Yes , it’s true. In a known-plaintext attack (kpa), the cryptanalyst can only view a small portion of encrypted data, and he or she has no control over what that data might be.
The attacker also has access to one or more pairs of plaintext/ciphertext in a Known Plaintext Attack (KPA). Specifically, consider the scenario where key and plaintext were used to derive the ciphertext (either of which the attacker is trying to find). The attacker is also aware of what are the locations of the output from key encrypting. That is, the assailant is aware of a pair. They might be familiar with further pairings (obtained with the same key).
A straightforward illustration would be if the unencrypted messages had a set expiration date after which they would become publicly available. such as the location of a planned public event. The coordinates are encrypted and kept secret prior to the event. But when the incident occurs, the attacker has discovered the value of the coordinates /plaintext while the coordinates were decrypted (without knowing the key).
In general, a cipher is easier to break the more plaintext/ciphertext pairs that are known.
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The default value at which a refresh interval (an interval a sec. server check for zone updates) is 15 minutes.
If this value is increased, the network traffic is reduced. In the eventuality that the refresh interval expires, the secondary zone will contact the primary zone and request it to initiate the zone transfer.
Solution:
In the game Singularity, broken objects can be restored to their original condition by reversing time. This is an example of which time element of player adjustment.
Thus the required answer is player adjusted.
