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Automatic bug fixing is made according to a specification of the expected behavior which can be for instance a formal specification or a test suite. [5]A test-suite – the input/output pairs specify the functionality of the program, possibly captured in assertions can be used as a test oracle to drive the search.
In a "fixes that fail" scenario the encounter of a problem is faced by a corrective action or fix that seems to solve the issue. However, this action leads to some unforeseen consequences. They form then a feedback loop that either worsens the original problem or creates a related one. [2] [3] Fig. 1: Causal loop diagram
A hang can also occur due to the fact that the programmer has incorrect termination conditions for a loop, or, in a co-operative multitasking operating system, forgetting to yield to other tasks. Said differently, many software -related hangs are caused by threads waiting for an event to occur which will never occur. [ 4 ]
The first known computer virus appeared in 1971 and was dubbed the "Creeper virus". [2] This computer virus infected Digital Equipment Corporation's PDP-10 mainframe computers running the TENEX operating system. [3] [4] The Creeper virus was eventually deleted by a program created by Ray Tomlinson and known as "The Reaper". [5]
Ethernet over USB is the use of a USB link as a part of an Ethernet network, resulting in an Ethernet connection over USB (instead of e.g. PCI or PCIe).. USB over Ethernet (also called USB over Network or USB over IP) is a system to share USB-based devices over Ethernet, Wi-Fi, or the Internet, allowing access to devices over a network.
Over time, mass storage access was removed, leaving the Media Transfer Protocol as protocol for USB file transfer, due to its non-exclusive access ability where the computer is able to access the storage without it being locked away from the mobile phone's software for the duration of the connection, and no necessity for common file system ...