Module 6 Quiz

Which cryptographic method should Susanne use to ensure that a document can be encrypted with a key and decrypted with a different key?

Asymmetric

Harry works at an automobile parts manufacturer. They sell these parts to retailers and deposit the proceeds in their bank. Using these funds, Harry pays the suppliers and employees. The Accounts Department maintains a ledger of all transactions of materials bought and sold. Similarly, the quality department and operations department also maintain a ledger of all transactions. Over the years, this process has become quite cumbersome, as growing data create confusion. Harry is looking at simplifying the process and has contacted you for a solution. Using which technology can this process be simplified and confusions avoided?

Blockchain

Sigma solutions use hash algorithms in the communications between departments while transferring confidential files. A human resource employee informed you that one of the employees' salary statements sent from her end looks tampered with and requested your help. Which of the following tasks would enable you to identify whether the file is tampered with or not, and how will you make the determination?

Check the digest of the file with the original digest. If the values are different, it can be confirmed that the file has been tampered with.

Which attack sees an attacker attempt to determine the hash function's input strings that produce the same hash result?

Collision attack

Which of the following is a state of data, where data is transmitted across a network?

Data in transit

Alex needs to find a method that can change a single character of plaintext into multiple characters of ciphertext. Which method should Alex use?

Diffusion

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

Which encryption method in BitLocker prevents attackers from accessing data by booting from another OS or placing the hard drive in another computer?

Full disk encryption

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.

A manager working in ABC Consulting shared a list of employees from his team who were eligible for an extra week off. Later, he claimed that he has never shared this list. Which principle or functionality of a secured communication can be used to substantiate or verify the manager's claim?

Nonrepudiation

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 unit is used by quantum computers, making them faster and more efficient than normal computers?

Qubit

Kainat is asked to suggest a cipher in which the entire alphabet is rotated (as in, A=N, B=O), making it difficult to identify. Which cipher should she suggest?

ROT13

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

Which encryption is a chip on the motherboard of a computer that provides cryptographic services?

Trusted platform module

Which encryption device you can use that has the following features? 1. It should allow administrators to remotely prohibit accessing the data on a device until it can verify the user status. 2. It can lock user access completely or even instruct the drive to initiate a self-destruct sequence to destroy all data.

USB device encryption

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.