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TS-C (NCCT) key terms

TS-C · Get comfortable with the vocabulary.

Agent

A lightweight software component installed on an endpoint that runs checks, collects data, and reports back to a central management server, letting administrators act on devices without manual logins.

Related: Normalization, Health Check
Application Programming Interface (API)

A defined set of rules and endpoints that lets one system request data or trigger actions in another programmatically, so tasks can be automated instead of performed by hand in a user interface.

Related: Provisioning, Secrets Management
Normalization

The process of converting data from different sources into a common format, naming scheme, and scale so records can be compared, searched, and reported on consistently.

Related: Agent, Log Aggregation
Role-Based Access Control (RBAC)

An access model where permissions are attached to roles rather than individual accounts, and users receive permissions by being assigned one or more of those roles.

Related: Least Privilege, Separation of Duties
Least Privilege

The principle of giving each user, service, or process only the permissions needed to do its job, and no more, to limit the impact of mistakes or compromised accounts.

Related: Role-Based Access Control (RBAC), Separation of Duties
Single Sign-On (SSO)

An authentication arrangement in which a user logs in once at a central identity provider and is then granted access to multiple connected applications without signing in again.

Related: Multi-Factor Authentication (MFA), Role-Based Access Control (RBAC)
Capacity Planning

The work of estimating future demand for users, data, and processing so that infrastructure, licensing, and budgets are sized before performance problems or outages occur.

Related: Horizontal Scaling, High Availability (HA)
High Availability (HA)

A design that keeps a service running through component failures by duplicating critical parts, such as servers or database nodes, and automatically failing over between them.

Related: Disaster Recovery, Health Check
Horizontal Scaling

Adding more machines or instances to a system so work is spread across them, as opposed to upgrading a single machine, which is called vertical scaling.

Related: Capacity Planning, High Availability (HA)
Baseline Configuration

A documented, approved set of settings for systems and applications that serves as the reference standard; any deviation from it is treated as a change to be reviewed.

Related: Configuration Drift, Compatibility Matrix
Compatibility Matrix

A table showing which versions of a platform, operating systems, agents, and integrations are supported together, used to avoid unsupported combinations during upgrades and new installs.

Related: Baseline Configuration, Staging Environment
Multi-Tenancy

An architecture in which one instance of an application serves several separate customer organizations, keeping each tenant's data and settings isolated from the others.

Related: Role-Based Access Control (RBAC), Network Segmentation
Network Segmentation

Dividing a network into smaller zones with controlled traffic between them, so a compromise in one zone is less likely to spread and access can be restricted by role.

Related: Multi-Tenancy, Least Privilege
Staging Environment

A near-copy of the production environment used to test installations, upgrades, and configuration changes before they reach live users.

Related: Pilot Deployment, User Acceptance Testing (UAT)
Pilot Deployment

A limited rollout to a small, representative group of users or devices, used to confirm that a change works before it is extended to the whole organization.

Related: Staging Environment, Rollback Plan
Rollback Plan

Documented steps and saved backups that let a team quickly return a system to its previous working state if a deployment or change fails.

Related: Pilot Deployment, Backup and Restore
User Acceptance Testing (UAT)

Testing performed by real users or business owners against agreed requirements to confirm a deployed system supports actual work before it is formally accepted.

Related: Staging Environment, Pilot Deployment
Provisioning

Creating and configuring the accounts, roles, devices, or infrastructure a user or service needs, usually through automation so that setup is repeatable and consistent.

Related: Application Programming Interface (API), Role-Based Access Control (RBAC)
Installation Prerequisites

The conditions that must exist before software can be installed, such as supported operating system versions, free disk space, open ports, certificates, and required accounts.

Related: Compatibility Matrix, Staging Environment
Health Check

An automated probe that confirms a component is running and responsive, often feeding dashboards or triggering alerts and failover when results fall outside expected ranges.

Related: High Availability (HA), Escalation Path
Runbook

A short, step-by-step guide for performing a routine operational task or handling a known incident, written so any trained team member can follow it consistently.

Related: Root Cause Analysis, Escalation Path
Log Aggregation

Collecting log records from many systems into one central store so they can be searched, correlated, retained, and alerted on from a single place.

Related: Audit Trail, Normalization
Root Cause Analysis

A structured investigation that goes beyond the immediate symptom to identify the underlying reason a problem occurred, so a fix prevents recurrence rather than just restoring service.

Related: Runbook, Escalation Path
Patch Management

The repeatable process of identifying, testing, approving, and applying software updates that fix defects and security flaws across systems on a defined schedule.

Related: Baseline Configuration, Configuration Drift
Backup and Restore

Copying data and configurations to a separate location on a schedule, plus the tested procedures for loading those copies back when data is lost or corrupted.

Related: Disaster Recovery, Recovery Point Objective (RPO)
Configuration Drift

The gradual divergence of live system settings from the approved baseline, caused by manual fixes and unrecorded changes, which makes behavior inconsistent and troubleshooting harder.

Related: Baseline Configuration, Patch Management
Escalation Path

A predefined sequence that says who to contact, and in what order, when a problem exceeds a support tier's skill or authority or breaches its response target.

Related: Runbook, Root Cause Analysis
Encryption at Rest

Protecting stored data, on disks, backups, or databases, by encoding it so it is unreadable without the correct key, which limits damage if media is stolen.

Related: Encryption in Transit, Secrets Management
Encryption in Transit

Protecting data while it moves across a network by using encrypted protocols such as TLS, so intercepted traffic cannot be read or altered by an eavesdropper.

Related: Encryption at Rest, Secrets Management
Audit Trail

A tamper-evident record of who did what, when, and from where across a system, kept so activity can be reviewed and evidence produced during investigations or audits.

Related: Log Aggregation, Data Retention Policy
Data Retention Policy

Rules that state how long each category of data must be kept, where it is stored, and when and how it is securely deleted.

Related: Data Classification, Audit Trail
Data Classification

Assigning labels such as public, internal, confidential, or restricted to data so handling, access, and protection requirements match the sensitivity of the information.

Related: Data Retention Policy, Least Privilege
Separation of Duties

Splitting sensitive tasks among different people so that no single account can both make and approve a high-risk change, reducing fraud and accidental misuse.

Related: Least Privilege, Role-Based Access Control (RBAC)
Secrets Management

Storing passwords, API keys, and certificates in a protected vault with controlled access and rotation, rather than embedding them in scripts or configuration files.

Related: Encryption at Rest, Application Programming Interface (API)
Multi-Factor Authentication (MFA)

Requiring two or more independent proofs of identity, such as a password plus a code from a phone, so a stolen password alone is not enough to sign in.

Related: Single Sign-On (SSO), Least Privilege
Disaster Recovery

The plans, backups, and alternate infrastructure that let an organization restore critical services after a major outage, along with targets for how fast and how complete recovery must be.

Related: Recovery Time Objective (RTO), Backup and Restore
Recovery Time Objective (RTO)

The maximum acceptable time a service can be unavailable after a disruption, used to set recovery priorities and justify standby infrastructure or staffing.

Related: Disaster Recovery, Recovery Point Objective (RPO)
Recovery Point Objective (RPO)

The maximum acceptable amount of data loss measured in time before a disruption, which determines how frequently backups or replication must run.

Related: Disaster Recovery, Backup and Restore