What is the result of segmenting a network with a bridge (switch)?
1.It increases the number of collision domains.
2.It decreases the number of collision domains.
3.It increases the number of broadcast domains.
4.It decreases the number of broadcast domains.
5.It makes smaller collision domains.
6.It makes larger collision domains.
Answer: A
Bridges break up collision domains, which would increase the number of collision domains in a network and also make smaller collision domains.
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You want to run the new 802.1w on your switches. Which of the following would enable this protocol?
Answer: A
802.1w is the also called Rapid Spanning Tree Protocol. It is not enabled by default on Cisco switches, but it is a better STP to run since it has all the fixes that the Cisco extensions provide with 802.1d.
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What is the purpose of Spanning Tree Protocol in a switched LAN?
Answer: C
The Spanning Tree Protocol (STP) was designed to stop layer 2 loops. All Cisco switches have the STP on by default.
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You need to allow one host to be permitted to attach dynamically to each switch interface. Which two commands must you configure on your catalyst switch to meet this policy?
1.Switch(config-if)# ip access-group 10
2.Switch(config-if)# switchport port-security maximum 1
3.Switch(config)# access-list 10 permit ip host 1
4.Switch(config-if)# switchport port-security violation shutdown
5.Switch(config)# mac-address-table secure
Answer: B
The switchport port-security is an important command, and it's super easy with the CNA; however, from the CLI, you can set the maximum number of MAC addresses allowed into the port, and then set the penalty if this maximum has been passed.
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What command will display the forward/filter table?
Answer: C
The command show mac address-table displays the forward/filter table on the switch.
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Which of the following statement is true?
Answer: B
Switches break up collision domains, and routers break up broadcast domains.
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