Consider a local network with a 1 Gbps access link to the Internet. Hosts on this network are accessing resources with an average size of 2 MB from a distant server at an average rate of 50 requests per second. a. What is the link utilization of the access link to the internet? b. Suppose these requests were to go through a caching proxy server. What would the link utilization to the internet be if half of all requests were served from the cache of the proxy server? C. Suppose the proxy server could not serve any content from cache (due to the same resources never being needed for example.) Would this still provide any advantages to the end user? Would there be any disadvantages to the end user?