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Programming Portal MCQs [591]

You will find all MCQs which are added in Programming Portal by Admin

Q. Which PHP function returns the current script execution time limit?

Q. Which PHP INI directive enables output buffering?

Q. Which PHP function enables output compression?

Q. Which PHP superglobal stores raw POST body data?

Q. Which PHP function retrieves HTTP request headers?

Q. Which HTTP status code means unauthorized?

Q. Which HTTP status code represents resource creation?

Q. Which HTTP method is idempotent?

Q. Which PHP function converts JSON to an associative array?

Q. Which PHP function converts an array to JSON?

Q. Which PHP function sends a JSON response header?

Q. Which PDO error mode throws exceptions?

Q. Which PDO method rolls back a transaction?

Q. Which PDO method commits a transaction?

Q. Which PDO method starts a database transaction?

Q. Which PDO fetch mode returns results as objects?

Q. Which PDO fetch mode returns results as associative arrays?

Q. Which PDO method executes a prepared statement?

Q. Which PDO method prepares an SQL statement?

Q. Which PHP extension is required to use PDO?

Q. Which PHP function is used to check the type of a variable?

Q. Which PHP function is used to filter input data?

Q. Which PHP function returns the current memory usage?

Q. Which PHP function is used to generate random numbers?

Q. Which PHP function checks if a function exists?

Q. Which PHP function is used to shuffle an array?

Q. Which PHP function is used to generate a unique ID?

Q. Which PHP function is used to get all declared classes?

Q. Which PHP feature is used to reuse code across classes?

Q. Which PHP feature allows a class to implement multiple interfaces?

Q. Which PHP function is used to get the parent class name?

Q. Which PHP function is used to register an autoload function?

Q. Which PHP function is used to check whether a method exists in a class?

Q. Which PHP function returns the list of included files?

Q. Which PHP function is used to pause script execution?

Q. Which PHP keyword is used to refer to the current object?

Q. Which PHP function checks whether a class exists?

Q. Which PHP function is used to remove HTML and PHP tags from a string?

Q. Which PHP function is used to get the current script name?

Q. Which PHP function is used to send an email?

Q. Which PHP function escapes special characters for use in SQL?

Q. Which PHP function is used to write data to a file?

Q. Which PHP function is used to read a file into a string?

Q. Which PHP feature hides internal object details?

Q. Which keyword is used to access class members without creating an object?

Q. Which PHP function checks if a variable is set and not NULL?

Q. Which PHP operator suppresses error messages?

Q. Which PHP keyword is used to create an abstract class?

Q. Which PHP keyword is used to prevent a class from being inherited?

Q. Which PHP superglobal contains server and execution environment information?

Q. Which PHP function is used to check whether a variable is empty?

Q. Which function is used to convert a PHP array into a JSON string?

Q. Which PHP function adds one or more elements to the end of an array?

Q. Which PHP function removes the last element of an array?

Q. Which PHP function returns information about a variable?

Q. Which function verifies a hashed password?

Q. Which PHP function is used to hash passwords securely?

Q. Which function is used to get the last inserted ID in MySQL using mysqli?

Q. Which PHP function is used to stop script execution?

Q. Which function is used to convert JSON string into PHP array?

Q. Which PHP feature supports multiple methods with the same name?

Q. Which PHP function converts a string to lowercase?

Q. Which array stores uploaded file information?

Q. Which PHP function is used to upload files?

Q. Which function is used to get the current date in PHP?

Q. Which operator is used to compare both value and type in PHP?

Q. Which PHP function checks if a file exists?

Q. Which keyword is used to define a constant in PHP?

Q. Which of the following is a superglobal variable in PHP?

Q. Which PHP function is used to find the length of a string?

Q. Which PHP feature allows grouping data and functions together?

Q. Which of the following is used to prevent SQL Injection in PHP?

Q. Which function is used to include a file in PHP and stop execution on failure?

Q. Which PHP superglobal is used to collect form data sent with POST method?

Q. Which function is used to count elements in an array?

Q. Which data type is used to store true or false values in PHP?

Q. Which of the following is a valid PHP comment?

Q. Which function is used to display output in PHP?

Q. Which of the following is the correct way to end a PHP statement?

Q. Which symbol is used to start a variable in PHP?

Q. PHP is a _____ language.

Q. PHP code is executed on?

Q. Which operator is used to join strings in PHP?

Q. Which function is used to create an array in PHP?

Q. Which of the following is a correct PHP comment?

Q. What is the correct file extension for PHP files?

Q. Which statement is used to display output in PHP?

Q. Which tag is used to write PHP code?

Q. Which symbol is used to start a PHP variable?

Q. PHP is mainly used for?

