Which of the following services would restrict connectivity to cloud resources?
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A. B. C. D.A.
The correct answer is B. Firewall.
Explanation:
A firewall is a network security system that monitors and controls incoming and outgoing traffic based on predetermined security rules. A firewall can be used to restrict connectivity to cloud resources by allowing only authorized traffic and blocking unauthorized traffic.
Security lists and intrusion detection systems are also network security services that can be used to restrict access to cloud resources, but they are not designed specifically for this purpose. Security lists are used to define which IP addresses are allowed or blocked from accessing a specific resource in the cloud. Intrusion detection systems are designed to detect and prevent unauthorized access to a network or system.
A VPN (Virtual Private Network) is a technology that allows users to connect to a private network over a public network, such as the internet. VPNs are used to create a secure connection between two or more devices, but they do not necessarily restrict connectivity to cloud resources.
In summary, while all of the listed services can enhance security and restrict access to cloud resources, a firewall is specifically designed for this purpose and is the best choice among the options given.