DCA3108 APTITUDE AND TECHNICAL DEVELOPMENT

Description

SESSION	JULY 2026
PROGRAM	BACHELOR OF COMPUTER APPLICATIONS (BCA)
SEMESTER	V
COURSE CODE & NAME	DCA3108 APTITUDE AND TECHNICAL DEVELOPMENT

 

 

SET-I

 

Q.1. a) A train covers a total distance of 1200 km. It travels the first 300 km at a speed of 60 km/hr, the second 300 km at 100 km/hr, the third 300 km at 150 km/hr, and the final 300 km at 300 km/hr. Determine the average speed of the train for the entire journey. b) A man completes a work in 12 days and another man completes the same work in 18 days. How many days will they take to complete the work together? (5+5 = 10 Marks)

Ans 1.

Concept of Average Speed

The average speed for a trip that is done in several stages at different speeds is not the arithmetic mean of the different speeds. It is equal to the total distance travelled divided by the total time spent for the entire journey. Because the distance is the same through each of these stages but at different rates, the time for each stage must be determined separately before an average speed for the total distance and time can be calculated. This method provides us with an accurate indication of the average speed of the train as it had varying speeds on different

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Q.2. Explain the concept of number series and alphabet series with suitable examples. (10 Marks)

Ans 2.

Meaning of Number Series

A number series is a series of numbers arranged in a specific pattern or in accordance with a specific rule and the task is to find the missing numbers in the series or predict the next number in the series by identifying the pattern or rule. Patterns may be formed by simple addition or subtraction between two successive terms, by multiplying or dividing by a constant, or by more elaborate rules, such as square or cube, or a combination of two different patterns interlaced.

Common Types

 

 

 

Q.3. Contrast the procedural programming paradigm with Object-Oriented Programming. Provide a comprehensive explanation of the four foundational pillars of OOP: Encapsulation, Abstraction, Inheritance, and Polymorphism. (10 Marks)

Ans 3.

Procedural Programming Paradigm

Procedural programming is a programming paradigm that structures a program as a series of steps, typically defined in functions or procedures that act on data provided to them. The data and functions that manipulate the data are stored separately, so that any function within the program can access and change shared data. It works fine with small simple programs, but is difficult to handle as the program becomes larger, as changes in data found in one section of the program can have

 

 

SET-II

 

Q.4. Explain the critical role of body language in a professional setting. How do specific elements like eye contact, posture, and gestures contribute to creating a positive first impression, and how can poor body language undermine an otherwise strong verbal performance? (10 Marks)

Ans 4.

Importance of Body Language in Professional Settings

Communication in the workplace isn’t just about the spoken word. Body language, including facial expressions, posture, gestures and eye contact, accounts for a considerable portion of what any message has to say. Body language is a very important skill to learn because in many instances, it can create an impression before listeners have absorbed the message of the speech, such as during an interview, a

 

 

Q.5. Explain the role of functions in achieving modularity and code reusability in C programming. Compare and contrast the memory mechanics of “call by value” versus “call by reference”. (10 Marks)

Ans 5.

Role of Functions in Modularity

A function is a block of code in C that is self contained and performs a specific task. Modular programming is based on the idea of dividing a large program into smaller functions that perform a single, well-defined task. This design is much easier to read, debug and maintain since a problem can typically be found in a single function instead of having to track through hundreds of lines of interspersed logic.

Role of Functions in Code Reusability

After writing and testing, a function

 

 

Q.6. Explain in detail Linked List, Stack and Queue Data Structure. (10 Marks)

Ans 6.

Linked List

A linked list is a linear data structure that consists of nodes, each of which contains data and a reference to the next node in the list. Unlike an array, the elements of a linkedlist are not stored in contiguous memory locations; so it becomes easier to insert or remove elements from a linkedlist as compared to an array (insertion and deletion becomes generally more efficient than in an array). The downside is that accessing a node in the list requires traversing the list from the start, as there is no direct access to a node within the list, like an array index.

Types of