多項(xiàng)選擇題Which two of these statements regarding RSTP are correct?()

A.RSTP cannot operate with PVST+.
B.RSTP defines new port roles.
C.RSTP defines no new port states.
D.RSTP is a proprietary implementation of IEEE 802.1D STP.
E.RSTP is compatible with the original IEEE 802.1D STP.


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1.單項(xiàng)選擇題A cisco router is booting and has just completed the POST process.It is now ready to find and load an IOSimage.what function does the router perform next?()

A.It checks the configuration register
B.It attempts to boot from a TFTP server
C.It loads the first image file in flash memory
D.It inspects the configuration file in NVRAM for boot instructions

2.單項(xiàng)選擇題Which command enables IPv6 forwarding on a cisco router?()

A.ipv6 host
B.ipv6 unicast-routing
C.ipv6 local
D.ipv6 neighbor

3.單項(xiàng)選擇題A system administrator installed a new switch using a script to configure it. IP connectivity was tested using pings to SwitchB. Later attempts to access NewSwitch using Telnet from SwitchA failed. Which statement is true?()

A.Executing password recovery is required.
B.The virtual terminal lines are misconfigured.
C.Use Telnet to connect to RouterA and then to NewSwitch to correct the error.
D.Power cycle of NewSwitch will return it to a default configuration.

4.多項(xiàng)選擇題

Refer to the exhibit.This command is executed on 2960Switch: 
2960Switch(config)# mac-address-table static 0000.00aa.aaaa vlan 10 interface fa0/1 
Which two of these statements correctly identify results of executing the command?()

A.Port security is implemented on the fa0/1 interface.
B.MAC address 0000.00aa.aaaa does not need to be learned by this switch.
C.Only MAC address 0000.00aa.aaaa can source frames on the fa0/1 segment.
D.Frames with a Layer 2 source address of 0000.00aa.aaaa will be forwarded out fa0/1.
E.MAC address 0000.00aa.aaaa will be listed in the MAC address table for interface fa0/1 only.

5.單項(xiàng)選擇題In the implementation of VLSM techniques on a network using a single Class C IP address,which subnet mask is the most efficient for point-to-point serial links?()

A.255.255.255.240
B.255.255.255.254
C.255.255.255.252
D.255.255.255.0
E.255.255.255.248

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