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…
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