Assignment Set – 1

Q1. Explain the functional units of the 8086 Microprocessor and discuss the role of Bus Interface Unit (BIU) and Execution Unit (EU).

Ans 1.

The Intel 8086 is a 16-bit microprocessor introduced in 1978. It was the earliest member of the x86 family and became the base for current personal computing designs. The 8086 can be internally split into two independent, operational units that are parallel: the Bus Interface Unit (BIU) and the Execution Unit (EU). This division permits instructions fetching and execution to work together, dramatically increasing the speed of execution compared to previous processors.

Bus Interface Unit (BIU)

It is the Bus Interface Unit is responsible of all communication between the microprocessor with the MUJ

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Q2. Discuss the problem of forward references in a single pass assembler. How are undefined symbols handled?

Ans 2.

An assembly converts programming into machine code. Most assemblers operate in two successive passes through the source code. A two-pass assembler can resolve all symbols definitions during the initial pass, and then generates object code during the second. An assembler that is single-pass, attempts to generate object code with just one pass through the source code. While this is faster and more efficient with memory However, it presents a serious

Q3. Differentiate between Macro Name Table (MNT) and Macro Definition Table (MDT). Describe the working of a simple bootstrap loader in detail. Explain how object code is read, converted, stored in memory, and executed.

Ans 3.

Part A — MNT vs MDT

In macro processors, there are two key data structures are utilized to manage and store macro definitions. They are Macro Name Table (MNT) and the Macro Name Table (MNT) and the Macro Definition Table (MDT).

The Macro Name Table (MNT) is an index table which keeps the name for each macro in

Assignment Set – 2

Q4. Explain the process of program relocation in a linker with suitable explanation of translated origin, linked origin, and relocation factor.

Ans 4.

If a program is written and assembles, the assembler generally generates object codes assuming that the program will be loaded at a specified memory address, often starting at address zero. The assumed address for starting is called the translated starting point. However, in the real system, multiple programs may require co-existence in memory. Furthermore, a program might not be

Q5. Explain how PCI devices configure automatically during boot time. Discuss the role of device drivers in PCI initialization.

Ans 5.

PCI (Peripheral Component Interconnect) is a hardware bus protocol for connecting peripherals the motherboard. Its Plug and Play support allows devices to be automatically detected and configured in the boot process without manual intervention, managed by the BIOS and operating system.

PCI Configuration Space

Every PCI device contains a configurable space of 256 bytes, which is which is a common

Q6. Explain the importance of security in the Android Operating System with reference to modern smartphone applications and threats. Explain the difference between local network resource discovery using Simple Service Discovery Protocol and Internet-wide discovery using UDDI.

Ans 6.

Part A — Android Security

Android is among the most popular mobile operating system in the world, powering millions of tablets and smartphones. In the wake of the explosion of mobile banking electronic commerce, personal communications and health software, security has become the primary concern of Android’s architecture. Android includes multiple layers of security to guard users as well as

SET-I

Q1. a. Explain the dual aspect concept and the matching concept in accounting.

1. Explain the importance of financial statements. 5 + 5

Ans 1.

1. Dual Aspect Concept

The dual aspect concept is the foundation of modern double-entry accounting. It states that every business transaction has two aspects—a giving aspect and a receiving aspect—which must be recorded equally. This concept ensures that the accounting equation Assets = Liabilities + Capital always remains in balance. For example, when a business purchases machinery worth ₹50,000 for cash, there is an increase in assets (machinery) and a decrease in another asset (cash). Similarly, if goods are sold on credit, the business receives a debtor and gives away stock. This dual effect maintains accuracy, prevents manipulation, and ensures that financial books reflect the true financial position. It also forms the basis for preparing trial balances and financial

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Q2. Record journal entries for the following transactions of Priya Traders:

1. Commenced business with ₹1,20,000.
2. Bought furniture for ₹10,000 in cash.
3. Sold goods for ₹30,000 on credit to Anil.
4. Paid salary ₹5,000.
5. Received commission ₹2,000 by cheque 2*5

Ans 2.

