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Computer Science - Networking - Discussion

Discussion Forum : Networking - Section 3 (Q.No. 38)
Networking
38.
The physical layer, in reference to the OSI model, defines
data link procedures that provide for the exchange of data via frames that can be sent and received
the interface between the X.25 network and packet mode device
the virtual circuit interface to packet-switched service
All of the above
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.
Akash said:   6 years ago
X.25 is an ITU-T standard protocol suite for packet-switched wide area network (WAN) communication. An X.25 WAN consists of packet-switching exchange (PSE) nodes as the networking hardware, and leased lines, plain old telephone service connections, or ISDN connections as physical links.
Shewangizaw Bogale said:   8 years ago
Physical layer is the lowest layer of all. It is responsible for sending bits from one computer to another. It is not concerned with the meaning of the bits and deals with the physical connection to the network and with transmission and reception of signals. It supports the electrical or mechanical interface to the physical medium.
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