Only the bottom layer of SONET has an actual correspondence to the OSI model.
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Q4: Current frame relay implementations can reach maximum
Q6: Circuit mode is most commonly employed in
Q7: The current practical limit for transmitting a
Q8: Frame relay uses only two communications layers:
Q9: Both switched and permanent virtual circuits are
Q9: The 1992 update of the X.25 protocol
Q11: Like some other WAN technologies,such as frame
Q15: In the _ mode service of an
Q16: A(n)_ is a network device that can
Q18: An ATM switched virtual circuit (ATM SVC)is
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