Chapter 3 Understand the function of Digital Telephone Exchange MCQs

21 min Score: 0 Attempted: 0/21 Subscribe
1. Devices used in digital exchange for switching are:





2. Switching is controlled in digital exchange with:





3. Digital exchange switching is used:





4. In digital exchange, the subscriber lines are connected to:





5. A process in which a number of signals are transmitted on one channel is called:





6. Frequency division multiplexing is used in:





7. Frequency of subgroup in FDM band is:





8. In pulse code modulation, code is used:





9. PCM system used in Pakistan is:





10. There are channels used in Pakistan in PCM system:





11. Frequency band of telephone channel is:





12. Sampling frequency in PCM is:





13. Sampling frequency is ______ than the signal:





14. A PCM word consists of:





15. One of the following is a digital signal:





16. There are number of time slots in primary digital carrier:





17. The bit rate of primary digital carrier is:





18. Fax works like a:





19. Fax documents are sent by:





20. MODEM converts:





21. In data communication, data on telephone line is in form of:





Contents Copyrights Reserved By T4Tutorials