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You will find all Programming Portal MCQs whose solution is updated by Vinay
Q. Which keyword is used to handle exceptions in Java?
Q. Which of these keywords are used for the block to handle the exceptions generated by try block?
Q. Which of these clause will be executed even if no exceptions are found?
Q. Which of the following keywords is used for throwing exception manually?
Q. Which of these data type is returned by every method of OutputStream?
Q. Which of these class produce objects with respect to geographical locations?
Q. Which of these method of Locale class can be used to obtain country of operation?
Q. Which class is used to generate random number?
Q. Which of the following class definitions defines a legal abstract class?
Q. Which of these is a mechanism for naming and visibility control of a class and its content?
Q. Which of these methods returns the total number of bytes of memory available to the program?
Q. Which of this package is used for invoking a method remotely?
Q. Which method is used to generate boolean random values in java?
Q. What is the use of Observable class?
Q. What is an interface in Java?
Q. What is the purpose of the "this" keyword in Java constructors and methods?
Q. What is method signature in Java?
Q. Which keyword is used to declare a method that cannot be overridden in Java?
Q. What is not the use of "this" keyword in Java?
Q. What is false about constructor?
Q. What is the result of the expression 5 ^ 3 in Java?
Q. What is the output of the following program?
Q. Which of these statements are incorrect?
Q. What will be the output of the following Java program?
Q. What will be the output of the following Java code?
Q. What will be the output of the following Java code?
Q. What is the purpose of the trim() method of a String object in Java?
Q. Which of the following is a valid declaration and initialization of a String array in Java?
Q. Which of the following statements is true about ArrayLists in Java?
Q. In Java, which access modifier allows a class member to be accessed from anywhere in the code?
Q. What is the default access modifier for a class in Java if no access modifier is specified?
Q. What keyword is used to declare a constant in Java, which is implicitly final and static?
Q. Which data type is used to store a single character in Java?
Q. What is Truncation in Java?
Q. 'character_set_database' represents the character set used by the default database.
Q. Which MySQL statement is used to find out which character sets are available?
Q. By default, the AUTO_INCREMENT sequences begin at . . . . . . . .
Q. A FULLTEXT index cannot be created for multiple columns.
Q. Which authentications are required for login into Mysql command line tool?
Q. Which clause is used to "sort the rows of the final result set by one or more columns"?
Q. The maximum non zero values for DOUBLE is . . . . . . . .
Q. Which command is used to create "Temporary tables" in MySQL?
Q. In which mode is the indicator of the presence/absence of a word in search used?
Q. What are PHP variables preceded by?
Q. The max_binlog_cache_size system variable has default size . . . . . . . .
Q. Which of the following commands sets the SQL mode as TRADITIONAL?
Q. For which type are illegal values converted to the appropriate 'zero' value?
Q. Which mode is a shorthand for 'both strict modes plus a bunch of other restrictions'?
Q. Which data type is more suitable for storing "documents" in Mysql?
Q. Issuing 'SELECT' on a MERGE table is like . . . . . . . .
Q. Which of the following is the correct order of precedence (high to low)?
Q. What allows nesting one select statement into another?
Q. The basic operation of PHP is to interpret a script.
Q. The static C library client in Windows is . . . . . . . .
Q. What is true about the following SQL statement? SELECT * FROM table_1;
Q. Which of the following statements is/are correct?
Q. Which clause is used to "Filters out unwanted data"?
Q. What does comparing a known value with NULL result into?
Q. The minimum value stored by signed TINYINT is . . . . . . . .
Q. Which statement is used to produce a stored function?
Q. What is the return value from operations returning a row count?
Q. What is exec_stmt_ssl written in?
