Unit 1 Set 3 Terms

Question 1

leased line

Answer 1

A serial communications circuit between two points, provided by some service provider, typically a telephone company (telco). Because the telco does not sell a physical cable between the two endpoints, instead charging a monthly fee for the ability to send bits between the two sites, the service is considered to be a leased service.

Question 2

HDLC

Answer 2

High level data link control. A bit oriented synchronous data-link layer protocol developed by the International Organization for Standardization (ISO)

Question 3

Ethernet over MPLS

Answer 3

A term referring specifically to how a service provider can create an Ethernet WAN service using an MPLS network. More generally, a term referring to Ethernet WAN services.

Question 4

Ethernet Line Service (E-Line)

Answer 4

A specific carrier/metro Ethernet service defined by MEF (MEF.net) that provides a point-to-point topology between two customer devices, much as if the two devices were connected using an Ethernet crossover cable.