IMPORTANT QUESTIONS WITH ANSWERS FOR II PU FINAL EXAMINATION

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1 IMPORTANT QUESTIONS WITH ANSWERS FOR II PU FINAL EXAMINATION Chapter 1: Configuring a computer system ONE mark questions 1. What is a motherboard? Ans.: A Printed Circuit Board (PCB) used to connect all the system components like CPU, RAM, expansion cards, graphic cards etc., is called motherboard. 2. What is a port? Ans.: A place to connect the peripheral devices to computer system. 3. Expand PCI. Ans.: Peripheral Component Interconnect 4. How many bits of data are sent in a serial port? Ans.: One bit at one time. 5. Expand USB. Ans.: Universal Serial Bus 6. What is meant by plug & play device? Ans.: A device can be easily connected or disconnected without restarting your computer. 7. Expand SDRAM. Ans.: Synchronized Dynamic Random Access Memory 8. Give the expansion of DDRRAM. Ans.: Double Data Rate Random Access Memory THREE marks questions 1. Explain the different components of motherboard. Ans.: A CPU / Processor socket The smaller IC s are combined and form the CPU. It is connected to a motherboard through this socket. BIOS (Basic Input Output System ) - A Read-only memory (ROM) chip, which contains the firmware, or startup instructions for the computer system. As computer is switched on, BIOS performs the POST (Power On Self Testing).

2 Memory slot It is also called as RAM slot. It is used to connect the RAM chips to the mother board. In modern motherboards we find DIMM (Dual Inline Memory Module) memory slots. 2. Explain the characteristics of motherboard. Ans.: The form factor is the specification of a motherboard the dimensions, power supply type, location of mounting holes, number of ports on the back panel, etc. A chipset is a collection of microchips (such as CPU, BIOS, memory, mass storage, interfaces, controllers and input-output devices) designed with built-in circuits on motherboard to work together to perform specific functions. Processor socket It is a place where CPU is connected. It is designed as per the compatibility of the CPU and the motherboard. 3. Explain different types of I/O ports. Ans.: These ports are also called as communication ports. The I/O ports connects the external devices. The different I/O ports are described below: Serial port - It transmits the data bit by bit and it supports bi-directional data flow. It is also called COM port. Parallel port It transmits the data byte by byte and it supports unidirectional data flow. It is also called LPT port. USB port It is an advanced input/output port. It is a plug and play port. That means a devices that work with a computer system as soon as they are connected. The user does not have to manually install drivers for the device or even tell the computer that a new device has been added. Many devices can interact with the system simultaneously through this. 4. Give the features of USB port. Ans.: i) Plug an play port ii) Up to 127 devices can connect to the host, either directly or by way of USB hubs. iii) It can also be used for power transmission. 5. Explain cache memory. Ans.: Cache memory is a very high speed semiconductor memory which can speed up CPU. It acts as a buffer between the CPU and main memory. It is used to hold those parts of data and program which are most frequently used by CPU. There are different levels of cache memory. Level1 ( L1 ) cache is present inside the CPU and Level2 ( L2 ) cache is situated at the mother board of your computer. 6. Explain the types of power supply.

3 Ans.: Power supply is most important for the working of a computer. There are two types of power supply. Switched Mode Power Supply (SMPS) - A device used as part of an electronic device, which transforms electrical current from an AC line circuit to DC for use in electronic devices. An Uninterruptible Power Supply (UPS) - It is a device that allows your computer to keep running for at least a short time when the primary power source is lost. An UPS contains a battery and it switch on to battery power when the device senses a loss of power from the primary source. Chapter 2: Boolean Algebra TWO marks questions 1. Prove algebraically that X +XY = X+Y Ans.: (X+XY) + X Y (X+XY = X) X(1+Y)+XY+X Y X+XY+XY+X Y X+XY+X Y X+Y(X+X ) X+Y 2. Use duality theorem to derive another Boolean relation from: A + A B = A+B Ans.: A + A B = A+B Dual expression is A. A + B = A.B FIVE marks questions 1. State and prove De Morgan s theorems algebraically. 2. Given the Boolean function F(x, y, z)= (0, 2, 4, 5, 6). Reduce it using Karnaugh map method. 3. Given Boolean function F(A,B,C,D) = (5,6,7,8,9,10,14). Use Karnaugh s map to reduce the function F using SOP form. Write a logic gate diagram for the reduced SOP expression. Chapter 3: Logic Gates ONE mark questions 1. What is logic gate?

