Q16: Cryptographic algorithms are based on mathematical algorithms where these algorithms use for a secure transformation of data. a) secret key b) external programs c) add-ons d) secondary key Explain: Q17: An attacker, who is an employee of your firm may to know your system password. a) do peeping b) perform network jamming c) do shoulder surfing d) steal your laptop Explain: Q18: An attacker may use automatic brute forcing tool to compromise your a) username b) employee ID c) system / PC name d) password Explain: Q19: The attacker will use different bots (zombie PCs) to ping your system and the name of the attack is a) Distributed Denial-of-Service (DDoS) b) Permanent Denial-of-Service (PDoS) c) Denial-of-Service (DoS) d) Controlled Denial-of-Service (CDoS)