Journal Entries of Priya Traders

JOURNAL OF PRIYA TRADERS

Q3a. Explain the steps in financial planning

1. Explain factors affecting the Capital structure. 5+5

Ans 3.

(a) Steps in Financial Planning

Financial planning is the systematic estimation and arrangement of financial resources to ensure smooth business operations. It ensures that adequate funds are available at the right time to support both short-term and long-term business goals.

1. Estimating Financial Requirements

The first step is identifying how much money the business needs for fixed assets (machinery,

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Q4. From the following information, calculate:

1. Contribution per unit and Profit/Volume (P/V) Ratio
2. Break-even point (in units)

Selling Price per unit: ₹50

Variable Cost per unit: ₹35

Fixed Cost: ₹45,000  

Ans 4.

Calculate Contribution per Unit, P/V Ratio, and Break-Even Point

Given:

• Selling Price per unit (SP) = ₹50
• Variable Cost per unit (VC) = ₹35
• Fixed Cost (FC) = ₹45,000

(a) Contribution per Unit & P/V Ratio

Step 1: Contribution per Unit

Formula

Q5.a. Explain the meaning and objectives of budgetary control.

1. Discuss its advantages and limitations. 4+6

Ans 5.

(a) Meaning and Objectives of Budgetary Control

Budgetary Control

Budgetary control is a systematic managerial technique that involves preparing budgets for various departments, comparing actual performance with these budgeted figures, and taking corrective actions wherever necessary. It ensures that every activity operates within planned limits and helps management coordinate future operations. Through continuous monitoring, budgetary control provides a structured approach for planning, executing, and evaluating financial and operational performance.

Objectives of Budgetary Control

The primary objective of budgetary control is planned operations, ensuring that all future activities are clearly defined and financial requirements are estimated in advance. Another major

Q6. The summarized final accounts of two companies are as follows:

Balance Sheet

Revenue Statement for the year

You are required to calculate the following ratios for X and Y Ltd.

(1) Current Ratio (2) Capital gearing ratio (3) Gross profit ratio (4) Net profit ratio

Ans 6.

Ratio for X Ltd and Y Ltd.

1. Current Ratio

Formula

X Ltd

• Current Assets = ₹1,25,400
• Current Liabilities = ₹93,500

SET-I

Q.1. Define a system. Explain its elements and characteristics. Discuss different types of systems with suitable examples. (3+3+4 = 10 Marks)

Ans 1.

Definition of a System

A system is made up of interrelated and interdependent components or elements that work together in a coordinated manner to achieve a common, specific goal or create the desired output. Systems operate at every level of human endeavor and technology that range from the solar system in the cosmic scale up to microprocessors at the miniature size. When it comes to computer engineering and information technology systems are a specifically designed mixture of software, hardware, data, people, and procedures that collectively serve a particular purpose to

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Q.2. Define Software Engineering and explain its need. Discuss software characteristics. Explain McCall’s Quality Factors in detail. (3+3+4 = 10 Marks)

Ans 2.

Definition and Need for Software Engineering

Software Engineering is the systematic rigorous, systematic, and quantitative use of engineering concepts instruments, techniques, and methodologies to the specification, design developing, testing, managing, and maintenance of software system. This term was introduced at the 1968 NATO Software Engineering Conference in Garmisch, Germany, to combat what they described as a “software crisis” — a pattern of prominent software failures that were characterized by

Q.3. What is Requirement Analysis? Explain requirement anticipation and the role of a system analyst. Discuss the knowledge and qualities required for a good system analyst. (3+3+4 = 10 Marks)

Ans 3.

Requirement Analysis

Requirement Analysing is the procedure of identifying, determining the, documenting, validating and governing the needs that the software must meet to successfully serve its intended users as well as meet its business goals. It is generally recognized as the most crucial and influential phase of the Software Development Life Cycle because the mistakes and oversights that are introduced during requirement analysis compound in the cost and complexity when they are propagated through the subsequent stages of development. Research consistently demonstrates

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Q.4. Explain input and output design in software systems. Describe UML diagrams and their importance in system design with examples. (4+6 = 10 Marks)

Ans 4.

