CmpSci 120 Exam 2 Examples

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1 CmpSci 120 Exam 2 Examples General format of Exam 2: 10 2 pts each (20 total) 10 multiple 2 pts each (20 total) 4 short answer 5 pts each (20 total) 2 medium-long 20 pts each (40 total) Please note: Some of these questions may be on the examination in the form given below or in alternative formats (e.g. negation) I will include questions that are not on this list, so carefully look over all of the lecture notes See the W3C, XHTML, and Javacript sample multiple choice questions You may use the JavaScript by Example text and a handout on XHTML and CSS tags that I will provide for the exam but no other open book material. You may not use calculators nor other devices. For the exam, make sure that you read each question carefully! True/False Questions: Circle One 1. Web browsers download files from Web servers. T or F T 2. Scaling an image down reduces its reduces bandwidth requirements. T or F T 3. Web browsers normally ignore carriage returns in HTML files. T or F T 4. People are the key component of Web 2.0. T or F T 5. Facebook and similar social networks can guarantee complete privacy if you take proper precautions. T or F F 6. Search services send "spiders" or "robots"("bots") to crawl through the entire Internet. T or F F 7. All search engines are essentially the same. T or F F 8. CSS stands for Cascading Style System. T or F F 9. Search services send "spiders" or "robots"("bots") to crawl through the entire Internet. T or F F 10. If you take proper precautions, you can assure your complete privacy on MySpace, Facebook and similar social. F 11. Web services are software applications (programs) that use HTML to exchange data (information) with other applications on other computers by using Internet protocols. T or F F they use XML not HTML 12. XHTML is a Web standard that is replacing XML and HTML T or F F not replacing XML 13. A virus is program or code that replicates by infects another program, boot sector, partition sector, or document that supports macros, by inserting itself or attaching itself to that medium. T or F T 14. Search engines are the best means devised yet for searching the web. T or F T 15. All Search Engines are the same. T or F F 1

2 16. The "invisible web" is what you cannot find using search engines or subject directories. T or F T 17. Some companies monitor Web pages and online forums to protect themselves and their products. T or F T 18. Search engines have stop words that are never used in ranking pages. T or F F stop words are typically ignored, but known ones, e.g., The Who, are includ 19. An external JavaScript must contain the <script> tag T or F F Multiple Choice Questions. Circle the letter of the best answer. 1. In selecting passwords, it is a good idea to: a. Pick an unusual word from a dictionary b. Use a name, event, pet s-name or location from your family c. Use a mixture of numbers, capital and lowercase letters, and other keyboard symbols d. Pick a non-english word 2. When blogging a. You should feel free to discuss private matters since only your friends will read your blog b. Read and observe your service provider s Terms of Service c. You may comment freely on all matters that concern you d. You can tell people of forthcoming parties where beer will be served without IDs being checked 3. When you create an.html file, a. the BODY element goes inside the HEAD element. b. the HEAD element goes inside the BODY element. c. the TITLE element goes inside the BODY element. d. the TITLE element goes inside the HEAD element. 4. Tables are most often used on Web pages a. to create a small scrollable window inside a Web page. b. to receive input from users. c. for controlling the overall layout of a Web page. d. for displaying lots of numerical data. 5. XHTML a. is being developed to keep W3C staff busy b. is a major departure from HTML c. was designed to describe data while HTML was designed to display data. d. is more restrictive than than HTML 6. Where in an HTML document is the correct place for embedded style definitions? a. In the <body> section b. At the top of the document c. In the <head> section d. At the end of the document 2

3 7. Which is the correct CSS syntax? a. body;color:black b. body:color=black c. body:color=black(body d. body color: black 8. In selecting passwords, it is a poor idea to: a. Pick an unusual word from a dictionary, particularly a foreign word b. Use a pass phrase that you can easily remember, but which is not a common quote c. Use a mixture of numbers, capital and lowercase letters, and other keyboard symbols d. Replace alphanumeric characters (a, b, c,, 1, 2, ) with special characters and/or change the case of some characters as illustrated by pr0ffess0r@dr10n 9. How do you insert a in a CSS file? a. // this is a comment b. /* this is a comment */ c. // this is a comment // d. ' this is a comment displayed in the browser--> 10. What is the correct CSS syntax for making all the <p> elements A CSS comment begins with "/*", and ends with "*/", like this: /*This is a comment*/ An HTML comment: <!--This is a comment. Comments are not bold? a. p text-size:bold b. <p style="font-size:bold"> c. p font-weight:bold d. <p style="text-size:bold"> 11. How do you display hyperlinks without an underline? a. a underline:none b. a decoration:no underline c. a text-decoration:none d. a text-decoration:no underline 12. Search Engines a. Compile their databases by employing: "spiders" or "robots" ("bots") to crawl Single line JavaScript Comments start with // like this: // Write a heading JavaScript Multi-Line Comments start with /* and end with */ like this: /* The code below will write one heading and two paragraphs */ through web space from link to link, identifying and perusing pages b. Match your keywords and phrases with those in the texts of documents linked to webpages cannot always search linked docs ( invisible web ) c. Search the entire web as it exists at time of the query at time indexed d. All of the above 13. Subject directories a. Often provide more results than search engines. b. Always compile databases of their own c. Are organized hierarchically into subject categories and subcategories d. Always remove dead links 14. Where in an HTML document is the correct place for embedded style definitions? a. In the <body> section b. At the top of the document c. In the <head> section 3

