1) Explain the difference between balanced and unbalanced interfaces? (4) 2) Complete the following Table for comparing RS232 and RS485: (14) RS232 RS485 Signaling type Topology (w of drivers and 8 of receivers) Data rate @12m Data rate 1200m Max, distance Max. driver output voltage Receiver input sensitivity 3) List 4 advantages of RS485 over RS232 communications. (4) 4) Why are terminating resistors required when implementing RS-485? (1) 5) Define the term "flow control" as it relates to TIA/EIA-232. Define two methods of flow control that can be implemented in TIA/EIA-232 communications (3) 6) Sketch the minimum DB9 TIA/EIA-232 signal connections for a DTE to DCE communications link using XON/OFF flow control. (2) 7) Sketch the minimum DB9 TIA/EIA-232 signal connections for a DTE to DTE communications link using RTS/CTS flow control. (2) -3