4 Ans.: A logic gate is an electronic device that accepts one or more inputs and generates an output signal based on the different combinations of input signals. 2. Which basic gate is known as inverter? Ans.: NOT gate is known as inverter 3. What is meant by universal gate? Ans.: A gate which is used to design all types of logic circuits is called universal gate. 4. Mention different universal gates. Ans.: NAND and NOR 5. Write the logic, truth table and logic symbol for the following a) Basic gates AND, OR, NOT b) Derived gates NAND, NOR, XOR, XNOR. Chapter 4: Data Structure ONE mark questions: 1. Mention any 2 examples for non- primitive data structures Ans.: Trees and graphs 2. What are primitive data structures? Ans.: The pre-defined data structures are called primitive data structures. 3. What are non-primitive data structures? Ans.: These are not defined in the language. These are derived from primitive data structures. 4. Name the data structures which is called LIFO list. Ans.: Stack 5. What is the other name of queue? Ans.: First In First Out (FIFO) list 6. What is meant by linear data structures? Ans.: Type of data structures stores the data elements sequentially one after the other. The elements stored in linear data structure have the adjacency relationship. 7. What are non- linear data structures? Ans.: The non-linear data structure stores the elements in non-sequential order. 8. What is a stack?

5 Ans.: A stack is a linear data structure. The PUSH and POP operations are used to insert and delete the elements respectively. 9. What is a queue? Ans.: A linear data structure where insertion of data elements takes place at REAR end and deletion of data elements takes place at FRONT end. 10. What is a linked list? Ans.: It is a linear data structure contains one or more nodes. A node is a memory chunk has two parts DATA field and LINK field. 11. Mention any one application of stack. Ans.: Stacks are used for polish notation (conversion of infix to postfix and prefix expression). 12. What do you mean by traversal in data structures? Ans.: The visiting of each data element exactly once is called traversal. 13. Mention the types of searching in the array. Ans.: Linear search and binary search 14. What do you mean by depth of a tree? Ans.: The depth of a node is the number of edges from the node to the tree's root node. 15. How do you find the degree of a tree? Ans.: Maximum number of children for a particular parent node in a tree. 16. What the operations that can be performed on queues? Ans.: Enqueue and dequeue 17. Define the term PUSH and POP operation in stack. Ans.: Inserting the data element into a stack is called PUSH operation. Similarly deleting the data element from the stack is called POP operation. 18. What is FIFO list? Ans.: The queue is also called FIFO list. The FIFO means accessing data elements takes place in first in first out order. 19. What is LIFO list? Ans.: A stack is a LIFO list. In LIFO recently added element can be accessed first.

6 20. Mention the different types of queues. Ans.: Simple queue, circular queue, priority queue and DEqueue. THREE marks questions 1. Mention the various operations performed on data structures. Ans.: Traversing An element must be visited before performing any of the operations. Traversing means visiting each element exactly once. Insertion Adding new element into an array at the specified position is called insertion. Deletion Taking out an element from the specified position in the given array. Searching Locating or finding the position of an element from the array is called searching. Types of searching techniques are linear searching and binary searching. 2. Explain the memory representation of a stack using 1-dimensional array. Ans.: A block of memory is allocated contiguously to store the stack elements. The stack elements are inserted from the starting address of the allocated memory which is pointed by the TOP pointer. A TOP pointer is pointing to the top most element in the stack. If stack is empty, TOP is pointing to NULL(-1). A[3] A[2] A[1] A[0] A[-1] TOP Fig.: Memory representation of stack 3. Define the following with respect to binary tree: Ans.: a. Root It is a starting node of a tree. Thus all operations starts from root node. b. Sub-tree Part of a tree is called sub-tree. A sub tree is formed when an edge of a tree is disconnected. c. Depth - The depth of a node is the number of edges from the node to the tree's root node. d. Degree Maximum number of children for a node in a tree. 4. Write an algorithm for traversal in a linear array. Ans.: Algorithm: Traversing(A, BEGIN, END, SIZE) 1. INPUT N 2. FOR I = 0 TO N-1 DO 3. READ A[I] [End of Step 2 FOR loop] 4. FOR I = 0 TO N-1 DO PRINT A[I] [Apply process]