4 d. At the end of the document 15. How do you make an ordered list that lists its items with upper-case Roman numerals? a. list-type: upper-roman b. type: upper-roman c. list-style-type: upper-roman d. type: roman 16. Search engines rank pages by: a. Looking for the location and frequency of keywords and phrases in the web page b. Using HTML META tags c. Scanning the title, headers and text near the top of the document d. Counting the number of links that are pointing to the pages e. All of the above f. None of the above 17. What XHTML code is "well-formed"? a. <p>a <b><i>short</b></i> paragraph</p> b. <p>a <b><i>short</i></b> paragraph</p> c. <p>a <b><i>short</i></b> paragraph 18. How do you add a background color for all <h1> elements? a. all.h1 background-color:#ffffff b. h1.all background-color:#ffffff c. h1 background-color:#ffffff d. h1 bgcolor = #FFFFFF 19. In selecting passwords, it is a good idea to: a. Pick an unusual word from a dictionary, particularly a foreign word b. Use a common quote that you can easily remember c. Use a mixture of numbers, capital and lowercase letters, and other keyboard symbols d. Use the name of your hometown 20. Which if the following is not a sans-serif font? a. Verdana b. Times New Roman c. Arial d. Geneva 21. Inside which HTML element do we put the JavaScript? a) <js> b) <javascript> c) <scripting> d) <script> 4

5 20. What is the correct JavaScript syntax to write "Hello World"? a) document.write("hello World") b) response.write("hello World") c) "Hello World" d) ("Hello World") 21. Where is the correct place to insert a JavaScript? a) Both the <head> section and the <body> section are correct b) The <body> section c) The <head> section 22. What is the correct syntax for referring to an external script called "xxx.js"? a) <script name="xxx.js"> b) <script href="xxx.js"> c) <script src="xxx.js"> 23. How do you write "Hello World" in an alert box? a) alertbox="hello World" b) alert("hello World") c) alertbox("hello World") d) msgbox("hello World") 24. How do you create a function? a) function:myfunction() b) function=myfunction() c) function myfunction() 25. How do you call a function named "myfunction"? a) myfunction() b) call function myfunction c) call myfunction() 26. How do you write a conditional statement for executing some statements only if "i" is equal to 5? a) if i==5 then b) if (i==5) c) if i=5 then d) if i=5 27. How do you write a conditional statement for executing some statements only if "i" is NOT equal to 5? a) if (i <> 5) b) if <>5 c) if =! 5 then d) if (i!= 5) 28. How many different kind of loops are there in JavaScript? a) Four. The "for" loop, the "while" loop, the "do...while" loop, and the "loop...until" loop b) Two. The "for" loop and the "while" loop c) One. The "for" loop 5

6 29. How does a "while" loop start? a) while i=1 to 10 b) while (i<=10;i++) c) while (i<=10) 30. How does a "for" loop start? a) for i = 1 to 5 b) for (i = 0; i <= 5) c) for (i = 0; i <= 5; i++) d) for (i <= 5; i++) 31. How can you add a single line comment in a JavaScript? a) 'This is a comment b)  c) //This is a comment 32. What is the correct JavaScript syntax to insert a multi-line comment a) //This comment has i) more than one line// b)  c) /*This comment has more than one line*/ 33. What is the correct way to write a JavaScript array? a) var txt = new Array(1:"tim",2:"kim",3:"jim") b) var txt = new Array("tim","kim","jim") c) var txt = new Array="tim","kim","jim" d) var txt = new Array:1=("tim")2=("kim")3=("jim") Please look at the CSS, XHTML and JavaScript quizzes at A CSS comment begins with "/*", and ends with "*/", like this: /*This is a comment*/ An HTML comment:  Single line JavaScript Comments start with // like this: // Write a heading JavaScript Multi-Line Comments start with /* and end with */ like this: /* The code below will write one heading and two paragraphs */ 6

