Free JNCIA CoS Features Questions and Answers

Question 1

What is the primary purpose of Class of Service (CoS) in Junos OS?

Accepted Answer

To prioritize traffic based on application or user needs

Answer

CoS ensures that critical traffic, such as voice or video, gets higher priority compared to less critical traffic like file downloads.

Question 2

Which component in CoS is responsible for marking packets for priority handling?

Accepted Answer

Classifier

Answer

Classifiers identify packets and assign them to specific forwarding classes based on criteria like IP precedence or DSCP values.

Question 3

What is the role of a scheduler in Junos OS CoS?

Accepted Answer

Manages bandwidth allocation and queue prioritization

Answer

Schedulers determine how bandwidth is shared and prioritize traffic within queues.

Question 4

Which Junos CoS feature enforces traffic rates by dropping packets when limits are exceeded?

Accepted Answer

Policing

Answer

Policing enforces traffic rate limits by dropping or remarking packets that exceed the specified rate.

Question 5

What command is used to configure CoS classifiers in Junos OS?

Accepted Answer

set class-of-service classifier

Answer

The set class-of-service classifier command configures packet classification in Junos OS.

JNCIA - Juniper Networks Certified Internet Associate Practice Test