Computer Networking
Error control is needed at the transport layer because of potential errors occurring _____.

from packet losses.
from out-of-sequence delivery
in routers
from transmission line noise

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Computer Networking
You type the following command into the router and receive the following output:Router#show serial 0/0 ^% Invalid input detected at '^' marker.Why was this error message displayed?

You cannot have a space between serial and 0/0.
The router does not have a serial0/0 interface.
You need to be in privileged mode.
Part of the command is missing.

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Computer Networking
TCP is:

Connection orientated and unreliable
Connectionless and unreliable
None of these
Operates at the Data Link layer
Connection orientated and reliable

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