Data Structure through C Language Online MCQ practice set

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Exam Question

Which of the following data structure store the homogeneous data elements?

1. Arrays
2. Records
3. Pointers
4. None

View Answer

Answer 2. Records

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Exam Question

The memory address of the first element of an array is called

1. Floor address
2. foundation address
3. first address
4. base address

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Answer 4. base address

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Exam Question

Which of the following data structure is not linear data structure?

1. Arrays
2. Linked lists
3. Both of above
4. None of above

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Answer 4. None of above

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Exam Question

The size of a structure can be determined by; a. size of variable name; b. size of (struct tag)

1. Only a
2. Only b
3. Both a and b
4. None of these options

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Answer 3. Both a and b

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Exam Question

Finding the location of the element with a given value is:

1. Traversal
2. Search
3. Sort
4. None of above

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Answer 2. Search

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Exam Question

Sorting is useful for

1. Report generation
2. Minimizing the storage needed
3. making searching easier and efficient
4. Responding to queries easily

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Answer 3. making searching easier and efficient

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Exam Question

To create a linked list, we can allocate space and make something point to it, by writing:

1. struct-name *pointer-variable. Which of the following statement will correctly allocate the space
2. pointer-variable = malloc(sizeof(*struct-name));
3. pointer-variable = malloc(sizeof(struct struct-name));
4. pointer-variable = alloc(sizeof(struct struct-name));

View Answer

Answer 3. pointer-variable = malloc(sizeof(struct struct-name));

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Exam Question

To delete a dynamically allocated array named `a`, the correct statement is

1. delete a;
2. delete a[0];
3. delete []a;
4. delete [0]a;

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Answer 1. delete a;

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Exam Question

The five items: A, B, C, D and E are pushed in a stack, one after the other starting from A. The stack is popped four times and each element is inserted in a queue. Then two elements are deleted from the queue and pushed back on the stack. Now one item is popped from the stack. The popped item is

1. A
2. B
3. C
4. D

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Answer 4. D

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Exam Question

The difference between linear array and a record is

1. An array is suitable for homogeneous data but the data items in a record may have different data type
2. In a record, there may not be a natural ordering in opposed to linear array
3. A record form a hierarchical structure but a linear array does not
4. All of above

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Answer 4. All of above

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Exam Question

The term “push” and “pop” is related to the

1. Array
2. lists
3. stacks
4. all of above

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Answer 3. stacks

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Exam Question

The number of possible binary trees with 4 nodes is

1. 12
2. 13
3. 14
4. 15

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Answer 3. 14

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Exam Question

When new data are to be inserted into a data structure, but there is no available space; this situation is usually called

1. underflow
2. overflow
3. housefull
4. saturated

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Answer 2. overflow

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Exam Question

In an array queue, data is stored in an…element.

1. Node
2. Linked list
3. Array
4. Constructor

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Answer 3. Array

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Exam Question

The pop () member function determine if the stack is empty by calling the…

1. member function
2. removeback ()
3. isEmpty ()
4. removedfront ()

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Answer 3. isEmpty ()

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Exam Question

Linked lists are best suited

1. for relatively permanent collections of data
2. for the size of the structure and the data in the structure are constantly changing
3. for both of above situation
4. for none of above situation

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Answer 2. for the size of the structure and the data in the structure are constantly changing

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Exam Question

Each array declaration need not give, implicitly or explicitly, the information about-

1. the name of array
2. the data type of array
3. the first data from the set to be stored
4. the index set of the array

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Answer 3. the first data from the set to be stored

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Exam Question

…form of access is used to add and remove nodes from a stack.

1. LIFO, Last In First Out
2. FIFO, First In First Out
3. Both 1 and 2
4. None of these

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Answer 1. LIFO, Last In First Out

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Exam Question

Which of the following is the feature of stack?

1. All operations are at one end
2. It cannot reuse its memory
3. All elements are of different data types
4. Any element can be accessed from it directly

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Answer 1. All operations are at one end

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Exam Question

Array passed as an argument to a function is interpreted as

1. Address of the array
2. Values of the first elements of the array
3. Address of the first element of the array
4. Number of element of the array

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Answer 3. Address of the first element of the array

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