Computer Networking
The synchronous modems are more costly than the asynchronous modems because

they operate with a larger bandwidth
they contain clock recovery circuits
None of these
they transmit the data with stop and start bits.
they produce large volume of data

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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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