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<html><head><title> CS 314: Assignment 1 -- Internet </title></head><body><h1> Homework Number 1 </h1><h3>Date Assigned: January 31, 1995<br>Date Due: February 7, 1995</h3><h3> To submit your answer </h3>You will submit your answers to this assignment via email. See theinstructions below.<h2> Introduction </h2>The Internet offers a wide variety electronic information resources.This assignment touches on three of these resources---the World WideWeb (WWW), the newsgroups, and electronic mail (email)---and on the CS314-related information available therein.<h2> Prerequisites </h2>You will need access to the Internet and to a WWW browser, anewsreader, and an email application in order to complete thisassignment. All four of these services are available in the Upson B7Mac Lab, via <i>Bear Access EZ-LINK</i>, to those with C.I.T. NetIDsand passwords. The instructions for this assignment will be for <i>BearAccess</i>, but you may use a different combination of accessapplications---e.g., <i>NCSA Mosaic</i>, <i>rn</i>, and <i>mail</i>from a Unix account---if you wish.<h3>Bear Access</h3>In order to use <i>Bear Access</i>, you will need a C.I.T. NetID, avalid C.I.T. password, and two blank floppies (one for mail and one fornews). <i>Bear Access</i> can be found on the B7 Macs under the Applemenu.<p>Once launched, <i>Bear Access</i> presents you with a menu system, fromwhich you may access the WWW browser, <i>Netscape</i>, the newsreader,<i>NewsWatcher</i>, and the email application, <i>Eudora</i>. Thishandout contains only skeletal instructions for the use of the theseapplications; we recommend that you read the C.I.T. documentation onthese applications if you are not familiar with them.<h3>WWW</h3>The WWW is an Internet hypertext resource. WWW documents may containtext, GUI forms, graphics, sound, animation, etc., as well as hypertextlinks to other documents on the Web. The ``web'' in ``World Wide Web''refers to the structure implied by these hypertext links. You can jumpfrom document to document, across machine, organizational, andgeographic boundaries, by following links. If you think of thedocuments as nodes and the links as edges in a graph, you'll get theidea.<h3>CS 314-related material on the Web</h3>A fair amount of information related to CS 314 is available via the WWWfrom the CS 314 home page. Lecture notes, homework assignments, andcourse information are currently available. Videos of the lectures maybe made available on the WWW in the future.<h2>Using Netscape</h2>Click on the <i>World Wide Web</i> the <i>Bear Access</i> top-levelmenu to launch <i>Netscape</i>. Hypertext links in documents may bedisplayed as blue, underlined text or as blue-outlined icons. Clickingon a hypertext link will cause the document referenced by the link tobe retrieved. The title of the current WWW document is displayed inthe title bar of the <i>Netscape</i> window (this is the ``documenttitle from the title bar'' referred to below). The <i>Location</i>field gives the current URL (more on this later). The <i>Home</i>button may be used at any time to return you to the default document.(In the B7 Mac Lab, the default document is the CUInfo home page.) The<i>Open</i> button may be used to jump to an arbitrary URL. Werecommend that you take a look at the <i>Netscape</i> handbook (selectthe <i>Help -- Handbook</i> menu item) for further instructions on howto use <i>Netscape</i> and for further information on the WWW.<h3>Accessing the CS 314 home page</h3>After <i>Netscape</i> has been launched, you should see the CUInfo homepage. The procedure for reaching the CS 314 home page from the CUInfohome page is as follows:<pre><u>Click on... From document...</u>Other Cornell Web Servers CUInfo Home PageCornell University. Dept. of Computer Science Other Cornell WWW ServersCourse Home Pages Cornell Department of Computer ScienceCS 314: Introduction to Digital... Cornell Course Home Pages Spring 1995</pre>You should now be viewing the CS 314 home page. Spend some timenavigating the documents linked to this page; try to get a picture ofhow the various documents are linked and what the overall structureis. When you've become somewhat familiar with the CS 314 page, andwith Web navigation in general, answer the following questions.