Q. What is the output of this code?

Q. Which of the following is true about Rust's memory management?

Q. What is the output of this code?

Q. Which of the following types is used for optional values?

Q. What is the purpose of lifetimes in Rust?

Q. Which of the following is a macro in Rust?

Q. What does the 'unwrap()' method do on a Result type?

Q. Which keyword is used to implement traits in Rust?

Q. What is the output of this code?

Q. Which of the following is a valid way to define a struct in Rust?

Q. What is the purpose of the 'Result' type in Rust?

Q. Which keyword is used to return a value from a function in Rust?

Q. What is the result of the following code?

Q. Which of the following is a valid way to print to the console in Rust?

Q. What is the purpose of the 'cargo' tool in Rust?

Q. Which trait allows a type to be duplicated in Rust?

Q. What does the 'match' keyword do in Rust?

Q. Which of the following is a valid way to define a function in Rust?

Q. What is the default behavior of variables in Rust?

Q. Which keyword is used to define a mutable variable in Rust?

Q. What does the 'unwrap()' method do in Rust?

Q. Which trait must be implemented to allow a struct to be printed using println! with {:?}?

Q. What will be the output of the following Rust code?

Q. Which keyword is used to define an immutable variable in Rust?

Q. What is the ownership model in Rust primarily designed to prevent?

Q. What is the purpose of the "try" block in exception handling?

Q. What will be the output of the following piece of code:

Q. In Java, can a subclass override a private method from its superclass?

Q. In Java, can a subclass access package-private members (fields and methods) of its superclass defined in another package?

Q. If super class and subclass have same variable name, which keyword should be used to use super class?

Q. Does Java support multiple level inheritance?

Q. Which of the following is a method of wrapper Float for converting the value of an object into byte?

Q. Which of these methods is called when observed object has changed?

Q. What is the result of the following code snippet?

abstract class MyAbstract {
MyAbstract() {
System.out.println("Constructor");
}
}
class MyClass extends MyAbstract {
public static void main(String[] args) {
MyClass obj = new MyClass();
}
}

Q. In Java, can an abstract class have constructors?

Q. Suppose A is an abstract class, B is a concrete subclass of A, and both A and B have a default constructor. Which of the following is correct?
1. A a = new A();
2. A a = new B();
3. B b = new A();
4. B b = new B();

Q. What will be the output of the following Java program? (Note: file is made in c drive.)
import java.io.*;
class files 
{
    public static void main(String args[]) 
    {
        File obj = new File("/java/system");
        System.out.print(obj.getAbsolutePath());
    }
}

Q. What will be the output of the following Java code?
class Output 
{
    public static void main(String args[]) 
    {
        byte a[] = { 65, 66, 67, 68, 69, 70 };
        byte b[] = { 71, 72, 73, 74, 75, 76 };  
        System.arraycopy(a, 2, b, 1, a.length-2);
        System.out.print(new String(a) + " " + new String(b));
    }
}

Q. Which of function return absolute value of a variable?

Q. What will happen if we provide concrete implementation of method in interface?

Q. Which of these exceptions handles the situations when an illegal argument is used to invoke a method?

Q. What happens when we access the same variable defined in two interfaces implemented by the same class?

Q. What is the value of double consonant 'E' defined in Math class?

Q. What will be the output?
class A{
      int i = 10;
      public void printValue(){
            System.out.print("Value-A");
      }
}

class B extends A{
      int i = 12;
      public void printValue(){
            System.out.print("Value-B");
      }
}

public class Test{
      public static void main(String args[]){
            A a = new B();
            a.printValue();
            System.out.print(a.i);
      }
}

Q. What is the process of defining a method in a subclass having same name & type signature as a method in its superclass?

Q. What will be the output of the following Java code?
class overload 
{
    int x;
int y;
    void add(int a) 
    {
        x =  a + 1;
    }
    void add(int a, int b)
    {
        x =  a + 2;
    }        
}    
class Overload_methods 
{
    public static void main(String args[])
    {
        overload obj = new overload();   
        int a = 0;
        obj.add(6);
        System.out.println(obj.x);     
    }
}

Q. Which keyword is used to declare an interface in Java?

Q. Which keyword is used to prevent method overriding in Java?

Q. What is the purpose of the "return" statement in a method in Java?

Q. What is the prototype of the default constructor?
public class Test { }

Q. Given the following piece of code:
class Person{
        public int number;
}
public class Test{
        public void doIt(int i , Person p){
                i = 5;
                p.number = 8;
        }
        public static void main(String args[]){
                int x = 0;
                Person p = new Person();
                new Test().doIt(x, p);
                System.out.println(x + " " + p.number);
        }
}

What is the result?

