Computer Aptitude

This is correct because DDL, in oracle, is known as Data Definition Language and it is also used in Oracle to create and remove database objects. It is a SQL plus command and it has an online commands interpreter. The main example of Data Definition Language (DDL) are - CREATE, ALTER, DROP. 

RDBMS means Relational Detabase Management System which provides the user facility to store and retrieve data in a manner consistent with defined model. RDBMS provides the user facility to store and retrieve data in a manner consistent with a defined model. The relational model has three models (1) Structural model to build the model (2) Integrity component and (3). Manipulation component. 

This method allocates the smallest hole that is big enough to hold the process in memory. Hence, manages memory space efficiently.

Right answer because DML is one category in SQL Commands which is known as Data Manipulation Language. DML (Data Manipulation Language) is used to manipulate the data in the database. For example-: INSERT, DELETE, UPDATE, SELECT etc.

Multiple inheritance is a form of inheritance in which there are one or more base classes which can be inherited onto the derived classes.

Right answer because the full name of DCL is  Data Control Language and  there are three SQL Commands in Oracle. These are; DDL(Data Definition Language) , DML (Data Manipulation Language) and DCL (Data Control Language).   

ALU refers to Arithmetic and Logic unit, is one of the important units of CPU, which performs processing of all arithmetic and logical operations inside the computer.

In this part, we can specify default arguments for which values can be specified or not at the time of calling the function.

In this method, the original copy of the variable is used by the function. Hence, any changes made to the variables are reflected in the main program.

Third generation of computers were built using integrated circuits, which combined various transistors into a single circuit reducing the size of the computer drastically.

ABACUS was the tool created by the Chinese to count and calculate numbers.

Magnetic Ink Character Reader (MICR) is a device that identifies a character that is written with ink containing particles of magnetic material. This device is mainly used to read bank cheques.

This is the property of C++, which enables functions having same name to be accessed multiple times by passing different number and type of arguments to the function.

In this mode of inheritance, public members of base class cannot be inherited as it becomes private to the derived class.

This is the right answer because SQL commands fall into three categories like DDL (Data Definition Language), DML (Date Manipulation Language) and DCL (Data Control Language). All these categories are a part of the SQL commands and SQL commands are also terminated by a semicolon (;) in Oracle. So, this is the right answer.