Question: Question 23 (1 point) Message Authentication Code is to provide --- and of a message O Confidentiality, integrity O Confidentiality, authenticity O Integrity, authenticity Confidentiality,

and of a message O Confidentiality, integrity O Confidentiality, authenticity O Integrity,

Question 23 (1 point) Message Authentication Code is to provide --- and of a message O Confidentiality, integrity O Confidentiality, authenticity O Integrity, authenticity Confidentiality, availability Question 24 (1 point) You typed the following commands in order. $touch file $chmod 640 file $ls -al file What will be displayed on the monitor for the permission of the file? Question 25 (1 point) The permission of an executable file is set to rws for the owner. What can you deduce from this piece of information? Question 26 (1 point) Suppose that a user runs the command, passwd, on a Linux machine. What will be the value of the effective ID given to the user while the program is running? Question 27 (1 point) A 28-byte file is encrypted with AES-128-CBC. What will be the size of the encrypted file

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