IT1403 Internet and World Wide Web Multiple Choice Question Paper

Transcription

1 UNIVERSITY OF COLOMBO, SRI LANKA UNIVERSITY OF COLOMBO SCHOOL OF COMPUTING DEGREE OF BACHELOR OF INFORMATION TECHNOLOGY (EXTERNAL) Academic Year 2008/ st Year Examination Semester 1 IT1403 Internet and World Wide Web Multiple Choice Question Paper 08 th March, 2009 (TWO HOURS) Important Instructions: The duration of the paper is 2 (Two) hours. The medium of instruction and questions is English. The paper has 50 questions and 10 pages. All questions are of the MCQ (Multiple Choice Questions) type. All questions should be answered. Each question will have 5 (five) choices with one or more correct answers. All questions will carry equal marks. There will be a penalty for incorrect responses to discourage guessing. The mark given for a question will vary from 0 to +1(All the correct choices are marked & no incorrect choices are marked). Answers should be marked on the special answer sheet provided. Note that questions appear on both sides of the paper. If a page is not printed, please inform the supervisor immediately. Mark the correct choices on the question paper first and then transfer them to the given answer sheet which will be machine marked. Please completely read and follow the instructions given on the other side of the answer sheet before you shade your correct choices. 1

2 1. Identify the correct statements related to the Internet. (a) Transactions over the Internet are always secure and reliable. (b) All the documents on the Internet are written in HTML. (c) Everything on the Internet is suitable for children. (d) Wireless networks cannot be connected to the Internet. (e) Internet facilitates file sharing among global community. 2. Consider the following incomplete statement and the list of words given below. Web 2.0 enhances among the internet community. Word list: (i) Creativity (ii) Communication (iii) Secure information sharing (iv) Collaboration Select the appropriate word(s) from the list to complete the above sentence. (a) (i), (ii) only (b) (i), (ii) and (iv) only (c) (i) and (iii) only (d) (ii) and (iii) only (e) All 3. Consider the following statements related to Internet2. (i) Internet2 provides a collaborative network for research community. (ii) Internet2 can be used for high speed data transfer purposes. (iii) Internet2 is a not-for-profit advanced networking consortium Which of the above statements is(are) true? (a) (i) only (b) (i) and (ii) only (c) (ii) and (iii) only (d) (i) and (iii) only (e) All 4. Which system was a precursor to the Internet? (a) CERN (b) WWW (c) ARPANET (d) NMTP (e) AODV 5. Select the correct statements related to protocols. (a) POP is the protocol used for communication between mail servers. (b) POP is the protocol used by an client to communicate with a web server. (c) POP is an ASCII protocol. (d) SMTP is the protocol used between clients to send and receive . (e) Mail servers decode attachments using the POP protocol. 6. Select the correct statement(s) in relation to sending a large binary file as an attachment. (a) One should first compress the attachment before encoding it using MIME. (b) One should first encode the attachment before compressing it. (c) Encoding and compression of an attachment can be done in any order. (d) Uuencoded attachments should be compressed after encoding. (e) A compressed file does not have to be encoded in ASCII. 7. Select the correct option(s) which contains only search engines? (a) Yahoo, Google, Audacity, Excite (b) Altavista, Lycos, Hotbot, Snap (c) Yahoo, Google, AOLAnywhere (d) Chrome, Altavista, Crack Spider (e) Mamma, Mirago, Nerd World, MSN Search 2

3 8. Consider the scenario and the statements given below. A sends an with an attachment including X in the To: line, Y in the Cc: line, and Z and W in the BCc: line. Statements: (i) X can see that Z is also a recipient of the . (ii) Z can see that X is also a recipient of the (iii) Z will not get the attachment but Y will get. (iv) W will not see Z as a recipient. (v) W can see that Y is also a recipient but W will not get the attachment. (vi) W cannot decode the attachment. Which of the above statements is/are true in relation to the above scenario? (a) (ii), (iv) and (vi) only. (b) (ii), (iii) and (v) only (c) (i), (ii) and (iv) only. (d) (ii) and (iv) only (e) All 9. Select the correct statement(s) from the following. (a) There is no meaning in including recipients in the BCc: line when forwarding s. (b) It is possible to change the Subject line of the forwarded s. (c) It is possible to change the content of the forwarded s. (d) Attachments can be forwarded. (e) One can always successfully forward s to any mailing list. 10. Which of the following statements is(are) correct in relation to cookies? (a) It is a mechanism used by web servers to keep track of user requests. (b) Users can configure the browser to accept cookies only from a given list of web sites. (c) Users can remove cookies from their computers. (d) Users cannot block cookies. (e) A cookie is a character string that a web server sends to a web browser. 11. Consider the following statements related to search engines. (i) Search engines search the whole WWW in each search to retrieve the pages relevant to the user. (ii) Some search engines are known as meta search engines. (iii) Most of the search engines employ spiders to build their web page list. (iv) Searching technique and the presentation of results depends on the search engine. Which of the above statements is (are) true? (a) (ii) and (iii) only. (b) (i) and (ii) only. (c) (i) and (iv) only. (d) (ii) and (iv) only. (e) (ii), (iii) and (iv) only. 12. What can be inferred about modern searching mechanisms and search engines? (a) Allow users to submit a query with multiple keywords. (b) Some search engines allow users to combine the key words with boolean operators. (c) Modern search engines use spiders. (d) Some search engines are multilingual. (e) Some search engines can dynamically change their page ranking method to suit the user. 3

