HDLC
A great advantage of a VPN is that it provides ____________ communications over _____________ networks.
infrared is limited to (line of sight) communications.
HDLC (High-Level Data Link Control) is a bit-oriented synchronous data link layer protocol cHDLC (Cisco HDLC) was created by cisco to address the HDLC protocol's inability to provide multi-protocol support. Thus, cHDLC frames contain a field for identifying the network protocol being encapsulated. Ethernet networks are packet based and have no concept of a connection or circuit and also lack basic security features By using PPPoE (encapsulation), users can "dial" from one machine to another over an Ethernet network, establish a point to point connection between them and then securely transport data packets over the connection. Answer: security
SAS is SCSI, it connects via a serial cable/connector instead of parallel (long and skinny) connector.
what are the benefits over wired communications
Wireless Communications as they open a more open medium, have the following distinct advantages over wired communications- cheap installation cost, easy installation and user access, high level of mobility and rapid deployment.lity
disk storage-> direct data access storage tape storage -> serial data access storage
The main advantage of ECL over TTL is speed.
It has no advantage.
Federal Communications Commission (FCC)by Kishon Francis (Grenada)
They have an Advantage over Dragon,Grass,Flying and Ground.