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?

HDLC
xDSL
VPN
IPSec
Cable

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Computer Networking
HMP (Host Monitoring Protocol) is:

a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
a protocol used to monitor computers
a TCP/IP high level protocol for transferring files from one machine to another.
None of these
a protocol that handles error and control messages

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