4 13. Which of the following sets contains only tools/languages which can generate dynamic WebPages or animations to be used in the web? 14. What is/are true about spiders? 15. CSS (a) Silverlight, Adobe Flash, Adobe Fireworks, Swish Max (b) Dreamweaver, Adobe Photoshop, Macromedia Director, Adobe Indesign (c) VRML, Blender, 3ds Max, Maya (d) HTML, DHTML, XML, XHTML (e) PHP, Java, SGML, Silverlight (a) They crawl though the set of web pages they know and identify new pages. (b) It is a mechanism used by the search engines to build their indexes. (c) They are virus carrying agents. (d) A spider acts as a web client and request pages from web sites. (e) Spider does not have to have prior knowledge of the site which it is going to browse. (a) defines the functionality of the web page. (b) stands for Cascading Style Sheets. (c) cannot be used with XML. (d) provides methods to define the structure and the contents separately. (e) can be used with many web based languages such as ASP, HTML and PHP. 16. Consider the following scenario. X gets an message with a file attached to it from one of his friends Y. Which of the following is(are) appropriate actions for X to take in relation to the above scenario? 17. In password hacking, (a) X need not scan the attachment for viruses if he is expecting a file from Y. (b) X should scan the attachment before opening for viruses irrespective of the file type. (c) X does not need to scan the attachment before opening for viruses as Y is well known to him. (d) X does not need to scan the attachment before opening for viruses as his antivirus software is up-to-date. (e) X does not need to scan the attachment before opening for viruses as software on his computer is configured to automatically open attachments. (a) hacking is difficult if a secure login protocol like SSH is used. (b) a password like MangoTree can be easily hacked by using dictionary programs. (c) a sniffer program can listen to the traffic in a computer network and discover passwords. (d) Misspelt words are better than correctly spelt words as passwords. (e) use of short or predictable passwords is advisable as it is difficult to remember long passwords. 4

5 18. Consider the following scenario. X sends an message to Y. Y forwards the message received from X, after making a small alteration in the content to Z. Z sends the message to a mailing list. What is/are true in relation to the above scenario? (a) Behavior of Y is unethical. (b) Behavior of X is definitely unethical. (c) Behavior of both Y and Z are ethical. (d) Behavior of Z is ethical. (e) Behavior of Y is unethical only because of the behavior of Z. 19. Select the INCORRECT statement(s) related to Web browsers. 20. A web page (a) NCSA Mosaic was the first platform independent web browser. (b) Origin of the Internet Explorer can be traced to the NCSA Mosaic. (c) Firefox is an opensource web browser. (d) Safari is a proprietary Internet web browser developed by Apple Inc. (e) Netscape could not maintain its dominance in the browser market as Microsoft started to package its browser, Internet Explorer, with its operating systems. (a) is a document which resides inside a web server. (b) is a document composed of HTML. (c) is identified by a URL. (d) may contain links to other web pages. (e) is accessed through a web browser. 21. Find the set(s) of words which contains only web servers. (a) Apache, CERN, GoServe (c) Jungle, MacHTTP, NCSA (e) Apache, GlassFish, POJO (b) Apache, MySQL, Linux (d) Axis, IIS, Netsite 22. What is/are the correct statement(s) related to web browsing? (a) Web browsers do not need to understand HTML. (b) Users can view all the linked documents irrespective of the location of documents. (c) Navigating is the act of moving from page to page using the links in the web pages. (d) Act of viewing the information on WWW is called web browsing. (e) All documents linked to a particular document should be in the same server. 23. Select the correct statement(s) related to tabbed browsing. (a) Tabbed browsers open different pages in different windows. (b) Chrome, Mozilla Firefox and IE 7 are examples for tabbed browsers. (c) All web browsers do not provide tabbed browsing facility. (d) In some browser implementations one can disable tabbed browsing. (e) Tabbed browsing reduces the desktop clutter. 5

