1. What do you mean by Transmission medium?
2. Define Guided Media and Unguided media.
3. What do you mean by Line coding?
4. What is the relationship between data element and signal element?
5. Describe data rate and signal rate.
6. Explain Bandwidth and what are the line coding scheme available?
7. How does NRZ – L differ from NRZ – I?
8. What do you mean Modem. Write down the standards available in modem.
9. Explain the mode for propagating light along optical channels.
10. What is the difference between a passive and an active hub?
11. What are the three criteria essential for effective and efficient networks?
12. Explain the seven layers of OSI Model in detail.