Information Security model exam

Which of the following is a primary reason why organizations need information security?

• To improve the speed of internet connectivity

• To ensure the confidentiality, integrity, and availability of data

• To reduce the cost of computer hardware

• To eliminate the need for physical security measures

Which principle of security ensures that data has not been altered or tampered with?

• Confidentiality

• Integrity

• Non-repudiation

• Authentication

Which security principle guarantees that the sender of a message cannot deny sending it later?

• Confidentiality

• Integrity

• Non-repudiation

• Availability

Which type of attack involves unauthorized individuals secretly monitoring communications or data?

• Active attack

• Passive attack

• Polymorphic virus

• Trojan horse

Which of the following is not a characteristic of a computer virus?

• It can replicate itself.

• It requires user intervention to spread.

• It operates independently without a host file.

• It can attach itself to executable programs.

Which term best describes the study and practice of hiding messages?

• Cryptanalysis

• Steganography

• Cryptography

• Authentication

Which of the following statements is true about a Trojan horse?

• It self-replicates across networks.

• It appears to perform legitimate tasks but executes malicious activities.

• It is a type of active wiretapping device.

• It primarily encrypts data for ransom.

In cryptography, what is the main purpose of encryption?

• To compress data for faster transmission

• To obscure the meaning of data for unauthorized users

• To increase the file size before sending

• To create an exact duplicate of the data

Which of the following is a key concept of Kirchhoff's principle in cryptography?

• A cipher should rely on secret algorithms

• The security of a cipher must not depend on its key

• The same key is used by both sender and receiver

• The algorithm must be changed frequently

A stream cipher typically encrypts data

• One bit or byte at a time

• Only when the file is fully received

• In large fixed-size blocks

• Using a complex steganographic scheme