6 24. Consider the following scenario. One creates a dynamic web page using flash, but the web browser fails in loading the page correctly. What can be the correct reason(s) for the failure in the above scenario? (a) The flash player plug-in is missing. (b) The web browser does not support flash. (c) A firewall is blocking flash files. (d) Wrong URL. (e) The flash player required may be of a higher version than the one installed in the browser. 25. Select the set(s) of tags which only deals with character formatting. (a) <body>, <head>, <html>, <font> (c) <font>, <b>, <i>, <em> (e) <form>,<sup>,<sub>, <h1> (b) <table>, <tt>, <ol>, <li> (d) <small>, <sup>, <sub>, <u> 26. Consider the code snippet given below. <HTML> <BODY> &lt H1 &gt Hello BIT &lt H1 &gt </BODY> < /HTML> Which of the following is/are correct in relation to the above code snippet? (a) Hello BIT is displayed as the output with H1 font. (b) Hello BIT </HTML> ; is displayed as the output with H1 font. (c) </HTML> ; is displayed as the output with default font. (d) <H1> Hello BIT <H1> is displayed as the output. (e) The browser reports an error. 27. Select the correct statement(s) related to web directories. 28. Microsoft FrontPage (a) Web directories are websites which keep links to web sites under categories. (b) All web directories adhere to a universal classification system. (c) Yahoo! is an example for a web directory. (d) Some web directories provide local information. (e) A web directory is not a search engine by functionality. (a) does not hide the HTML code from the user. (b) can be integrated with other Microsoft Office products. (c) has a very different interface from other Microsoft Office products. (d) produces bloated HTML code compared handwritten HTML pages. (e) creates non standard web pages which are properly displayed in Internet Explorer. 29. SCORM is a/an (a) standard web protocol. (b) security standard for the Internet. (c) standard for sharing elearning content. (d) G2C services platform. (e) abbreviation for Sharable Content Object Reference Model. 6

7 30. Questions 30 and 31 are based on the following description. Sequence of actions (with one action missing) in downloading a binary file from a FTP server to a computer by using the command line interface is given below. (i) Invoke the FTP client software. (ii) Establish a connection with the FTP server by providing a valid login and password. (iii)... (iv) Download the files required. (v) Exit from the FTP client software. What can the missing action (iii) be? (a) Indicate the files to download. (b) Open the files. (c) Close opened files. (d) Indicate the data exchange mode. (e) Close connection. 31. Appropriate FTP command for the missing action (iii) is 32. What is the port number of FTP? (a) ftp. (b) bin. (c) bye. (d) get README. (e) open ftp.gnu.org. (a) 21 (b) 23 (c) 25 (d) 26 (e) The first step in downloading a file from a public FTP server is to start (a) FTP server on the local machine. (b) FTP client. (c) FTP server on the local machine and the client. (d) FTP service on the local machine. (e) FTP server daemon on the local machine. 34. Consider the following statements related to VNC. (i.) VNC is not based on the client-server architecture. (ii.) VNC is a software system that allows one to control another computer remotely. (iii.) By having connections to two VNC servers from one computer, one can exchange files between the two VNC servers by simply drag-drop. Which of he above statements is(are) true? (a) (ii) only (b) (iii) only (c) (i) and (iii) only (d) (ii) and (iii) only (e) All 35. The increasing order of interactivity for elearning content is: (a) ASCII text, HTML, Audio stream, Video stream, Flash (b) Video stream, Audio stream, ASCII text, HTML, Flash (c) ASCII text, HTML, Flash, Audio stream, Video stream (d) Flash, Video stream, Audio stream, HTML, ASCII text (e) ASCII text, Video stream, Flash, Audio stream, HTML 7

