What is a Feistel network and what is its purpose?
What will be an ideal response?
A Feistel network is a symmetric block cipher that is the basis of several symmetric encryption algorithms. A Feistel network's purpose is to obscure the relationship between ciphertext and keys (a shortcoming of symmetric algorithms).
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Which of the following forces you to enter the phone number in a consistent manner in the database table?
A) Input mask B) Default value C) Lookup list D) Validation rule
The university you work for allows students to purchase items over the intranet using student ID cards that can be loaded with credits. Recently some students got the system to put unearned credits on their cards. The security team wants to use a protocol analyzer to address this issue. How could such software be useful in this scenario?
A. to fuzz the application for errors B. to reverse engineer the transaction systems protocol C. to block transactions from specific students D. to create a honeypot to lure and identify the guilty students