<p><b>1</b>. Start from the CS 314 home page. Click on <i>Table ofContents</i>, then click on <i>Generations of Computers</i>.Click on <i>Next</i> (either one). What document are you nowviewing? (Give the document title from the title bar.)<p><b>2</b>. Now, navigate back to the CS 314 home page. How did youaccomplish this? (Give a sequence of clicks, button presses, menuchoices, etc. There are several possible answers.)<p><b>3</b>. Finally, you should get used to searching through the Web forinformation whose location you do not know {\sl a priori}. Answer thefollowing question: in which CS 314 WWW document is the acronym ``RTL''first defined? (Give the document title from the title bar.)<h3>URLs</h3>A Uniform Resource Locator (URL) is basically an address of a WWWdocument. For the URLs which you'll be using in this assignment,the address is absolute (as opposed to relative);it can be used from anywhere on the Internet.``Opening'' a URL simply means retrieving the WWW document atthe address referred to by the URL; you might think of thisas ``jumping'' to the document.<p><b>4</b>. Open the URL <i>http://www.hyperion.com/</i>. What isthe title of this document?<p><b>5</b>. By now, you should be getting used to tracking downinformation on the Web. Try to answer the following question, startingfrom the Hyperion Web page: who was the director of the {\sl Babylon5} epsiode, ``A Race Through Dark Places''?<h2>Newsgroups</h2>The newsgroups provide a sort of Internet bulletin board wheremessages may be posted and read by a wide variety of people withsimilar interests. CS 314 has a dedicated newsgroup,<i>cornell.class.cs314</i>, which may be used for announcements,feedback, questions of general interest, etc.<p>To access the CS 314 newsgroup from the B7 Macs, click on the<i>Network News ("Usenet")</i> menu item on the<i>Bear Access</i> top-level menu, then click on the<i>NewsWatcher Help</i> menu item and read the instructions.Configure and run <i>NewsWatcher</i> as specified in the instructions.Once <i>NewsWatcher</i> has been configured and is running,go to the <i>Full Group List</i> window.Scroll down through the list of newsgroups until you see<i>cornell.class.cs314</i>. Double-click on<i>cornell.class.cs314</i>. A <i>cornell.class.cs314</i>window should appear, containing a list of messages (actually,a hierarchical list of authors and subjects of messages, organized bythreads).Double-clickingon a message will bring up the full message, which consists of aheader (the <i>From:</i>, <i>To:</i>, etc. lines abovethe double-line) and a body (the part below the double-line).<p><b>6</b>. Find the message with the subject <i>cs314 hwk1article</i> and date <i>Sun, 29 Jan 1995 20:47:24 GMT</i>.What is the body of this message? (It should be four lines of text.)<p>See the C.I.T. documentation for further information on the newsgroupsand on <i>NewsWatcher</i>.<h2>Email</h2>The <i>Bear Access</i> email application, <i>Eudora</i>, maybe accessed via the <i>Mail</i> menu item on the top-level<i>Bear Access</i> menu. Click on the <i>Mail Help</i> itemand read the instructions there. Configure and run <i>Eudora</i> as specifiedin the instructions. Once <i>Eudora</i> has been configured and isrunning, you may send a message by selecting<i>Message -- New Message</i> from the menu at the top of the screen.See the C.I.T. documentation for further information on electronic mailand on <i>Eudora</i>.<h2>Submitting Answers</h2>Send an email message to <i>cs314@cs.cornell.edu</i> with thesubject <i>cs314 assignment 1 answers</i>. Include the followinginformation in your message:<pre> Name (Last, First): Cornell ID: Address: Phone: Grading (letter, S/U, or audit): College, major, and year in school: Proficiency (on a scale of 1-5, 1=don't know, 5=guru) in C: FORTRAN: BASIC: Pascal: Scheme: Other languages (please list): Computer science courses taken so far: Answers to questions 1-6:</pre></body></html>⌨️ 快捷键说明
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