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Repeaters
- Operate only in physical layer
- Connects two segments of the same LAN
- Both segments must be of the same protocol
- Only forwards frames; does not filter
Physical Configurations Transport signal multiplexer de multiplexer. It either signal from multiple sources into a STS singles or de multiplexes and STS signal into diffe
Demarcation is the point in which responsibility changes hands.
Q. Use of Infrared? - Frequencies among 300 GHz and 400 THz - Short-range communication - High frequencies can't penetrate walls - Necessitate line-of-sight propagati
What is the difference between a straight-through and crossover cable? A straight-through cable is used to connect computers to a hub, switch, or router. A crossover cable is u
Explain Wiretapping?
Q. Explain about line coding? Line Coding Procedure of converting binary data to a digital signal DC Components Residual dc (direct-current) components or
State the benefits of Infrared light Infrared light does not penetrate walls or other opaque objects. This has two benefits: First, infrared communications can be more simply
What are the features of Intranet Intranets provide access to electronic databases, documents, electronic training manuals, office circulars, internal job vacancies, etc. Any t
What is a pseudo tty? A pseudo tty or false terminal enables external machines to connect by Telnet or rlogin. Without a pseudo tty, no connection can take place.
Ring: It is a simple linear array where end nodes are associated. It is equal to a mesh with wrap around connections. The data transfer in a ring is generally one direction. So,
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