Course Code:  MLII-103

MLII-103: Fundamentals of Information Communication Technologies

Assignment Code: AST/TMA/ Jul.2025-Jan.2026

Q1. What do you mean by Storage Technology? Describe various types of storage technologies with suitable examples.

Answer: Storage Technology:

Storage technology refers to the methods, devices, and systems used to store, retain, and retrieve data and information in digital form for future use. It is a core component of information technology and plays a vital role in computing, libraries, information centres, and organizations. Storage technology ensures that data remains safe, accessible, and reusable over time.

In information systems, storage technology supports the preservation of text, images, audio, video, and databases. It allows users to store large volumes of information efficiently and retrieve it quickly when required. Storage technologies may be temporary or permanent, online or offline, and local or cloud-based, depending on usage needs. Factors such as capacity, speed, cost, reliability, and security influence the choice of storage technology.

Types of Storage Technologies with Examples:

Storage technologies can be broadly classified into several types based on their function and medium. Primary storage, also known as main memory, includes Random Access Memory (RAM) and cache memory. It provides fast access to data but is volatile, meaning data is lost when power is switched off. It is mainly used for temporary data processing.

Secondary storage is non-volatile and used for long-term data storage. Examples include Hard Disk Drives (HDDs) and Solid-State Drives (SSDs). HDDs are magnetic storage devices widely used in computers and servers, while SSDs use flash memory and offer faster speed and reliability.

Optical storage uses laser technology to read and write data. Common examples are CDs, DVDs, and Blu-ray discs, often used for backups and data distribution. Magnetic tape storage is another important type, mainly used for archival and backup purposes due to its high capacity and low cost.

Q2. Explain the ISO/OSI reference model with the help of a diagram.

Answer: ISO/OSI Reference Model: Storage technologies can be broadly classified into several types based on their function and medium. Primary storage, also known as main memory, includes Random Access Memory (RAM) and cache memory. It provides fast access to data but is volatile, meaning data is lost when power is switched off. It is mainly used for temporary data processing.

Secondary storage is non-volatile and used for long-term data storage. Examples include Hard Disk Drives (HDDs) and Solid-State Drives (SSDs). HDDs are magnetic storage devices widely used in computers and servers, while SSDs use flash memory and offer faster speed and reliability.

Functions of OSI Layers:

Each of the seven layers in the OSI model has a well-defined function. The Physical layer is responsible for transmitting raw bits over a physical medium such as cables or wireless signals. It defines hardware specifications like voltage, connectors, and data rate.

The Data Link layer ensures error-free transmission between directly connected nodes. It handles framing, error detection, and flow control. The Network layer manages logical addressing and routing of data packets, determining the best path for data transfer.

The Transport layer provides end-to-end communication, ensuring reliable data delivery through error recovery, segmentation, and flow control. The Session layer establishes, maintains, and terminates communication sessions between devices.

The Presentation layer handles data formatting, encryption, and compression, ensuring data is readable by the receiving system. Finally, the Application layer interacts directly with users and provides network services such as email, file transfer, and web browsing.

Together, these layers ensure systematic, reliable, and standardized data communication, making the OSI model a vital reference in networking and information technology.

Q3. Describe the different types of switching techniques used in telecommunication networks.

Answer: Switching Techniques in Telecommunication Networks – Circuit Switching:

Circuit switching is one of the earliest and traditional switching techniques used in telecommunication networks. In this method, a dedicated communication path is established between the sender and the receiver before the actual transmission of data begins. Once the connection is set up, the entire bandwidth of the circuit is reserved exclusively for that communication until the call or session is terminated.

The process of circuit switching involves three phases: call establishment, data transfer, and call termination. During data transfer, information flows continuously without interruption, ensuring constant quality and low delay. The most common example of circuit switching is the Public Switched Telephone Network (PSTN), where a fixed path is created for voice communication.

Packet Switching:

Packet switching is the most widely used switching technique in modern telecommunication and computer networks. In this method, data is broken into small units called packets, each containing part of the data along with destination and control information. These packets are transmitted independently through the network and may follow different routes to reach the destination, where they are reassembled in the correct order.

