Objective 1. The Inner conductor of coaxial cable is made up of copper. 2. In unguided media signals are broadcasted through free space. 3. Circuit Switched networks have low efficiency but minimal delay. 4. 2 mcqs related to ARP. 5. Data link layer is between physical and network layer. 6. Mcq related to redundancy. 7. CRC codes use polynomial division to generate a check sequence. 8. CSMA/CA was invented for wireless networks. 9. POP stands for points of presence. 10. Sonet layers se mcqs the. 11. Wireless communication is fastest growing technologies. 12. ESS stands for Extended Service Set. 13. Bluetooth Lan is an ad hoc network. 14. Hub operates in the physical layer. 15. Switches connect heterogeneous devices. 16. Redundant switches create loops in the system. 17. FTTH se mcq aya tha