2. Short answers. Undergrads choose any×Grads answer alik 120 points! Besides we

Question

2. Short answers. Undergrads choose any×Grads answer alik 120 points! Besides web caching, describe a client-server both a client and server for the same transaction a. not P2P), where an end machine acts as Suppose a web server is transferring a web page to the requesting client, and the page consists of just text and no embedded objects. The total size of the file is 5000 bytes, but the transport layer segment has a maximum size of 1200 bytes. How many packets are needed to transmit the file Recall that the header size for TCP is 20 bytes and UDP is 8 bytes b. e. Consider the following order of accessing DNS servers from a host: Local DNS, Root DNS, TLD DNS, and Authoritative DNS. Assume Host 1 contacts its local DNS for the IP address for www.networksrus.com and that only the authoritative DNS server has the mapping. Would the worst case number of requests needed if Host 2 contacts the same local DNS server for this mapping immediately after Host 1 be larger, the same or less with recursive queries as opposed to iterative queries? d. For a client-server application running over UDP, is it necessary to execute the server program before executing the client program? e. Consider the following request message and the two response messages the two responses be faster than the other? GET /fruit/kiwi.gif HTTP/1.0 User-agent: Mozilla/4.0 If-modified-since: Wed, 19 Dec 2001 09:23:24 HTTP/1.0 304 Not Modified Date: Wed, Feb 15 2002 06:20:35 Server: Apache/1.3.0 (Unix) HTTP/1.0 200 OK Date: Mon, Dec 29 2002 06:20:35 Server: Apache/1.3.0 (Unix) Last-Modified: Mon, Dec 19 2002 9:23:24 Content-Type: image/gif

Explanation / Answer

And D) Always required to launch server application or else if client is requesting for any services like dhcp client normally requesting ip from dhcp server using dora process if dhcp server is not working in that scenario it will neither able to identify dhcp nor able to get ip from server

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