What is User Agent?
This component of an electronic mail system provides service to the user to make the process of sending and receiving a me…
What is Recursive Function ?
A recursive function is a function that contain a call to the function itself. Recursive function allows us to divide comp…
What is Constructor ?
A constructor is a special method that is created when the object is created. This particular method holds the same name a…
What does MIME stands for and where it is used ?
Multipurpose internet mail extensions. It is an Internet standard that extends the format of e-mail to support, text in ch…
Explain the following statement of C: int (*x) [20]
X is a array of 20 pointers to integers.
Show that a+(a.b)=a
a + ab = a (1+b) = a
What information does a superblock of a file system contain ?
A superblock is a record of the characteristics of a file system including its size, block size, the empty and filled bloc…
List two disadvantges of a database system as compared to a file-based system.
Database systems are complex, difficult and time consuming. Damage to data base affects virtually all application progra…
List the basic difference between DOS and UNIX.
DOS is a single user operating system and UNIX is multiuser operating system.
What is ARP ? How it differ from IP?
ARP: Address Resolution Protocol is a computer networking protocol for determining a network host's hardware address w…
Is a two dimensional array passed as a value or reference argument to a function ?
Two dimensional arrays are passed as reference argument. If a two dimensional array is to be passed to a function, the pa…
What is a foreign key in an RDBMS?
A foreign key in a relation is an attribute which is primary key of some other relation.
Mention two advantages of a DBMS over a file storage of data.
Data redundary can be avoided by using DBMS. DBMS provide backup and recovery and concurrency control.
What is the full form of SMTP?
Simple Mail Transfer Protocol . It is an application level protocol used for electronic mail.
What are the typical sizes of the main memory and hard disk of a modern desktop computer ?
Main Memory 4GB DRAM Hard disk 500 GB
Name two application layer protocols.
1. TELNET 2. SMTP
Between the iterative routine sum-iter and recursive routine sum-rec, which is more efficient and why?
Sum-iter function is more efficient than the recursive function sum-rec. Ever time a recursive function calls itself all t…
A Relational operator ?
Yields of a Boolean result
A static variable is one ?
Which retains its value throughout the life of the program.
How is XCOPY a better command than COPY ?
XCOPY command copy the whole directory, sub folders and all files within it. It also copies all hidden files. COPY command…
Distinguish berween break and continue statements in C.
A break statement terminates the execution of the loop and the control is transferred to the statement immediately followi…
Distinguish between the block variable and the local variable?
A block variable is valid only within the block in which it is defined. It is not visible outside the block. It is creat…
What is Bitwise Operator?
A bitwise operator operates on each bit of data. These operators are used for testing, complementing and shifting bits t…
What is Program Counter? What information does it store?
Program Counter is a register inside a processor that contain address of the next instruction to be executed. After execu…
List the desirable features of an algorithm?
(a) Top to down structured flow. (b) Large algorithms must be broken into smaller ones with minimum coupling between them…
Computing and Informatics
What is a Router?
Router Meaning Router is a device used to determine the routes that a packet must take upon arrival at its input l…
What is Bridge?
It is a device that is used to connect two LANs together. They LAN's can be of different type. Bridge receives packets…
What is a key word and what are the restrictions of using them?
Key word is a word with special meaning. For example in C programming language words int, float etc are key words. The use…
Distinguish between the data and information?
Data is a collection of useful values. Processed data gives information. Collection of marks obtained by students is raw …
What is Telnet?
It is a popular client server application program. TELNET is an abbreviation for terminal network. It is a standard applic…
How does a 'while' control structure differ from 'do while ' structure?
The while loop first check the condition given in the while statement. If this condition is satisfied, then the statements…
Computing and Informatics
What is memory management? Why is it essential in a multi -user environment?
Memory management is schemes for using the available memory in a computer system in an effective manner. Memory manageme…
What is EPROM? How is it different from PROM?
EPROM : Erasable and programmable read only memory. It is a type of semiconductor read only memory in which contents can b…
Why are NAND and NOR gates called universal gates?
NAND and NOR gates are called universal gates because any boolean function can be implemented using NAND or NOR gates onl…
What is ternary operator? Is any such operator available in C language? If yes, explain with an example?
In C ternary operator is available and is denoted by symbol? : A traditional C statement and its equivalent C ternary con…
The scope of a variable refers to the?
Portion of code in which the variable may be meaningful.
What are the important ways in which windows operating system is different from DOS?
Windows is a multi-threaded operating system . Multiple threads are executed on time sharing basis. Thus while one activit…
What is BIOS in DOS?
BIOS is a collection of program stored in hardware ROM. BIOS contain device drivers for standard devices so that DOS cou…
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