Digital Transmission in the physical layer in DCN
Digital Transmission in the physical layer Digital transmission converts digital data into signals suitable for transmission over a physical medium. Key aspects of digital transmission: 1. Digital Signals: - In digital transmission, data is represented as discrete, binary signals. These signals can take on two voltage levels, often re…
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PERFORMANCE IN THE PHYSICAL LAYER in DCN
PERFORMANCE IN THE PHYSICAL LAYER The performance of data communication in a network refers to how effectively and efficiently the physical medium facilitates the transmission of data between devices. Some key factors and metrics associated with the performance of the Physical Layer: 1. Data Rate (Bit Rate): the rate at which bits are transmitte…
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Impairments in the physical layer in DCN
Impairments in the physical layer Impairments a factors or conditions that degrade the quality of the signal during travel in the physical medium. Some common impairments in the physical layer include: 1. Attenuation: Attenuation is a reduction in signal strength in a medium(cable). Measured in decibels (dB). 2. Distortion: Distortion …
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INTRODUCTION OF THE PHYSICAL LAYER IN DCN
INTRODUCTION OF THE PHYSICAL LAYER The Physical Layer is the lowest layer in the OSI (Open Systems Interconnection) model. The main function is to establish and manage the physical connection between devices and transmit raw binary data over a physical medium. Some key functions of the physical layer: · Data encoding: Converting digit…
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Security in Data Communication and Networking
Security in Data Communication and Networking Security in data communication and networking is ensuring the confidentiality, integrity, and availability of data as it is transmitted over a network. Some following important reasons are : - · Protecting sensitive data, such as financial information, personal data, and intellectual property ·…
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