Network and Data Communications · Unit 1
Network Fundamentals and OSI Model
Exam-focused notes for Network Fundamentals and OSI Model (Network and Data Communications, BIT254): what the TU syllabus asks and how it has actually been tested, with 6 solved past questions from this unit.
What this unit covers
- OSI reference model layers
- OSI layer functionality and hardware
- Practical implications of OSI layers
- TCP/IP protocol suite layers
- Network categories and types
- Guided transmission media
- Unguided transmission media
Unguided transmission media
Discuss different unguided transmission medium in brief. [5]
Definition: Unguided (wireless) transmission media transmit electromagnetic signals through free space (air) without using any physical conductor. The signal is broadcast and can travel in multiple directions. --- - Frequency range: 3 KHz to 1 GHz - Omnidir...
Full solved answer →TCP/IP protocol suite layers
Explain the layers TCP/IP protocol suite in detail.[10]
The TCP/IP protocol suite (also called the Internet Protocol Suite) is a set of communication protocols used for interconnecting network devices on the internet. It is named after its two most important protocols: Transmission Control Protocol (TCP) and Int...
Full solved answer →Guided transmission media
Discuss different guided transmission medium in brief. [5]
Guided transmission media are physical pathways that guide (direct) electromagnetic signals from sender to receiver along a specific path. The signal is bound within the medium. --- - Consists of two insulated copper wires twisted together in a helical form...
Full solved answer →Practical implications of OSI layers
What are the practical implications of OSI layer? Define each layer focusing on its functionality and hardware used in each layer[10]
The OSI (Open Systems Interconnection) model is a conceptual framework developed by ISO that standardizes the functions of a communication system into seven distinct layers. It provides a universal language for networking, allowing diverse systems to commun...
Full solved answer →Network categories and types
List different categories of networks and explain [5]
--- Networks are broadly categorized based on their geographical coverage, size, and ownership. --- - Covers the smallest area, typically within a person's reach (a few meters). - Used for connecting personal devices like smartphones, laptops, Bluetooth hea...
Full solved answer →OSI reference model layers
Explain different layers of OSI [5]
The OSI (Open Systems Interconnection) model is a conceptual framework developed by ISO that standardizes the functions of a communication system into seven distinct layers. Each layer performs specific functions and communicates with the layers directly ab...
Full solved answer →Make Unit 1 stick
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