📖 4. Digital Transmission

📖 From Data Communication and Networks • 269 questions available

About 4. Digital Transmission

Digital transmission involves sending discrete binary signals (0s and 1s) across a channel using various encoding techniques to ensure the receiver can accurately synchronize and interpret the data. Common methods include unipolar, polar, bipolar, and Manchester encoding, each designed to solve specific problems like baseline wandering, loss of synchronization, or DC components, ensuring that the clock timing can be recovered even during long sequences of identical bits.

Beyond simple encoding, digital transmission often employs block coding and scrambling to improve error detection capabilities and maintain signal density without increasing bandwidth requirements. Pulse Code Modulation (PCM) and Delta Modulation are also used to digitize analog sources like voice before transmission, allowing digital networks to carry traditionally analog traffic with greater noise immunity and easier regeneration over long distances.

Practice MCQs for 4. Digital Transmission. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-31