Following are the multiple choice questions (MCQs) or objective questions from Data Structures and Algorithms. The questions are set from the topics such as arrays, records, pointers, linked lists, stacks, queues, recursion, trees, sorting and searching.
Set - 2
1. The memory address of the first element of an array is called
b. foundation address
c. first address
d. base address
2. The memory address of fifth element of an array can be calculated by the formula
b. LOC(Array[5])=Base(Array[5])+(5-lower bound), where w is the number of words per memory cell for the array
c. LOC(Array[5])=Base(Array[4])+(5-Upper bound), where w is the number of words per memory cell for the array
d. None of above
3. Which of the following data structures are indexed structures?
b. linked lists
c. both of above
d. none of above
4. Which of the following is not the required condition for binary search algorithm?
b. there should be the direct access to the middle element in any sublist
c. There must be mechanism to delete and/or insert elements in list
d. none of above
5. Which of the following is not a limitation of binary search algorithm?
b. requirement of sorted array is expensive when a lot of insertion and deletions are needed
c. there must be a mechanism to access middle element directly
d. binary search algorithm is not efficient when the data elements are more than 1000.
6. Two dimensional arrays are also called
b. matrix arrays
c. both of above
d. none of above
7. A variable P is called pointer if
b. P points to the address of first element in DATA
c. P can store only memory addresses
d. P contain the DATA and the address of DATA
8. Which of the following data structure can't store the non-homogeneous data elements?
b. Records
c. Pointers
d. None
9. Which of the following data structure store the homogeneous data elements?
b. Records
c. Pointers
d. None
10. Each data item in a record may be a group item composed of sub-items; those items which are indecomposable are called
b. atoms
c. scalars
d. all of above
11. The difference between linear array and a record is
b. In a record, there may not be a natural ordering in opposed to linear array.
c. A record form a hierarchical structure but a lienear array does not
d. All of above
12. Which of the following statement is false?
b. data elements in linked list need not be stored in adjecent space in memory
c. pointers store the next data element of a list
d. linked lists are collection of the nodes that contain information part and next pointer
13. Binary search algorithm can not be applied to
b. sorted binary trees
c. sorted linear array
d. pointer array
14. When new data are to be inserted into a data structure, but there is no available space; this situation is usually called
b. overflow
c. housefull
d. saturated
15. The situation when in a linked list START=NULL is
b. overflow
c. housefull
d. saturated
16. Which of the following is two way list?
b. circular header list
c. linked list with header and trailer nodes
d. none of above
17. Which of the following name does not relate to stacks?
b. LIFO list
c. Piles
d. Push-down lists
18. The term "push" and "pop" is related to the
b. lists
c. stacks
d. all of above
19. A data structure where elements can be added or removed at either end but not in the middle
b. Stacks
c. Queues
d. Deque
20. When inorder traversing a tree resulted E A C K F H D B G; the preorder traversal would return
b. FAEKCDHGB
c. EAFKHDCBG
d. FEAKDCHBG
Answers
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