origin servers public Internet 15 Mbps access link institutional network Gbps LAN local web cache A set of web-browsers on the institutional network at USC generates an average of 10 requests/second for web-objects of size 1.5 Mb. The access link to the public Internet is 15 Mbps. USC's LAN operates at 1 Gbps. Assume LAN delay and internet delay are negligible. Suppose you installed a web-cache and found that it resulted in access link utilization being reduced to 7.5 Mbps. From your findings, what the cache hit-rate that resulted in this reduction in access link utilization? Show your work. origin servers public Internet 15 Mbps access link institutional network Gbps LAN local web cache A set of web-browsers on the institutional network at USC generates an average of 10 requests/second for web-objects of size 1.5 Mb. The access link to the public Internet is 15 Mbps. USC's LAN operates at 1 Gbps. Assume LAN delay and internet delay are negligible. Suppose you installed a web-cache and found that it resulted in access link utilization being reduced to 7.5 Mbps. From your findings, what the cache hit-rate that resulted in this reduction in access link utilization? Show your work