Q. What will be the output of the following Java program?
class recursion 
{
    int func (int n) 
    {
        int result;
        result = func (n - 1);
        return result;
    }
} 
class Output 
{
    public static void main(String args[]) 
    {
        recursion obj = new recursion() ;
        System.out.print(obj.func(12));
    }
}

Q. What will be the output of the following Java program?
class box 
{
    int width;
    int height;
    int length;
    int volume;
    void volume() 
    {
         volume = width*height*length;
    } 
}    
class Output 
{ 
    public static void main(String args[])
    {
        box obj = new box();
        obj.height = 1;
        obj.length = 5;
        obj.width = 5;
        obj.volume();
        System.out.println(obj.volume);        
    } 
}

Q. What is the result of the expression 10 / 3 in Java?

Q. What is the result of the expression 10 > 5 ? 2 : 1 in Java?

Q. Which operator is used to perform logical AND in Java?

Q. What will be the output?

Q. Which method is used to find the index of the first occurrence of a specified character in a string in Java?

Q. What is the purpose of the charAt() method of a String object in Java?

Q. What is the correct way to create a new empty String object in Java?

Q. What will be the output?
public class Test{
     public static void main(String args[]){
           Object myObj = new String[]{"one", "two", "three"};
           {
          for(String s : (String[])myObj) 
         System.out.print(s + ".");
         }
     }
}

Q. Predict the output:
public class Test{
public static void main(String... args){
            int[] index = new int[5];
            System.out.println(index instanceof Object);
      }
}

Q. Which of the following is a primitive data type in Java?

Q. In Java, which data type is used to represent true or false values?

Q. Which of the following is not a valid identifier for a Java variable?

Q. What will be the output for the below code?
public class Test{
      int i=8;
      int j=9;
      public static void main(String[] args){
            add();
      }
      public static void add(){
            int k = i+j;
            System.out.println(k);
     }
}

Q. What will be the output for the below code?
public class Test{
      public static void main(String[] args){
            byte i = 128;
            System.out.println(i);
      }
}

Q. What will be the output of the following Java program, if we run as "java main_arguments 1 2 3"?
class main_arguments 
{
    public static void main(String [] args) 
    {
        String [][] argument = new String[2][2];
        int x;
        argument[0] = args;
        x = argument[0].length;
        for (int y = 0; y < x; y++) 
            System.out.print(" " + argument[0][y]);              
    }
}

Q. How to get difference between two dates?

Q. Which of these is necessary condition for automatic type conversion in Java?

Q. The keyword used to create a database is . . . . . . . .

Q. A view can be deleted using the command . . . . . . . .

Q. What is the default format for "Date" data type?

Q. Which of the following can be used interchangeably with MYSQL_VERSION_ID?

Q. Which variable is set to zero when automatic privilege granting is not needed?

Q. The storage engine for which the runtime options are always enabled is . . . . . . . .

Q. What sets up an association between one or more MyISAM tables and the named key cache?

Q. Each language binding defines its own interface for accessing MySQL.

Q. The datatype that stores the longest length of strings is . . . . . . . .

Q. Which statement can be used to specify the sql_mode system variable at runtime?

Q. Suppose you want to select a database named 'sampledb' as the default database. Which of the following commands do you use?

Q. Identify the table name in the following SQL statement.
INSERT INTO student VALUES('Kyle','M',NULL);

Q. A DEFAULT value cannot be supplied to TEXT types.

Q. How many of the following can be used in stored functions?
PREPARE, EXECUTE, DEALLOCATE PREPARE

Q. If emp_id contain the following set {9, 7, 6, 4, 3, 1, 2}, what will be the output on execution of the following MySQL command?
SELECT emp_id
FROM person
ORDER BY emp_id DESC;

Q. The option that executes all SQL statements in a SQL script irrespective of the number of errors is . . . . . . . .

Q. How many of these are for use with only MyISAM tables?
mysql, mysqladmin, mysqldump, mysqlisamchk

Q. What is the general term for information about databases and the objects in MySQL?

Q. What will be the order of sorting in the following MySQL statement?
SELECT emp_id, emp_name
FROM person
ORDER BY emp_id, emp_name;

Q. Which header should be included first?

Q. What will be the output of the following MySQL statement?
SELECT *
FROM employee
WHERE lname LIKE %bas% OR fname LIKE %bbs%;

Q. Which function returns reference to hash of row values?

Q. Which library file contains various portability macros and definitions?

Q. What is the meaning of "Equality Conditions"?

Q. The value of event_scheduler that enables checking status but not changing it at runtime is . . . . . . . .

Q. The statement that suspends the replication related activity of the slave server is . . . . . . . .

Q. The maximum value that can be specified to the size of VARCHAR is . . . . . . . .

Q. Symlink is an applicable relocation method for . . . . . . . .

Q. The clause that filters JOIN results is called . . . . . . . .

Q. The number of binary string types among the following is . . . . . . . .
BINARY, VARBINARY, BLOB, CHAR

Q. If emp_id contain the following set {9, 7, 6, 4, 3, 1, 2}, what will be the output on execution of the following MySQL command?
SELECT emp_id
FROM person
ORDER BY emp_id ASC;

