Dynamic Analysis: A method used in software testing where programs are executed in real-time to identify potential defects or errors. Unlike static analysis, which is performed without running the code, dynamic analysis tests the software's behavior under various conditions and inputs to find issues such as memory leaks, race conditions, or security vulnerabilities. It is an essential part of the quality assurance process, being able to simulate actual operating conditions and user interactions.

Dynamic Application Security Testing (DAST): A security testing method that analyzes a live application in its operating environment to identify vulnerabilities from an external attacker's perspective. This testing focuses on detecting security flaws, misconfigurations, and weaknesses exploitable by malicious actors, and is generally conducted in the later stages of development or in production.

Dynamic Host Configuration Protocol (DHCP): A network management protocol used on IP networks where a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on the network so they can communicate with other IP networks. DHCP eliminates the need for manually assigning IP addresses to all network devices, simplifying the process of connecting devices to the network and managing the allocation of IP addresses within a network.

Dynamic Link Libraries (DLLs): Modular files containing code and data that can be used by multiple applications simultaneously. DLLs allow for code reuse, modularization, and memory efficiency as the same library can serve multiple applications, reducing the need for redundant code. Their misuse or manipulation could lead to potential security vulnerabilities such as DLL hijacking or injection.

Dynamic Packet Filtering: A security measure used in network firewalls to manage the flow of network traffic in real-time. Unlike static packet filtering, which only examines a packet based on predefined rules, dynamic packet filtering evaluates packet information within the context of the packet's state or connection, providing a more adaptive and sophisticated approach to network security.

Dynamic Partitioning: In computing, it's a method of dividing a hard drive or a database into segments that can be easily modified in size. This allows for the efficient use of space and resources by allocating and deallocating partitions as needed, without the need for a static predefined partition size. Dynamic partitioning can improve performance and flexibility for both storage and memory management in operating systems and database management systems. It enables the system to adapt to changing workloads and data requirements dynamically.