Roles and Groups
/roʊlz ənd ɡruːps/
noun — “the organizational hats and club memberships that tell a system who can do what.”
Authorization
/ɔːˌθɒr.ɪˌzeɪ.ʃən/
noun — “the system’s way of saying, ‘okay, you’re you… now, what are you allowed to touch?’”
Authentication
/ɔːˌθɛn.tɪ.kəˈeɪ.ʃən/
noun — “the system’s way of asking, ‘are you really you, or just a clever imposter?’”
Identity Management
/aɪˈdɛn.tɪ.ti ˈmæn.ɪdʒ.mənt/
noun — “the system that keeps track of who’s who and what they’re allowed to do without losing their passwords under the couch cushions.”
Unix Permissions
/ˈjuːnɪks pərˈmɪʃənz/
noun — “the classic three-tier access system that decides if you can look, edit, or execute in the land of pipes and terminals.”
Access Control Lists
/ˈæk.sɛs kənˈtroʊl lɪsts/
noun — “the rulebook your system uses to decide who can do what, and who’s politely turned away.”
File Permissions
/faɪl pərˈmɪʃənz/
noun — “the rules that decide who gets to peek, poke, or completely wreck your files.”
Shared Memory
/ʃɛrd ˈmɛm.ə.ri/
noun — “the communal fridge for processes — everyone grabs what they need, but don’t spoil it.”
Shared Memory is a memory segment accessible by multiple processes, allowing them to exchange data quickly without relying on slower inter-process communication methods like pipes or sockets. By mapping the same physical memory into the address space of different processes, Shared Memory enables high-speed, low-latency data sharing for collaborative computation and real-time applications.
Passive Optical Networking
/pɒn/
noun — "one fiber, many users, no powered middlemen."
PON, short for Passive Optical Networking, is a fiber-optic access architecture that delivers broadband services using only passive components between the service provider and end users. Instead of active electronics in the field, a single optical fiber is split to serve multiple customers, reducing cost, power usage, and maintenance complexity.
Fiber to the Home
/ˌɛf.tiː.tiːˈeɪtʃ/
noun — "fiber all the way, no copper excuses."
FTTH, short for Fiber to the Home, is a broadband access architecture in which optical fiber runs directly from a service provider’s core network to an individual residence or business. Unlike hybrid fiber deployments, FTTH eliminates copper entirely in the last mile, delivering data purely over fiber from end to end.