Input Design

Input design refers to the process of determining what data should be gathered, validated, and entered into software systems from external sources like human users as well as connected devices, software systems and data files. The fundamental objective of effective input design is to collect all the relevant data it requires, while minimizing chances of errors while reducing the time required from users, and ensuring the only complete, valid well-formatted data are entered

Q.5. Define software testing and explain its characteristics. Differentiate between verification and validation with suitable examples. (4+6 = 10 Marks)

Ans 5.

Definition of Software Testing

Software testing is the procedure of testing a system or component by executing it in controlled conditions so that you can assess the extent to which it meets the requirements specified by its creator and detect any differences between the behavior and expected behavior and evaluate the overall quality and reliability of the program before it is released. Testing isn’t just the act of using a software program to test if it works; it is a disciplined and planned engineering process

Q.6. Explain Black Box Testing and White Box Testing. Discuss equivalence partitioning, boundary value analysis, and statement & branch coverage techniques. (4+6 = 10 Marks)

Ans 6.

Black Box Testing

Black Box Testing, also called specification-based or functional tests A testing method in which the tester examines the behaviour of the software in response to inputs. This is done without understanding of or any reference to the internal source code and algorithms or the architectural design. Software is viewed as an opaque black box, which transforms inputs and outputs according to its specification. Test cases are created only from the specifications documents, use cases and the requirements that are stated. The role of the tester is to verify that every function

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Q.1. What is trust management in network security? Explain the concept of policy language and credential validation. (3+3+4 = 10 Marks)

Ans 1.

Trust Management in Network Security

Trust management is a unified structure that operates on a basis of policy. It is used in distributed networks to determine, interpret, and then automatically enforce security rules that define who’s allowed to use which resource under which circumstances. Traditional access control systems rely on central authority servers and existing identity databases that are not scalable and can become single point of failure within large, dynamic, open networks such as the internet. Trust management replaces rigid methods with flexible, credential-based authorization frameworks where access decisions are taken by evaluating if a requester’s digitally signed credentials

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Q.2. What is correlation and traceback in network security? Explain alert correlation and IP traceback techniques. (3+3+4 = 10 Marks)

Ans 2.

Correlation in Network Security

Correlation is the analytical process of regularly aggregating, normalizing and analysing security incidents generated through a variety of heterogeneous sources of data simultaneously to detect sophisticated attack campaigns, coordinated multi-stage attacks, and advanced persistent threats that isolated instances would not ever disclose. Modern networks for enterprise generate many

Q.3. What is complete mediation? Explain the principle of economy of mechanism, fail-safe defaults, and separation of privilege. (3+3+4 = 10 Marks)

Ans 3.

Complete Mediation

The principle of complete mediation is an integral security design concept that stipulates that every single access request to any protected resource needs to be validated against the current access control policy on each and every occasion, without any exception, without caching previous authorization decisions, and without assuming that permissions that were granted previously are relevant in the present. The principle was formally articulated in the work of Saltzer and Schroeder in their landmark 1975 paper on protection of data in computer systems and a logical framework of concepts that has remained the fundamental intellectual basis for

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Q.4. What are Message Authentication Codes (MACs)? Explain HMAC and CBC-MAC. How do MACs differ from digital signatures? (2+3+3+2 = 10 Marks)

Ans 4.

Message Authentication Codes (MACs)

A Message Authentication Coding (MAC) can be described as a small digital cryptographic token that has a fixed length. It is calculated from a variable-length input message and a shared secret key, used to simultaneously verify both the integrity and the authenticity of the communication anyone with the same secret key. Integrity verification ensures that the message content has not been accidentally altered or intentionally changed during transmission. Validity checks confirm the authenticity of the messages generated from a person who owns the shared

Q.5. Explain buffer overflow attacks and how to prevent them. Discuss stack-based and heap-based overflow. (5+5 = 10 Marks)

Ans 5.

