Computer Science MCQS

Breakdown of the definition:

Programs: These are the executable instructions that the computer follows to perform tasks.

Documentation: This includes user manuals, technical specifications, and other written materials that explain how to use and maintain the software.

Configuration data: This refers to the data that determines how the software behaves, such as settings, preferences, and database information.

Together, these components form a complete software package that can be used to solve specific problems or perform specific functions.

Why "Single-ended queue" is not a type of queue?

A queue is inherently a double-ended data structure.

It has two primary operations: enqueue (adding to the rear) and dequeue (removing from the front).

The term "single-ended queue" is a contradiction.

If it were single-ended, it would essentially be a stack, not a queue.

Therefore, among the given options, single-ended queue is not a valid type of queue.

The other options are valid queue types:

Priority queue: Elements have priorities, and the highest priority element is dequeued first.

Circular queue: The rear and front pointers wrap around to the beginning of the array when they reach the end.

Ordinary queue: The standard queue implementation with a front and rear pointer.

hy B-trees are not balanced binary trees

B-trees are indeed not balanced binary trees.

Key difference: While they are balanced, they are not binary trees.

Multiple children: Unlike binary trees, which have at most two children per node, B-trees can have multiple children (typically a minimum number defined by the order of the B-tree).

Efficiency: B-trees are designed for efficient storage and retrieval of large datasets on disk, where reading and writing data from disk is relatively slow. By allowing multiple children per node, B-trees can reduce the number of disk accesses required for search, insert, and delete operations.

In summary, while B-trees maintain balance properties to optimize performance, they deviate from the strict binary structure of binary trees.

The other options:

Splay trees, AVL trees, and Red-black trees are all types of balanced binary trees, meaning they have specific rules to maintain balance and ensure efficient operations.

Efficiency: It's designed to efficiently store boolean values (0 or 1) by utilizing individual bits instead of entire bytes or words.

Memory savings: This approach significantly reduces memory usage compared to traditional arrays that store each element as a complete byte or larger data type.

Applications: Bit arrays are commonly used in various algorithms and data structures, such as bloom filters, bitmaps, and set representations.

Essentially, a bit array is like an array, but instead of storing elements like integers or characters, it stores individual bits.

ircular linked lists are particularly well-suited for scenarios where a cyclical or repetitive pattern is involved. In the context of CPU allocation, this is precisely the case.

Round-robin scheduling: This is a common algorithm used to allocate CPU time to multiple processes.

Circular nature: A circular linked list forms a loop, perfectly representing the cyclic nature of round-robin scheduling.

Efficient iteration: The circular structure allows for easy traversal from one process to the next without the need for special end-of-list checks.

By maintaining a circular linked list of processes, the operating system can efficiently cycle through them, granting each process a time slice of CPU time in turn. Once the last process is served, the list wraps back to the beginning, ensuring fairness and equal opportunity for all processes.

Would you li

Explanation:

LIFO means the last element added to the stack is the first one to be removed.

Imagine a stack of plates. The last plate you put on the stack is the first one you take off.

This behavior is essential in many applications, such as function calls, expression evaluation, and backtracking algorithms.

Key operations of a stack:

Push: Adds an element to the top of the stack.

Pop: Removes the top element from the stack.

Peek: Returns the top element without removing it.

isEmpty: Checks if the stack is empty.