7 [End of Step 4 FOR loop] 5. END FIVE marks questions 1. Write an algorithm to insert an element in an array. 2. Write an algorithm to delete an element in an array. 3. Write an algorithm to search an element in an array using binary search. 4. Write an algorithm to sort an array using insertion sort. 5. Write an algorithm for push & pop operation in stack using array. 6. Write an algorithm to insert a data element at the rear end of the queue. 7. Apply binary search for the following sequence of numbers. 10, 20, 30, 35, 40, 45, 50, 55, 60 search for item = 35 Chapter 7: Classes and Objects ONE mark questions 1. What is a class? Ans.: A class is the blueprint from which individual objects are created. 2. What is an object? Ans.: An object is a basic real world element with attributes and behaviours 3. What are data members? Ans.: Data members are the variables which can hold the data, depending on access control specifier different functions can use them. 4. What is a member function? Ans.: In OOPs, member functions are called methods. The methods are invoked to perform a particular task such as to get the input, calculation or output the results. 5. Mention the access specifiers used with a class. Ans.: There are three types of access specifiers private, public and protected. 6. Is it possible to access data outside a class? Ans.: Yes

8 7. Which type of data members are accessible outside a class? Ans.: Public data members are accessible outside a class. 8. Mention the operator used to access members of a class. Ans.: Dot (.) operator is used to access the data members of a class 9. What is the significance of scope resolution operator (:: )? Ans.: Scope resolution operator(::) is used to define a function outside a class. But is also used when we want to use a global variable. FIVE marks questions 1. Explain class definition and class declaration with syntax and example. 2. Describe access specifiers in a class. 3. Explain member functions a. Inside class definition. b. Outside a class definition. 4. Explain how objects of a class can be declared? Chapter 8: Function Overloading FIVE marks questions 1. Explain the need for function overloading. 2. Discuss overloaded functions with syntax and example. 3. Explain inline functions with syntax and example. 4. Explain friend functions and their characteristics. Chapter 9: Constructors and Destructors TWO marks questions 1. What is a constructor? Give an example. Ans.: A constructor is a special member function has the same name as that of class and executed whenever a new object is created. Example: Following example illustrate the constructor of a class. class student { private: int regno; float avg_marks; public:

9 }; student(); { regno = 0; marks = 0.0; } //constructor 2. Write the syntax and example for default constructor. Ans.: Syntax: class class_name { data_members; public: constructor_name( ) // class name itself is the constructor name { Statements; or expressions; } }; Example: class test { int a; public: test( ); }; Ans.: 3. Mention the features of parameterized constructors. Parameterized constructors can be overloaded. These also can have default values If an object is created with one object, a constructor invokes with one argument only. 4. Which are the different methods through which constructors are invoked? Ans.: A parameterized constructor can be called in following ways. i) Implicitly ii) Explicitly iii) Using assignment (=) sign. 5. Write a syntax and example for copy constructor. Ans.: Syntax: classname (classname & obj) {

10 Statements; } Example: class testcopy { public: void getval(); testcopy( int num ); // simple constructor testcopy( testcopy & obj); // copy constructor } FIVE marks questions 1. Write the rules for writing a constructor function. 2. Explain default constructor with syntax and example. 3. Explain parameterized constructor with syntax and example. 4. Explain the features of copy constructor. 5. Explain destructor with syntax and example. Chapter 10: Inheritance FIVE marks questions 1. What are the types of inheritance? Explain any What is virtual base class? Give example. 3. Explain single inheritance with a suitable C++ program. 4. What is visibility mode? What is its role? Chapter 11: Pointers ONE mark questions 1. What do you mean by pointer? Ans.: A pointer is a variable holds an address of another variable. 2. Which is an address operator? Ans.: & is an address operator 3. Which is a pointer operator? Ans.:* is a pointer operator 4. How to declare pointer? Ans.: A pointer can be declared using following syntax: data_type *variable_name; 5. How to initialize pointer? Ans.: A pointer can be initialized with an address (&) operator.

