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Ensuring security in corporate environments

seguridad-ti-vpn-ztna-sdpDue to the radical change in the way we work in IT caused by COVID-19, communications and IT professionals and administrators have been forced to implement or improve necessary mechanisms to ensure security in corporate environments while maintaining their availability for users working from home or anywhere.

 

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Interpreting manufacturers’ datasheets

datasheetsWe’ve all heard the phrase that timing is everything. Nowadays, the buses that connect, for example, processors to main memory require very precise timing, in the order of tenths of nanoseconds. Manufacturers provide all this information in their datasheets, but it needs to be combined with the appropriate Input/output Buffer Information Specification (IBIS) models and PCB (printed circuit board) construction characteristics, such as trace impedances, their length, number of loads and their distribution, etc.

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CSMA and media access control

CSMAIf we divide a generic communication system into its most simple parts, we can distinguish four elements: a sender, a receiver, a message to communicate and a medium on which to do so. One of the problems that arises from establishing the communication is access to the medium. When there are multiple users or stations sharing the same communication medium or channel, access control is required to avoid two or more stations transmitting at the same time, which can cause interference and even make the communication impossible.

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High-speed Internet from space: The Starlink network

SatelliteAccessing the Internet from space is not new, with many companies (OneWeb, Space Norway, Telesat, etc.) now offering it. More recently, however, a new participant has emerged on the scene promising something different – Starlink. SpaceX’s plan is to create a network of 12,000 satellites that fly from 350 to 1160 km above our heads and provide fast Internet access using lasers.

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