Question

1. When sending a large set of files, would you use symmetric key encryption or asymmetric key encryption? Why?

2. What is the disadvantage of using a one-time pad cipher?

3. Why are computer racks often not fully equipped?

4. What is the difference between a back-out and a brownout?

Answer 1

Solution:-

Symmentric key encryption uses a single key that needs to be shared among the people who needs to recive the message.While asymmetric key uses pair of public key and private key to encrypt and decrypt the message.

1)Answer:-

They asked that in seding a large set of file then which encyption will use symmetric key or asymmetric key.

So considering the above question i use asymmetric key encryption.Becuase asymmetric key encryption is more secure than symmetric key encruption.When message is encrypt using public key it can only decrypt by using private key.However the message is can encrypt using public key,it can only be decrypt using private key.In asymmetric key encryption there are two keys private key and public key.the reciver first transmit the public key to the sender.the sender uses piblic key to encrypt the message.The reciver decrypt the message using private key.

2)Answer:-

Computer racks often not fully equipped becuase all computers have not the same size and we canot fit our computer in any of the rack.Different company made computer in different structrure.some time company makes the self rack for computer.so thats why computers racks not fully equipped.

Disadvantage of One time pad cipher:-A disadvantage of the one time pad is that the key is as long as the message and it too must be transmitted security to the recipent before the message can be send another disadvantage is the to generate random key for cipher.

3)Answer:-

4)Answer:-

A brownout is partial,temporary reduction in total system capacity while blackout is complete interruption in power.Blackout is that a brownout is used by an energy provider as an emergency strategy to prevent the system from blackout. A brownout is an intentional or unintentional drop or sag,in voltage in an encrypt grid.It occures in heavy load times.