BT-205 Basic Computer Engineering - Jun 2022 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
   aExplain the applications of computer in the field of Meteorology and Climatology, Multimedia and Animation.
   How to answer

   • Role and applications in weather forecasting, climate modeling, and satellite data analysis
   • Use of supercomputing and simulation tools in meteorology
   • Applications in digital media creation, video/audio editing, and graphic design
   • Role in 2D/3D animation, CGI, VFX, and rendering processes
2. 7 Marks
   bBriefly explain the functions of operating system.
   How to answer

   • Definition of Operating System as an intermediary interface
   • Processor / Process management (scheduling, creation, termination)
   • Memory management (allocation and deallocation of primary memory)
   • File management and secondary storage handling
   • I/O Device / Device management and Security/Protection functions
3. 7 Marks
   aExplain the various kinds of looping statements in C++? With examples.
   How to answer

   • Definition and purpose of loop statements
   • for loop: syntax, flow, and code snippet
   • while loop: entry-controlled mechanism, syntax, and example
   • do-while loop: exit-controlled mechanism, syntax, and example
   • Key difference between entry-controlled and exit-controlled loops
4. 7 Marks
   bWrite a program in C++ to convert the given binary number into the decimal number.
   How to answer

   • Input binary number from user
   • Extraction of remainder bits using modulo 10 in a loop
   • Multiplication of remainder with powers of 2
   • Accumulation to calculate decimal equivalent
   • Output the result
5. 7 Marks
   aWhat is a Constructor and Destructor? Explain them with a simple program.
   How to answer

   • Definition, properties, and invocation of constructor
   • Types of constructors (default, parameterized, copy)
   • Definition, properties, and syntax (tilde prefix) of destructor
   • Complete C++ program showing object creation and destruction with console messages
6. 7 Marks
   bDefine Inheritance. Explain different types inheritance with a suitable program.
   How to answer

   • Definition and advantages (reusability, extensibility) of inheritance
   • Classification of inheritance types (single, multiple, multilevel, hierarchical, hybrid)
   • Syntax of derived class in C++
   • Illustrative C++ program demonstrating at least one inheritance type
7. 7 Marks
   aDraw ISO - OSI model of computer networking? Explain function of each layer.
   How to answer

   • Neat diagram showing all 7 layers of OSI reference model in proper sequence
   • Function of Physical Layer (bit transmission, topology, physical media)
   • Function of Data Link Layer (framing, error control, flow control)
   • Function of Network Layer (routing, logical addressing)
   • Function of Transport Layer (end-to-end delivery, segmentation)
   • Functions of Session, Presentation, and Application Layers
8. 7 Marks
   bWrite short notes on. i) E-mail Spoofing ii) Denial of service
   How to answer

   • E-mail Spoofing: definition, forgery of email header, purpose (phishing, social engineering), and prevention mechanisms (SPF, DKIM)
   • Denial of Service (DoS): definition, mechanism of flooding resources/bandwidth, types (SYN flood, Ping of Death), and mitigation methods
9. 7 Marks
   aDraw and Explain the architecture database systems.
   How to answer

   • Diagram of the three-tier ANSI-SPARC / DBMS architecture
   • Explanation of External/View level
   • Explanation of Conceptual/Logical level
   • Explanation of Internal/Physical level
   • Concept of Physical and Logical Data Independence
10. 7 Marks
    bWrite down the Pros and Cons of cloud Computing.
    How to answer

    • Brief overview of Cloud Computing
    • Pros: cost savings, scalability/elasticity, accessibility, automatic updates, disaster recovery
    • Cons: downtime/internet dependency, security and privacy concerns, vendor lock-in, limited control
11. 7 Marks
    aExplain different computer memories in RAM, ROM, CACHE, REGISTER and HARD DISK in detail.
    How to answer

    • Overview of memory hierarchy (speed, cost, and capacity trade-offs)
    • Registers: fastest, internal to CPU
    • Cache Memory: SRAM-based, acts as buffer between CPU and RAM (L1, L2, L3)
    • RAM (DRAM/SRAM): volatile primary storage
    • ROM (PROM, EPROM, EEPROM): non-volatile firmware/BIOS storage
    • Hard Disk: magnetic non-volatile secondary storage
12. 7 Marks
    bExplain the concepts of OOP.
    How to answer

    • Definition of Object-Oriented Programming paradigm
    • Classes and Objects
    • Encapsulation and Data Hiding
    • Abstraction
    • Inheritance
    • Polymorphism (compile-time and runtime)
    • Dynamic Binding and Message Passing
13. 7 Marks
    aWhat is a Friend Function? Explain it with a suitable example program.
    How to answer

    • Definition of friend function and its declaration using the `friend` keyword
    • Characteristics (not a member function, can access private and protected members, invoked without dot operator)
    • C++ program declaring and defining a friend function to access private class members
    • Pros and cons regarding encapsulation
14. 7 Marks
    bDraw TCP/IP model of computer networking? Explain function of each layer.
    How to answer

    • Diagram depicting the 4 (or 5) layers of TCP/IP protocol suite
    • Network Access (Link) Layer functions and protocols
    • Internet Layer functions (IP addressing, routing) and protocols (IP, ICMP, ARP)
    • Transport Layer functions (TCP, UDP, port addressing)
    • Application Layer functions and common protocols (HTTP, FTP, DNS, SMTP)
15. 14 Marks
    Write short notes on: a) Good computer security habits b) Data Manipulation Language c) IaaS and PaaS
    How to answer

    • Good computer security habits: strong passwords, MFA, regular backups, software updating, cautious web surfing/phishing awareness
    • Data Manipulation Language (DML): definition, commands (SELECT, INSERT, UPDATE, DELETE), procedural vs non-procedural DML
    • IaaS and PaaS: definitions, characteristics, differences, and examples (AWS EC2 vs Google App Engine)