Fast recovery is used in instances where data needs to be recovered quickly from a backup. Fast recovery can be used in instances where data is lost or corrupted, or in instances where the system needs to be restored to a previous state.
What is fast recovery?
Fast Recovery is now TCP's final advancement. Every time network congestion is identified, the congestion window is reduced to 1 by using solely Fast Retransmit. As a result, reaching high link utilisation again takes some time. Fast Recovery, on the other hand, solves this issue by doing away with the slow-start period. Slow-start will specifically only be used at the start of a connection and once an RTO time has expired. The lack of slow-start after receiving three duplicate ACKs is due to the fact that triple ACKs inform the transmitting side of more than just packet loss. The dup ACK informs the sending side that packet has been missed by the network since the receiving side can only generate one if it gets an out-of-order packet.
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It is the gap between demographics and regions.
Answer:
1)
officeAC = new AirConditioner();
officeAC.turnOn();
2)
officeAC = new AirConditioner();
officeAC.turnOn();
officeAC.setTemp(69);
Explanation:
1)
In the first statement a new object of the class AirConditioner whose reference is assigned to the officeAC. new is a keyword which creates an object of the class.
Next statement uses the method turnOn(). Reference to the new object officeAC is used to invoke this method turnOn().
2) The first two statements works the same as in 1)
The last statement invokes a method setTemp() using the reference variable and passes the value 69 to this method to set the desired temperature.