Q. The CGI.pm module for website development is a part of . . . . . . . .

Q. The option which delays index flushing for slave server is . . . . . . . .

Q. Which is the stored program associated with a schedule?

Q. What is the Perl DBI?

Q. If the storage engine InnoDB is not used, foreign key cannot be used.

Q. What is known as the set of SQL statements that either executes successfully or none of them have an effect?

Q. How would a stored function named PI() written in the database 'sampdb' be called?

Q. For InnoDB tables in mysqldump an online backup that takes no locks on tables can be performed by which option?

Q. IP numbers can be represented as . . . . . . . .

Q. What is the embedded server library when building from source enabled by?

Q. The statement used to create a trigger is . . . . . . . .

Q. Which of these has higher priority?
writes, reads

Q. Input can be validated in MySQL programs.

Q. Multiple MySQL servers cannot be run on the same machine.

Q. Which statement can be used for modifying the definition for an existing table?

Q. A synonym for CHARACTER SET is . . . . . . . .

Q. The 'SOCKET' protocol is permitted on which operating systems?

Q. Comparing a known value with NULL results into . . . . . . . .

Q. Triggers are not supported for . . . . . . . .

Q. Which key declares that an index in one table is related to that in another?

Q. The number of tables among the following for which HIGH_PRIORITY have an effect are . . . . . . . .
MyISAM, MEMORY, MERGE

Q. What is the shebang line?

Q. Which table lists the accounts and the databases for which the privileges are provided?

Q. X'61626364' and X'61626364' are respectively . . . . . . . .

Q. Arrays cannot have associative indices in PHP.

Q. What is the primary purpose of Apache NiFi in the context of data integration?

Q. What does the term "Data Provenance" refer to in the context of NiFi?

Q. What is the primary purpose of NiFi's "ExecuteSQL" processor?

Q. In NiFi, what is the primary purpose of the "PutFTP" processor?

Q. In NiFi, what does the term "Distributed Cache" refer to?

Q. What is the significance of Hadoop's Access Control Lists (ACLs) in terms of security?

Q. What is the purpose of Hadoop's HDFS Encryption Zones in terms of data security?

Q. How does Hadoop support access control in HDFS?

Q. What is the significance of Hadoop's Knox Gateway in a secure Hadoop environment?

Q. Which of the following is a straightforward binary format?

Q. Point out the correct statement.

Q. Crunch was designed for developers who understand . . . . . . . . and want to use MapReduce effectively.

Q. Point out the wrong statement.

Q. Point out the correct statement.

Q. In HBase, what does the term "HBase MemStore Flush" refer to?

Q. In Oozie, what does the term "bundle application coordinator" mean?

Q. What is the primary role of the Oozie Coordinator Action?

Q. . . . . . . . . is a software development collaboration tool.

Q. HDT project works with eclipse version . . . . . . . . and above.

Q. By default, collector's listen on port . . . . . . . .

Q. Hive specific commands can be run from Beeline, when the Hive . . . . . . . . driver is used.

Q. What is the primary role of the Hadoop TextInputFormat?

Q. What is the purpose of the Hadoop AvroKeyOutputFormat?

Q. Which of the following supports splittable compression?

Q. The . . . . . . . . codec uses Google's Snappy compression library.

Q. . . . . . . . . tools is used to generate proxy objects in Java to easily work with the objects.

Q. What is the purpose of the Pig Latin AVG() function?

Q. Which of the following operator is used to view the map reduce execution plans?

Q. What is the significance of the Hadoop ResourceManager "Container Resizing" feature in a Hadoop cluster?

Q. . . . . . . . . mode is a Namenode state in which it does not accept changes to the name space.

Q. . . . . . . . . supports null values for all types.

Q. Zookeeper essentially mirrors the . . . . . . . . functionality exposed in the Linux kernel.

Q. Point out the correct statement.

Q. Microsoft uses a Sqoop-based connector to help transfer data from . . . . . . . . databases to Hadoop.

Q. The . . . . . . . . master will register its own address in this znode at startup, making this znode the source of truth for identifying which server is the Master.

