How Computers Communicate in a Network | Google IT Support Certificate
Google Career Certificates・2 minutes read
Victor Escobedo, a corporate operations engineer at Google, stresses the importance of networking skills, layered models, and protocols in computer networking. He highlights the significance of understanding how different layers and protocols work together to ensure proper communication and data transfer in networks.
Insights
- Understanding layered models like the TCP/IP five-layer model and the OSI model is crucial in comprehending computer networking, as they facilitate data transfer through protocols at each layer.
- Fiber optic cables, while more expensive and fragile than copper cables, offer advantages such as quicker data transport over longer distances, making them ideal for environments with electromagnetic interference and high-speed requirements.
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Recent questions
What are the essential layers in computer networking?
The essential layers in computer networking include the physical layer, data link layer, network layer, transport layer, and application layer. Each layer plays a crucial role in facilitating communication between devices and ensuring data transfer across networks.
How do fiber optic cables differ from copper cables?
Fiber optic cables transport data using light beams through glass tubes, while copper cables use electrical voltages. Fiber cables are more expensive and fragile but can transmit data faster and over longer distances compared to copper cables.
What is the role of routers in computer networking?
Routers operate at layer 3 of the OSI model and forward data between independent networks. Core routers form the backbone of the internet, facilitating communication between different networks and ensuring internet connectivity.
Why are hubs less common in modern network setups?
Hubs allow connections from multiple computers simultaneously, causing noise and collisions on the network. Due to their limitations in network communications, switches have largely replaced hubs in modern setups to reduce collisions and increase throughput.
How do switches differ from hubs in networking?
Switches can inspect data and send it only to the intended system, reducing collisions and increasing throughput compared to hubs. Unlike hubs, switches play a crucial role in directing data traffic efficiently within a network.
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