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Computer Science MCQs

Embarking on the vast digital realm, Computer Science is a journey of discovery. It delves into crafting intelligent systems, solving problems through software, and extends to the realm of Artificial Intelligence—teaching computers language understanding and image recognition. Beyond coding, it encompasses database management, utilizing extensive data sets, and ensuring technology serves us optimally.

Computer Scientists contribute to networks, safeguarding information, and enhancing user-friendliness in technology applications, from phone apps to websites. Upholding ethical standards, we prioritize fairness, safety, and privacy. As technology evolves, Computer Science evolves with it, continually enhancing our digital landscape. Join us on this exciting journey into the future of a better, more inclusive digital world! #ComputerScience #TechJourney #SimpleTechExplanation

Which HTML tag is used to define the structure of an HTML document, including the document's title and charset?
  1. A-<html>
  2. B-<head>
  3. C-<structure>
  4. D-<meta>
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What is the purpose of the HTML <meta> tag?
  1. A-To define a hyperlink
  2. B-To create a meta description
  3. C-To define metadata about the document
  4. D-To include external scripts
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In HTML, which tag is used to create an unordered list?
  1. A-<ul>
  2. B-<ol>
  3. C-<li>
  4. D-<list>
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Which of the following tags is used to insert a line break without any extra space?
  1. A-<lb>
  2. B-<br>
  3. C-<newline>
  4. D-<break>
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What does the HTML element <br> represent?
  1. A-What does the HTML element <br> represent?
  2. B-Break
  3. C-Bullet
  4. D-Blockquote
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Which attribute is used to define inline styles in HTML?
  1. A-style
  2. B-css
  3. C-design
  4. D-format
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What is the purpose of the HTML <head> tag?
  1. A-To define the main content of the document
  2. B-To contain metadata about the document
  3. C-To create a heading in the document
  4. D-To specify the background color of the page
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Which HTML tag is used to create a hyperlink?
  1. A-<link>
  2. B-<anchor>
  3. C-<a>
  4. D-<href>
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In HTML, comment line is as :
  1. A-// Comment Line
  2. B-/* Comment Line */
  3. C-– Comment Line —
  4. D-<!– Comment Line –>
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Which is responsible for Standardization of HTML:
  1. A-ICNA
  2. B-W3C
  3. C-IEEE
  4. D-Google
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XHTML stands for:
  1. A-Extreme Hyper Text Markup Language
  2. B-Expire Hyper Text Markup Language
  3. C-Expert Hyper Text Markup Language
  4. D-Extensible Hyper Text Markup Language
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To interpret the HTML code, and get a visual layout we need a:
  1. A-Turbo-C Compiler
  2. B-Any Text Editor
  3. C-Any Web-Browser
  4. D-Google’s V8 engine
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………. is used to import an external style sheet in a manner similar to the <link> element.
  1. A-@insert
  2. B-@import
  3. C-#import
  4. D-#insert
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We can handle old browsers by placing CSS codes inside.
  1. A-//……………….//
  2. B-<!………………>
  3. C-/*………………*/
  4. D-None of the above
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CSS comments are inserted inside .
  1. A-//……………….//
  2. B-<!………………>
  3. C-/*………………*/
  4. D-All of the above
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The correct example of class selector is .
  1. A-h2.type1 {color: #000000;}
  2. B-h2 type1 {color: #000000;}
  3. C-h2 #type1 {color: #000000;}
  4. D-#h2 type1 {color: #000000;}
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Which is not the selector type of CSS?
  1. A-Type selector
  2. B-Universal selector
  3. C-Local selector
  4. D-Descendant selector
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 Choose the correct HTML tag for the largest heading
  1. A-<h6>
  2. B-<heading>
  3. C-<head>
  4. D-<h1>
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What does HTML stand for?
  1. A-Hyperlinks and Text Markup Language
  2. B-Home Tool Markup Language
  3. C-Hyper Text Markup Language
  4. D-None of the above
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What is a FTP program used for?
  1. A-Transferring files to and from an Internet server
  2. B-Designing a website
  3. C-Connecting to the internet
  4. D-None of the above
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While searching on the Internet, you decided to check in more than one search engine because —
  1. A-that will avoid false information
  2. B-that will avoid repetition of information
  3. C-each engine produces different results
  4. D-all Web users prefer this technique
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Which domain must be present in the website address (URL) of a university library?
