X.25 works at the ________ and ________ layers.
A.
Physical and Transport
B.
Network and Data Link
C.
Transport and Data Link
D.
Network and Physical
Explanation:
X.25 is a packet-switching technology that is used by
telecommunications services for data-only traffic. It is a subscriber-based service
that operates within the Network and Data Link layers.
I have the same idea. B
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