Q10

Question 1

Which PHP function returns the number of characters in a string?
 A. length()
 B. strlen()
 C. numofchars()
 D. none of the above

Answer 1

B. strlen()

Question 2

Which of these is an example of input validation?
A. is it in the correct format?
B. is it safe from hackers?
C. is it free from overflows and other critical errors?
D. all of the above

Answer 2

D. all of the above

Question 3

which of these is NOT a code smell?
 A. duplicated code
 B. Small classes
 C. meaningless names
 D. unused code

Answer 3

B. Small classes

Question 4

Decision complexity is the type that reflects the complexity of the decisions in your program
A. True
B. False

Answer 4

A. True

Question 5

Which of these statements about Arrays is incorrect?
A. you cannot create an array of numbers
B. if you use the array() command a second time it will overwrite the array variable.
C. if an element is not defined it is ‘unset’ and can be checked by the ‘isset’ function
D. none of the above (tey are all correct)

Answer 5

A. you cannot create an array of numbers

Question 6

Which of these is correct about operators?
A. ++$x performs a “post-increment” operation
B. || performs a “or” operation
C. $x++ performs a “pre-increment” operation
D. ! performs “and/or” operation

Answer 6

B. || performs a “or” operation

Question 7

Which of these is correct about Strings and Arrays?
A. we can convert an array into a string with EXPLODE
B. a string is an array of characters
C. we specify what character to use as a connector
D. We can convert a string into an array with IMPLODE

Answer 7

B. a string is an array of characters

Question 8

We can sort the data in PHP but we can also sort database records by using the ORDER BY keywords.
A. True
B. False

Answer 8

A. True

Question 9

You can have double quotes inside single quoted text
A. True
B. False

Answer 9

A. True

Question 10

Echo with double quotes does not do variable substitution
A. True
B. False

Answer 10

B. False

Question 11

The CANCEL keyword will automatically execute a loop
A. True
B. False

Answer 11

B. False

Question 12

Which of these is correct about forms?
A. processing data submitted from an HTML form on a web page is perhaps the most fundamental task performed by a PHP script
B. the HTML < form > tag’s action attribute is used to nominate the PHP script that will process the form data
C. the < form > tag’s method attribute is used to specify how the data is sent to the script – typically by the POST method
D. all of the above

Answer 12

D. all of the above

Question 13

The HTML tag that causes the browser to reload is:
 A. RELOAD
 B. NEW
 C. FORM
 D. None of the above

Answer 13

C. FORM

Question 14

The code “INPUT TYPE=’INPUT’” will always create a button with the word “SUBMIT” in it.
A. True
B. False

Answer 14

B. False

Question 15

We can use the PHP DATE function to extract and display the current time?
A. True
B. False

Answer 15

A. True

Question 16

To allow the user to select two different radio buttons:
A. we specify different values
B. we specify different types
C. we specify different names
D. it can’t be done: radio buttons only allow ONE selection

Answer 16

C. we specify different names

Question 17

If the form specifies an input field “temperature” the action handler code can access the value by referencing the variable “$temperature”.
A. True
B. False

Answer 17

B. False

Question 18

To set the value of a cookie named “course ”to the value “221” we would issue the command: $_COOKIE[‘cookie’]=221;
A. True
B. False

Answer 18

B. False

Question 19

When setting cookies:
 A. it must be done before the  tag
 B. we can only do it one time in the code
 C. we cannot overwrite the cookie
 D. none of the above

Answer 19

A. it must be done before the tag

Question 20

A “timing failure” results when interacting system components are not properly synchronized.
A. True
B. False

Answer 20

A. True

Question 21

What do we use to specify inline CSS?
 A. CSS=’ ‘
 B. INLINECSS=’ ‘
 C. ICSS=’ ‘
 D. none of the above

Answer 21

D. none of the above

Question 22

What is true about $_POST?
 A. It is an array
 B. It is not a constant
 C. It is a superglobal
 D. all of the above

Answer 22

D. all of the above

Question 23

To create selection boxes, we use: type = “select”

Answer 23

B. False