Circuit Switching: (Virtual) circuit established at beginning of session , Uses a dedicated channel - circuit remains unchanged for duration of session , All packets sent through same switches , No routing overhead , All packets arrive in order (they were sent) , Packets are not stored/queued (for any length of time) at switches , Predictable delays , Packet Switching: Packets do not necessarily travel through same switches , Can change route from packet to packet , Packets can arrive out of order , Queuing takes place at switches (packets can be stored for some time), involve unpredictable delays ,

Circuit Switching Vs. Packet Switching

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