Q. Tombstones exist for a configured time period defined by the . . . . . . . . value set on the table.

Q. Records are terminated by a . . . . . . . . character.

Q. In a MapReduce application, what does the term "InputFormat" represent?

Q. Map output larger than . . . . . . . . percent of the memory allocated to copying map outputs.

Q. The . . . . . . . . class provides the getValue() method to read the values from its instance.

Q. Which of the following is the default Partitioner for Mapreduce?

Q. Which programming language is commonly used for writing MapReduce programs?

Q. What is the purpose of Apache Ambari in the Hadoop ecosystem?

Q. . . . . . . . . hides the limitations of Java behind a powerful and concise Clojure API for Cascading.

Q. What is the primary function of the MapReduce "Sort" phase?

Q. The right number of reduces seems to be . . . . . . . .

Q. In Hadoop architecture, what does the term "shuffle and sort" refer to?

Q. What is the function of the Hadoop JobTracker in the architecture?

Q. What is the purpose of Hadoop ResourceManager in YARN?

Q. What does Hadoop MapReduce provide in terms of processing large datasets?

Q. Which Hadoop component is responsible for coordination and scheduling of tasks?

Q. In advanced MapReduce, what is the purpose of the Hadoop MapReduce "Map Output Compression"?

Q. Users can bundle their Yarn code in a . . . . . . . . file and execute it using jar command.

Q. Which of the following command runs ResourceManager admin client?

Q. . . . . . . . . gets the diagnostic messages for a given task attempt.

Q. The background color of a Web page is determined by the . . . . . . . . property.

Q. text box can handle string (text) and numeric data but not images or pictures

Q. The . . . . . . . . operator reverses the value of the condition.

Q. ASP is a . . . . . . . . language that tells the client's browser how to render the page on the computer screen.

Q. There are 3 type of modules following are not include in it.

Q. 'e' parameter's . . . . . . . . property is used to cancel the key if not accepted in the text area.

Q. Stretch property is used set. . . . . . . .of images .

Q. During runtime checkbox can be selected, if a checkbox is already selected or not by using the . . . . . . . . property.

Q. . . . . . . . . data is a data that the application is expecting the user to enter.

Q. To hide a section of code we click the . . . . . . . . box next to it.

Q. In VB, The . . . . . . . . function extracts a substring from the original phrase or string

Q. Which of the following section is used to make text appear around the image?

Q. VB allows programmers to without the declaring data type before start the program it is called . . . . . . . .

Q. The variable can be a declared by . . . . . . . .statement .

Q. A millisecond is . . . . . . . . of a second.

Q. Each memory location listed in the parameterList in the procedure header is referred to as . . . . . . . .

Q. The . . . . . . . . validator is used to verify that an entry is within the specified minimum and maximum values.

Q. To determine whether a variable is being passed to a procedure by value or by reference, you will need to examine . . . . . . . .

Q. And operator checks both the sub-conditions whereas AndAlso operator does . . . . . . . .

Q. You assign an access key by including an . . . . . . . . option in the control's caption or identifying label.

Q. In the following Visual Basic code, what will be in msg, if str contains "visual basic"?

Q. Where you enter the event procedure's code?

Q. Files that are read by computer are called as . . . . . . . .

Q. A . . . . . . . . variable is the instance of the String class.

Q. . . . . . . . . data type can store any type of data.

Q. The . . . . . . . . method creates a periodic payment on either a loan or an investment.

Q. The name of the class file ends with . . . . . . . .

Q. The timer state is determined by . . . . . . . .

Q. As per the syllabus we study version of VB is . . . . . . . .

Q. When an option box is selected, its value is set to "True" and when it is unselected; its value is set to "False".

Q. In Visual Basic, if you keep a variable undeclared, it is automatically taken as. . . . . . . . data type.

Q. You can eliminate the problems of implicit type conversion, with the help of . . . . . . . .

Q. A . . . . . . . . resembles a table.

Q. VB is tool that allows you to develop application in . . . . . . . .

Q. . . . . . . . . is used to separate related controls from other controls in the form.

Q. The . . . . . . . . instruction tells the computer to close the current form.

Q. What will be the output of the following Visual Basic code?

Q. The appropriate . . . . . . . . setting on a label depends on label's purpose.

Q. How do you select columns from a dplyr data frame where the column names start with the letter 'a'?

Q. Point out the wrong statement?

Q. When creating a Web document, what format is used to express an image's height and width?

Q. In order to connect to ISP's server you need .......

Q. Which of the following are interface?
1. ServletContext
2. Servlet
3. GenericServlet
4. HttpServlet

Q. Which interface in spring is responsible for Instantiating and managing the so called Spring beans?

Q. Which of these class is used to access actual bits or content information of a URL?

Q. Which of these class is necessary to implement datagrams?

Q. Which of the following methods finds the maximum number of connections that a specific driver can obtain?

Q. What is the purpose of the 'history' command in Linux?

Q. Which command is used to display the calendar in Linux?

Q. What does the 'mv' command do in Linux?

Q. Which command is used to create an empty file in Linux?

Q. Which command is used to display the current working directory in Linux?

Q. Which command is used to stop a process in Linux?

Q. Which command is used to find the location of a command in Linux?

Q. What is the default shell in most Linux distributions?

Q. Which command is used to compress files in Linux?

Q. Which file contains user account information in Linux?

Q. Which of the following statements about constructors in C++ is false?

Q. Which of the following is true about function templates in C++?

Q. What will be the output of the following code?

int a = 10, b = 3;
cout << a % b;

