CompTIA Updated CV0-003 Exam Questions and Answers by lee

A template is a file that defines the desired state and configuration of a cloud resource, such as a server, a network, or a database. Infrastructure as code (IaC) is the practice of using templates to automate and manage cloud resources, rather than manually configuring them. IaC can help prevent configuration drift, which is the deviation of the actual state of a resource from the desired state defined by the template. In this scenario, the cloud engineer discovers that configurations on DB servers have drifted from the corporate standard baselines after an IaC cloud migration to an IaaS environment. The best way to ensure configurations are restored to the baselines is to utilize a template to automate and update the DB configuration. This way, the cloud engineer can apply the same template to all the DB servers, and ensure they are consistent and compliant with the corporate standards. Creating an image of the DB, deleting the previous DB server, and restoring from the image is not a good solution, as it may cause data loss, downtime, and additional costs. Manually logging in to the DB servers and updating the configurations is not a good solution, as it is time-consuming, error-prone, and not scalable. Renaming and changing the IP of the old DB server and rebuilding a new DB server is not a good solution, as it may cause compatibility issues, network disruptions, and security risks. References: CompTIA Cloud+ CV0-003 Certification Study Guide, Chapter 23, Infrastructure as Code and Configuration Management, page 3691.

The correct answer is C. NTP.

NTP stands for Network Time Protocol, which is a standard protocol for synchronizing the clocks of computers over a network. NTP uses a hierarchical, client-server architecture, where a client requests the current time from a server, and the server responds with a timestamp. The client then adjusts its own clock to match the server’s time, taking into account the network delay and clock drift. NTP can achieve sub-millisecond accuracy over local area networks and a few milliseconds over the internet12.

NTP can help maintain time synchronization between all the resources in a distributed cloud environment, as it allows each resource to get the accurate time from a reliable source. This can help with correlating logs, auditing, security, and other time-sensitive operations. NTP can also handle different time zones, as it uses Coordinated Universal Time (UTC) as the reference time, and each resource can convert UTC to its local time zone12.

DNS stands for Domain Name System, which is a protocol for resolving domain names into IP addresses. DNS does not provide any functionality for time synchronization3.

IPAM stands for IP Address Management, which is a method for planning, tracking, and managing the IP address space used in a network. IPAM does not provide any functionality for time synchronization.

SNMP stands for Simple Network Management Protocol, which is a protocol for collecting and organizing information about managed devices on a network. SNMP can be used to monitor the performance, availability, configuration, and security of network devices, but it does not provide any functionality for time synchronization.

Deduplication is a process by which redundant data is eliminated, thus reducing the size of the dataset. Deduplication with cloud storage reduces the storage requirements, along with the amount of data to be transferred over the network, resulting in faster and more efficient data protection operations1. Deduplication can help to shrink the data footprint, lower the storage costs, and improve the performance of backup and recovery processes2. Deduplication can be applied at different levels, such as file-level, block-level, or byte-level, depending on the granularity and efficiency of the technique3. Deduplication can also be performed at different locations, such as source, target, or cloud, depending on the architecture and design of the storage system3. By implementing deduplication, a cloud administrator can achieve significant data savings and optimize the cloud storage costs4. References: Data deduplication techniques for efficient cloud storage management: a systematic review; How Data Deduplication Reduces Cloud Data Costs; How Data Deduplication Can Save Cloud Storage Costs?; Data Deduplication Overview; What is Data Deduplication and How Can it Help Reduce Cloud Costs?.

A dual-stack infrastructure is a network that supports both IPv4 and IPv6 protocols. An active-active configuration is a high-availability cluster that distributes workloads across two or more nodes that are running the same service simultaneously. Replication between the two sites means that data is copied from one site to another to ensure consistency and redundancy. Data synchronization is the process of ensuring that data is identical across multiple locations. Therefore, data synchronization in real time means that data is replicated as soon as it changes on either site, without any delay or lag. References: Active-Active vs. Active-Passive High-Availability Clustering, Dual-stack IPv6 architectures for AWS and hybrid networks – Part 2, Understanding Dual Stacking of IPv4 and IPv6 Unicast Addresses