A.to prevent unauthorized Telnet access to a switch port
B.to limit the number of Layer 2 broadcasts on a particular switch port
C.to prevent unauthorized hosts from accessing the LAN
D.to protect the IP and MAC address of the switch and associated ports
E.to block unauthorized access to the switch management interfaces over common TCP ports
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A.a switch with a trunk link that is configured between the switches
B.a router with an IP address on the physical interface that is connected to the switch
C.a switch with an access link that is configured between the switches
D.a router with subinterfaces configured on the physical interface that is connected to the switch
A.Flash,TFTPserver,ROM
B.Flash,NVRAM,ROM
C.ROM,NVRAM,TFTPserver
D.NVRAM,TFTPserver,ROM
E.TFTPserver,F(xiàn)lash,NVRAM
根據(jù)下圖,Switch1剛剛完成重啟,并完成上電自檢。HostA發(fā)送它的第一個偵到HostC,交換機(jī)首先會對switching table做什么操作()
A.Switch1會添加192.168.23.4到switchingtable
B.Switch1添加192.168.23.12到switchingtable
C.Switch1添加000A 8A47.E612到switchingtable
D.Switch1添加000B DB95.2EE9到switchingtable
A.IR
B.DSSS
C.FHSS
D.DSSS and FHSS
E.IR,F(xiàn)HSS,and DSSS
A.permit all packets matching the first three octets of the source address to all destinations
B.permit all packets matching the last octet of the destination address and accept all source addresses
C.permit all packets from the third subnet of the network address to all destinations
D.permit all packets matching the host bits in the source address to all destinations
E.permit all packets to destinations matching the first three octets in the destination address
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