Computer Networking
Which of the following describes an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer 3 Network layer of the OSI model?

xDSL
VPN
HDLC
IPSec
Cable

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

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