BCA DCA2203 SYSTEM SOFTWARE

Description

SESSION	SEPTEMBER 2025
PROGRAM	BACHELOR OF COMPUTER APPLICATIONS (BCA)
SEMESTER	IV
COURSE CODE & NAME	DCA2203 SYSTEM SOFTWARE

 

 

 

SET-I

 

Q1. Define the differences between linker and loader.      10       

Ans 1.

Differences Between Linker and Loader

In system software, both the linker and the loader play crucial roles in the process of program execution. They are responsible for preparing object programs, combining modules, and placing them into memory for execution. Although they work in close coordination, their functions are distinct. Understanding the difference between these two components is essential for grasping how programs transition from compilation to execution.

Concept of Linker

A linker is a

 

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Q2. What is the role of the BIU and EU in 8086? How do they interact? 5+5   

Ans 2.

Role of BIU and EU in 8086 and Their Interaction

The Intel 8086 microprocessor, introduced by Intel in 1978, is a 16-bit processor that revolutionized computer architecture. It features a powerful Bus Interface Unit (BIU) and Execution Unit (EU), which work together to enhance processing speed through parallel operation. Understanding their roles and coordination is key to grasping 8086’s internal functioning.

Role of the Bus

 

Q3. Discuss the unique features that make Android superior to other mobile operating systems 10   

Ans 3.

Android, developed by Google, is the world’s most popular mobile operating system. Built on a modified version of the Linux kernel, it provides an open, flexible, and customizable platform for developers and users alike. Its architecture and ecosystem make it superior to other mobile OS platforms such as iOS and Windows Mobile.

1. Open-Source Platform

One of Android’s biggest

 

 

SET-II

 

Q4. Define the difference between the Symbol Table, Pseudo Instruction Table (PIT), and Location Counter (LC) used in an assembler. 10         

Ans 4.

An assembler is a crucial system program that converts assembly language code into machine language. During this translation process, it maintains several internal data structures to organize instructions, symbols, and memory addresses. Among the most significant of these are the Symbol Table, the Pseudo Instruction Table (PIT), and the Location Counter (LC). Each serves a distinct function in ensuring the correctness and efficiency of the assembly process.

Symbol Table

The Symbol Table is a data structure that stores all symbols, labels, and identifiers used in an assembly program

 

Q5. What is an overlay-structured program and how does it help to reduce memory usage during execution? 5+5     

 

Ans 5.

An overlay-structured program is a programming technique designed to efficiently utilize limited main memory by dividing a large program into smaller, manageable parts called overlays. These overlays are loaded into memory only when required, thus reducing the overall memory usage during execution. This approach was widely used in older systems with limited physical memory, but its principles remain relevant even in modern computing through virtual memory

 

Q6. How do UPnP control points interact with devices and services during the discovery phase?           5+5 

Ans 6.

Interaction of UPnP Control Points with Devices and Services During the Discovery Phase

Universal Plug and Play (UPnP) is a networking protocol that allows devices to discover and communicate with each other automatically over a local network. It eliminates the need for manual configuration, enabling seamless interoperability among smart devices. The discovery phase is the initial stage of UPnP communication, during which control points (clients) identify