  1. A-.org (organization)    
  2. B-.gov (government)
  3. C-.edu (education)      
  4. D-.com (commercial)
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To determine if a sports website has current information, you should check —
  1. A-how many other sites are listed
  2. B-the website address
  3. C-when the site was last updated
  4. D-how the site is organized
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A keyword is the —
  1. A-main search word
  2. B-name of a search engine
  3. C-word used to get rid of results  
  4. D-style of the search word
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Which of the following is used to explore the Internet?
  1. A-Browser
  2. B-Spreadsheet
  3. C-Clipboard
  4. D-Draw
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Which would be the best keyword(s) for you to enter to search an electronic encyclopedia for information about the World Cup soccer tournament?
  1. A-Soccer
  2. B-Soccer tournament
  3. C-Sports
  4. D-World Cup soccer
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Height attribute specifies the height of which frame?
  1. A-iframe
  2. B-jframe
  3. C-inline frame
  4. D-outline frame
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Seamless is a __________ type of attribute.
  1. A-integer
  2. B-Char
  3. C-Boolean
  4. D-Float
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Which storage object is used for storing the data with no expiry date?
  1. A-Session storage
  2. B-local storage
  3. C-mass storage
  4. D-stack storage
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Canvas is able to draw the 2D graphics using—————-
  1. A-XML
  2. B-HTML
  3. C-Java script
  4. D-XHTML
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_________ Function displays the latitude or Longitude in geoLocation in HTML5.
  1. A-showLocation()
  2. B-showPosition()
  3. C-both a and b
  4. D-showStatus()
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Where does web worker(s) script run?
  1. A-in forground
  2. B-in background
  3. C-both a and b
  4. D-can’t determinte
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Which file is used by the browser to fetch the appropriate data ?
  1. A-Text file
  2. B-HTML file
  3. C-XML file
  4. D-manifest file
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The manifest file is __________.
  1. A-Text file
  2. B-HTML file
  3. C-XML file
  4. D-java file
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________ property returns the url of current audio/video.
  1. A-currentSrc
  2. B-controls
  3. C-ended
  4. D-mediaGroup
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Terminate() method in HTML5 is used for ____________.
  1. A-terminate everything
  2. B-terminate all method
  3. C-terminate a web worker
  4. D-terminate program
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<canvas> elements is only a _________ to the graphics.
  1. A-component
  2. B-container
  3. C-attribute
  4. D-method
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For defining the possible link break which tag do we have to use HTML5?
  1. A-<video>
  2. B-<track>
  3. C-<summary>
  4. D-<wbr>
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Which element provides a secure way to authenticate the user?
  1. A-<keygen>
  2. B-<datalist>
  3. C-<output>
  4. D-<input>
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Target attribute is used for
  1. A-opening new document
  2. B-selecting previous document
  3. C-deleting frame
  4. D-none of above
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<output> element represent?
  1. A-Authenticate the user
  2. B-Result of a calculation
  3. C-Pre-defines value
  4. D-none of these
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Which of the following term describes the art of making dynamic & interactive pages?
  1. A-DHTML
  2. B-HTML
  3. C-XHTML
  4. D-XML
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Which of the following is black-box oriented and can be accomplished by applying the same black-box methods discussed for conventional software?
  1. A-Conventional testing
  2. B-OO system validation testing
  3. C-Test case design
  4. D-Both Conventional testing and OO system validation testing
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_____________ categorizes class operations based on the generic function that each performs.
  1. A-Category-based partitioning
  2. B-Attribute-based partitioning
  3. C-State-based partitioning
  4. D-None of the mentioned
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What refers to the externally observable structure of an OO program?
  1. A-Deep structure
  2. B-Surface structure
  3. C-Core structure
  4. D-All of the above
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The object of ___________within an OO system is to design tests that have a high likelihood of uncovering plausible bugs.
  1. A-Fault-based testing
  2. B-Integration testing
  3. C-Use-based testing
  4. D-Scenario-based testing
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Which of the following is a part of testing OO code?
  1. A-Validation tests
  2. B-Integration tests
  3. C-Class tests
  4. D-System tests
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__________ methods can be used to drive validations tests?
  1. A-Yellow-box testing
  2. B-Black-box testing
  3. C-White-box testing
  4. D-All of the mentioned
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Which of the following is one of the steps in the integration testing of OO software?
  1. A-cluster testing
  2. B-thread-based testing
  3. C-use-based testing
  4. D-none of the above
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Which testing integrates the set of classes required to respond to one input or event for the system?
