The OSI model is a theoretical framework that standardizes network communication into seven distinct layers:
Securing data and resolving connectivity issues are daily tasks for network administrators. Network Security Fundamentals
: Comparing legacy Hard Disk Drives (HDDs) with Solid-State Drives (SSDs).
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[Identify the Problem] -> [Establish a Theory] -> [Test the Theory] ^ | |------------ [Implement Solution] <------------v
Centered around a single person in a single location, often using Bluetooth (e.g., connecting a phone to wireless earbuds). 2. Network Topology
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Used inside local networks and not routable on the public internet: 10.0.0.0 – 10.255.255.255 172.16.0.0 – 172.31.255.255 192.168.0.0 – 192.168.255.255 Subnetting (CIDR)