單項(xiàng)選擇題Which description about asymmetric encryption algorithms is correct?()

A.They use the same key for encryption and decryption of data.
B.They use different keys for decryption but the same key for encryption of data.
C.They use different keys for encryption and decryption of data.
D.They use the same key for decryption but different keys for encryption of data.


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A.pre-shared key
B.integrity check value
C.XAUTH
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Which description is correct based on the exhibit and partial configuration?()

A.All traffic destined for network 172.16.150.0 will be denied due to the implicit denyall.
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D.This ACL will prevent any host on the Internet from spoofing the inside network address as the sourceaddress for packets coming into the router from the Internet.

3.單項(xiàng)選擇題In a brute-force attack, what percentage of the keyspace must an attacker generally search through until heor she finds the key that decrypts the data?()

A.Roughly 50 percent
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