Term 181
Data security
Data security is the practice of protecting digital information from unauthorized access, corruption, or theft throughout its lifecycle.
Term 181
Data security is the practice of protecting digital information from unauthorized access, corruption, or theft throughout its lifecycle.
Term 182
A Data VLAN is a virtual local area network configured on a switch to carry user-generated traffic, separating it from management, voice, or other types of network traffic.
Term 183
A configuration in IT systems where security services or appliances operate in an isolated, single-purpose environment to prevent interference with other functions and reduce attack surface.
Term 184
A default gateway is a network device, typically a router, that acts as the exit point for traffic from a local network to other networks, including the internet.
Term 185
A default route is a catch-all routing entry that tells a network device where to send packets when no specific route matches the destination address.
Term 186
The Default VLAN is VLAN 1 on most Cisco switches and it is the VLAN to which all switch ports belong by default until they are assigned to a different VLAN.
Term 187
Microsoft Defender for Cloud is a cloud security posture management (CSPM) and cloud workload protection platform (CWPP) that provides unified security management and threat protection across hybrid and multi-cloud environments.
Term 188
Defender for Cloud Apps is a Microsoft cloud access security broker (CASB) that helps you discover, protect, and govern your cloud applications and data across multiple cloud environments.
Term 189
A Defender policy is a set of security rules configured in Microsoft 365 Defender that controls how endpoint detection and response (EDR), antivirus, firewall, and other protection features behave on managed devices.
Term 190
A deployment slot is a live staging environment in Azure App Service that allows you to swap app versions with zero downtime for testing before going to production.
Term 191
A router elected in an OSPF multi-access network to manage link-state updates and reduce routing protocol traffic.
Term 192
Desired State Configuration is a management platform that lets IT pros define and enforce the target configuration state of systems, using declarative scripts to automate deployment, compliance, and ongoing drift correction.
Term 193
Device compliance is the process of ensuring that a device meets an organization's security and configuration policies before it can access network resources.
Term 194
Device risk is the chance that a computer, phone, or other endpoint could cause a security problem or data leak because it is not properly managed or protected.
Term 195
Dynamic Host Configuration Protocol (DHCP) automatically assigns IP addresses and network settings to devices on a network, so they can communicate without manual configuration.
Term 196
A DHCP pool is a reserved set of IP addresses that a DHCP server can assign to devices on a network automatically when they request a connection.
Term 197
A network device or feature that forwards DHCP broadcast messages between clients and servers on different subnets so that IP address assignment works across multiple network segments without a separate DHCP server on each one.
Term 198
A DHCP server is a network device or service that automatically assigns IP addresses and other network configuration parameters to devices on a network, eliminating the need for manual configuration.
Term 199
DHCP snooping is a network security feature that filters untrusted DHCP messages to prevent rogue DHCP servers from giving out false IP addresses.
Term 200
A Diagnostic setting is a configuration in Azure that controls where and how resource logs and metrics are collected, stored, and streamed for monitoring and analysis.
Term 201
A digital certificate is an electronic document that verifies the identity of a person, device, or website and enables secure encrypted communication over the internet.
Term 202
Disk encryption is the process of converting data on a storage device into a coded form that can only be read with the correct decryption key, protecting it from unauthorized access.
Term 203
Disk storage is the hardware or cloud-based service that persistently saves digital data on spinning magnetic platters or solid-state memory for a computer or server to use.
Term 204
A DLP policy is a set of rules that an organization uses to prevent sensitive data from being lost, stolen, or accidentally exposed, whether it is in use, in motion, or at rest.
Term 205
DNS is the system that translates human-friendly domain names like example.com into machine-readable IP addresses so computers can find each other on a network.
Term 206
A DNS log is a record of all Domain Name System queries and responses that pass through a server, providing a trail of which domains were requested, by whom, and when.
Term 207
DNS poisoning is a cyberattack that corrupts a DNS resolver's cache with false information, redirecting users to malicious websites without their knowledge.
Term 208
A DNS record is a set of instructions stored on a DNS server that tells clients how to interact with a domain, most commonly by mapping a human-readable domain name to an IP address.
Term 209
A DNS zone is a distinct part of the global Domain Name System (DNS) namespace that is delegated to a specific administrator or organization for management, containing resource records for a domain.
Term 210
Dynamic ARP Inspection is a security feature that validates ARP packets on a network to prevent man-in-the-middle attacks by ensuring that only legitimate ARP messages are forwarded.