Unlike circuit switching, packet switching does not require a dedicated path. Network resources are shared among multiple users, making this technique highly efficient and cost-effective. The Internet is the best example of a packet-switched network. Packet switching supports both real-time and non-real-time communication, including email, web browsing, video streaming, and file transfer.

Message switching:

Message switching is an early switching technique where the entire message is sent as a single unit from the source to the destination. Unlike circuit switching, no dedicated path is established. Instead, the message is transmitted from one switching node to another using a store-and-forward mechanism. Each node stores the complete message temporarily before forwarding it to the next node.

In message switching, the message includes destination address information, enabling the network to route it appropriately. This technique was commonly used in telegraph systems and early computer communication networks. One advantage of message switching is that it does not require a dedicated circuit, leading to better utilization of network resources compared to circuit switching.

However, message switching has significant drawbacks, such as long transmission delays, as the entire message must be received and stored at each node before being forwarded. It also requires large storage capacity at switching nodes. Due to these limitations, message switching is no longer used in modern networks but is historically important as it laid the foundation for packet switching techniques used today.

Q4. What is a library network? Discuss the important activities of DELNET.

Answer: Library Network- A library network is a cooperative system in which two or more libraries are interconnected to share resources, services, and expertise using information and communication technologies. The main objective of a library network is to avoid duplication of resources, reduce costs, and improve access to information for users. Through networking, libraries can collectively provide a much wider range of documents and services than any single library can offer on its own.

Library networks facilitate resource sharing such as interlibrary loan, document delivery, shared cataloguing, and access to electronic databases. They also promote standardization in library practices, including cataloguing, classification, and automation. By using computer networks and digital platforms, library networks enable libraries to exchange bibliographic data, develop union catalogues, and support collaborative collection development.

Important Activities of DELNET

DELNET (Developing Library Network) is one of the earliest and most important library networks in India. Established in 1988 in Delhi, DELNET aims to promote resource sharing and cooperation among libraries through the use of modern information technology. It connects academic, research, special, and government libraries across India and abroad.

One of the key activities of DELNET is the creation and maintenance of union catalogues of books, periodicals, theses, dissertations, and non-book materials. These union catalogues help libraries identify and locate documents available in other member libraries. DELNET also provides interlibrary loan (ILL) and document delivery services, enabling users to access materials not available in their home libraries.

Another important activity is bibliographic and reference services, including access to databases, directories, and research support tools. DELNET organizes training programs, workshops, and seminars to enhance the professional skills of library and information professionals. It also promotes standardization in library automation and networking.

Q5. Write short notes on any two of the following:

1. Goals of Convergence
2. Types of Microforms
3. Operating System
4. Internet radio

Answer: a) Goals of Convergence

Convergence refers to the integration of computing, communication, and content technologies into a unified system. The primary goal of convergence is to provide seamless access to information and services through a single platform or device. It aims to combine voice, data, text, images, and video so users can access multiple services anytime and anywhere.

Another important goal is efficient use of resources. By merging technologies and networks, convergence reduces duplication of infrastructure and lowers operational costs. It also enhances user convenience, allowing services such as internet, television, telephony, and multimedia to operate together.

Convergence further aims to promote innovation and flexibility by enabling new applications, digital services, and business models. In libraries and information centres, convergence supports integrated library systems, digital libraries, and online user services. Overall, the goal of convergence is to create a connected, interactive, and user-centric information environment.

c) Operating System

An operating system (OS) is system software that acts as an interface between computer hardware and the user. It manages hardware resources such as the CPU, memory, storage, and input/output devices, ensuring efficient operation of the computer system.

The OS performs essential functions like process management, memory management, file management, and device control. Common examples include Windows, Linux, macOS, and Android. In libraries and information centres, operating systems support library automation software, digital repositories, and online services.

An operating system provides a user-friendly environment, enhances system security, and allows multiple applications to run simultaneously, making it the backbone of modern computing systems.