CLO-002 Exam Dumps : CompTIA Cloud Essentials+

 Hardening is the concept that will help lower the attack surface after unauthorized user-level access. Hardening is the process of securing a system by reducing its vulnerability to attacks. Hardening involves applying patches, updates, and configuration changes to eliminate or mitigate known weaknesses. Hardening also involves disabling or removing unnecessary services, features, and accounts that could be exploited by attackers. Hardening can help lower the attack surface by reducing the amount of code running, the number of entry points available, and the potential damage that can be caused by unauthorized access. References: CompTIA Cloud Essentials+ CLO-002 Study Guide, Chapter 4: Cloud Security, Section 4.2: Cloud Security Concepts, Page 153.

Backup and recovery of data is considered a concept of availability, which is one of the three pillars of information security, along with confidentiality and integrity. Availability means that data and systems are accessible and usable by authorized users when needed. Backup and recovery of data ensures that data can be restored in case of loss, corruption, or disaster, and that business operations can continue or resume with minimal downtime. Cloud backup and recovery involves creating and storing copies of data in a secondary, offsite storage location, and using the copies to restore the original data in the event of data loss1. Cloud backup and recovery offers many benefits, such as scalability, cost-effectiveness, reliability, and automation234. References: Cloud Essentials+ CLO-002 Study Guide, Chapter 2: Cloud Concepts, Section 2.3: Explain aspects of IT security in the cloud, p. 47. Backup And Disaster Recovery | Google CloudHow does backup and data recovery work in the Cloud? - Devoteam G CloudData Recovery Explained | IBMWhat is Cloud Backup and Recovery | Rackspace Technology

Reserved instances are a discount billing concept in which businesses can obtain significant discounts compared to standard on-demand cloud computing prices in return for committing to a specified level of usage1. Reserved instances are not physical instances, but rather a billing discount applied to the use of on-demand instances in the account2. Reserved instances can save up to 75% over equivalent on-demand capacity3. By switching the virtual machines to reserved instances, the analyst can best reduce costs without impacting performance, as long as the application’s usage pattern is predictable and consistent. Decommissioning a virtual machine might affect the performance and availability of the application. Changing to a pay-as-you-go plan might not reduce costs if the application’s usage is high and stable. Converting the application to a SaaS solution might require additional development and migration efforts, which are not feasible in this scenario. References:

• 1: AWS Cost Management & Optimization
• 2: Amazon Elastic Compute Cloud
• 3: VMware Aria Cost powered by CloudHealth