**PLEASE ANSWER BOTH PARTS**

8) As is illustrated below, an organization has three different EDI (Electronic Data Interchange) terminals (TC1, TC2, and TC3 connected to three EDI servers (S1, S2, and S3) over three point-to-point dedicated circuits. TC1, TC2, and TC3 are in three different cities. S1, S2, and S3 are in three other cities. TC1 connects to S1, over a 2500-mile circuit. TC2 connects to S2 over a second 2500-mile circuit. TC3 connects to S3 over a third 2500-mile circuit. The monthly fee for each circuit is $1 per mile. a. What is the organization's total monthly expense for the three circuits? As illustrated below, TC1 is located 25 miles from TC2; TC3 is also located 25 miles from TC2. S1 is located 25 miles from S2; S3 is also located 25 miles from S2. The organization is planning to place a multiplexer at each end of the circuit between TC2 and S2 and to connect TC1 and TC3 to the multiplexer at TC2 and to connect S1 and S3 to the multiplexer at S2. Note: multiplexing is discussed in section 3.2. b. What will be the organization's total monthly circuit charges when the multiplexers are added