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Q. Explain physical layer of Osi reference model?
- The physical layer deals among the physical characteristics of the transmission medium.
- It defines the mechanical, electrical, procedural and functional specifications for maintaining, activating and deactivating the physical link between end systems.
- Such characteristics like timing of voltage changes, voltage levels, physical data rates, maximum transmission distances, physical connectors and other similar attributes are defined by physical layer specifications.
- Instances RJ45, EIA/TIA-232 and NRZ
Define Decoder? A device or program that translates encoded data into its original format (e.g. it decodes the data). The term is often used in reference to MPEG-2 video and so
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Two hosts are connected by a path made of four links as shown in the figure below. The links are of data rate R = 2 Mbps each. Host A has a file of size F = 1,000,000 bytes to tran
An industry standard suite of protocols for the use of point-to-point links to transport multiprotocol datagrams.
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Difference among the communication and transmission. Transmission is a physical movement of information and concern issues like bit polarity, synchronisation, clock etc. Com
(a) You are provided with the following: A. An RSA facility complete with public/private key pair B. A CBC (cipher block chaining) facility incorporating the IDEA block ciph
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