Assume that it is on a network a DNS server (DNS) a Host (H) with a browser client and a Web server called www.olles.se (Links to an external site.) (S) From the host's browser, a request is sent to www.olles.se (Links to an external page.) Which packages are sent and in which order (1) (2) etc. indicates the order (nothing is cached) Group of answer options (1) H to DNS, (2) DNS to H, (3) H to S, (4) S to H (1) H to DNS, (2) DNS to S, (3) S to H (1) H to DNS, (2) DNS to S, (3) S to DNS, (4) DNS to H (1) H to DNS, (2) DNS to H, (3) H to S, (4) S to DNS (5) DNS to H

Assume that it is on a network a DNS server (DNS) a Host (H) with a browser client and a Web server called www.olles.se (Links to an external site.) (S) From the host's browser, a request is sent to www.olles.se (Links to an external page.) Which packages are sent and in which order (1) (2) etc. indicates the order (nothing is cached) Group of answer options (1) H to DNS, (2) DNS to H, (3) H to S, (4) S to H (1) H to DNS, (2) DNS to S, (3) S to H (1) H to DNS, (2) DNS to S, (3) S to DNS, (4) DNS to H (1) H to DNS, (2) DNS to H, (3) H to S, (4) S to DNS (5) DNS to H

Fundamentals of Information Systems

9th Edition

ISBN:9781337097536

Author:Ralph Stair, George Reynolds

Publisher:Ralph Stair, George Reynolds

Chapter4: Networks And Cloud Computing

Section: Chapter Questions

Problem 8SAT

See similar textbooks

Similar questions

Assume you use your Web browser to access a Web page by clicking on a link. Because the IP address for the related URL is not cached on your local host, a DNS search is required to acquire it. Assume that n DNS servers are contacted before your host obtains the IP address from DNS; each subsequent visit incurs an RTT of RTT1,..., RTTn. Assume that the Web page connected with the link has only one item, which is a little bit of HTML text. Let RTT0 represent the RTT between the local host and the server that has the item. Assuming that the item has a zero transmission time, how much time elapses between when the client clicks on the link and when the client receives the object?
Computer Science Design in PYTHON a basic forward proxy server that can handle HTTP traffic. The following features must be present: 1. Logging entails recording all outgoing and incoming requests. 2. Adding domains to the blacklist for further security. For example, you may restrict a certain IP address or website. 3..Managing several transactions (i.e. many requests and responses) at the same time to increase performance. 4. Adding domains to the blacklist for further security. For example, you may restrict a certain IP address or website. I'll offer an upvote to anyone who successfully answers this question.
Sort DNS records by type. Give a brief description of each with examples and use rationale. Is it possible for a web server and a mail server to share a hostname alias?
shell script needed for the following I have two files in the same directory: "host_list" and "known_hosts". host_list contains a list of servers. known_hosts contains the keys for each of the servers in host_list. I want the script to take from host_list a server name and check (grep) all keys containing that server name in known_hosts. If the resulting keys contain 'sample' in the url, keep those keys. Otherwise delete the rest. Here's an example: In host_list, we have two servers: be3abcd3 and be3efgh4.We check for mentions of be3abcd3 in known_hosts. That results in:be3abcd3.300.200.100.50andbe3abcd3.sample.com The script will delete be3abcd3.300.200.100.50 and keep be3abcd3.sample.com, as that contains 'sample' in the url.
1- A user clicks on the link www.msn.com/index.html. Accordingly, the browser asks the cache server for this page, which is available at the cache from Wed 01 Jun 2017 22:54:43 GMT and it is modified yesterday. Write the HTTP 1.1 conditional GET request/response messages sent/received by the cache server. The answer must include the TCP connection (telnet) command and the necessary headers (if exist).
The URL Connection class can be used to read and write data: Select one: a.To the specified resource referred by the HttpResponse and the URL b.To the specified resource referred by the URL c.To the specified resource referred by the HttpServer and the URL d.To the specified resource referred by the ServerSocket and the URL
You have the option of categorizing DNS records by category. Every single one of them has to be segmented into manageable pieces and accompanied with examples and arguments. Is it possible for an organization's email server and web server to have the same hostname?
Download delays for 100 objects (HTTP 1.1 with local web caching). Consider an HTTP 1.1 client and server. The RTT delay between the client and server is 2 seconds. Suppose the time a server needs to transmit an object into its outgoing link is 3 seconds. There is also a local web cache, as shown in the figure below, with negligible (zero) propagation delay and object transmission time. The client makes 100 requests one after the other, waiting for a reply before sending the next request. All requests first go to the cache (which also has a 2.0 sec. RTT delay to the server but zero RTT to the client). How much time elapses between the client transmitting the first request, and the receipt of the last requested object, assuming no use of the IF-MODIFIED-SINCE header line anywhere, and assuming that 50% of the objects requested are "hits" (found) in the local cache? Your answer should be among the following list( 702 secs, 552 secs, 352 secs, 350 secs, 150 secs) . Show your…
PLEASE LOOK AT MY QUESTION CAREFULLY ! PLEASE LOOK AT MY QUESTION CAREFULLY ! PLEASE LOOK AT MY QUESTION CAREFULLY ! the nodejs server code is like this const http = require("http");const url = require('url'); var hostName = '127.0.0.1';var port = 3000; var server = http.createServer(function(req,res){res.setHeader('Content-Type','text/plain');const parsed = url.parse(req.url);const pathname = parsed['pathname'] const queryObject = url.parse(req.url,true).query;let queryValue = queryObject['name'] if(queryValue==null){queryValue=""} if (pathname=="/"){res.end("SUCCESS!")}else if (pathname=="/echo"){res.end("SUCCESS! echo")} else if (pathname=="/foxtrot/:name"){queryValue = queryObject['name'].toString()res.end("SUCCESS! Received "+queryValue+" via foxtrot")}else{res.end("FAILED! Fix your URL.")} }) server.listen(port,hostName,()=>{console.log(`Server running at http://${hostName}:${port}/`);}); ======================== when i enter http://localhost:3000/foxrot/kilo i hope it…
Would you agree with the following statement about a peer-to-peer file-sharing application: "There is no concept of client and server sides of a communication session"? What is the reason for this or why is it not?
Computer Science C programming Develop a proxy HTTP server that can accept HTTP requests from clients and convert them to HTTPS request to the web server. The HTTP request can be filtered based on an access control list. The requests can be generated by any web client, such as the curl command or a web browser. the proxy converts plain text HTTP requests from a client to HTTPS requests and then returns the responses to the client. Main objective is to create a proxy HTTP server that converts cleartext HTTP requests from clients to HTTPS requests to servers and vice versa for the responsesresponses.
Type A resource records contain a. Mail Records b. IPv4 mappings c. Host Aliases d. IPv6 mappings