Certified Cloud Security Professional (CCSP) Practice Exam

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Quality of Service (QoS) refers to:

The ability to manage untested code in a separate environment
The capability of a network to provide better service to selected traffic
A framework for application security
A method for authenticating users in a network

The correct answer is: The capability of a network to provide better service to selected traffic

Quality of Service (QoS) primarily focuses on the capability of a network to differentiate and prioritize different types of traffic. This means that networks can manage bandwidth usage, ensuring that more sensitive or critical data flows smoothly and without interruption, while less critical traffic can be deprioritized or delayed as necessary. By implementing QoS mechanisms, network administrators can control attributes like bandwidth allocation, latency, jitter, and packet loss, enhancing the overall user experience for applications that require real-time data transmission, such as voice over IP (VoIP) or video conferencing. In contrast to the other choices, which address unrelated aspects of network and application management, QoS specifically targets the performance and reliability of data transmission across a network, thus confirming its definition as providing better service to selected traffic.