Update oDesk PHP Test Question and Answer

1.Does PHP 5 support exceptions?

1.     Yes

2.     No

2.For the following code: <?php function Expenses() { function Salary() { } function Loan() { function Balance() { } } } ?> Which of the following sequence will run successfully?

1.     Expenses();Salary();Loan();Balance();

2.     Salary();Expenses();Loan();Balance();

3.     Expenses();Salary();Balance();Loan();

4.     Balance();Loan();Salary();Expenses();

3.What function should you use to join array elements with a glue string?

1.     join_st

2.     implode

3.     connect

4.     make_array

5.     None of these

4.What is the best practice for running MySQL queries in PHP? Consider the risk of SQL injection.

1.     Use mysql_query() and variables: for example: $input = $_POST['user_input']; mysql_query("INSERT INTO table (column) VALUES ('" . $input . "')");

2.     Use PDO prepared statements and parameterized queries: for example: $input= $_POST["user-input"] $stmt = $pdo->prepare('INSERT INTO table (column) VALUES (":input"); $stmt->execute(array(':input' => $input));

3.     Use mysql_query() and string escaped variables: for example: $input= $_POST["user-input"] $input_safe = mysql_real_escape_string($input); mysql_query("INSERT INTO table (column) VALUES ('" . $input. "')");

4.     Use mysql_query() and variables with a blacklisting check: for example: $blacklist = array("DROP","INSERT","DELETE"); $input= $_POST["user-input"] if (!$array_search($blacklist))) mysql_query("INSERT INTO table (column) VALUES ('" . $input. "')");

5.What is the best way to change the key without changing the value of a PHP array element?

1.     $arr[$newkey] = $oldkey; unset($arr[$oldkey]);

2.     $arr[$newkey] = $arr[$oldkey]; unset($arr[$oldkey]);

3.     $newkey = $arr[$oldkey];unset($arr[$oldkey]);

4.     $arr[$newkey] = $oldkey.GetValue(); unset($arr[$oldkey]);

6.What is the correct line to use within the php.ini file, to specify that 128MB would be the maximum amount of memory that a script may use?

1.     memory_limit = 128M

2.     limit_memory = 128M

3.     memory_limit: 128M

4.     limit_memory: 128M

7.What is the correct way to send a SMTP (Simple Mail Transfer Protocol) email using PHP?

1.     s.sendmail($EmailAddress, [$MessageBody], msg.as_string())

2.     sendmail($EmailAddress, "Subject", $MessageBody);

3.     mail($EmailAddress, "Subject", $MessageBody);

4.     <a href="mailto:$EmailAddress">$MessageBody</a>

8.What is the string concatenation operator in PHP?

1.     +

2.     ||

3.  .

4.     |||

5.     None of these

9.What will be the output of the following code? <? echo 5 * 6 / 2 + 2 * 3; ?>

1.     1

2.     20

3.     21

4.     23

5.     34

10.What enctype is required for file uploads to work?

1.     multipart/form-data

2.     multipart

3.     file

4.     application/octect-stream

5.     None of these

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Update oDesk XHTML 1.0 Test Answer

1.A defines the document type of any XHTML document. It can be of three types:

1.     Strict, Transitional, and Frameset

2.     Strict, Transitional and Loose

3.     Fixed, Intermediate and Loose

4.     Fixed, Intermediate, Frameset

2.What do you understand by cellspacing?

1.     It makes the cell span more than one column

2.     It specifies the space between the cell wall and the contents of the cell

3.     It specifies the space between two cells

4.     It makes the cell span more than one ro

3.What do you understand by cellpadding?

1.     It makes the cell span more than one column

2.     It specifies the space between the cell wall and the contents of the cell

3.     It specifies the space between two cells

4.     It makes the cell span more than one row

4.A developer wrote this image tag: <img src ="states.gif" width ="330" height ="406" alt="States" usemap ="#statemap" /> What code should follow this?

1.     <map id="statemap" name="statemap"> <area shape="rect" coords="0,0,82,126" href="state1.htm" alt="State1" /> </map>

2.     <map id="statemap" name="statemap"></map> <area shape="rect" coords="0,0,82,126" href="state1.htm" alt="State1" />

3.     <map id="statemap" name="statemap"> <imgarea shape="rect" coords="0,0,82,126" href="state1.htm" alt="State1" /></map>

4.     <map id="statemap" name="statemap"></map> <imgarea shape="rect" coords="0,0,82,126" href="state1.htm" alt="State1" />

5.How will you import a style sheet named "basic.css" in your web page?