  1. A-cluster testing
  2. B-thread-based testing
  3. C-use-based testing
  4. D-none of the mentioned
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The construction of object-oriented software begins with the creation of
  1. A-design model
  2. B-analysis model
  3. C-code levels
  4. D-both design and analysis model
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A make-buy decision is based on whether
  1. A-The software may be purchased off-the-shelf
  2. B-“Full-experience” or “Partial-experience” software components should be used
  3. C-Customer-built software should be developed
  4. D-All of the mentioned
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Who suggested the four different approaches to the sizing problem?
  1. A-Putnam
  2. B-Myers
  3. C-Boehm
  4. D-Putnam and Myers
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How many forms exists of Barry Boehm’s COCOMO Model?
  1. A-Two
  2. B-Three
  3. C-Four
  4. D-No form exists
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The expected value for the estimation variable (size), S, can be computed as a weighted average of the optimistic(Sopt), most likely (Sm), and pessimistic (Spess) estimates given as
  1. A-EV = (Sopt + 4Sm + Spess)/4
  2. B-EV = (Sopt + 4Sm + Spess)/6
  3. C-EV = (Sopt + 2Sm + Spess)/6
  4. D-EV = (Sopt + 2Sm + Spess)/4
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Which software project sizing approach develops estimates of the information domain characteristics?
  1. A-Function point sizing
  2. B-Change sizing
  3. C-Standard component sizing
  4. D-Fuzzy logic sizing
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If a Direct approach to software project sizing is taken, size can be measured in
  1. A-LOC
  2. B-FP
  3. C-OC and FP
  4. D-None of the mentioned
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Why is decomposition technique required?
  1. A-Software project estimation is a form of problem solving
  2. B-Developing a cost and effort estimate for a software project is too complex
  3. C-All of the mentioned
  4. D-None of the mentioned
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Which of the following is a example of Configuration Items ?
  1. A-SCM procedures
  2. B-Source code
  3. C-Software design descriptions
  4. D-All of the mentioned
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How are baselines verified?
  1. A-By reviews
  2. B-By inspections
  3. C-By testing of code
  4. D-All of the above
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What is one or more software configuration items that have been formally reviewed and agreed upon and serve as a basis for further development?
  1. A-Baseline
  2. B-Cumulative changes
  3. C-CM
  4. D-Change Control
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Which of the following is not a change management process?
  1. A-Log the changes
  2. B-Estimate impact on effort and schedule
  3. C-Review impact with stakeholders
  4. D-None of the mentioned
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What allows different projects to use the same source files at the same time?
  1. A-Version Control
  2. B-Access control
  3. C-CM Process
  4. D-Version Control and Access control
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Which of the following is not a main phase in Configuration Management (CM) Process?
  1. A-CM Planning
  2. B-Executing the CM process
  3. C-CM audits
  4. D-None of the mentioned
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When code is made available to others, it goes in a/an?
  1. A-hard drive
  2. B-access-controlled library
  3. C-servers
  4. D-access control
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SCM stands for
  1. A-Software Control Management
  2. B-Software Configuration Management
  3. C-Software Concept Management
  4. D-None of the above
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When do we use a HAVING clause?
  1. A-To limit the output of  a query
  2. B-To limit the output of a query using an aggregate function only
  3. C-When GROUP by is used
  4. D-Both a and c above
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A view is nothing but a _____________ table or a stored query.
  1. A-Dynamic
  2. B-Real
  3. C-Virtual
  4. D-Static
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How do I find out all databases, starting with `test to which I have access to?
  1. A-SHOW DATABASES LIKE `%test%`;
  2. B-SHOW DATABASES LIKE `%test;
  3. C-SHOW DATABASES LIKE `’test’%’;
  4. D-SHOW DATABASES LIKE `%test%’;
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USE keyword is used to select a ____
  1. A-Table
  2. B-Column
  3. C-Database
  4. D-All of the above
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Which of the following ways below are the correct way to get the current date?
  1. A-SELECT CURTIME();
  2. B-SELECT CURDATE();
  3. C-SLELCT CURRRENT_TIME()
  4. D-All of the above
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How can we get the number of records or rows in a table?
  1. A-Using COUNT
  2. B-Using NUM
  3. C-Using NUMBER
  4. D-Both a and c above
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What is a candidate key?
  1. A-Used to uniquely identify a row
  2. B-Alias for primary key
  3. C-Used to identify a column
  4. D-Alias for foreign key
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On executing the DELETE command, if you get an error “foreign key constraint” – what does it imply?
  1. A-Foreign key not defined
  2. B-Table is empty
  3. C-Connectivity issue
  4. D-Data is present in the other table
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i-am-a-dummy flag is used Make the MySQL engine refuse UPDATE and which other command?
