Computer Networking
You have created a named access list called Blocksales. Which of the following is a valid command for applying this to packets trying to enter interface s0 of your router?

(config-if)# ip access-group Blocksales in
(config)# ip access-group 110 in
(config-if)# blocksales ip access-list in
(config-if)# ip access-group 110 in

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Computer Networking
The network layer, in reference to the OSI model, provide

the interface between the X.25 network and packet mode device
the virtual circuit interface to packet-switched service
All of these
data link procedures that provide for the exchange of data via frames that can be sent and received
None of these

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

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

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Computer Networking
You want to create a standard access list that denies the subnet of the following host: 172.16.50.172/20. Which of the following would you start your list with?

access-list 10 deny 172.16.64.0 0.0.31.255
access-list 10 deny 172.16.0.0 0.0.255.255
access-list 10 deny 172.16.48.0 0.0.15.255
access-list 10 deny 172.16.48.0 255.255.240.0

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