BT-205 Basic Computer Engineering - Jun 2023 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aDescribe the following: i) Remote sensing and GIS ii) Computer applications in E-business
   How to answer

   • Definition and working principles of Remote Sensing and GIS
   • Applications of GIS in mapping, navigation, and environmental tracking
   • Role of computers in E-business (ERP, supply chain, CRM, e-commerce)
   • Key benefits of technology adoption in business processes
2. 7 Marks
   bExplain I/O devices in detail with suitable examples.
   How to answer

   • Definition and role of Input and Output devices in a computer system
   • Classification and detailed explanation of common input devices (keyboard, mouse, scanner)
   • Classification and detailed explanation of common output devices (monitor, printer, plotter)
   • Brief overview of dual-purpose (input/output) devices
3. 7 Marks
   aExplain memory and type of memory in detail.
   How to answer

   • Definition of computer memory and its significance
   • Memory hierarchy diagram (registers, cache, main memory, secondary storage)
   • Primary memory: RAM (SRAM, DRAM) and ROM (PROM, EPROM, EEPROM)
   • Secondary storage devices: HDD, SSD, optical disks
4. 7 Marks
   bDefine algorithms. What is the need of algorithms? Describe three benefits of algorithms.
   How to answer

   • Formal definition of an algorithm and key characteristics (finiteness, definiteness, input/output)
   • Need/importance of algorithms before coding
   • Three distinct benefits (e.g., modularity/scalability, language independence, easier debugging and optimization)
5. 7 Marks
   aExplain procedure-oriented programming with examples.
   How to answer

   • Definition of Procedure-Oriented Programming (POP)
   • Key characteristics: focus on functions/procedures, top-down design, global vs local data
   • Simple code example in C showing functions
   • Limitations of POP leading to Object-Oriented Programming
6. 7 Marks
   bExplain the following: i) data type ii) tokens iii) variables iv) operator
   How to answer

   • Data types: classification (primitive, derived, user-defined) with examples
   • Tokens: definition as smallest individual units (keywords, identifiers, literals, operators, punctuators)
   • Variables: declaration, naming rules, memory allocation
   • Operators: arithmetic, relational, logical, bitwise, assignment
7. 7 Marks
   aExplain data structures in detail.
   How to answer

   • Definition of data structures and their importance in efficient computation
   • Classification: Linear (Arrays, Linked Lists, Stacks, Queues) vs Non-linear (Trees, Graphs)
   • Common operations: traversing, searching, inserting, deleting, sorting
   • Brief description of each type with real-world use cases
8. 7 Marks
   bDefine objects and classes. can a class in C++ have more than one constructor with the same name? Justify your answer with suitable example.
   How to answer

   • Definitions of Class (blueprint) and Object (instance)
   • Affirmation of constructor overloading: Yes, multiple constructors can exist with different parameter lists
   • C++ code example demonstrating default constructor, parameterized constructor, and copy constructor
   • Explanation of how the compiler resolves the appropriate constructor call
9. 7 Marks
   aExplain Function overloading and Operator overloading with an example.
   How to answer

   • Concept of compile-time polymorphism in C++
   • Function overloading: definition and code example with different signatures
   • Operator overloading: definition, syntax `operator op()`, and code example (e.g., overloading `+` for complex numbers)
10. 7 Marks
    bExplain TCP/IP model in detail with a diagram.
    How to answer

    • Overview and purpose of the TCP/IP protocol suite
    • Diagram depicting the 4/5 layers of TCP/IP
    • Detailed explanation of each layer: Application, Transport, Internet, Network Access/Host-to-Network
    • Mention of key protocols at each layer (HTTP, TCP/UDP, IP, ARP)
11. 7 Marks
    aDescribe Denial of Service (DoS) and logic bombs in detail.
    How to answer

    • Denial of Service (DoS): mechanism, flooding attacks, and impact on system availability
    • Logic bombs: definition, malicious code triggered by specific events/dates, modus operandi
    • Prevention and mitigation strategies for both threats
12. 7 Marks
    bWrite a short note on good computer security habits.
    How to answer

    • Introduction to cybersecurity hygiene
    • Key security habits: strong passwords, multi-factor authentication (MFA)
    • Regular software updates and patching vulnerabilities
    • Safeguards against phishing, safe browsing, data backup, and using antivirus software
13. 7 Marks
    aDescribe data independence and DBA in detail.
    How to answer

    • Concept of Data Independence in three-schema architecture
    • Distinction between Physical Data Independence and Logical Data Independence
    • Role and responsibilities of a Database Administrator (DBA): schema definition, security, backup, recovery, and performance tuning
14. 7 Marks
    bWhat do you understand by cloud computing? Describe cloud infrastructure in detail?
    How to answer

    • Definition of cloud computing and fundamental characteristics (on-demand self-service, broad network access, resource pooling)
    • Components of Cloud Infrastructure: hardware (servers, storage, network), virtualization layer, and management layer
    • Overview of delivery models (IaaS, PaaS, SaaS) and deployment models (public, private, hybrid)
15. 14 Marks
    Write short note : (on any two) a) Pros and cons of cloud computing b) World Wide Web c) Characteristics of OOP d) Classification of computer
    How to answer

    • a) Pros (cost, scalability, accessibility) vs Cons (downtime, security, vendor lock-in) of cloud computing
    • b) WWW: definition, architecture, HTTP, HTML, web browsers, and distinction from the Internet
    • c) Core OOP features: encapsulation, abstraction, inheritance, polymorphism
    • d) Classification based on size/processing power (microcomputers, minicomputers, mainframes, supercomputers) and purpose