A resource allocation policy in which no request for scheduling is rejected. Consequently, no level of service is guaranteed.
A QoS class in which no specific traffic parameters and no absolute guarantee are provided. Best effort includes UBR and ABR.
A phrase taken from Federal Election Commission regulations used by candidates' campaign committees to excuse their failure to provide the FEC with complete disclosure information concerning their contributors. For example, when only the name and address but not the employer or occupation of a contributor is given on a campaign finance form, the words "best effort" will sometimes be written in. Some states require candidates to return checks to contributors if sufficient disclosure information is not provided.
Connection speeds are not guaranteed. They will depend on many factors including conditions on the Internet at any given time. Although there are no throughput guarantees, everything will be done to provide the fastest connection conditions will allow.