Helping Hand Questions for CV0-003

B. Deduplication and D. Compression are the two options that the architect can use to provide more space without adding more capacity. Deduplication is the process of eliminating duplicate copies of data that are stored in different locations, thus reducing the storage consumption and costs1. Compression is the process of reducing the size of data by applying algorithms that remove redundant or unnecessary information, thus saving storage space and bandwidth2. Both deduplication and compression can improve the efficiency and performance of cloud storage solutions12.

Implementing MFA (multi-factor authentication) and limiting failed log-in requests are two effective ways to prevent brute-force attacks on an OS. MFA requires users to provide more than one piece of evidence to prove their identity, such as a password and a code sent to their phone. This makes it harder for attackers to guess the correct credentials. Limiting failed log-in requests prevents attackers from trying too many password combinations in a short time, by locking out the account or the IP address after a certain number of attempts. This slows down the attack and alerts the administrator of a possible intrusion. References: How To Prevent Brute Force Attacks With 8 Easy Tactics, Blocking Brute Force Attacks

SR-IOV stands for Single Root I/O Virtualization, which is a technology that allows a physical network adapter to be partitioned into multiple virtual functions (VFs) that can be directly assigned to virtual machines (VMs). This way, the network traffic bypasses the software layer of the hypervisor and the virtual switch, and goes directly from the VM to the physical adapter. This reduces the CPU overhead, the network latency, and the packet loss, and improves the network throughput and scalability. SR-IOV can achieve near-native performance for network-intensive applications, such as an integration application that communicates between different application and database servers. By enabling SR-IOV capability on the physical server and the virtual server, the P2V migration can maintain the same level of network throughput and latency as the original physical machine. References: High performance network virtualization with SR-IOV; Supercharge Your Network Throughput via Single Root I/O Virtualization (SR-IOV); Overview of Single Root I/O Virtualization (SR-IOV).

Detailed Explanation:

B. Autoscaling with load balancing: Autoscaling adjusts resources based on demand, ensuring that unused compute capacity is released, reducing costs. Load balancing distributes traffic, preventing resource overuse.

References:

CompTIA Cloud+ CV0-003 Study Guide Chapter 18: Optimizing Cloud Environments​​.