Q. What is the purpose of the 'friend' function in C++?

Q. Which of the following is the correct way to define a function with a deleted definition in C++?

Q. Which of the following is the correct way to define a function with a default argument in C++?

Q. Which of the following is not a valid C++ keyword?

Q. Which of the following is the correct way to define a default constructor in C++?

Q. Which of the following is the correct way to define a function with default arguments in C++?

Q. Which of the following is the correct way to define a const member function in C++?

Q. What is the output of the following code snippet? int x = 10; int y = 20; cout << (x < y);

Q. What is the output of the following code snippet? int x = 10; int y = 20; cout << (x == y);

Q. Which of the following is the correct way to define a structure in C++?

Q. Which of the following is the correct way to define a function pointer in C++?

Q. What is the output of the following code snippet? int x = 10; int y = 20; cout << (x != y);

Q. What is the output of the following code snippet? int x = 5; cout << x++;

Q. What is the purpose of the 'delete' keyword in C++?

Q. Which operator is used to allocate memory dynamically in C++?

Q. Which of the following is used to define a comment in Python?

Q. Which command is used to view the Docker container's resource usage statistics?

Q. Which command is used to remove all unused Docker networks?

Q. What is the purpose of the 'docker-compose pause' command?

Q. What does the 'docker exec -it container_name bash' command do?

Q. Which of the following is used to store Docker container data that persists between restarts?

Q. What is the default Docker network for containers?

Q. Which of the following is NOT a type of Docker network driver?

Q. Which command can be used to check the version of Docker installed?

Q. Which command is used to attach a running container to a network?

Q. Which command is used to remove all unused Docker images?

Q. Which command is used to rename a Docker container?

Q. Which command is used to push a Docker image to Docker Hub?

Q. What is the function of a Docker registry?

Q. Which of the following commands is used to build a Docker image from a Dockerfile?

Q. What does the 'docker-compose up' command do?

Q. What is the purpose of the 'ENTRYPOINT' instruction in a Dockerfile?

Q. How do you forcefully remove a running container?

Q. What is the purpose of the 'docker pull' command?

Q. What does the 'docker-compose.yml' file define?

Q. What is the 'docker-compose down' command used for?

Q. How can you limit the memory usage of a Docker container?

Q. What is a Docker container?

Q. Which of the following is a valid option for the 'docker run' command?

Q. Which command is used to view running containers in Docker?

Q. What is the purpose of a Dockerfile?

Q. What is the primary purpose of Docker?

Q. Which of the following is used to share a volume between services in Docker Compose?

Q. Which command is used to start services defined in a Docker Compose file?

Q. What is the purpose of the WORKDIR instruction in a Dockerfile?

Q. There is a unique function in C++ program by where all C++ programs start their execution

Q. In UML ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ is a collection of things tied together through relationships.

Q. The << operator is known as‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐.

Q. When a function is defined inside a class,it is treated as ‐‐‐‐‐‐‐

Q. The binding of data and functions together into a single class‐type is referred to as ‐‐‐‐‐‐‐‐

Q. Variables inside parenthesis of functions declarations have _____ level access.

Q. Arguments of a functions are separated with

Q. Identify the unary operator.

Q. A variable is/are

Q. A constructor that accepts __________ parameters is called the default constructor.

Q. Which of the following function / types of function cannot have default parameters?

Q. Which of the following statement is incorrect?

Q. Which of the following means "The use of an object of one class in definition of another class"?

Q. Which of the following can be overloaded?

Q. The function used to display one line at a time

Q. The function used to receive one line at a time

Q. The class that derived from standard library ios contain input functions

Q. A stream of byte that is the interface between IO and IO devices

Q. Conversion of data type is called

Q. The mechanism of deriving one base class with more than one derived classes

Q. Which of the following is not a type of inheritance?

Q. If a function can perform more than 1 type of tasks, where the function name remains same, which feature of OOP is used here?

Q. Which of the following command is used to mount NFS filesystems?

Q. You have written a shell script that must be run as root in order to work properly. What is the most secure way to give a normal user the ability to run this program?

