多项选择题
Which two tasks does the Dynamic Host Configuration Protocol perform?（）
A.Set the IP gateway to be used by the network.
B.Perform host discovery used DHCPDISCOVER message.
C.Configure IP address parameters from DHCP server to a host.
D.Provide an easy management of layer 3 devices.
E.Monitor IP performance using the DHCP server.
F.Assign and renew IP address from the default pool.
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多项选择题
What are two characteristics of Telnet (Choose two.)（）。
A.Itsendsdataincleartextformat.
B.ItisnolongersupportedonCisconetworkdevices.
C.ItismoresecurethanSSH
D.Itrequiresanenterpriselicenseinordertobeimplemented.
E.ItrequiresthatthedestinationdevicebeconfiguredtosupportTelnetconnections. -
单项选择题
Refer to the exibit. Three cisco 2950 switches are set to their default priority settings.During the spanning-tree process，which switch will be elected as the root bridge？（）
A.Switch3
B.Switch4
C.Switch2
D.Switch1 -
单项选择题
What speeds must be disabled in a mixed 802.11b/g WLAN to allow only 802.11g clients to connect?（）
A.6，9，12，18
B.1，2，5.5，6
C.5.5，6，9，11
D.1，2，5.5，11