Q. What enables the read and execute access to all users outside of mysql group.
Q. Which variable returns code from operations that return true or false?
Q. Which datatype is best suited to store currency values?
Q. Which subquery cannot be executed by itself as a separate statement?
Q. The statement used to find out which character sets are available is . . . . . . . .
Q. What is used to perform an analysis of key values by the server?
Q. Which keyword used with UNION retains duplicate rows?
Q. Slow shutdown can be performed by setting innodb_fast_shutdown to . . . . . . . .
Q. There cannot be more than one column per table with the AUTO_INCREMENT attribute.
Q. Which function returns a reference to hash of row values?
Q. The maximum collations a character set can have is . . . . . . . .
Q. "CREATE VIEW ..." command is used to create which type of table in Mysql?
Q. The function returning reference to array of row values is . . . . . . . .
Q. Which is the library file that contains various portability macros and definitions?
Q. What is the name of the format file for a table named my_tbl?
Q. The "Mysql command line tool" format the results in which of the following format?
Q. The option that supplies the pathname to root directory of MySQL installation is . . . . . . . .
Q. Which system variable controls the size of the table cache?
Q. Which privileges are required on the source server to use mysqldbcopy?
Q. Block arrows, stars and banners, and callouts are all examples of
Q. Which of the following methods CANNOT be used to delete records from a table?
Q. In NiFi, what is the purpose of the "connection" between processors?
Q. What is the significance of NiFi's "DetectChange" processor?
Q. What is the significance of NiFi's "TailFile" processor in a data flow?
Q. In Apache NiFi, what is the role of the "InvokeScriptedProcessor" processor?
Q. How can Hadoop's audit logging be useful in a security context?
Q. What is the role of Hadoop's Authentication Proxy in a secure Hadoop environment?
Q. . . . . . . . . Collection API allows for even distribution of custom replica properties.
Q. . . . . . . . . is used when you want the sink to be the input source for another operation.
Q. Point out the wrong statement.
Q. . . . . . . . . provides Java-based indexing and search technology.
Q. With HCatalog . . . . . . . . does not need to modify the table structure.
Q. Point out the wrong statement.
Q. . . . . . . . . is a subproject with the aim of collecting and distributing free materials.
Q. . . . . . . . . is used as a remote procedure call (RPC) framework for facebook.
Q. PostingsFormat now uses a . . . . . . . . API when writing postings, just like doc values.
Q. In HBase, what is the purpose of the Put operation?
Q. In HBase, what is the function of the HBase Block Encoding?
Q. In HBase, what is the significance of the HBase Block Cache?
Q. In HBase, what is the significance of the HBase Write Pipeline?
Q. . . . . . . . . facilitates installation of Hadoop across any number of hosts.
Q. Point out the wrong statement.
Q. Point out the wrong statement.
Q. Point out the correct statement.
Q. Correct and valid syntax for count command is . . . . . . . .
Q. What is the primary role of the Hadoop OutputCommitter?
Q. Avro messages are framed as a list of . . . . . . . .
Q. Point out the correct statement.
Q. What is the purpose of the FILTER statement in Apache Pig?
Q. What is the purpose of the ORDER BY statement in Apache Pig?
Q. In comparison to SQL, Pig uses . . . . . . . .
Q. Point out the correct statement.
Q. . . . . . . . . command is used to copy file or directories recursively.
Q. Which of the following is used for the MapReduce job Tracker node?
Q. You need to have . . . . . . . . installed before running ZooKeeper.
Q. . . . . . . . . provides a Couchbase Server-Hadoop connector by means of Sqoop.
Q. You configure sample frequency by changing the . . . . . . . . property in the table definition.
Q. Point out the correct statement.
Q. Point out the correct statement.
Q. Which of the following argument is not supported by import-all-tables tool?
Q. Point out the wrong statement.
Q. Point out the wrong statement.
Q. What does the MapReduce "Map" function do?
Q. Point out the correct statement.
