therouterdisplaysthefollowingerrormessage:boot:cannotopen"flash:"Whatwilltherouterdonext?（）
A.Because of damaged flash memory， the router will fail the POST
B.It will attempt to locate the IOS from a TFTP server. If this fails， it will initiate the setup dialog.
C.It will attempt to locate the IOS from a TFTP server. If this fails， it will load a limited IOS from ROM
D.It will attempt to locate the configuration file from a TFTP server. If this fails， it will initiate the setup dialog.
E.It will attempt to locate the configuration file from a TFTP server. If this fails， it will load a limited configuration from ROM