Buffer Overflow Attacks

Buffer overflow attacks exploit mistakes in programming when a program copy more data into the memory buffer of a certain size that it was originally designed for, leading excess data to flow past the buffer’s boundary and write over adjacent memory areas with critical information for program control. Buffer-overflow vulnerabilities are among the earliest, most perilous, and frequently utilized classes of security vulnerability that was responsible for the Morris Worm of 1988, the first major internet-scale attack that was attributed to countless prominent security

Q.6. Explain the working of the ARP protocol. Discuss ARP poisoning/spoofing attack and its countermeasures. (3+3+4 = 10 Marks)

Ans 6.

Working of the ARP Protocol

It is the Address Resolution Protocol (ARP) is a non-stateless Layer 2 Network Protocol which is utilized for IPv4 local area networks that automatically resolve physical IP addresses to the physical MAC (Media Access Control) addresses required for constructing acceptable Ethernet frames.

ARP Poisoning / Spoofing Attack

ARP poisoning, often referred to ARP spoofing or ARP cache poisoning is a network-based

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Q.1. a) Explain different types of data types used in Python. b) How membership and identity operator works? Explain with example. (5+5 = 10 Marks)

Ans 1.

1. a) Data Types in Python

Python is an open-source language that is dynamically typed so variables do not require declarations of their type before usage. Python auto-infers its type from the allocated value when it is run. Python provides a variety of built-in data types that determine what kind of data can be stored and what operations can be applied to it.

int (Integer) int (Integer): Displays complete numbers with no decimal component either negative or positive. Python integers are able to handle arbitrary precision, meaning they can be

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Q.2. a) What is the role of file modes in file handling? Explain in detail. b) Explain different methods of adding new data item into list data structure. (5+5 = 10 Marks)

Ans 2.

1. a) File Modals in Python for File Handling

The handling of files in Python allows programs to create and read, write and control files on disk. The built-in open() function is utilized for opening a file and it accepts a mode parameter to determine how the file will be opened as well as which operations are allowed in it. It is critical because choosing incorrectly could erase the existing data in error or block important operations.

“r” (Read Mode)”r” (Read Mode): opens an existing file solely for reading. The file’s pointer

Q.3. a) How tuples are different from list? List different built-in methods used with tuples. b) What is dictionary? How to add and remove data into dictionary. (5+5 = 10 Marks)

Ans 3.

1. an) Variations Between Tuples and Lists

Lists and tuples are both ordered sequence data structures that are part of Python that allow for the storage of arrays of heterogeneous elements. But, they are different in their mutability, performance characteristics, memory usage, and suitable use scenarios. Mutability: Lists are flexible, which means their contents can be changed at will upon creation. Element can be added, changed and removed anytime. Tuples can be completely unchangeableafter creation, no element is able to be added, modified, or removed in any circumstance. Any attempt to modify a list of

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Q.4. a) Explain the concept of variable length and keyword arguments in Python. b) Describe different types of recursions with example. (5+5 = 10 Marks)

Ans 4.

1. A) Variable Length as well as Keyword Arguments

Python functions are flexible in their arguments that enable the function to take a variety of arguments without having the caller to specify exactly what number of arguments are passed in the course of defining a function definition. *args (Variable-Length Arguments for Position): Adding an asterisk after a parameter’s name in the definition of a function lets the function accept any number of positional arguments that are provided by the person calling. The body of the function arguments are treated as an ordinary tuple that contains every additional argument for position passed by the caller. This is very useful in the design of utility functions that require processing an undetermined and possibly fluctuating quantity of inputs such for summing any number value or concatenating any amount of strings. *kwargs (Variable-Length Keyword

Q.5. What is encapsulation? How class variables are different from instance variables. (10 Marks)

Ans 5.

