$1.$ Provide a list of WAN topologies and their description. $2.$ What is PSTN$?$ What is its maximum throughput? What are its advantages and disadvantages? $3.$ What is Frame Relay? What is its maximum throughput? What are its advantages and disadvantages? $4.$ What is T$1?$ What is its maximum throughput? What are its advantages and disadvantages? $5.$ What is T$3?$ What is its maximum throughput? What are its advantages and disadvantages? $6.$ What is DSL$?$ What is its maximum throughput? What are its advantages and disadvantages? $7.$ What is Broadband Cable? What is its maximum throughput? What are its advantages and disadvantages? $8.$ What is an ATM? What is its maximum throughput? What are its advantages and disadvantages? $9.$ What is SONET? What is its maximum throughput? What are its advantages and disadvantages?$10.$ What is MPLS$?$ What is its maximum throughput? What are its advantages and disadvantages? $11.$ What is Metro Ethernet? What is its maximum throughput? What are its advantages and disadvantages? $12.$ What is WiMAX? What is its maximum throughput? What are its advantages and disadvantages? $13.$ What is Cellular? What is its maximum throughput? What are its advantages and disadvantages? $14.$ What is Satellite? What is its maximum throughput? What arp its advantages and disadvantages?