Quizzes – EduHub

Question 1

Which SQL statement is used to update data in a database?

SAVE AS UPDATE MODIFY SAVE

Question 2

Which jQuery method is used to hide selected elements?

display(none) hide() hidden() visible(false)

Question 3

Which of the following statement would be used if you want to show the structure of the Product table in your inventory?

DESCRIBE Product DISTINCT Product None of the above STRUCTURE Product

Question 4

Which of the following method can be used to get the current offset of the first matched element?

offset() outerHeight([margin]) offsetParent() position()

Question 5

Which SQL clause is used to restrict the rows returned by a query?

AND HAVING WHERE FROM

Question 6

Which of the following selector selects all checked boxes in a form?

$('input[checked]') $('checked') $(':checked') $('input[checked=checked]')

Question 7

Which of the following method retrieves the total number of rows affected by an INSERT, UPDATE, or DELETE operation?

affected_rows() num_rows() None of the above Both a & b

Question 8

Which of the following method can be used to apply multiple CSS properties using a single jQuery method?

jQuery() style() css() map()

Question 9

Which SQL statement is used to extract data from a database?

GET EXTRACT SELECT OPEN

Question 10

Which of the following method can be used to locate all the descendant elements of a particular type?

next(selector) children(selector) find(selector) filter(selector)

Question 11

How do you view all tables in MySQL?

VIEW TABLES ALTER TABLES SELECT TABLES SHOW TABLES

Question 12

Which event type occurs when an element loses focus?

Blur Load Focus Change

Question 13

What does the SQL GROUP BY clause do?

Sorts rows in ascending order Groups rows that have the same values in specified columns Filters rows based on a condition Joins two or more tables

Question 14

Which of the following method gets the HTML contents (innerHTML) of the first matched element in jQuery?

html() text(val) replaceWith(content) jQuery()

Question 15

Which command deletes both the table data and the table structure?

DROP REMOVE DELETE TRUNCATE

Question 16

Which jQuery function is used to prevent code from running before the document is fully loaded?

$(document).load() $(window).load() $(document).ready() $(body).onload()

Question 17

Which SQL statement is used to retrieve unique values from a column?

SELECT UNIQUE column_name FROM table_name; SELECT DIFFERENT column_name FROM table_name; SELECT SINGLE column_name FROM table_name; SELECT DISTINCT column_name FROM table_name;

Question 18

Which of the following method can be used to either fetch or set the value of an attribute from the first element?

val() text(val) html() attr()

Question 19

What is jQuery?

JavaScript Language JavaScript Library PHP Method JavaScript Method

Question 20

Which constraint ensures that a column cannot have NULL values?

PRIMARY KEY CHECK UNIQUE NOT NULL

Question 21

Which of the following method can be used to filter out elements from the set of matched elements?

add() filter(selector) select() filter_out()

Question 22

What is the purpose of using the .bind() method in jQuery?

To reduce the matched set to a single element To apply CSS properties using jQuery To attach standard JavaScript events to elements To filter out all elements from the matched set

Question 23

How do you convert ISAM tables to MyISAM tables?

MODIFY TABLE table_name TYPE=MYISAM; ADD TABLE table_name TYPE=MYISAM; ALTER TABLE table_name TYPE=MYISAM; CHANGE TABLE table_name TYPE=MYISAM;

Question 24

Which of the following selector is used to select only form elements?

$('input') $(':input') $('input[type=*]') $('form')

Question 25

Which method removes all matched elements from the DOM?

remove(expr) removeAll(selector) empty() remove()

Question 26

Which command is used to remove an existing table or database?

None of the above DELETE DROP TABLE Either DROP TABLE or DELETE

Question 27

Which jQuery utility function parses the returned JSON string?

getJSON() get() getScript() parseJSON()

Question 28

Which utilities are used to export data from a MySQL server?

mysqlhotcopy A & C mysqldump mysqlshow

Question 29

Which jQuery function is used to set the plain text contents of all matched elements?

$(selector).add(val) $(selector).text(val) $(selector).html(val) $(selector).wrap(val)

Question 30

Which of the following method can be used to replace an element?

change() replace() replaceAll() replaceWith(content)

Question 31

How can we get a set of elements containing the unique next siblings?

children([selector]) nextAll(selector) next([selector]) find(selector)

Question 32

What do you mean by sanitizing input?

How to perform file system operations How to interact with data files None of the above Preventing users from passing harmful data

Question 33

Which file is responsible for configuring MySQL on the Windows platform?

mysql.ini php.ini my.cnf my.ini

Question 34

Which of the following method can be used to remove event handlers?

empty() die() delete() remove()

Question 35

Which SQL statement is used to process the rows in a cursor?

GET FETCH READ None of the above

Question 36

Which of the following method can be used to wrap the inner child contents of each matched DOM element?

wrapInner(elem) wrapInner(html) wrapAll(html) wrap(html)

Question 37

Which command should be used to connect as the anonymous user of a MySQL server running on localhost?

mysql -u mysql mysql -u anon mysql -u anonymous

Question 38

Which symbol always starts a jQuery statement?

Parentheses () Plus sign + Equal sign = Dollar sign and parentheses $()

Question 39

How can we bind multiple events in jQuery?

getbind() param() bindparam() bind()

Question 40

With SQL, how do you select all the columns from a table named "Persons"?

SELECT *. Persons SELECT [all] FROM Persons SELECT * FROM Persons SELECT Persons