Dell EMC Specialist – Systems Administrator, VNX — Question 3

Which field in an IP header is used for QoS marking?

Answer options

• A. ToS
• B. SA
• C. CoS
• D. DA

Correct answer: A

Explanation

The correct answer is A, ToS (Type of Service), which is specifically designed for marking QoS priorities in IP packets. Options B (SA - Source Address), C (CoS - Class of Service), and D (DA - Destination Address) do not serve this purpose in the context of the IP header.