Computer Networks

Suppose the client-to-server HTTP GET message is the following: GET /interactive/index.html HTTP/1.1 Host: gaia.cs.umass.edu Accept: text/plain, text/html, text/xml image/png, image/jpeg, audio/basic, audio/mp4, video/wmv, video/mp4, Accept-Language: en-us, en-gb;q=0.1, en;q=0.3, fr, fr-ch, zh, da, cs If-Modified-Since: Sun, 31 Jan 2021 07:33:44 -0800 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1 Fill in the blanks. Do not include extraneous text. The method used is The server name is The object requested is The types of objects accepted are indicated by the header field The least preferred version of English is The client cached a copy of this object (indicate True or False). Match the statements in the left column with the appropriate DNS server types in the right column. The default name server for a host. A. Root server. Authoritative hostname to IP address mapping for hosts B. Local DNS server. within an organization. C. Top-level domain name server. Highest level of DNS hierarchy. D. Authoritative DNS server. Knows how the addresses of authoritative name servers within a domain (e.g., .com, .edu, etc.)