11 int a, *aptr; aptr = &a; 6. What is free store? Ans.: The collection of unused memory locations and adding to the heap is called free store. THREE marks questions 1. What are the advantages of pointers? Ans.: o A function cannot return more than one value. But when the same function can modify many pointer variables. Because changes occurs at their memory addresses. o Efficient memory utilization. o Communication between different parts of code in a program is efficient through pointers. Ans.: 2. How dynamic memory allocation is different from static memory allocation. A static array has memory allocated at compile time. A dynamic array has memory allocated at run time. The lifetime of a variable in static memory is the lifetime of the program. You can control the exact size and the lifetime of these memory locations. 3. What is array of pointers? Give examples. Ans.: Like other data types pointers also defined in groups. i.e. array of pointers. Declaration of array of pointers: Syntax: data_type *array_name[size]; Example: int *array_pointer[5]; It creates 5 pointer variables to store the addresses of 5 integers. Chapter 12: Data File Handling TWO marks questions 1. What are input and output streams? Ans.: A sequence of bytes moves from input device to a program is called input stream. A sequence of bytes moves from program to a display screen is called output stream. 2. Write the member functions belonging to fstream class. Ans.: open() and close() are belong to fstream class. An fstream class inherits functions from istream, ostream and iostream. 3. Differentiate between ifstream class and ofstream class.

12 Ans.: ifstream class supports input operations. Related functions are get, getline etc., ofstream class supports output operations. Related functions are put, write etc., 4. Differentiate between read () and write (). Ans.: read() is used to read the binary file Syntax: ifstream_object.read((char *)&variable, sizeof(variable)); write() is used to write the data into binary file. Syntax: ofstream_object.write((char *)&variable, sizeof(variable)); 5. Differentiate between get () and getline (). Ans.: get() is used to read the individual character at one time. getline() reads an entire line at one time. 6. Write the member functions belonging to ofstream class. Ans.: put(), write(), seekp() and tellp() 7. Write the member functions belonging to ifstream class. Ans.: get(), getline(), read(), seek() and tellg() 8. Mention the methods of opening file within C++ program. Ans.: There are two methods for opening a file. i) Using constructor function of the stream class ii) Using the function open( ) THREE marks questions 1. Name the stream classes supported by C++ for file input and output. Ans.: C++ provides the following classes to perform output and input of characters to/from files: ofstream This stream class helps to write data in to a file ifstream - This stream class helps to read data from a file fstream - This stream class helps to both read and write from/to file Each of the open member functions of classes ofstream, ifstream and fstream has a default mode that is used if the file is opened without a second argument:

13 Class ofstream Ifstream Fstream default mode parameter ios::out ios::in ios::in ios::out 2. Mention the types of file. Explain any one. Ans.: There are two types of data files - text file and binary file. Text file It stores the information in ASCII characters. Each line of text is terminated with a special character known as EOL (End Of Line) character. Some internal translation takes place when this eol character is read or written. A text file is ended with EOF (Endo Of File) character. 3. What are the advantages of saving data in binary form and text form. Ans.: Advantages of binary file: i) Data processing takes place faster ii) Data is represented in binary form as main memory of the system stores. iii) No need of translation. Advantages of text file: i) Better readability of contents ii) It has EOL ( End Of Line) and EOF(End Of File) characters as delimiters. Thus certain internal translation takeplace. Chapter 13: Database Concepts One mark questions 1. What is database? Ans.: A database is a logically related data records. 2. What is field? Ans.: Field is a vertical entity in a database. i.e. column of a table. 3. What is a record? Ans.: Record is a horizontal entity in a database. i.e. row of a table. 4. What is an entity? Ans.: A real world object is called an entity 5. What is an instance? Ans.: A finite set of tuples in the relational database system represents relation instance. 6. What is an attribute? Ans.: An attribute is a database component describe the instances in the row of a database. It is also known as database field.

