Carol is a new employee at ApTech Sol Inc., and she has been allocated a laptop to fulfill his job activities.
Carol tried to install certain applications on the company's laptop but could not complete the installation as she requires administrator privileges to initiate the installation process. The administrator imposed an access policy on the company's laptop that only users with administrator privileges have installation rights.
Identify the access control model demonstrated in the above scenario.
Alice was working on her major project; she saved all her confidential files and locked her laptop. Bob wanted to access Alice's laptop for his personal use but was unable to access the laptop due to biometric authentication.
Which of the following network defense approaches was employed by Alice on her laptop?
The network defense approach that was employed by Alice on her laptop was the preventive approach. The preventive approach aims to stop or deter potential attacks before they happen by implementing security measures that reduce the attack surface and increase the difficulty of exploitation. Biometric authentication is an example of a preventive measure that uses a physical characteristic, such as a fingerprint, iris, or face, to verify the identity of the user and grant access to the device or system. Biometric authentication is more secure than traditional methods, such as passwords or PINs, because it is harder to forge, guess, or steal. By locking her laptop and using biometric authentication, Alice prevented Bob from accessing her laptop and her confidential files without her permission. Reference:
Network Defense Essentials Courseware, EC-Council, 2020, pp. 1-7 to 1-8
What is Biometric Authentication?, Norton, July 29, 2020
An introduction to network defense basics, Enable Sysadmin, November 26, 2019
John, from a remote location, was monitoring his bedridden grandfather's health condition at his home. John has placed a smart wearable ECG on his grandfather's wrist so that he can receive alerts to his mobile phone and can keep a track over his grandfather's health condition periodically.
Which of the following types of loT communication model was demonstrated in the above scenario?
A device-to-cloud model is a type of IoT communication model that connects the IoT devices directly to the cloud platform, where the data is stored, processed, and analyzed. The device-to-cloud model enables remote access, real-time monitoring, and scalability of IoT applications. The device-to-cloud model requires the IoT devices to have internet connectivity and cloud compatibility. In the above scenario, John used a device-to-cloud model to monitor his grandfather's health condition, as he placed a smart wearable ECG on his grandfather's wrist that sent the data to the cloud platform, where John could access it from his mobile phone and receive alerts periodically. Reference:
Communication Models in IoT (Internet of Things) - Section: Device-to-Cloud Model
IoT Communication Models - IoTbyHVM - Section: Device to Cloud Communication Model
Which of the following algorithms is an iterated block cipher that works by repeating the defined steps multiple times and has a 128-bit block size, having key sizes of 128, 192, and 256 bits?
AES (Advanced Encryption Standard) is an iterated block cipher that works by repeating the defined steps multiple times and has a 128-bit block size, having key sizes of 128, 192, and 256 bits. AES is a symmetric-key algorithm that encrypts and decrypts data using the same secret key. AES operates on a 4x4 matrix of bytes called the state, which undergoes 10, 12, or 14 rounds of transformation depending on the key size. Each round consists of four steps: sub-bytes, shift-rows, mix-columns, and add-round-key. AES is widely used for securing data in various applications and platforms, such as web browsers, VPNs, wireless networks, and smart grids. AES is the algorithm that matches the description given in the question. Reference:
AES - Week 4: Cryptography Techniques
Advanced Encryption Standard (AES) - NIST
AES Encryption and Decryption Online Tool - Code Beautify
Robert, an ISP, was instructed to provide network connectivity to all areas even if some locations are inaccessible to capture direct signals from wireless access points. In this process, Robert used a wireless network component that takes a signal from one access point and boosts its signal strength to create a new network.
Identify the component of the wireless network employed by Robert in the above scenario.
