Correct Answer. C. Amazon RDS Amazon Relational Database Service (RDS) is designed to simplify the setup, operation, and scaling of a relational database in the cloud, providing cost- efficient and resizable capacity while automating time-consuming administration tasks such as hardware provisioning, database setup, patching, and backups.
Option A is incorrect because Amazon EC2 provides virtual servers but does not offer managed database services.
Option B is incorrect as Amazon S3 is best used for scalable storage solutions and does not provide database services.
Option D is incorrect because Amazon VPC allows users to provision a logically isolated section of the AWS Cloud where they can launch AWS resources in a virtual network they define. It does not pertain directly to managed database services.

Correct Answer. C. Laptop with 16 GB of RAM For CAD and 3D modeling software that recommends 16 GB of RAM, choosing a laptop with exactly 16 GB ensures the software can run effectively without unnecessary expenditure on excessively high specifications.
Option A is incorrect because 8 GB of RAM is below the recommended requirement and may result in slower performance and inability to handle complex tasks efficiently.
Option B is incorrect because 12 GB of RAM, while closer to the recommendation, still falls short of the optimal requirement needed to ensure peak software performance.
Option D is incorrect because although 32 GB of RAM would offer excellent performance, it is not cost- effective given the stated requirements and may represent unnecessary spending

Correct Answer. C. Check the scanner's USB or network connection to ensure it is secure The first step should always be to check the physical connections as these are often the simplest and most common cause of connectivity issues. Loose or disconnected cables can prevent the scanner from being recognized.
Option A is incorrect. Rebooting the devices is a valid troubleshooting step but should follow checking the physical connections.
Option B is incorrect. Replacing the scanner is premature without first ensuring that simpler fixes, like checking connections, are not effective.
Option D is incorrect. Driver updates are important but typically not the first line of action unless there is indication that the device is recognized but malfunctioning due to software issues.

Correct Answer. B. ping6 2001:db8::3257:9652 ping6 is specifically used to test IPv6 connectivity between source and destination addresses. This command helps verify that the IPv6 path to the specified address is clear and that the server is responsive.
Option A is incorrect. ping6 ::1 tests the loopback address and not the remote connectivity.
Option C is incorrect. While traceroute6 would provide the route packets take to the destination, it is more complex and not required just to check connectivity.
Option D is incorrect. nslookup is used for DNS resolution queries, not for checking direct connectivity.

When a security vulnerability is identified, the most urgent action is to implement a quick fix or patch to close the vulnerability and protect the system from potential exploits. This immediate action prevents any exploitation and mitigates potential damage.
Option B is incorrect because while a security audit is important, it does not provide the immediate protection needed against an active security threat.
Option C is incorrect as closing down the application may be unnecessarily disruptive and harmful to business operations.
Option D is incorrect because continuing operations without addressing the vulnerability exposes the system to significant risk.