Q. Which is the container that doesn't contain title bar and MenuBars. It can have other components like button, textfield etc?

Q. If not assigned a value, a variable of type char has the following default value:

Q. What is the output of the following program?
import string
import string
Line1 = "And Then There Were None"
Line2 = "Famous In Love"
Line3 = "Famous Were The Kol And Klaus"
Line4 = Line1 + Line2 + Line3
print(string.find(Line1, 'Were'), string.count((Line4), 'And'))

Q. Which of the following, in C++, is inherited in a derived class from base class?

Q. A member function can always access the data in __________, (in C++).

Q. Which of the following is true?

Q. Which container provides random access iterators?

Q. When an ADT is implemented as a C++ class, which of the following should normally be true?

Q. While overloading binary operators using member function, it requires ___ argument/s.

Q. If inner catch handler is not able to handle the exception then__________.

Q. Return type of uncaught_exception () is ________________.

Q. Which of the following are member dereferencing operators in CPP? 1. * 2. :: 3. ->* 4. ::* 5. ->

Q.                                          where a VM can be moved from one physical machine to another even as it continues to execute.

Q. RFID stands for?

Q.                  tags needs an external source to wake up the battery.

Q.                  tags contain battery and transmit signals autonomously

Q. Amazon Relational Database Service is a variant of the                5.1 database system.

Q. ability to detect and react to a set of environmental variables that is described as context (which can be sensor info or users' attitudes)