14 7. What is domain? Ans.: The domain is the set of all allowed values for the attributes. 8. What is a relation? Ans.: A database relation is a predefined row/column format for storing information in a relational database. Relations are equivalent to tables. 9. What is normalization? Ans.: It is a systematic approach of fragmenting the tables for removing the redundancy and different anamolies. 10. What is data mining? Ans.: The discovery of knowledge from the collected data is called data mining. Two marks questions 1. Name the data types supported by DBMS. Ans.: Character, number, date, logical and memo 2. What is the difference between serial and direct access file organization? Ans.: In serial organization data is stored in the chronological order. In direct file organization data is stored randomly. Generally serial organization uses the continuous storage device like magnetic tape. Direct files are stored in the magnetic disks. 3. Give the advantages and disadvantages of index sequential access method. Ans.: Advantages Provides flexibility for users who need both type of accesses with the same file Permits efficient and economic use of sequential processing technique when the activity rate is high. Dis-advantages Extra storage space and processing time for the indexing is required. Hardware and software used are relatively expensive. 4. Classify the various types of keys used in database? Ans.: Primary key / super key, secondary key, candidate key and foreign key. 5. Give an example for selection operation. Ans.: Assume a table student(reg.no, name, combination, dob, marks)

15 SELECT * FROM STUDENT; It displays all tuples from the student table. SELECT NAME, COMBINATION, MARKS FROM STUDENT WHERE MARKS >=35; It displays all tuples that satisfies the given condition. i.e. all students who have scored 35 and more than 35 marks. 6. What is data warehouse? Ans.: The data warehouse is a central repository of current and historical data for creating the reports. Three marks questions 1. Mention the applications of database. Ans.: a) Academic application databases are used store the students information in the schools, colleges and universities. b) Medical applications patients records / history is stored in data base for quick access. c) Business applications In shops, malls and share market business transactions are stored in the database for online access 2. Give the difference between manual and electronic file systems. Ans.: Manual file system Electronic file system i) Entire process takes place manually i) Entire process takes by the machine ii) Speed and accuracy is limited ii) High speed and greater accuracy iii) Volume of data can be processed is limited iii) Large volume of data can be Processed 3. Explain any three components of E-R diagram. Ans.: Entity is a real world object or concept about which data is stored. The symbol use to represent the entity in the ER diagram is rectangle. Attributes which specifies properties or characteristics of entities. The oval symbol is used to represent the attribute in the ER diagram. Relationship which connects entities and represents meaningful dependencies among them. The rhombus symbol is used to represent the relationship. 4. What is relationship? Classify and give example. Ans.: Relationship which connects entities and represents meaningful dependencies among them. One-to-One relationship

16 It shows exactly one instance of an entity (E1) is associated with one instance of another entity (E2). The relationship between a COLLEGE and a PRINCIPAL is generally one to one relationship. That means a college must have one principal. This relationship is shown as follows: College Principal One-to-Many relationship One instance of an entity set (E1) is associated with zero, one or more instances of another entity set (E2), but for one instance of entity E2 there is only one instance of entity E1. For example, one lecturer engage the class for many students. Similarly each student has only one lecturer in a class. Lectuer Students Many-to-One relationship One instance of an entity set (E2) is associated with zero, one or more instances of another entity set (E1), but for one instance of entity E1 there is only one instance of entity E2. For example, many students study one particular course. Students Course 3. Many-to-Many One instance of an entity (E1) is associated with one, zero or many instances of another entity (E2), and one instance of entity E2 is associated with one, zero or many instances of entity E1. For example, many students may participate in different projects. Similarly each project requires many students. Students Projects 5. Explain ISAM with example.