Q. In the context of Hadoop, what does the term "shuffle" refer to?
Q. What is the purpose of the Hadoop Secondary NameNode?
Q. Which component of Hadoop is responsible for managing configurations and synchronization?
Q. In advanced MapReduce, what is the purpose of the Hadoop MapReduce "Side Data Distribution"?
Q. Use . . . . . . . . for the optional label entered in the groupbox's text property.
Q. When a control has focus it can accept . . . . . . . .
Q. The text contained in the identifying label is entered using . . . . . . . .
Q. Variables declared using a structure is known as . . . . . . . .
Q. Following are the logical operator
Q. "dblMy Age" what is the problem with this variable name?
Q. What is the purpose of the label control?
Q. Each button has same height and width because they are . . . . . . . . the interface.
Q. Which option is used to close the IDE?
Q. Which statement is used to create a user-defined data type?
Q. Which of the following declares a two-dimensional array that has three rows and four columns?
Q. Vb allows programmers to define a data type before start the program it is called . . . . . . . .
Q. An object's . . . . . . . . include methods and events.
Q. In Visual Basic, you use . . . . . . . . to write a stream of characters.
Q. The . . . . . . . .is show under or below the Project Explorer window
Q. Variables declared in a block have . . . . . . . . scope.
Q. Which button is used to display the names in the property list by category?
Q. Following are the not condition operator .
Q. What is wrong with the following statement?
Q. The . . . . . . . . is one of the most important controls as it is used to execute commands.
Q. Progress bar is always work with . . . . . . . .control.
Q. What will be in text, if Intid contains 3?
Q. . . . . . . . . is used to take decision .
Q. Each menu item should have an . . . . . . . . that is unique within its menu.
Q. In visual basic language what are the rules of a programming language called?
Q. . . . . . . . . function is used to format numbers.
Q. An . . . . . . . . function will display a message box where the user can enter a value.
Q. Hungarian notations name are entered using . . . . . . . .
Q. The default property for a command control is:
Q. The class statement groups . . . . . . . . item in one unit.
Q. .................... is a web's native protocol.
Q. Component which additionally provides a pop-up date picker control for its enclosed input field.
Q. Which tag is used to execute java source code in JSP?
Q. Which of these method is called when http daemon is acting like a normal web server?
Q. Which command is used to clear the terminal screen?
Q. Which command is used to show the amount of available memory in Linux?
Q. Which command is used to list all open files and the corresponding processes in Linux?
Q. Which command is used to monitor the disk I/O in Linux?
Q. Which command is used to display a list of all installed packages in Linux?
Q. Which command is used to search for a specific pattern in a file?
Q. Which command is used to list the contents of a directory in Linux?
Q. Which function is used to allocate memory dynamically in C++?
Q. Which of the following is used to prevent multiple inclusions of a header file?
Q. Which of the following statements is true about C++ classes?
Q. Which of the following is true about C++ structures?
Q. Which of the following is the correct way to define a function with a constexpr specifier in C++?
Q. What is the output of the following code snippet? int x = 10; int y = 20; cout << (x >= y ? x : y);
Q. What is the output of the following code in C++? int a = 10; int b = 3; cout << a % b;
Q. Which of the following is used to handle dynamic memory allocation in C++?
Q. Which of the following is the correct way to define a function with a pointer parameter 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 destructor in a derived class 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 lambda function in C++?
Q. Which of the following is the correct way to define a namespace in C++?
Q. What is the output of the following code snippet? int x = 10; int *ptr = &x; cout << ptr;
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 syntax for a while loop in Python?
