Computer Networking
Which of the following does not allow multiple users or devices to share one communications line?

multipplexer
controller
doubleplexer
concentrator
None of these

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Computer Networking
What is the purpose of Spanning Tree Protocol in a switched LAN?

To prevent switching loops in networks with redundant switched paths
To prevent routing loops in networks with redundant paths
To create collision domains
To provide a mechanism for network monitoring in switched environments
To manage the VLAN database across multiple switches

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Computer Networking
Which of the following series of commands will restrict Telnet access to the router?

Lab_A(config)#access-list 10 permit 172.16.1.1Lab_A(config)#line vty 0 4Lab_A(config-line)#access-class 10 out
Lab_A(config)#access-list 10 permit 172.16.1.1Lab_A(config)#line vty 0 4Lab_A(config-line)#access-class 10 in
Lab_A(config)#access-list 10 permit 172.16.1.1Lab_A(config)#line vty 0 4Lab_A(config-line)#ip access-group 10 in
Lab_A(config)#access-list 10 permit 172.16.1.1Lab_A(config)#line con 0Lab_A(config-line)#ip access-group 10 in

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