  1. A-WHERE
  2. B-INSERT
  3. C-DELETE
  4. D-TRUNCATE
  5. MCQ By: MCQSEXAM
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Which of the following file extension is valid MyISAM file extension?
  1. A-.ism
  2. B-.myd
  3. C-.my
  4. D-.mys
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How much storage space does DATETIME require?
  1. A-4 bytes
  2. B-2 bytes
  3. C-8 bytes
  4. D-1 bytes
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. User() function return the current user name and ___________
  1. A-password
  2. B-host name
  3. C-both a and b above
  4. D-database name associated with the user
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A SELECT command without a WHERE clause returns?
  1. A-All the records from a table that match the previous WHERE clause
  2. B-All the records from a table, or information about all the records
  3. C-SELECT is invalid without a WHERE clause
  4. D-Nothing
  5. MCQ By: MCQSEXAM
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The main MySQL program that does all the data handling is called?
  1. A-mysql.exe
  2. B-mysql
  3. C-mysqld
  4. D-httpd
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Which of the following commands should be used to create a database named “student”?
  1. A-CREATE ?I student
  2. B-CREATE DATABASE student
  3. C-DATABASE /student
  4. D-DATABSE student
  5. MCQ By: MCQSEXAM
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How much character are allowed to create database name?
  1. A-55
  2. B-72
  3. C-64
  4. D-125
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Which of the following is used to delete an entire MYSQL database?
  1. A-mysql_drop_database
  2. B-mysql_drop_entiredb
  3. C-mysql_drop_db
  4. D-mysql_drop_dbase
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What SQL clause is used to restrict the rows returned by a query?
  1. A-AND
  2. B-WHERE
  3. C-HAVING
  4. D-FROM
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Which of the following is not a valid aggregate function?
  1. A-COUNT
  2. B-MIN
  3. C-MAX
  4. D-COMPUTE
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 Which function used to get the current time in mysql?
  1. A-getTime()
  2. B-Time()
  3. C-NOW()
  4. D-Date()
  5. MCQ By: MCQSEXAM
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In a LIKE clause, you can ask for any 6 letter value by writing?
  1. A-LIKE ??????
  2. B-LIKE .{6} Answer 5: LIKE ^.{6}$
  3. C-LIKE …… (that’s six dots)
  4. D-LIKE ______ (that’s six underscore characters)
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MySQL is
  1. A-A Programming language
  2. B-A Programming language
  3. C-A technique for writing reliable programs
  4. D-A Relational Database Management System
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In a LIKE clause, you can could ask for any value ending in “qpt” by writing
  1. A-LIKE %qpt
  2. B-LIKE *ton
  3. C-LIKE ton$
  4. D-LIKE ^.*ton$
  5. MCQ By: MCQSEXAM
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Which SQL statement is used to insert a new data in a database?
  1. A-INSERT INTO
  2. B-UPDATE
  3. C-ADD
  4. D-INSERT NEW
  5. MCQ By: MCQSEXAM
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To use MySQL on your computer, you’ll need?
  1. A-FTP and Telnet
  2. B-Some sort of client program to access the databases
  3. C-A Browser
  4. D-Perl, PHP or Java
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Which of the following can add a row to a table?
  1. A-Add
  2. B-Insert
  3. C-Update
  4. D-Alter
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To remove duplicate rows from the result set of a SELECT use the following keyword:
  1. A-NO DUPLICATE
  2. B-UNIQUE
  3. C-DISTINCT
  4. D-None of the above
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MySQL runs on which operating systems?
  1. A-Linux and Mac OS-X only
  2. B-Any operating system at all
  3. C-Unix, Linux, Windows and others
  4. D-Unix and Linux only
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Which function returns an array consisting of associative key/value pairs?
  1. A-count()
  2. B-array_count()
  3. C-array_count_values()
  4. D-count_values()
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Which function can be used to move the pointer to the previous array position?
  1. A-last()
  2. B-before()
  3. C-prev()
  4. D-previous()
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Which in-built function will add a value to the end of an array?
  1. A-array_unshift()
  2. B-into_array()
  3. C-inend_array()
  4. D-array_push()
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Which function will return true if a variable is an array or false if it is not?
  1. A-this_array()
  2. B-is_array()
  3. C-do_array()
  4. D-in_array()
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PHP’s numerically indexed array begin with position __.
  1. A-1
  2. B-2
  3. C-0
  4. D--1
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Which one of the following is the right way of defining a function in PHP?
  1. A-function { function body }
  2. B-data type functionName(parameters) { function body }
  3. C-functionName(parameters) { function body }
  4. D-function fumctionName(parameters) { function body }
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