17 Ans.: In ISAM, each data record of a file has a key field which uniquely identifies that record. An index consists of keys and corresponding physical address. An indexed sequential file is a sequential file (arranged using a key field) which has an index. A full index to a file is one in which there is an entry for every record. An indexed sequential file also uses random access device like magnetic disks. Indexed sequential files are important for applications where data needs to be accessed sequentially or randomly. Advantages Provides flexibility for users who need both type of accesses with the same file Permits efficient and economic use of sequential processing technique when the activity rate is high. Dis-advantages Extra storage space and processing time for the indexing is required. Hardware and software used are relatively expensive. 6. Explain data base users. Ans.: Data Base Administrator (DBA) A super user who creates, alters and uses the database. A DBA provides the blue print or architectural layout of a database and has overall control of database. Only DBA can issue the permissions for other users for the access of data. Database designer As per the blue print by the DBA database designer group design the database schema by applying the constraints and specification of data storage. Application programmer In an organization user interacts with the database through an application software. These application software are designed by application programmers. End user An user who uses the database to fulfill his needs is called an end user. This user has least access rights to database. 7. Explain hierarchical data model. Ans.: Hierarchical model It uses tree structures to represent relationship among records. The tree structure is common in organizations. Because there is an existence of multiple entity sets and those have been ordered in hierarchical order. The entities in this model are related in one to many relationships. For example, a college has a number of courses to offer. Each course has a number of students registered for it. The following figure illustrate the hierarchical structure. College Course1 Course2 Course3 Stud1 Stud2 Stud n Stud1 Stud2 Stud n Stud1 Stud2 Stud n 8. Explain relational data model. Ans.:

18 The relational database approach was proposed by E.F.Codd s theoretical paper. The hierarchical and network model can be replaced by neat and easily understandable structure called relational model. A relation is used to represent the information about any entity and its relationships with other entities in the form of attributes and tuples. The properties of relational model are: a) Each column has a distinct name and value must be simple or automic b) Each row is distinct. i.e. one row cannot duplicate another row for selected key attribute. c) The sequence of row is immaterial. An example for a relational model is given below: Student relation Attribute1 Attribute2 Attribute3 Attribute4 Attribute5 Register number Student name Course studying Date of birth Total marks Tuple 1 S Navya PCMC Tuple 2 S Kavin D souza PCME Tuple 3 S Sathyashrunga PCMC Tuple 4 S Vedantha PCMB Tuple 5 S Rehman PCMB Five marks questions 1. Explain data processing cycle? 2. Explain data independence in detail. 3. Discuss file organization with respect to physical data independence. 4. Explain the features of database system. 5. Explain DBMS architecture. 6. Explain database model. Chapter 14 : SQL TWO marks questions 1. Classify numeric and character string data types in SQL. Ans.: Numeric data types - int and float. Character types character, varchar and varchar2. 2. Classify various SQL operations.

19 Ans.: Selection, insertion, updation and deletion. 3. Which are the logic operators in SQL? Ans.: ALL, AND, ANY, BETWEEN, EXISTS, IN, LIKE, NOT, OR, IS NULL, UNIQUE 4. How do you modify the column name and width for existing table? Ans.: A column properties can be changed using ALTER command with MODIFY option. It can be used as follows. ALTER TABLE table_name MODIFY (column_name new_type(new_size)); 5. What is the use of NULL value? Ans.: NULL means data is not available. For example, in student database the contact number of the student is not provided, it cannot be left blank. This field must be filled with NULL value. FIVE marks questions 1. Explain SQL constraints with example. 2. Explain a) DDL commands with syntax and examples. b) DML commands with syntax and examples. Chapter 15 : Networking concepts ONE mark questions 1. What is networking? Ans.: An interconnection of two or more computers for sharing of resources is called networking. 2. What is server? Ans.: It is a high speed computer system where data and applications are stored in a network. 3. What is client? Ans.: A node which request the server for the particular service in a client server network. 4. What is topology? Ans.: The appearance or layout of connected devices in a network. 5. Expand 2G. Ans.: Second Generation

