23 bits would leave room for 512 node numbers.
        
             
        
        
        
Answer:
The receiver will not detect the error. 
Explanation:
The byte sent by transmitter: 10101010 
The byte received by receiver due to channel noise: 10011010
If you see the bold part of the both sent and received bytes you can see that the number of bits changed is 2. 
The two communicating devices are using a single-bit even parity check. Here there are two changed bits so this error will not be detected as this single bit even parity check scheme has a limit and it detects the error when the value of changed bit is odd but here it is even.
This parity scheme basically works well with the odd number of bit errors.
 
        
             
        
        
        
Answer:
you cannot obtain a new copy of the keys that you have stored on Hardware Security Module, because they are lost forever and a new copy cannot be obtained if a copy is not kept somewhere.
Explanation:
Hardware Security Module (CloudHSM) is a cloud-based hardware security module (HSM) that provides the user the opportunity to create and utilize your own encryption keys on the AWS Cloud. It is a fully managed service that takes care of time-consuming administrative activities such as software patching, backups, hardware provisioning, and high-availability for the user.
One of the key elements of the Hardware Security Module (CloudHSM) is that a copy of the keys stored must be kept somewhere because if keys are lost, they are lost forever and a new copy cannot be obtained if a copy is not kept. 
Therefore, you cannot obtain a new copy of the keys that you have stored on Hardware Security Module, because they are lost forever and a new copy cannot be obtained if a copy is not kept somewhere. 
 
        
             
        
        
        
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