8 36. Select the correct statement(s) related to maturity of the egovernment initiative within a country. 37. Match column X with Y. (a) At transactional services level, information is provided in static form such as circulars, newsletters, application forms and notices. (b) At interactive services level, some interactivity is provided through or filling of web forms. (c) At informational services level, real transactions between the government and its citizens, suppliers and other state agencies take place. (d) At integrated services level, the government information technology infrastructure is mature and stable. (e) e-readiness rates the potential for countries to exploit the opportunities offered by information and communications technology. X Y A. Face Book i. collaborative authoring B. Skype ii. platforms for personal reflection C. Blog iii. instant messaging D. Wiki iv. automated updates E. RSS v. social networking (a) A -iii, B-v, C-i, D-ii, E-iv (b) A -v, B-iii, C-i, D-ii, E-iv (c) A -v, B-iii, C-i, D-ii, E-iv (d) A -v, B-iii, C-ii, D-i, E-iv (e) A -iv, B-ii, C-i, D-iii, E-v 38. Select the asynchronous communication application(s) from among the following. (a) Chat (b) Discussion groups (c) Skype (d) (e) Video Conferencing 39. Which of the following is(are) INCORRECT in relation to Blogs? (a) A typical blog combines text, images and links to other blogs. (b) Blogs cannot be used for business purposes. (c) It allows bloggers to open their ideas to a wide audience and provides a mechanism for reader to comment on such ideas (d) Free blog publishing tools are available on the web. (e) Blog is like a diary maintained by an individual. 40. Identify the situation(s) which require(s) a high bandwidth Internet connection? (a) Reading (b) Video conference (c) Instant messaging. (d) IPTV session (e) Posting a message to a mailing list. 41. Identify the facilities available in Skype. (a) Instant messaging (b) Video conferencing (c) File transfer (d) Make telephone calls to mobile phones. (e) Make telephone calls to land lines 8

9 42. Match column X with column Y. X Y A. Pod casting i. Real-time communication between two or more people based on typed text. B. IPTV ii. Allow two or more locations to interact via two-way video and audio transmissions simultaneously. C. VoIP iii. Transmission technologies for delivery of voice communications over IP. D. Instant Messaging iv. Method of distributing multimedia files E. Video conference v. Digital television service delivered using Internet Protocol over a network. (a) A -iii, B-v, C-iii, D-ii, E-iv (c) A -iv, B-v, C-iii, D-i, E-ii (e) A -ii, B-iii, C-i, D-v, E-iv (b) A -v, B-iii, C-i, D-ii, E-iv (d) A -v, B-i, C-iii, D-ii, E-iv 43. Instant messaging is preferred over , as it (a) is cheaper. (b) is in real-time. (c) requires no installation. (d) has an option to reply. (e) facilitates communication with more than two. 44. Consider the following activities. (i) Selling goods and services (ii) Collecting payments, ordering materials and supplies (iii) Identifying new and loyal customers (iv) Managing the manufacturing process (v) Quality control and testing (vi) Paying bills Which of the above is an/are ecommerce activity/ies? (a) (i), (ii), (iv) and (v) only. (b) (ii), (iii), (iv) and (v) only. (c) (i), (iii), (iv) and (v) only. (d) (i), (ii), (iii), (iv) and (v) only. (e) All 45. Select the correct statement(s) related to Revenue models for ecommerce. (a) Online catalogues are more flexible than mail order catalogues. (b) Pure advertising is one of the revenue models on the web. (c) Delivering advertisements dynamically depending on whatever is already known about a customer is known as targeted marketing. (d) Most scholarly works use advertising rather than subscription to fund their operations. (e) ebay is a good example for the direct fee model. 46. Select the correct statement(s) related to protocols. (a) SSH allows transfer of files between two computers. (b) SSL maintains the security and integrity of a transmission channel by using encryption, authentication and message authentication codes. (c) S-HTTP is designed to transmit individual messages securely. (d) SET is used to enable secure credit card transactions over the Internet. (e) S/MIME enables privacy and data security for transactions. 9

10 47. Consider the following statements related to Data encryption. (i) Highest level of encryption key length is 32 bits (ii) In secret key cryptography, same key is used to encrypt and decrypt the data. (iii) Secret key cryptography is very practical compared to public key methodology. Which of the above statement(s) is(are) correct? (a) (i) and (iii) only (b) (ii) and (iii) only (c) (i) and (ii) only (d) (ii) only (e) None 48. Consider the following statements related to Data protection and privacy on the web. (i) Using Secure Sockets Layer (SSL) commutation is more secured. (ii) Browser cookies are a threat to privacy of information in cyberspace. (iii) Data provided on the Internet is always accessible only to intended users. Which of the above statements is(are) correct? 49. A computer worm (a) (i) only (b) (ii) and (iii) only (c) (i) and (iii) only (d) (i) and (ii) only (e) All (a) is designed to spread from computer to computer. (b) is less harmful than a virus. (c) spreads by exploiting vulnerabilities in operating systems. (d) needs a host program to run. (e) only attacks windows machines. 50. Which of the following statements is (are) correct? (a) Access to data/information knowing one has no authority to access such information is a crime in SriLanka. (b) Introducing a computer program which will have the effect of malfunctioning of a computer is not a crime (c) Different countries and economies have different laws governing electronic communication. (d) Creative Commons is dedicated to making it easier for people to share and build upon the work of others, consistent with the rules of copyright. (e) Copyright does not protect underlying ideas or facts. *********** 10