26) What is Data Flow Diagram? 

A modeling notation that represents a functional decomposition of a system. 

27) What is Data Driven Testing? 

Testing in which the action of a test case is parameterized by externally defined data values, maintained as a file or spreadsheet. A common technique in Automated Testing. 

28) What is Dependency Testing? 

Examines an application s requirements for pre-existing software, initial states and configuration in order to maintain proper functionality. 

29) What is Depth Testing? 

A test that exercises a feature of a product in full detail. 

30) What is Dynamic Testing? 

Testing software through executing it. See also Static Testing. 

31) What is Emulator? 

A device, computer program, or system that accepts the same inputs and produces the same outputs as a given system. 

32) What is Endurance Testing? 

Checks for memory leaks or other problems that may occur with prolonged execution. 

33) What is End-to-End testing? 

Testing a complete application environment in a situation that mimics real-world use, such as interacting with a database, using network communications, or interacting with other hardware, applications, or systems if appropriate. 

34) What is Equivalence Class? 

A portion of a component s input or output domains for which the component s behaviour is assumed to be the same from the component s specification. 

35) What is Equivalence Partitioning? 

A test case design technique for a component in which test cases are designed to execute representatives from equivalence classes. 

36) What is Exhaustive Testing? 

Testing which covers all combinations of input values and preconditions for an element of the Software under test. 

37) What is Functional Decomposition? 

A technique used during planning, analysis and design; creates a functional hierarchy for the software. 

38) What is Functional Specification? 

A document that describes in detail the characteristics of the product with regard to its intended features. 

39) What is Functional Testing? 

Testing the features and operational behavior of a product to ensure they correspond to its specifications. 

Testing that ignores the internal mechanism of a system or component and focuses solely on the outputs generated in response to selected inputs and execution conditions. 

See also What is Black Box Testing. 

40) What is Glass Box Testing? 

A synonym for White Box Testing.

41) What is Acceptance Testing?

Testing conducted to enable a user/customer to determine whether to accept a software product. Normally performed to validate the Software meets a set of agreed acceptance criteria. 

42) What is Accessibility Testing? 

Verifying a product is accessible to the people having disabilities (deaf, blind, mentally disabled etc.). Replica Gucci Handbags

43) What is Ad Hoc Testing? 
A testing phase where the tester tries to  break  the system by randomly trying the system s functionality. Can include negative testing as well. See also Monkey Testing. 

44) What is Agile Testing? 

Testing practice for projects using agile methodologies, treating development as the customer of testing and emphasizing a test-first design paradigm. See also Test Driven Development. 

45) What is Application Binary Interface (ABI)? 

A specification defining requirements for portability of applications in binary forms across defferent system platforms and environments. 

46) What is Application Programming Interface (API)? 

A formalized set of software calls and routines that can be referenced by an application program in order to access supporting system or network services. 

47) What is Automated Software Quality (ASQ)? 

The use of software tools, such as automated testing tools, to improve software quality. 

48) What is Automated Testing? 

Testing employing software tools which execute tests without manual intervention. Can be applied in GUI, performance, API, etc. testing. 

The use of software to control the execution of tests, the comparison of actual outcomes to predicted outcomes, the setting up of test preconditions, and other test control and test reporting functions. 

49) What is Backus-Naur Form? 

A metalanguage used to formally describe the syntax of a language. 

50) What is Basic Block? 

A sequence of one or more consecutive, executable statements containing no branches.