quiz 5 - A True B False 7 In Ethernet switches collisions...

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1. What do multiple access protocols do? A. Allow a host to access multiple channels B. Allow multiple hosts to access the same media 2. A channel is shared by two stations A and B. At time t=0, A and B have frames to send simultaneously. Consider Non-Persistant and 1-Persistant CSMA, which will generate a collision? A. Non-Persistant CSMA B. 1-Persistant CSMA C. Both 3. In p-Persistant CSMA, the followint situation could occur:"both station A and station B have data to transmit but neither is transmitting any data". A. True B. False 4. In CSMA/CD, a frame transmission could stop before the last bit is sent out. A. True B. False 5. CSMA/CD always works no matter what the frame size is. A. True B. False 6. In CSMA/CD, if there are a large number of hosts, then the probability of collision will increase. As a result, the hosts will likely to use large random number ranges.
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Unformatted text preview: A. True B. False 7. In Ethernet switches, collisions could occur among different ports. A. True B. False 8. In a token ring network, two hosts can send at the same time. A. True B. False 9. Ad Hoc wireless LANs do need central controllers. A. True B. False 10. In wireless LAN, multiple access points (APs) are interconnected through BSS. A. True B. False 11. In PCF mode, contention could occur. A. True B. False 12. In wireless LAN, reducing the IFS of a certain type of frames will increase their priority. A. True B. False 13. In wireless LANs, ACKs should be assigned larger IFS than data frames. A. True B. False 14. IEEE802.11a, b and g are working at the same frequency. A. True B. False 15. When a frame is delivered from a wireless LAN to a wireline Ethernet LAN, its frame structure is not changed. A. True B. False...
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quiz 5 - A True B False 7 In Ethernet switches collisions...

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