Module 6 quiz
Which of the following statements describe a quantum computer?
A quantum computer is a computer that relies on qubits that can be both 0 and 1 at the same time.
Wilson has requested your help to suggest an encryption method that will provide the highest security against attacks. Which encryption process should you suggest?
AES
John needs to add an algorithm for his company communication process, in which encryption uses two keys. One is the public key, and the other one is a private key. Which algorithm will be suitable to achieve this?
Asymmetric cryptographic
A new e-commerce startup with global operations is looking for a method to manage its supply-chain data for production. Instead of using bar codes, scanners, paper forms, and individual databases, making the system difficult to use, which method should be used to quickly track shipments?
Blockchain
Wireless data networks are particularly susceptible to which type of attack?
Ciphertext attack
ABC Enterprise is a global operation. As such, it needs to send regular, confidential messages and data between offices to communicate important market information, employee decisions, financial decisions, etc., for management consideration and senior-level decision making. Since these decisions impact the local employees and global businesses, they suspect that the data may be prone to attacks from threat actors internally and externally. While one of the senior systems administrators suggested implementing steganography to achieve this objective, the IT Department head at another branch suggested implementing cryptography. The management team has now called you for expert advice to select the best method to implement in the enterprise. What should your advice be, and why?
Cryptography should be implemented because it allows information to be viewed only by authorized users and checks whether the information has been altered or changed by anybody. It also makes the information unclear, even if other users see it. Cryptography is a more advanced technology than steganography. These features make cryptography the right choice for the enterprise to implement.
Which of the following is a state of data, where data is transmitted across a network?
Data in transit
John receives an encrypted document using asymmetric cryptography from Alex. Which process should Alex use along with asymmetric cryptography so that John can be sure that the received document is real, from Alex, and unaltered?
Digital signature algorithm
Spectrum Technologies uses SHA-256 to share confidential information. The enterprise reported a breach of confidential data by a threat actor. You are asked to verify the cause of the attack that occurred despite implementing secure cryptography in communication. Which type of attack should you consider first, and why?
Misconfiguration attack; the company should have configured a higher security hash algorithm rather than using the less-secure SHA-256.
Which feature of cryptography is used to prove a user's identity and prevent an individual from fraudulently reneging on an action?
Nonrepudiation
Which characteristic of cryptography makes information obscure or unclear, and by which the original information becomes impossible to be determined?
Obfuscation
Which of the following is used to create a sequence of numbers whose output is close to a random number?
PRNG
Which function in cryptography takes a string of any length as input and returns a string of any requested variable length?
Sponge
Which algorithm encrypts and decrypts data using the same key?
Symmetric cryptographic algorithm
Alex is working for Alpha Technology as a system administrator. The enterprise's sales team uses multiple external drives, often containing confidential data, that they carry between their offices and their clients' offices. What should Alex do to ensure that data is secure if it is stolen or lost, and why?
Use encrypted USBs in the enterprise because they automatically encrypt the information and give Alex remote access to the drive to monitor and disable the user.
