DELL PLACEMENT QUESTIONS

Dell Written test-software Engineer Trainee
Note : Answer all Questions in Section I, I and III maximum correct attempts in
this section will be qualified
Section I : Programming
Answer any 5 of the following
1. Write a program that ask for user input from 5 to 9 then calculate the average
2. Implement strcat {} function with out using string function and optimize the
function for speed and space
3. Write a function to reverse a linked list
4. Write a recursive function to get the factorial of a given number only if it is
prime
5 Write a C++ programme without using any loop {if,for,while etc}to print number
form 1 to 1-- and 100 to 1
6. Write a programme to Exchange two number without using a temporary
variable
7 Write a function to find if the given number is a power of 2
8. Write a function in 2 different ways that will return f{7} = 4 and f (4) = 7
9. Write a function to remove duplicates in array
10. convert integer number in binary without loops
Section II -Oops
1. What are the main features of OOPS ? Explain them briefly
2. What is a virtual function ? Explain with an example?
3. What is the difference between overloading and overriding?
4. In inheritance explain the public private protected modifiers behaviors on data
members.
5 What is a factory method, give reference to any example class
Section III : analytical
1..If you have a 5 liter and a 3 liter measuring can, how would you measure
exactly 4 liters of liquid?
2 Suppose you had 8 billiard balls, and one of them was slightly heavier, but the
only way to tell was by putting it on a scale against another. What's the fewest
number of times you'd have to use the scale to find the heavier ball?
3 a magical pond has one lotus flower in it begin with. At the end of every day
the number of flowers doubles. It takes 30 days to fill the complete pond.. How
many days will it take to fill half the pond with lotus flowers?
4 In an analog clock how many days each day do both the hour hand and minute
hands overlap?
5.. There is a room with a door {closed} and three light bulbs. Outside the room
there are three switches connected to the bulbs. You may manipulate the
switches as you wish, but once you open the door you cant change them. Identify
each switch with its bulb
Section IV Fundamentals
1. What is composition and aggregation?
2 What is the difference between pointers and references? why?
3. What is the order of calling of constructors and destructors in class hierarchy?
Explain
4. What is RITI?
5. difference between array, vector,list and dequeue?
6. Explain "Passing by value","passing by pointer" and "passing by reference"?
7. what is the difference between thread ad a processing are the used?
8. What is the difference between heap and stack memory? when are they used?
9. Implement a algorithm to sort an array?
10. Explain pre-order,post-order and in-order binary tree traversal?
11 What is the difference between char a [] ="string";and char .p ="star";?
12 What is the difference between union and struct?
13 Explain compling and linking in brief?
14 What is a DLL? Explain a few advantages of using DLL's.
15 What is an interrupt?
16. What is the difference between UDP and TCP protocols?
17. Explain in brief Client Server technology?
18 How will you get the no. of instances created for a class from within the
class?
19 What are RAM and ROM also explain difference between them?
20 What is the difference between HTTP GET and HTTP Post?Explain