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IT Terminology Dictionary: Letter H
| Abbreviation | Decoding | Description | Group | Note | Related terms |
|---|---|---|---|---|---|
| HDD | Hard Disk Drive | A device for storing data on magnetic platters. | General | Slow, but with large capacity and an IDE cable. And it also contains neodymium magnets. | |
| HMAC | Hash-based Message Authentication Code | Checks that a message hasn't been altered and came from the correct sender. | Security | Like a signature for letters. | |
| HR | Human Resources | Human Resources — people who find employees, conduct interviews, and create a comfortable atmosphere in the company. | Personnel Management | HR is like the school psychologist, except they have the power to fire you for bringing sugar-free cookies to work. At the interview they smile and say 'we have a friendly team', and then you get to the open space where every other person sits in headphones staring at the monitor with a face like they dropped production. And only HR knows that everyone just doesn't have time for lunch. | |
| HSM | Hardware Security Module | A device for securely storing and using cryptographic keys. | Security | Like a safe for passwords. | |
| HSRP | Hot Standby Router Protocol | A protocol that ensures routing fault tolerance. | Network & Infrastructure | If the primary router fails, the backup takes over traffic. | |
| HTML | HyperText Markup Language | A markup language that creates the structure of a web page. It's like the skeleton of a website — it defines where the heading goes, where the text goes, and where the picture goes. | Web Development | Without HTML, your website looks like a shopping list on a napkin in a bar — all words in a row, nothing is clear, where's the heading, where's the beer special. With HTML it's at least a restaurant menu — there's structure and order. | |
| HTTP | Hypertext Transfer Protocol | A protocol for exchanging data on the internet. | Network & Infrastructure | Without it, you wouldn't be reading this text. | HTTP |
| HTTPS | Hypertext Transfer Protocol Secure | HTTP with encryption. | Network & Infrastructure | So no one can eavesdrop on your traffic when you enter your login and password on a website. |
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