Encapsulation in Python

Encapsulation is one of the four main pillars of Obj-Oriented Programming. It is a part of polymorphism and inheritance as well as abstraction. It’s the concept of connecting the related data (attributes) and the strategies (functions) that work with the data within a single logical unit called classes, but also restricting access from outside only to internal components within the unit. Encapsulation serves two interconnected purposes: it organizes codes by keeping the related information and behaviors together and also protects the state of objects against unintentional

Q.6. Explain steps for database connectivity in Python. Discuss DDL, DML commands with example. (10 Marks)

Ans 6.

Steps for Database Connectivity in Python

Python provides powerful database connectivity capabilities through both the built-in sqlite3 module for SQLite databases and third-party connectors such as mysql-connector-python for MySQL and psycopg2 for PostgreSQL. This Python Database API Specification (PEP 249) defines a standardized interface that all databases need to implement. It ensures that the basic steps of database interaction remain consistent regardless of the specific software engine used for the database.

Step 1 — Install and Import: Install the required database connector library using pip (pip install

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Q.1. Define Data Mining. Explain its importance in the modern data-driven world. (5+5 = 10 Marks)

Ans 1.

Definition of Data Mining

Data Mining refers to the process of automatically discovering relevant patterns, relationships, abnormalities, and valuable insights hidden within large datasets using statistical, mathematical, and machine-learning techniques. This is also known in the form of Knowledge Discovery in Databases (KDD). The raw data stored in databases, data warehouses and other repositories of information is processed through a structured process that involves data cleansing Data

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Q.2. Discuss the difference between Operational Databases and Data Warehouse. (5+5 = 10 Marks)

Ans 2.

Operational Databases (OLTP)

Operational databases, often referred to Online Transaction Processing (OLTP) Systems, are made to support the routine day-to-day business transactions. They handle extremely large volumes of short, real-time transactions which include insertions, changes, deletions, and simple lookup inquiries. The information stored in operational databases reflects what is happening in the operational processes and can be updated constantly and in real-time. These databases use highly normalized schema designs to eliminate data redundancy and maintain the integrity of referential data, which ensures continuity across many concurrent transactions. For instance, a

Q.3. What is a Data Cube? Describe how data cubes organize data into dimensions and measures to support fast analytical queries. (3+7 = 10 Marks)

Ans 3.

Definition of a Data Cube

A Data Cube is a multi-dimensional data structure used for Online Analytical Processing (OLAP) systems for arranging business information across multiple categorical viewpoints called dimensions, enabling analysts to look at slices, aggregate, and view data from multiple angles at once. As opposed to tables that are flat and two-dimensional that are slender, data cubes can have three or more dimensions that provide a deeper and better-organized representation of the complex business information. Each cell in the cube has a measurement value corresponding

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Q.4. What is an Association Rule? Define Support, Confidence, and Lift. Explain their importance in Association Rule Mining. (3+7 = 10 Marks)

Ans 4.

Association Rule

An Association Rule is an if-then implied statement in the form of A implies B that is automatically derived from huge transactional datasets, expressing that transactions which contain item A are highly likely to also contain itemset B. Association rule mining is the computation process that identifies every relevant rule from transaction databases.

Support

Support describes how often the rule or item occurs across the entire transaction database.

Q.5. Discuss how charts convert raw data into visual information for better understanding and decision-making. (10 Marks)

Ans 5.

Role of Charts in Data Visualization

Charts are visual representations of data that transform raw numerical data into visual formats so that our brains are able to process, interpret, and remember more efficiently as tables of data. The research in cognitive psychology shows that human brains process visual data 60 times faster than numeric or textual data. An effective chart immediately reveals trends, patterns, comparative relationships, distributions, and other outliers that require hours of research to uncover from data tables. Charts translate the meaning of numbers into the visual words of sizes,

Q.6. Explain the key steps of the dashboard development process in detail. (10 Marks)

Ans 6.

Introduction to Dashboard Development

Dashboards provide an interactive interface for visuals which consolidates and presents key measures of performance, indicators and trends from a variety of data sources on one screen, enabling stakeholders to monitor organizational health and make informed choices in a single glance. A dashboard that actually serves those who need it needs a systematic, user-centered approach that is able to balance technical implementation in conjunction with design principles