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Q. Presentation layer of osi reference model?
- The presentation layer makes sure that the information that the application layer of one system sends out is readable by the application layer of another system.
- If necessary the presentation layer translates among multiple data formats by using a common format.
- Provides encryption as well as compression of data.
- Examples: - MPEG, ASCII, JPEG, EBCDIC, HTML.
Q. Advantages of Fiber Optics? - Higher bandwidth in comparison to twisted-pair and coaxial cable is not limited by medium but by equipment used to generate and receive signals
telecommunication processors
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Q. What are the Tools sued for Cryptography and Web Security? Tools - Cryptography VPN - remote access PGP - email Dedicated Circuits -tunnels' - IPSec
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To model a WAN, we need a graph in which the nodes model switches and the edges model direct join between switches. The modeling saves essence of network, and it ignores attached d
Explain the different asymmetric algorithms?
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