Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 331

Which IPv4 packet field carries the QoS IP classification marking?

Answer options

• A. ID
• B. TTL
• C. FCS
• D. ToS

Correct answer: D

Explanation

The correct answer is D, ToS (Type of Service), which is used to specify the QoS requirements for the packet. The other options, such as ID, TTL (Time to Live), and FCS (Frame Check Sequence), serve different purposes in the IPv4 packet structure and do not relate to QoS marking.