JN0-102 · Question #357
What are the contents of a scheduler?
The correct answer is A. A scheduler contains parameters that describe how a queue should be serviced. A scheduler in Junos defines a set of parameters that dictate how a specific queue should be serviced, including its bandwidth, priority, and buffer usage.
Question
What are the contents of a scheduler?
Options
- AA scheduler contains parameters that describe how a queue should be serviced.
- BA scheduler contains traffic that is ready to be transmitted.
- CA scheduler contains forwarding classes that allow traffic to be forwarded.
- DA scheduler contains a map between the classification of a packet and its forwarding class.
How the community answered
(42 responses)- A93% (39)
- B2% (1)
- C5% (2)
Why each option
A scheduler in Junos defines a set of parameters that dictate how a specific queue should be serviced, including its bandwidth, priority, and buffer usage.
A scheduler in Juniper's Class of Service (CoS) implementation contains configuration parameters that describe the servicing characteristics of a queue, such as transmit rates (guaranteed and maximum), priority levels, and buffer management, which together determine how traffic exits that queue.
Queues themselves contain traffic waiting for transmission, while schedulers manage the rules for how that traffic is transmitted from the queues.
Forwarding classes are used to group traffic and map it to specific queues, but the scheduler operates on the queues themselves based on those classes.
This describes the function of a classifier or a forwarding class map, which assigns incoming packets to a specific forwarding class, not a scheduler.
Concept tested: Junos scheduler function in QoS
Source: https://www.juniper.net/documentation/us/en/software/junos/cos-all/topics/topic-map/cos-schedulers.html
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