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

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

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Computer Networking
When setting up Frame Relay for point-to-point subinterfaces, which of the following must not be configured?

The Frame Relay encapsulation on the physical interface
The subinterface type as point-to-point
The local DLCI on each subinterface
An IP address on the physical interface
PAP

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