20 6. What is a virus? Ans.: It is a destructive software program enters into a computer system without the knowledge of the user. 7. What is chatting? Ans.: It is a text based communication tool for effective communication through the internet. 8. What are cookies? Ans.: Cookies are small files which are stored on a user's computer. They are designed to hold a small lookup table containing pairs of (key, data) values - for example (first name, last name). 9. What are hackers? Ans.: Hackers can also be internet security experts to find problems in the systems. TWO marks questions 1. List the goals for networking. Ans.: Resource sharing Efficient communication between the users 2. What do you mean by transmission modes? Ans.: The term Transmission mode defines the direction (one way or two way) of the flow of information between two communication devices. It also tells whether the flow is concurrent or not. 3. Which are the switching technologies used? Ans.: Circuit switching, message switching and packet switching. 4. Expand SIM card? Ans.: Subscriber Identity Module 5. What is network security? Ans.: The mechanism of securing the computer systems including data and applications from the enemies, natural calamities or any external or internal threats. FIVE marks questions 1. Explain various networking device used? 2. What is topology explain any two types in detail? 3. Explain network security in detail.

21 4. Give the measures for preventing virus. Chapter 16: Internet and open source concepts ONE mark questions 1. What are free software? Ans.: Free software means users have the freedom to run, copy, distribute, study, change and improve the software. 2. What freeware? Ans.: Freeware ( "free" and "software") is software that is available for use at no monetary cost. It may have one or more restricted usage rights such as source code is not available and redistribution is prohibited. 3. Define e-commerce? Ans.: It is the purchasing, selling, and exchanging of goods or services over the Internet. 4. Expand IPR? Ans.: Intellectual Property Rights Three marks questions 1. Write the advantages of WWW? Ans.: Time any time it can be accessed Localization It brings the entire world to doorstep. Versatile tasks Different types of tasks can be performed as per the users requirements. 2. What is telnet? Ans.: Telnet is a network protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. Telnet provided access to a command-line interface on a remote host. To telnet means to establish a connection with the Telnet protocol, either with command line client or with a programmatic interface. 3. Write a note on open sources? Ans.: Open Source is a software distributed with the source code that anybody can study, modify for their own needs and redistribute without any capital. Generally, open source refers to a computer program in which the source code is available to the general public for use and / or modification from its original design. Open-source code is

22 typically a collaborative effort where programmers improve upon the source code and share the changes within the community so that other members can help improve it further. 4. Explain free software? Ans.: Free software means that the users have the freedom to run, copy, distribute, study, change and improve the software. A program is free software if the program's users have the four essential freedoms: The freedom to execute the program as per the user s requirements of any kind. The freedom to study how the program works and modify it so that it can work for your needs. The freedom to redistribute copies to others. The freedom to distribute copies with modifications, so that you can help others with your contributions as well. 5. Explain types of e-commerce? Ans.: Business to business Consumer to business Business to consumer Consumer to consumer. ONE mark questions Chapter 17: Web Designing 1. What is HTML? Ans.: The HTML is a markup language for web designing. 2. What will be the extension of hypertext markup language file? Ans.:.HTML 3. What is the use of web page? Ans.: Web page contains set of information used to display in the world wide web. 4. What do you mean by domain? Ans.: Group of computers belong to an organization is called domain. These computers are identified in a world wide web using unique website name. 5. What do you mean by hosting? Ans.: Hosting or web hosting means make the website of the individuals or organizations accessible through the World Wide Web. 6. What is web scripting?

23 Ans.: A process of editing of scripts (commands) to automate the execution of tasks by a certain program or scripting engine. THREE marks questions 1. What is web scripting? Ans.: A script is group of commands and normally those are embedded in a web page. Script may be written for variety of purposes using scripting languages. The programs written are interpret (rather than compile) and automate the execution of tasks by a certain program or scripting engine. The process of editing of scripts using scripting languages to automate the execution of tasks by a certain program or scripting engine is called webscripting. 2. Write the differences between client side and server side script Ans.: Client-side scripts generally refers to the set of programs are executed at client-side, by the user's web browser. In contrast, the server side scripts is helpful for completion of task at the server end and then sending the results to the client end. The client-side scripting is used to get the data from the users screen, customizing the display in browser without refreshing, online games etc., Server-side scripting is used when the information is sent to a server to be processed at the server end.