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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
Wireless Access Wireless access connecting end systems ( that are often mobile) into the network. Today there are two broad types of wireless internet access(1) wireless an
What is the command to copy the IOS image to a TFTP server? Ans) Copy flash tftp
Data Alignment Arrays are aligned to templates by the ALIGN directive. The ALIGN directive is used to align elements of different arrays with each other, indicating that they s
State the Network environment of Intranets and Internet Intranets as well as the Internet are based purely on networks, the company intending to install Intranet must consider
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Suppose that frames are 1250 bytes long including 25 bytes of overhead. Also assume that ACK frames are 25 bytes long. Calculate the efficiency of stop-and-wait ARQ (a) Transmits a
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In the transaction server, the client component usually consists of GUI and the server components usually having of SQL transactions against a database. These applications are know
When a P is returned when a Trace is run, it means the Protocol is unreachable.
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