A type of memory utilization available on Intel 80286 and later model microprocessors. In protected mode, these processors provide the following features:
protection: Each programcan be allocated a certain section of memory. Other programs cannot use this memory, so each program is protected from interference from other programs.
extended memory : Enables a single program to accessmore than 640K of memory.
virtual memory : Expands the address spaceto over 1GB.
multitasking : Enables the microprocessor to switch from one program to another so the computer can execute several programs at once.
Although the DOS operating system is not designed to take advantage of these features, some DOS programs can run in protected mode using special drivers. More sophisticated operating system, such as OS/2, Windows, or UNIX, have built-in support for protected mode.
An agreed-upon format for transmitting data between two devices. The protocol determines the following: the type of error checking to be used data compression method, if any how the sending device will indicate that it has finished sending a message how the receiving device will indicate that it has received a message There are a […]
- protocol stack
A set of network protocol layers that work together. The OSI Reference Model that defines seven protocol layers is often called a stack, as is the set of TCP/IP protocols that define communication over the internet. The term stack also refers to the actual software that processes the protocols. So, for example, programmers sometimes talk […]
1) An original type, form, or instance serving as a basis or standard for later stages. 2) An original, full-scale, and usually working model of a new product or new version of an existing product. 3) An early, typical example.
(n.) (1) The process of providing users with access to data and technology resources. The term typically is used in reference to enterprise-level resource management. Provisioning can be thought of as a combination of the duties of the human resources and IT departments in an enterprise, where (1) users are given access to data repositories […]
- proximity operator
A type of operator used by some search engines to improve search constraints by instructing the search to look for words that are within a short distance of each other in a document. For example, using a search engine that supports proximity operators, querying the phrase “cable NEAR modem” will instruct the search engine to […]