Data Communication Networks-IMP Questions with answers

Compare and Contrast Analog and Digital Transmission Wave Structure –          Analog o   an analog waveform o   similar to sound and light –          Digital o   a square waveform o   only two voltage levels, each representing binary 1s and 0s Transmission –          Analog o   Transmits by modulating a carrier wave’s frequency, amplitude, or phase o   Bandwidth will […]

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Frequently Asked Questions In Information/Network Security

 Frequently Asked Questions and their weight-age 1. Briefly describe the security services. (8) 2. Explain classical encryption techniques(Steps involved in each encryption technique like Caesar cipher, playfair cipher, hill cipher, vigenere cipher, one time pad cipher, rail fence, etc) 3. Explain about steganography,transposition cipher. 4. Describe the key generation of DES and encryption algorithm(8/16) 5. […]

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