1. TRUE or FALSE (20 points) Tor F: Assuming other factors are the same, IEEE 802.11a has larger wireless coverage than

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1 True Or False 20 Points Tor F Assuming Other Factors Are The Same Ieee 802 11a Has Larger Wireless Coverage Than 1 (58.27 KiB) Viewed 59 times

1. TRUE or FALSE (20 points) Tor F: Assuming other factors are the same, IEEE 802.11a has larger wireless coverage than 802.11b. 2) Tor F: The payload size of a WiMAX packet could be zero. 3) Tor F: The WiMAX uplink channel descriptor (UCD) describes the uplink burst profile (.c.. modulation and coding combination) and preamble length for each UL burst. 4) Tor F: NR stands for New Radio - the wireless communication technology used in 4G. 5) Tor F: The RTS/CTS could solve the exposed terminal problem in wireless, but it also introduces a new problem called hidden terminal problem. 6) Tor F: Assuming all other factors are the same, you could improve the design of the receiver, such as using circuits with better signal sensitivity, to increase the wireless communication distance 7) Tor F: WiFi typically uses CSMA/CD as the MAC layer access control mechanism. 8) Tor F: OFDM was applied to IEEE 802.11b. 9) Tor F: 802.11a and 802.11g devices are compatible to cach other. 10) Tor F: When wireless channel is noisy and the BER is high, packet fragmentation is preferred. 11) Tor F: One disadvantage of packet fragmentation is the overhead due to packet header. 12) Tor F: Initial Ranging and Bandwidth Request frames in WiMAX are contention-free. 13) T or F In WiMAX QoS scheduling, low priority queues could be starved if higher priority queues saturate the output 14) Tor F: Aggregating traffic and duty cycle control are two reasonable approaches to save energy in lots. 15) Tor F: Data traffic pattern in lots is similar to the data traffic pattern in TCP/IP internet. 16) Tor F: The Bluetooth device running in a star network structure can communicate with up to 8 clients simultaneously 17) Tor F: Idle listening consumes significant energy in lots, therefore duty cycling is used to reduce energy consumption. 18) T or P: Periodic listening and sleep in lots can reduce both energy consumption and network latency. 19) T or F: Assuming all other factors are the same, using 10% duty cycle in IoTs achieves better energy saving than using 20% duty cycle. 20) Tor F: In the design of Sensor-MAC (S-MAC) protocol, the network faimess is improved.