Q: What is the difference between Stack and Queue?

A: Stack is a Last In First Out (LIFO) data structure.
     Queue is a First In First Out (FIFO) data structure

Q: Write a fucntion that will reverse a string. (Microsoft)

A: char *strrev(char *s)

{

int i = 0, len = strlen(s);

char *str;

if ((str = (char *)malloc(len+1)) == NULL) /*cannot allocate memory */

err_num = 2;

return (str);

}

while(len)

str[i++]=s[–len];

str[i] = NULL;

return (str);

}

Q: What is the software Life-Cycle?

A: The software Life-Cycle are

1) Analysis and specification of the task

2) Design of the algorithms and data structures

3) Implementation (coding)

4) Testing

5) Maintenance and evolution of the system

6) Obsolescence

Q: What is the difference between a Java application and a Java applet?

A: The difference between a Java application and a Java applet is that a

Java application is a program that can be executed using the Java

interpeter, and a JAVA applet can be transfered to different networks

and executed by using a web browser (transferable to the WWW).

Q: Name 7 layers of the OSI Reference Model? (from Cisco)

A:

-Application layer

-Presentation layer

-Session layer

-Transport layer

-Network layer

-Data Link layer

-Physical layer