Q. websocket is a Protocol

Q. HTTP is a protocol

Q. [π=n/Ttotal=n⁄[kTo+Te(n,m)] The above equation calculates the value of which of the following?

Q. Cloud system from SGI is functionally considered as an _.

Q. You can’t count on a cloud provider maintaining your            in the face of government actions.

Q.                feature allows you to optimize your system and capture all possible transactions.

Q. Which of the following should be placed in second lowermost layer for the following figure?

Q. Which of the following is another name for the system virtual machine?

Q. ___________ is an application for collecting messages sent in RSS and Atom format from information providers.

Q. Point out the correct statement.

Q. Using which button can we add new style from Styles task pane?

Q. Under which option in Styles task pane can we customize style?

Q. We can apply styles in which tab?

Q. Under which section can we change the first line indent in Special field?

Q. Under which group in Home tab you can create first line indent?

Q. You can underline your document's text with _______

Q. What is the function of bold option?

Q. Bold, Italic and Underline commands are present in which group in Home tab?

Q. What does Justify option do?

Q. Which of the following is present in Alignment Option?

Q. How many alignment options are present in Paragraph group?

Q. Paragraph group is present under which tab?

Q. Which option in Case Menu allows us to shift the text case between two different case views?

Q. What does Capitalize Each Word Option do?

Q. What does Sentence Case Option do?

Q. Which of the following is NOT present in Case Menu?

Q. How many options are there in case menu?

Q. In Home tab, which group can help us to change the font color?

Q. In order to change the font to Bold, click ________ and in order to change the font to italic, click ________.

Q. Where is the Word Count shown in MS Word?

Q. Which of the following is automatically counted in MS Word?

Q. There is a ________ underline on the text of any grammar mistakes in the document.

Q. A _____ line will be drawn underlined if a spelling mistake is found in the document.

Q. There will be a ____ line underlined if any contextual errors are found in the document.

Q. The “Spelling” dialog box can be accessed by choosing “Spelling” from the ________.

Q. What setting do you need to change to print a spreadsheet with the header?

Q. Which one would you choose to create a bar chart?

Q. Which of the following is not an MS-Excel term?

Q. What is the best way to reference cell A10 on sheet 3 from sheet 1?

Q. In a formula, which symbol specifies the fixed columns or rows?

Q. What is the shortcut to select the whole column?

Q. Which function is used to calculate the loan’s amortization, rates of return and repayment amounts?

Q. The active cell

Q. In Excel, a data set is defined as?

Q. What tabs show up at the bottom of each workbook?

Q. What happens when the dollar sign ($) is entered in a cell address? (ex. $B$2:$B$10)

Q. The first cell of the EXCEL worksheet is labelled as

Q. We can save and protect the workbook by ________

Q. To record a sequence of keyboard strokes and mouse actions to be reproduced later, we use:

Q. What does the =NBVAL() function do?

Q. What function do you use to display the current date only in MS Excel?

Q. Which function do you use to display the current date and time in MS Excel?

Q. What chart can be created in Excel?

Q. How to sort the data in ascending or descending order?

Q. Microsoft Excel is a powerful __________

Q. Which function is not available in the “Consolidate” dialog box ?

Q. To return the remainder after dividing a number, we use the ________ function.

Q. To select an entire column in MS-EXCEL, you click on ________?

Q. In EXCEL, you can add up a wide range of data by simply selecting a button called ________?

Q. MS-EXCEL is based on

Q. An Excel workbook is a collection of ______

Q. Multiple calculations can be done in a single formula using _______

Q. Which field in Excel is used to enter values and formulas?

Q. Text concatenation can be done using _______

Q. A numeric value can be considered as a label value if it is preceded by _______

Q. Which elements of a worksheet can be protected against accidental changes?

Q. Which of the following is not a valid data type in Excel?

Q. Getting data from a cell in another sheet is called

Q. When should you use type-casting?

Q. Which of the following codes creates an array of 5 integers?

Q. Which of the following type-casting is accepted in C?

Q. Which of the following type-casting can be “wrapped”?

Q. Which of the following will be the type of ‘res’?

Q. Which type conversion is NOT accepted?

Q. What is the output of the code below considering the size of “short int” is 2, “char” is 1 and “int” is 4 bytes?

Q. The function tolower() defined in the C library works for ___?

Q. According to the following statements, what is the output of “p2”?

Q. With which value should a pointer be initialized?

Q. What is the output of the following C program?

Q. What is the output of the following C program?

Q. What does “short int” mean in C programming?

Q. What is the output of the following C program?

Q. What happens after a return?

Q. What is the output of the following C program?

Q. What is the size of int type?

Q. How many times do we get through the following loop?

Q. Which of the following is a user-defined data type?

Q. Which data type is most appropriate for storing the value 57000 in a 32-bit system?

Q. How many times do we get through the following loop?

Q. Array are stored in which memory space?

Q. The elements of an array is always stored in ________ memory?

Q. Can you make an array volatile?

Q. How to copy the contents of an array?

Q. How to sort an array?

Q. Generic type in java does not work with _______?

Q. What does this code display?

Q. What does this code display?

Q. Which of the following statements is incorrect?

Q. What is the type of variables “b” and “d” in the following code?

Q. What is the output of this program?

Q. What is the output of this program?

Q. What is the output of this program?

Q. What is the output of this program?

Q. Are the Enums “type-safe”?

Q. From which class do all Enums extend?

Q. Which method returns the elements of the Enum class?

Q. Can we create an instance of Enum outside of Enum itself?

Q. What is the order of the variables in Enum?

Q. If we add Enum constants to a TreeSet, what sort order will it use?

Q. What will be the output of the following code snippet?

Q. What is the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. What does the ‘toLocateString()’ method do in JS?

Q. The process in which an object or data structure is translated into a format suitable for transferral over a network, or storage is called?

Q. Which function is used to serialize an object into a JSON string in Javascript?

Q. The 3 basic object attributes in Javascript are

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. Which of the following are closures in Javascript?

Q. Which of the following is not a Javascript framework?

Q. What will be the output of the following code snippet?

Q. What keyword is used to declare an asynchronous function in Javascript?

Q. How to stop an interval timer in Javascript?

Q. What will be the output of the following code snippet?

Q. How are objects compared when they are checked with the strict equality operator?

Q. What does … operator do in JS?

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. What happens when we run this code?

Q. How do we write a comment in javascript?

Q. Which object in Javascript doesn’t have a prototype?

Q. What will be the output of the following code snippet?

Q. Which of the following are not server-side Javascript objects?

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. What does the Javascript “debugger” statement do?

Q. What will be the output of the following code snippet?

Q. When an operator’s value is NULL, the typeof returned by the unary operator is:

Q. What will be the output for the following code snippet?

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. What is the use of the <noscript> tag in Javascript?

Q. What will be the output of the following code snippet?

Q. When the switch statement matches the expression with the given labels, how is the comparison done?

Q. What will be the output of the following code snippet?

Q. What will be the output of the following code snippet?

Q. How can a datatype be declared to be a constant type?

Q. What keyword is used to check whether a given property is valid or not?

Q. Which type of database management system is MySQL?

Q. What is data in a MySQL database organized into?

Q. MySQL is freely available and is open source

Q. What represents an ‘attribute’ in a relational database?

Q. What represents a ‘tuple’ in a relational database?

Q. How is communication established with MySQL?

Q. What does ‘name’ represent in the following code snippet?

Q. Which is the MySQL instance responsible for data processing?

Q. The MySQL server used in its client/server architecture is _______________.

Q. In MySQL databases, the structure representing the organizational views of the entire databases is ____________.

Q. Which of the following characters is illegal in naming an unquoted identifier in SQL?

Q. In MySQL, identifier names can start with a digit.

Q. How are identifiers quoted in MySQL?

Q. Which of the following is an illegal unquoted identifier name?

Q. Which server mode value enables use of double quotes to wrap identifier names?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?