"Vision87 Corp." has recently established their web and mail servers and intend to use the user friendly name vision87.com for both services. Assume that the web server load is distributed among 5 servers with a single canonical name web. vision87 akamai.net and IP addresses w_i for i elementof = {1, ...., 5} Moreover, there are 4 mail servers with canonical names m1. Vision87.akamai. net up to m4. M4. Vision87.akamai. net Let the IP addresses for these mail servers be denoted by m_i for i elementof {1, ....., 4}, respectively. The company has set up two authoritative name servers ns1.vision87.com and ns2.vision87.com with IP addresses denoted by n_1 and n_2 respectively. The company has registered its domain name in the DNS registrar, "DNSREG Networks". This registrar has 20 TLD name servers ns1. dnsreg.com up to ns20. dnsreg.com with IP addresses t_i for i elementof {1, ...., 20} respectively. Let root server.net be a dns root server with IP address r. Ignoring TTL field in the resource records, Suppose that a user clicks on a link in the web browser to receive the web page identified with the URL vision.com/index.html. Assume that DNS caches in the client host and local DNS server do not include any matching IP addresses for v ision87.com. Moreover, the local DNS cache does not include any IP address for TLD servers Specify the sequence of DNS query/responses until the local DNS server resolves an IP address for vicion87.com. In addition, assume that the round trip time for each DNS query and corresponding response between the local DNS server and some DNS server in the hierarchy is 5 msec. But the communication delay between the client host and local DNS server is negligible. The round trip time between the client host and vision87.com web server is 10 msec. Object transmission time and all nodal processing delays are also negligible. How much time elapses from the time the user clicks on the link until she receives the web page, if index.html does not contain any references to other objects and HTTP is non-persistent. index.html does not contain any references to other objects and HTTP is persistent. index.html refers to 12 other objects on vision87.com web server, HTTP is non-persistent and web browser is not supporting parallel TCP connections. index.html refers to 12 other objects on vision87.com web server, HTTP is non-persistent, and web browser is supporting up to 4 parallel TCP connections. index.html refers to 12 other objects on vision87 .com web server, HTTP is persistent, and web browser is supporting neither parallel TCP connections nor pipelining. index.html refers to 12 other objects on vision 87.com web server. HTTP is persistent and web browser is supporting up to 4 parallel TCP connections but not pipelining. index.html refers to 12 other objects on vision87.com web server, HTTP is persistent, and web browser is supporting pipelining