Admission control is a term used in computer networking to refer to the process of regulating the number and type of requests that are allowed to access a network resource. The word "admission" is spelled /ædˈmɪʃən/ in IPA transcription, with the stress on the second syllable. "Control" is spelled /kənˈtroʊl/, with the stress on the first syllable. The spelling of "admission control" reflects the pronunciation and stress of these two separate words. Proper use of admission control can help to avoid network congestion and ensure efficient use of resources.
Admission control refers to a process carried out in a system or network, typically in computer networks or telecommunications, to regulate or manage the admission of new users, services, or resources. It involves establishing and enforcing certain rules, criteria, or policies to determine whether a request for access to the system or network can be granted or denied.
In computer networks, admission control is crucial to maintain performance, quality of service (QoS), or security levels. It helps prevent overloading of network resources by allowing access based on predefined limits or thresholds. For example, if a network has a capacity to handle only a certain number of simultaneous connections or bandwidth usage, admission control ensures that additional requests are accepted only if there is adequate capacity available.
Admission control mechanisms can be implemented at different levels, such as at the network layer, transport layer, or application layer, depending on the specific requirements of the system. These mechanisms may involve monitoring and analyzing parameters like network traffic, resource availability, user credentials, or service priorities. Based on the evaluation of these parameters, admission control systems make decisions regarding admitting, rejecting, or manipulating the request.
Overall, admission control serves as a safeguarding mechanism to maintain the efficiency, reliability, and security of a system or network by controlling the introduction of new users, services, or resources in a controlled and regulated manner.
The term "admission control" has its roots in the English language.
The word "admission" originates from the Latin word "admissio", which is derived from the verb "admittere", meaning "to allow entry". In English, "admission" refers to the act of granting access or permission to someone to enter or be a part of something.
The word "control" comes from the Latin word "contrarotulus", which is a combination of "contra" (against) and "rotulus" (a roll or register). In English, "control" means the power or authority to manage, direct, or restrain something.
Therefore, "admission control" refers to the process or mechanism of managing or regulating access, typically to a particular area, system, or resource. It is concerned with allowing or denying entry based on certain criteria or conditions.