Exam 400-007 topic 1 question 69 discussion

Actual exam question from Cisco's 400-007

Question #: 69
Topic #: 1

[All 400-007 Questions]

How must the queue sizes be designed to ensure that an application functions correctly?

A. The default queue sizes are good for any deployment as it compensates the serialization delay.
B. The queuing delay on every device in the chain must be exactly the same to the application required delay.
C. Each individual device queuing delay in the chain must be less than or equal to the application required delay.
D. The sum of the queuing delay of all devices plus serialization delay in the chain must be less than or equal to the application required delay.

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Suggested Answer: D 🗳️

by Redrum702 at Sept. 9, 2024, 2:14 a.m.

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Devsin2000

4 months, 1 week ago

Selected Answer: D

Delays along the network add up. It is just like - we driving from point A to point B, all delays on the way will add up. We must reach the destination before the doors close.

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Answer D: The sum of the queuing delay of all devices plus serialization delay in the chain must be less than or equal to the application required delay. Explanation: When designing network queues to ensure that an application functions correctly, it's important to consider the cumulative impact of queuing delays and serialization delays across all devices in the network path. Queuing Delay: This is the time a packet spends waiting in a queue before it can be transmitted. If the queues are too large or too congested, this delay increases. Serialization Delay: This is the time it takes to place a packet onto the wire, which depends on the link speed and the size of the packet.

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