It takes about three and a half hours to travel from Australia to New Zealand.
The way I understand it, .rdl is a server controlled report and .rdlc is a client-side controlled report. You have to deploy an .rdl file to a report server and access it using that server.With a .rdlc report, you can create the report and use a ReportViewer control to run the report in your application.You have to rename .rdlc to .rdl first.). RDL files are fully compatible with the ReportViewer control runtime. However, RDL files do not contain some information that the design-time of the ReportViewer control depends on for automatically generating data-binding code.
HDLC stands for High-Level Data Link Control protocol. Like the two other WAN protocols mentioned in this article, HDLC is a Layer 2 protocol (see OSI Model for more information on Layers). HDLC is a simple protocol used to connect point to point serial devices. For example, you have point to point leased line connecting two locations, in two different cities. HDLC would be the protocol with the least amount of configuration required to connect these two locations. HDLC would be running over the WAN, between the two locations.