Every object is assigned a serial number on the stream.What might be the result if the same object is saved twice?
A)A performance decrease.
B)Running out of serial numbers.
C)The object will have two serial numbers.
D)Only the serial number is written out the second time.

Question

Quizplus · Accepted Answer

When an object is saved twice in a serialization process, the serialization mechanism does not save the entire object again. Instead, it saves a reference to the previously serialized object, effectively only writing out the serial number or a reference to it the second time. This avoids duplication and saves space.

Every Object Is Assigned a Serial Number on the Stream