1.     <import name="stylesheet" url="basic.css">

2.     <link rel="stylesheet" type="text/css" href="basic.css"/>

3.     <style name="stylesheet" url="basic.css">

4.     <link item="stylesheet" type="text/css" href="basic.css">

6.How will you specify a comment in an XHTML document?

1.     <!!-- Here is a comment... --!>

2.     <-- Here is a comment.. -->

3.     <!-- Here is a comment.. -->

4.     <! Here is a comment... --!>

7.How will you specify the language attribute in XHTML?

1.<div lang="en" xml:lang="en">Listing A</div>
2.<div language="en">Listing A</div>
3.<div language="en" xhtml:lang="en">Listing A</div>
4.<div xml:language="en">Listing A</div>

8.On one of your web pages named "Listing.xhtml" you specified a target like this: <a name="target4">Old Listing</a> How will you make a link to the above target?

1.     <a url="#target4">Check Old Listing as well</a>

2.     <a href="#target4">Check Old Listing as well</a>

3.     <link url="target4">Check Old Listing as well</link>

4.     <a href="Listing.target4">Check Old Listing as well</a>

9.Please choose the most appropriate option. One of the differences between XHTML and HTML 4.01 is that the "name" attribute has been replaced by the "id" attribute in:

1.     img and applet tag

2.     simg and map tags

3.     map and frame tags

4.     img, map, frame and applet tags

5.     frame, applet, style and map tags

10.The following registration form was coded by a programmer in XHTML:
1. <!-- Start of the Form Fields -->
2. Name:
3. <input type="text" name="name" maxlength="50" />
4. Registration Date:
5. <input readonly type="text" value="javascript:getDate();" />
6. Account Type:
7. <select name="Account">
8. <option "selected" value="Primary">Primary</option>
9. <option value="Secondary">Secondary</option>
10. </select>

Which of the following options is true with regard to this XHTML document?

1.     The syntax of the input tag at line 3 is incorrect

2.     The readonly attribute in line 5 is not correctly coded

3.     The syntax of the select tag is not correct

4.     Maxlength cannot be specified with text boxes

11.What do you understand by the following line of code?
<html xmlns="http://www.w3.org/TR/REC-xml-names">

1.     xmlns specifies the URL to qualify the names used in the XHTML document

2.     xmlns means html-xml number sequence

3.     Elimination of xmlns tag will result in the document not being validated by a w3.org validator

4.     The page will not be displayed properly if the URL is changed to "http://www.w3.org/1999/xhtml"

12.What is the numeric entity representation of the 'less than' sign (its entity name is '<') ?

1.     60;#

2.     < 

3.     &60#;

4.     #60&;

13.Which attribute specifies the submit URL in a form?

1.     method

2.     action

3.     name

4.     id

14.Which attributes of the <table> tag is deprecated in HTML 4.01 and not supported in strict DTD XHTML?

1.     align

2.     bgcolor

3.     cellspacing

15.Which of the following statements is correct for the <blockquote> tag?

1.     The text under blockquote must be enclosed in a block level element in a strict DTD document

2.     The attribute named "cite" must be specified

3.     Closing the tag is optional

4.     It doesn't place an empty line after the text

16.Which of the following is correct about the <!DOCTYPE ...> tag?

1.     It is not considered to be mandatory as per the XHTML specification

2.     It must have a closing tag

3.     It should come just after the <html> tag

4.     Its declaration is not a part of the XHTML document itself

5.     None of the above

17.Which of the following is correct for an image?

1.     An image must be resized in an editor to fit in the specified space on a webpage

2.     If you have a big image but specify smaller height and width attributes in the <img> tag, only the top left portion of the image will be displayed in the browser

3.     Both a and b are correct

4.     The height and width attributes allow resizing the image on the webpage

18.Which of the following is correct regarding the frame attribute of the table tag?

1.     It is used to add a frame to the table

2.     A "hsides" frame attribute will show the border lines for horizontal sides of the table only

3.     A "hsides" frame attribute will not show the border lines for horizontal sides of the table only

4.     A "hsides" frame attribute will add a scrollable frame on the horizontal sides of the table

19.Which of the following is incorrect about the relation between HTML and XHTML?

1.     XHTML is a stricter and cleaner version of HTML

2.     XHTML is almost identical to HTML 4.01

3.     XHTML and HTML both are used to generate dynamic content

4.     XHTML brings together the elements of HTML and the syntax of XML

20.Which of the following is incorrect with regard to the <select> tag?

1.     The "name" should be specified

2.     The "disabled" attribute disables the drop-down list

3.     The "multiple" attribute allows the user to choose multiple options

4.     The text specified in the "value" is displayed in the drop-down list

5.     None of the above

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