A hot backup is a type of backup mechanism that dynamically backs up the data even if the system or application resources are being used. A hot backup does not require the system or application to be shut down or paused during the backup process, and it allows the users to access the data while the backup is in progress.
A hot backup ensures that the backup is always up to date and consistent with the current state of the data, and it minimizes the downtime and disruption of the system or application services. A hot backup is suitable for systems or applications that have high availability and performance requirements, such as databases, web servers, or email servers. A hot backup is the type of backup mechanism that Clark implemented in the above scenario, as he performed a backup that dynamically backs up the data even if the system or application resources are being used.References:
* Hot Backup- Week 5: Data Security
* Hot Backup vs. Cold Backup: What's the Difference?
* Network Defense Essentials (NDE) | Coursera- Module 5: Data Security

Role-based access control (RBAC) is a model that assigns permissions and privileges to users based on their roles in an organization. In RBAC, the administrator defines the roles and the access rights for each role, and then assigns users to those roles. This way,the administrator can control the access of users to the resources without having to manage each user individually. In the scenario, Carol is assigned a role that does not have the installation rights, while the administrator has a role that does. Therefore, the access control model demonstrated in the scenario is RBAC.References:Network Defense Essentials - EC-Council Learning,Network Defense Essentials (NDE) | Coursera,EC-Council Network Defense Essentials | NDE Certification

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.References:
* AES- Week 4: Cryptography Techniques
* Advanced Encryption Standard (AES)- NIST
* AES Encryption and Decryption Online Tool- Code Beautify

A gateway is a component of IoT architecture that collects data from IoT devices and performs data pre-processing. A gateway acts as a bridge between the IoT devices and the cloud platform, and it can filter, aggregate, compress, encrypt, or transform the data before sending it to the cloud for storage and analysis. A gateway can also perform edge computing, which means processing the data locally and providing real-time feedback or actions. A gateway can support various communication protocols, such as WiFi, Bluetooth, Zigbee, or cellular, and it can enhance the security and reliability of the IoT system.A gateway is the component that matches the description given in the question123

A wireless repeater is a wireless network component that takes a signal from one access point and boosts its signal strength to create a new network. A wireless repeater can extend the range of a wireless network by repeating the signal from the original access point. This way, the wireless repeater can provide network connectivity to areas that are inaccessible to capture direct signals from the access point.In the scenario, Robert used a wireless repeater to provide network connectivity to all areas12.References:Network Defense Essentials - EC-Council Learning,Understanding the Wireless Network Components