Q. Which Python keyword is used to create a class?
Q. Which of the following Docker commands is used to scale a service in Docker Swarm?
Q. Which command can be used to check the status of Docker services in a Swarm mode?
Q. Which of the following is true about Docker Swarm?
Q. Which command is used to check the logs of a running Docker container?
Q. What does the 'docker exec' command do?
Q. What is a 'Docker network'?
Q. What is the purpose of the 'docker-compose pause' command?
Q. What is the purpose of the 'docker-compose exec' command?
Q. What is the purpose of the 'docker-compose pull' command?
Q. What is the purpose of the 'docker save' command?
Q. What is the default location for Docker configuration files on Linux?
Q. Which of the following is the default network driver in Docker?
Q. Which of the following commands is used to stop a running container?
Q. What is the purpose of the '--name' flag in 'docker run'?
Q. Which of the following is a valid Docker command to list running containers?
Q. Which command can be used to get detailed information about a Docker container?
Q. How can you set a specific Docker Compose service to always restart on failure?
Q. What is the purpose of 'volumes' in a Docker Compose file?
Q. Which command is used to remove unused Docker Compose volumes?
Q. Which flag is used with 'docker-compose up' to rebuild images?
Q. How do you define environment variables in a Docker Compose file?
Q. Which command is used to pause a running Docker container?
Q. Which command lists all running Docker containers?
Q. Which Docker command is used to download an image from Docker Hub?
Q. Which command is used to list all running Docker containers?
Q. Which of the following is a correct comment?
Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ model is also known as linear sequential model.
Q. In C++ default return type for all the functions is ‐‐‐‐‐‐‐‐‐.
Q. ‐‐‐‐‐ is a function that is expanded in line when it is invoked.
Q. Strings are character arrays. The last index of it contains the null‐terminated character
Q. In case of arguments passed by values when calling a function such as z=addidion(x,y),
Q. Which of the following cannot be declared as virtual?
Q. Which of the following statement is correct?
Q. Which of the following is not a type of constructor?
Q. The function contain in the ios class to set flags
Q. Treating the address of the object of the derived class as the address of the base class means
Q. A friend function for unary operator overloading takes ‐‐‐‐ ‐arguments.
Q. The mechanism of deriving a new class from another class
Q. Which allows you to create a derived class that inherits properties from more than one base class?
Q. Which of the following statement is correct whenever an object goes out of scope?
Q. A class's __________ is called when an object is destroyed.
Q. Out of the following, which is not a member of the
Q. Which of the following is true?
Q. Which among the following can restrict class members to get inherited?
Q. Which of the following subdirectory(ies) contains the system configuration scripts.
Q. Which of the following runs the last command you entered?
Q. To display information about the processor itself - display the contents of which file?
Q. How would you sort a file called shopping on column 3?
Q. What command is used to copy a file?
Q. The command chmod 761 letter is equivalent to
Q. Which of the following command can be used to rename a file in LINUX?
Q. What command allows you to logout of the system?
Q. Which statement is true about a static nested class?
Q. What is the preferred way to handle an object's events in Java 2?
Q. The term _____________ refers to a class's direct ancestor or to any of its ascendant.~~~classes.
Q. How can we restrict dynamic allocation of objects of a class using new?
Q. What is the difference between struct and class in C++?
Q. Which is the pointer which denotes the object calling the member function?
Q. Which among the following is/are type(s) of this pointer?
Q. Variable that are listed in function's calls are called
Q. Which operation is used as Logical 'AND'
Q. Which of the followings is/are pointer-to-member declarator?
Q. When a language has the capability to produce new data type mean, it can be called as …...
Q. has many of the characteristics of what is now being called cloud computing
Q. In a scheme, the VM is installed as a Type 1 Hypervisor directly onto the hardware.
Q. Cloud system from SGI is functionally considered as an .
Q. The capability of a system to adapt the increased service load is called
Q. Applications that work with cloud computing that have low margins and usually low risk are
Q. Which of the following is incorrect?
Q. The usual BUS structure used to connect the I/O devices is
Q. Tomcat doesn’t support JAX-WS by itself.
Q. Point out the wrong statement.
Q. Which among the following are the duties of the NameNodes
Q. tags needs an external source to wake up the battery.
Q. Amazon Relational Database Service is a variant of the 5.1 database system.
Q. REST service end point comprises an address.
Q. Communication between services is done widely using protocol.
Q. Dynamic content presented in Google crawling isn’t normally indexed.
Q. Applications can use the to report progress and set application-level status messages.
Q. What was Hadoop written in?
Q. AWS reaches customers in ______________countries.
Q. Amazon EMR uses Hadoop processing combined with several __________ products.