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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
Router(config-if)# bandwidth 56
Assume the following 64-bit DES key (expressed in hexadecimal): FEFE FEFE FEFE FEFE (a) What is the term for such a key? (b) State the value of each of the 48-bit round keys
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State the Nyquist theorem The Nyquist theorem is thermo of mathematics and has nothing to deal with technology. It says that if you have the function whose Fourier spectrum doe
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Question : a) Explain why pervasive computing can be termed as a "technology that disappears". b) List and briefly explain four main components of a MOTE used in Wireless
study on FTP
Can you determine routing loop issue in RIP protocol?
IGRP uses flash updates, poison reverse updates, hold down times, and divide horizon. How often does it broadcast its routing table updates? Ans) 90 seconds
If a client gives a 4096-byte request to a server located 50 km away on a 1 Gbps fiber optic, then what is the efficiency of the line during this time? Suppose that the server give
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