7 Short Answer Questions Answer each question in 2-4 sentences. 1. What is the difference between individual and metasearch search services? Individual search engines index the searched space and store links in a database; metasearch engines use several independent search engines, but do not do indexing themselves they may organize the results of the search engines or just list the links provided 2. Contrast search engines vs. subject directories. Briefly describe when your search might require one or the other or both. Search engines accept queries and use them to search their indexes and databases; subject directories organize indexes by subject. Search engines are useful when you have a good and specific idea of what information you are seeking; subject directories are useful if you are doing a less precise search or don t know how to form a query. They can be use together by first using a subject directory to refine your search and the queries to locate results, or vice versa you may find the a search engine returns links that suggest categories. 3. Explain how IMAP mail, POP mail and Web-based mail (e.g., Googl ) differ. IMAP servers retain originals of messages on the server and a mail reader is used to read (and perhaps retain) copies of those messages on a client POP servers allow messages to be downloaded (perhaps retaining copies) to a client mail reader to be stored and read Web-based mail systems both retain originals of messages on the server and provide a server-based mail reader (nothing downloaded to client) 4. What does the well-formed requirement of XHTML mean? (Hint: see multiple choice questions) XHTML elements must be properly nested XHTML elements must always be closed XHTML elements must be in lowercase XHTML documents must have one root element At least 3 of these 5. Explain the pros and cons of subject directories. (Hint: see multiple choice questions) Pros: Hierarchically organized into browsable subject categories and subcategories May also provide fewer results out of context than search engines. Cons: Most directories do not compile databases of their own Dead links are a real problem for subject directories, 7

8 at least one of each 6. Explain the pros and cons of using external frames as a webpage layout method. Pros: A frameset composes the browser window of individual frame elements, each of which is its own complete html document. Can develop frames independently Cons: Some browsers that are frames-incapable Have to include no-frames content Often misused Functionality can be achieved with more standard HTML at least one of each 7. Assume you have created an array of pets: var mypets = new Array(); mypets[0] = "dog"; mypets[1] = "cat"; mypets[2] = "goldfish"; </script> a) Add a for loop to print out the array (add code below): [5 pts.] var mypets = new Array(); mypets[0] = "dog"; mypets[1] = "cat"; mypets[2] = "goldfish"; for (i=0;i<mypets.length;i++) document.write(mypets[i] + "<br />"); </script> 8

double-red Border is green, medium and single-lined (solid) p.

9 Medium-Long answer questions. For Exam 2, these will include CSS and/or html or layout questions. 1. CSS Question For the page rendered below Add the necessary styles in this code: <html> <head> <style type="text/css"> p.double-red Border is green, medium and single-lined (solid) p.single-green </style> </head> Either of these <body> <p class = double-red>this is the second examination in CMPSCI 120. We are going to see if you can define borders around a paragraph using embedded CSS styles so that it looks like this. <p class = single-green> Please complete the html code that will cause this page to be rendered 9

10 2. Complete the CSS styles (fill in the attributes & values in the following so it renders as shown: <html> <head> <title>test Example</title> <style type="text/css"> div.container width: 90%; margin: 10px; <- don t take off for this! border: 5px solid gray; <- might be each separate attributes on different lines line-height:120%; div.header padding: 0.5em; color: white; background-color: gray; h1.header margin: 5px; div.left float: left; width: 150px; margin: 10px; padding: 0; div.content margin-left: 180px; border-left: 5px solid gray; <- might be each separate attributes on different lines padding: 1em; </style> </head> <body> <div class="container"> <div class="header"> <h1 class="header">examination 2 Fall 2009</h1> </div> <div class="left"> <p>"intellectual growth should commence at birth and cease only at death"- Albert Einstein</p> </div> <div class="content"> <h2>can you do this layout?</h2> <p>we are learning to do layouts!!</p> </div> </body></html> 10

11 3. Write a for loop that prints out all even numbers beginning with 2 and ending with 50. <html> <body> for (i = 2; i <= 50; i=i+2) document.write("the number is " +i); document.write("<br />"); </script> </body> </html> 4. Write a nested for loop that prints out the following, but hides it from old browsers that do not @@@@@ <html> <head> <title>nested loops</title> </head> <body> <script language=javascript>  </script> </body> </html> 11

CS 350 Internet Applications I Name: Exam II (CSS) October 29, 2013

CS 350 Internet Applications I Name: Exam II (CSS) October 29, 2013 Part I. (50%) Multiple Guess Choice. 1. What does CSS stand for? a. Creative Style Sheets b. Computer Style Sheets c. Cascading Style