Which service can be used on a wireless router to prioritize network traffic among different types of applications so that voice and video data are prioritized over email and web data?

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BlackTom AI · Accepted Answer

The question asks which service on a wireless router can prioritize network traffic by application type so that real-time media like voice and video get precedence over email and web data.
Option a: DNS. DNS translates domain names to IP addresses; it does not influence the priority of different application traffic. So it won’t manage QoS or traffic shaping.
Option b: DHCP. DHCP assigns IP addresses and some network configuration dynamically, but it does not govern how packets are treated or prioritized on the network.
Option c: NAT. Network Address Translation modifies IP addresses for packets crossing a router, often for routing to the Internet, yet it does not implement traffic prioritization rules for different application types.
Option d: QoS. Quality of Service is specifically designed to classify and prioritize traffic according to rules or policies, enabling voice and video (which are sensitive to delay and jitter) to be moved ahead of less time-sensitive data like email or standard web traffic. This aligns exactly with the goal described in the question.
In summary, only QoS provides the mechanism to prioritize traffic by application type, while DNS, DHCP, and NAT serve other essential functions that do not regulate traffic priority.

CET-1023-001 - 50974 - 202505 Final Theory Exam

Which service can be used on a wireless router to prioritize network traffic among different types of applications so that voice and video data are prioritized over email and web data?

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