Key Points Protects payload content from unauthorized reading Used in secure communications and transport Often paired with key management and access control Combines data transport with information security Used in satcom, secure networking, and protected data transport Encryption helps preserve…
Key Points Connects different networks or domains May translate protocols or addresses Used in telecom, cloud, and industrial systems Can be physical or logical Acts as a boundary element between separate communication domains Definition Gateway is a device, node, or…
Key Points Enforces one-way data movement between domains Used to separate trusted and less trusted security domains Common in critical infrastructure and industrial security environments Prevents reverse flow of data across security boundaries Operates as a hardware or logical enforcement…
Key Points Connects access layer to core or aggregation infrastructure Carries aggregated traffic from Edge Compute sites and access points Used in mobile networks, broadband systems, enterprise connectivity, and remote service architectures May use fiber, microwave, satellite, or other transport…
Key Points Holdover Timing is defined for network or system use Timing continuity when an external reference is lost Used across network and system environments Holdover quality depends on oscillator stability and the duration of reference loss Cross-industry relevance is…
Key Points Suppresses rapid route churn after failure Used in distance-vector routing protocols Helps prevent transient loops and route flapping Delays acceptance of potentially unstable updates Allows network time to settle after disruption before accepting new routing information Definition Holddown…
Key Points Alignment of system time values across devices or platforms Used to coordinate logging, control, scheduling, and event ordering Operates across telecom, industrial systems, distributed computing, and measurement environments Supports consistent interpretation of when events occurred Definition Time Synchronization…
Key Points Finds shortest path from a source node to all reachable destinations Uses cumulative path cost to expand candidates Applies to routing, path planning, network engineering, and graph optimization problems Requires nonnegative edge weights Produces deterministic, globally optimal paths…
Key Points Software-based deployment model for network functions Replaces or supplements fixed-purpose network appliances with virtualized software functions Functions such as routing, firewalling, and optimization run on virtualized infrastructure Enables flexible deployment, scaling, and orchestration of network capabilities Used in…
Key Points Shares route metrics with neighboring routers Uses hop count as its primary metric Simple routing protocol with limited scale Used mainly in legacy or small networks Limited ability to model complex topologies Slower convergence compared to more advanced…
