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What is it called when only one PDU can cross a wire in each direction at any given time?
Wiki User
∙ 10y ago
LLC in LAN Technologies (4)
LLC protocol - HDLC protocol
Type 3 of operation
- each transmitted PDU is acknowledged:
- a new unnumbered PDU is defined: Acknowledge Connectionless (AC) PDU
- user data are sent in AC command PDUs an must be ack using an AC response PDU.
- to guard against the lost PDUs, a 1-bit sequence number is used: the sender alternates 0 and 1…
- only one PDU in each direction may be outstanding at any time
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∙ 10y ago
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