Interview Questions - Networking

Series of interface points that allow other computers to communicate with the other layers of network protocol stack.

The function of PAD (Packet Assembler Disassembler) is described in a document known as X.3. The standard protocol has been defined between the terminal and the PAD, called X.28; another standard protocol exists between hte PAD and the network, called X.29. Together, these three recommendations are often called "triple X".

Frame relay is a packet switching technology. It will operate in the data link layer.

Telnet is also called as terminal emulation. It belongs to application layer.