The digital creator

  What is OSI MODEL ? The OSI model, or Open Systems Interconnection model, is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven abstraction layers. Each layer serves a specific purpose and interacts with the layers above and below it.  The seven layers, from the lowest to the highest,  are: 1. Physical Layer : Deals with the physical connection between devices and transmission of raw binary data over a physical medium. 2. Data Link Layer : Responsible for node-to-node communication and error detection and correction in the physical layer. 3. Network Layer: Manages routing, addressing, and forwarding of data packets between devices on different networks. 4. Transport Layer: Ensures end-to-end communication, error recovery, and flow control between devices. 5. Session Layer : Establishes, manages, and terminates sessions (connections) between applications. 6. Presentation Layer: Translates data between the appli...

 NETWORK TOPOLOGY :-     I n the context of computer netwoks , topology refers to the arrangement of elements(links,nodes,etc.) in a network. it defines how different components of a network connected and how data is transmitted between them . network topology can have a significant impact on the performance ,reliability,and scalability of a network . several common types of network topologies exist , and each has its own advantage and disadvantages. There are some of the main types: 1. BUS TOPOLOGY:-            .In a bus topology all device share a single communication line (the bus).            .Data is sent by a device and is accessible to all other devices, but only the intended                              recipient  accepts and process the data.            .Simple and cost-effective,but can suf...

  What is Tuberculosis ? TB stands for tuberculosis. It is a contagious bacterial infection caused by Mycobacterium tuberculosis. TB primarily affects the lungs but can also target other parts of the body, such as the kidneys, spine, and brain. The infection spreads through the air when an infected individual coughs, sneezes, or talks, releasing tiny droplets containing the bacteria. When inhaled by others, these bacteria can settle in the lungs and cause an infection. TB can have both active and latent forms. In latent TB infection, the bacteria are present in the body but do not cause symptoms or illness. However, the bacteria can become active and cause tuberculosis disease if the person's immune system weakens. Symptoms of active TB include persistent coughing, sometimes with blood-tinged sputum, chest pain, fatigue, weight loss, fever, and night sweats. If left untreated, TB can be life-threatening. Treatment for TB usually involves a combination of antibiotics taken over seve...

  What Is  HUMAN DISEASE? Human diseases are illnesses or medical conditions that affect the normal functioning of the human body. There are numerous diseases that can affect different organ systems, and they can be caused by various factors such as genetic mutations, infections, lifestyle choices, environmental factors, and more. Here are some examples of common human diseases: 1. Cardiovascular diseases: These include conditions like coronary artery disease, heart attack, stroke, and high blood pressure. 2. Respiratory diseases: Conditions such as asthma, chronic obstructive pulmonary disease (COPD), pneumonia, and tuberculosis affect the lungs and the respiratory system. 3. Infectious diseases: These are caused by pathogenic microorganisms like bacteria, viruses, fungi, or parasites. Examples include influenza, HIV/AIDS, malaria, hepatitis, and COVID-19. 4. Cancer: A group of diseases characterized by abnormal cell growth. Types of cancer include breast cancer, lung canc...