Q2) What version of HTTP is the client running? Suppose the client-to-server HTTP GET message is the following: HTTP/1.1 GET/kurose_ross_sandbox/interactive/quantum7.html Host: gaia.cs.umass.edu Accept: text/plain, text/html, image/gif, image/jpeg, audio/mp4, audio/vnf.wave, video/mp4, video/mpeg, Accept-Language: en-us, en-gb;q=0.6, en;q=0.7, fr, fr-ch, da, fi, ar, cs If-Modified-Since: Thu, 14 Sep 2023 12:07:49 -0700 User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0) http message host, running a web browser O HTTP/2 O HTTP/1 O HTTP/1.1 O HTTP/3 Internet gala.cs.umass.edu Web server

Q2) What version of HTTP is the client running? Suppose the client-to-server HTTP GET message is the following: HTTP/1.1 GET/kurose_ross_sandbox/interactive/quantum7.html Host: gaia.cs.umass.edu Accept: text/plain, text/html, image/gif, image/jpeg, audio/mp4, audio/vnf.wave, video/mp4, video/mpeg, Accept-Language: en-us, en-gb;q=0.6, en;q=0.7, fr, fr-ch, da, fi, ar, cs If-Modified-Since: Thu, 14 Sep 2023 12:07:49 -0700 User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0) http message host, running a web browser O HTTP/2 O HTTP/1 O HTTP/1.1 O HTTP/3 Internet gala.cs.umass.edu Web server

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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I'm trying to run this python script in this html code and it wouldn't work for me. Please help me connect the HTML and Python scrip to together to display packets from Wireshark. It would start capturing by hitting a button on the browser. -------------------------------------------------------------------------------------------- import pyshark import time while True: def print_packet_summary(pkt): print(" ", str(pkt)[:120]) capture = pyshark.LiveCapture(interface='Wi-Fi', only_summaries=True, bpf_filter='udp port 53') capture.sniff(packet_count=10) for packet in capture: localtime = time.asctime(time.localtime(time.time())) print_packet_summary(packet) print(localtime) -------------------------------------------------------------------------------- when you click here on the HTML button I want it to run the python script above. <button type="button">Click Me!</button>
What is DASH? In DASH (Dynamic, Adaptive Streaming over HTTP), a server divides a video file into chunks that ... (pick best completion from below) Group of answer choices A. ... are stored, each encoded at multiple rates (video quality). The client receives multiple video chunks (encoded at different rates) and plays out the chunks that best fit the screen size. B. ... are download smallest-chunk-first in order to maximize the number of chunks received. C. ... are stored, each encoded at multiple rates (video quality). The client plays the video chunk-by-chunk, with each chunk requested at encoding rate that fits the available bandwidth at the time. D. ... allow premium users to avoid watching chunks that contain commercials. E ... are downloaded just before their playout time. Chunking is used primarily because a viewer may jump around (e.g., fast forward) in a video.
1.2 Suppose Alice, with a Web-based email account (such as Hotmail or Gmail), sends a message to Bob, who accesses his mail from his mail server using POP3. Discuss how the message gets from Alice's host to Bob's host. Be sure to list the senies of application-layer protocols that are used to move the message between the two hosts. For the toolbar, press ALT+F10 (PC) o ALT+FN+F10 (Mac). IUS Paragraph Arial 10pt x X2 員 Ť (1} +] O B.
