The advantages of （） include better accuracy, customer service, precise control of transportation and data analysis capabilities to anyone capable of using the virtual database.

A:GPS B:Information system C:Virtual warehousing D:Communication system

Frame Relay is simplified form of (51) , similar in principle to (52) , in which synchronous, frames of data are routed to different destinations depending on header information.
Packets are routed throught one or more Virtual Circuits known as (53) . Most Virtual Circuits are (54) , which means that the network provider sets up all DLCI connections at subscription time. (55) are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

A:Permanent Circuits B:Permanent Virtual Circuits C:Switched Virtual Circuits D:Switched Circuits

Frame Relay is simplified form of （） ,similar in principle to （） , in which synchronous, frames of data are routed to different destinations depending on header information. Packets are routed throught one or more Virtual Circuits known as （） . Most Virtual Circuits are （） ,which means that the network provider sets up all DLCI connections at subscription time. （） are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

Most Virtual Circuits are （）

A:Permanent Circuits B:Permanent Virtual Circuits C:Switched Virtual Circuits D:Switching Circuits

Frame Relay is simplified form of （） ,similar in principle to （） , in which synchronous, frames of data are routed to different destinations depending on header information. Packets are routed throught one or more Virtual Circuits known as （） . Most Virtual Circuits are （） ,which means that the network provider sets up all DLCI connections at subscription time. （） are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

（）are also part of the Frame Relay specification.

A:Permanent Circuits B:Permanent Virtual Circuits C:Switched Virtual Circuits D:Switched Circuits

Frame Relay is simplified form of (1) , similar in principle to (2) , in which synchronous, frames of data are routed to different destinations depending on header information.
Packets are routed throught one or more Virtual Circuits known as (3) Most Virtual Circuits are (4) , which means that the network provider sets up all DLCI connections at subscription time. (5) are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

5（）

A:Permanent Circuits B:Permanent Virtual Circuits C:Switched Virtual Circuits D:Switched Circuits

Frame Relay is simplified form of (71) , similar in principle to (72) , in which synchronous, frames of data are routed to different destinations depending on header information . Packets are routed throught one or more Virtual Circuits known as (73) . Most Virtual Circuits are (74) ,which means that the network provider sets up all DLCI connections at subscription time. (75) are also part of the Frame Relay specification . They privide a link that only lasts only as long as the session.

A:Permanent Circuits B:Permanent Virtual Circuits C:Switched Virtual Circuits D:Switching Circuits

Frame Relay is simplified form of （） ,similar in principle to （） , in which synchronous, frames of data are routed to different destinations depending on header information. Packets are routed throught one or more Virtual Circuits known as （） . Most Virtual Circuits are （） ,which means that the network provider sets up all DLCI connections at subscription time. （） are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

Most Virtual Circuits are （） ,which means that the network provider sets up all DLCI connections at subscription time.

A:Permanent Circuits B:Permanent Virtual Circuits C:Switched Virtual Circuits D:Switching Circuits

Frame Relay is simplified form of （） , similar in principle to （） , in which synchronous, frames of data are routed to different destinations depending on header information.
Packets are routed throught one or more Virtual Circuits known as （） Most Virtual Circuits are （） , which means that the network provider sets up all DLCI connections at subscription time. （） are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

Most Virtual Circuits are （）

A:Permanent Circuits B:Permanent Virtual Circuits C:Switched Virtual Circuits D:Switching Circuits

Frame Relay is simplified form of （） , similar in principle to （） , in which synchronous, frames of data are routed to different destinations depending on header information.
Packets are routed throught one or more Virtual Circuits known as （） Most Virtual Circuits are （） , which means that the network provider sets up all DLCI connections at subscription time. （） are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

（） are also part of the Frame Relay specification.

A:Permanent Circuits B:Permanent Virtual Circuits C:Switched Virtual Circuits D:Switched Circuits