Computer Networking
The main difference between synchronous and asynchronous transmission is

None of these
the clocking is derived from the data in synchronous transmission
the bandwidth required is different
the pulse height is different.
the clocking is mixed with the data in asynchronous transmission

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Computer Networking
ICMP (Internet Control Message Protocol) is

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

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