Question

In QoS, which queuing algorithm will allow allows

delay-sensitive data to be sent first giving it preferential
treatment> a. FIFO b. LLQ c. WFQ d. LIFO e. CBWFQ

Answer 1

Low Latency Queuing (LLQ) is the QoS queuing algorithm that allows delay-sensitive data to be prioritized and sent first, essential for real-time applications.

Step-by-step explanation:

In the context of Quality of Service (QoS), the queuing algorithm that allows delay-sensitive data to be sent first by giving it preferential treatment is Low Latency Queuing (LLQ).

LLQ combines both priority queuing and class-based weighted fair queuing (CBWFQ). It places delay-sensitive traffic such as voice or video into the priority queue, ensuring they are sent before non-critical traffic. This is crucial for real-time applications that require consistent and predictable end-to-end latency. While FIFO (First In First Out) and LIFO (Last In First Out) do not differentiate between types of traffic, WFQ (Weighted Fair Queuing) and CBWFQ (Class-Based Weighted Fair Queuing) provide ways to prioritize traffic but not with the same strict prioritization as LLQ for delay-sensitive traffic.