SCAS - BCA ANSWER SCHEMES

  Section A Answer any 5 questions. Each question carries 2 marks. 1.       Explain WDM? Wavelength Division Multiplexing (WDM) is a technology in fiber-optic communications that multiplexes multiple optical carrier signals on a single optical fiber by using different wavelengths (colors) of laser light. This allows for increased data transmission capacity by simultaneously transmitting multiple data streams over the same fiber. 2.       What  is transmission medium? A transmission medium is a material substance that can propagate energy waves, such as light, sound, or electromagnetic waves. Common examples include optical fiber, copper wire, and air, each serving as a conduit for transmitting data in various communication systems. 3.       Explain UTP? Unshielded Twisted Pair (UTP) is a type of cable used in networking that consists of pairs of wires twisted together to reduce electromag...

  Section A Answer any 5 questions. Each question carries 2 marks. 1.       Define operating system An operating system (OS) is a program that manages the computer hardware and provides a basis for application programs. It acts as an intermediary between the computer user and the computer hardware, optimizing hardware utilization and providing a user interface for executing programs. 2.       Write about evolution of OS The evolution of operating systems is tied to the development of computer systems. Early systems included batch processing systems in the 1950s, time-sharing systems in the 1960s, and personal computer systems in the 1970s. Key milestones include the introduction of UNIX, the development of graphical user interfaces, and the rise of mobile operating systems like iOS and Android. 3.       What are the functions of OS? The primary functions of an operating system include process ...

  Section A Answer any 5 questions. Each question carries 2 marks. 1.       What do you mean by Knowledge Repository? A Knowledge Repository is a centralized place to store information and knowledge, which can be easily accessed and retrieved. It is used to manage and disseminate knowledge within an organization or community, enhancing learning, innovation, and efficiency. 2.       What is Cyber Presence? Cyber Presence refers to an individual's or organization's existence and activities in the digital space, including social media, websites, online forums, and other internet-based platforms. It reflects how they are perceived and interact within the cyber world. 3.       What is 3R principle in environmental issues? The 3R principle stands for Reduce, Reuse, and Recycle. It is a strategy for managing waste and promoting environmental sustainability by minimizing the amount of waste produced, ...

  Section A Answer any 5 questions. Each question carries 2 marks. 1. Define Program Counter and Stack Pointer Program Counter (PC): The Program Counter is a register that holds the address of the next instruction to be executed in the sequence. Stack Pointer (SP): The Stack Pointer is a register that points to the top of the current stack in memory. 2. What are the Types of BUS in Microprocessor Address Bus: The Address Bus carries the address of the memory location or I/O device that the CPU wants to access. Data Bus: The Data Bus transfers actual data between the CPU, memory, and peripheral devices. Control Bus: The Control Bus carries control signals, such as read/write commands and interrupt requests, to coordinate and manage the activities of the CPU and other components. 3. What is an Interrupt? List Out the Types. Hardware Interrupts: Generated by external hardware devices (e.g., keyboards, mice). Software Interrupts: Triggered by software i...