Q3) The client will accept jpeg images? [True/False] Suppose the client-to-server HTTP GET message is the following: GET/kurose_ross_sandbox/interactive/quantum 7.html HTTP/1.1 Host: gaia.cs.umass.edu Accept: text/plain, text/html, image/gif, image/jpeg, audio/mp4, audio/vnf.wave, video/mp4, video/mpeg, Accept-Language: en-us, en-gb;q=0.6, en;q=0.7, fr, fr-ch, da, fi, ar, cs If-Modified-Since: Thu, 14 Sep 2023 12:07:49 -0700 User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0) host, running a web browser True http message O False Internet gala.cs.umass.edu Web server
24) What is the last updated time if client has a cached copy of the file? Suppose the client-to-server HTTP GET message is the following: HTTP/1.1 GET /kurose_ross_sandbox/interactive/quantum7.html Host: gaia.cs.umass.edu Accept: text/plain, text/html, image/gif, image/jpeg, audio/mp4, audio/vnf.wave, video/mp4, video/mpeg, Accept-Language: en-us, en-gb;q=0.6, en;q=0.7, fr, fr-ch, da, fi, ar, cs f-Modified-Since: Thu, 14 Sep 2023 12:07:49 -0700 User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0) http message host, running a web browser Internet gaia.cs.umass.edu Web server the Client doesn't have a cached copy of file/ Non of the answers O The last midnight at 12:00 AM O Thu, 14 Sep 2023 12:07:49 -0700
Explain the properties of a sample space and different types of sample spaces, also explain the events related to a random experiment. Specify the sample space of each of following experiment. A block of information is transmitted repeatedly over a noisy channel until an error-free block arrives at the receiver. Count the number of transmissions required. Pick a number at random between zero and one. Measure the time between page requests in a Web server.
You are assign to setup a real LAN network with 2 real servers PC with Centos. The nework IP address range selected from the network is 172.16.16.0/24.The two(2) servers to be setup is a FTP server (172.16.16.23) and a Web Server and DHCP Server setup in a VirtualBox environment in the 2nd server. WebServer(172.16.16.80) and DHCPServer(172.16.16.2).Show the instruction step by step to Setup the IP address of all the servers using the nmcli command.
Match left-column statements to right-column architectures. Always-on server. Processes may provide or receive service. Any communication has a client and server. It's HTTP. User-controlled hosts may be up or down. Self-scalable. A. Peer-to-peer. B. Not client-server or peer-to-peer. C. Client-server/peer-to-peer. D. Client-server. E. TCP/IP.
2.2-6 A detailed Look at an HTTP GET (2). Again, suppose a client is sending an HTTP GET request message to a web server, gaia.cs.umass.edu. The client-to-server HTTP GET message is the following (same as in previous problem): GET /kurose_ross_sandbox/interactive/quotation2.htm HTTP/1.1Host: gaia.cs.umass.eduAccept: text/plain, text/html, text/xml, image/jpeg, image/gif, audio/mpeg, audio/mp4, video/wmv, video/mp4,Accept-Language: en-us, en-gb;q=0.1, en;q=0.7, fr, fr-ch, da, de, fiIf-Modified-Since: Wed, 09 Sep 2020 16:06:01 -0700User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11What is the language in which the client would least prefer to get a response? [You may have to search around the Web a bit to answer this.] [Note: you can find additional questions similar to this here.]
Suppose a client sends an HTTP request message with the If-modified-since header. Sup- pose the object in a server has not changed since the last time a client retrieved the object. Then the server will send a response message with the status code: A. 200 OK B. 404 Not Found C. 304 Not Modified D. none of the above
6.7-2. Caching everywhere! We've seen caching used in many different places in our study of networking. In this question, you should match the description of a particular form of caching with the protocol or network service where this caching occurs. Each element of the pull-down menu should match with at most one of the given descriptions. Caching copies of web pages for an i client. individual Caching copies of web pages for a set of clients. Caching translation pairs between a domain name and an IP address Caching translation pairs between an IP address and a MAC address. Caching translation pairs between a MAC address and a layer-2 switch port. [Choose ] [Choose ] Local DNS caching Web browser caching Learning switch caching Caching in the ARP cache Web caching/proxy [Choose ] [Choose ] [Choose ]
When you use your phone, if DNS looking up happens once every 10 minutes, and each time the HTTP file references 8 objects, how much time elapses with Non-persistent HTTP, and no parallel TCP connections