1. What is the primary function of the Network Interface Card (NIC)?
2. In Ethernet, what is the purpose of the preamble in a frame?
3. In Ethernet header, what is the purpose of the CRC?
4. In CSMA/CD, what happens after a collision is detected?
6. In CSMA/CA, what is the packet that is transmitted first to initiate the sending of data?
7. What is the purpose of a trunk port in VLANs?
8. Which of the following is NOT a function of the physical layer?
9. What type of signal varies continuously in time and amplitude?
10. What is the main advantage of fiber optic cabling over copper cabling?
11. What type of signal uses 1s and 0s for data transmission
