Computer Networking
What is the main difference between DDCMP and SDLG?

SDLC has a IP address
DDCMP has a message header
SDLC does not use CRC
DDCMP does not need special hardware to final the beginning of a message.
None of these

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Computer Networking
How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates?

Configure a separate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface.
Configure many subinterfaces in the same subnet.
Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.
Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.

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Computer Networking
The difference between a multiplexer and a statistical multiplexer is

Multiplexers often waste the output link capacity while statistical multiplexers optimize its use
None of these
Statistical multiplexers need buffers while multiplexers do not need buffers
Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol
Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)

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