Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 239

Which QoS marking is used when an administrator configures voice call signaling?

Answer options

• A. EF
• B. CS3
• C. CS4
• D. AF41

Correct answer: B

Explanation

CS3 is the correct marking for voice call signaling as it provides the necessary priority for control messages in voice over IP communications. The other options, such as EF, CS4, and AF41, are not specifically designated for voice call signaling; EF is typically used for voice traffic while CS4 and AF41 have different uses in QoS configurations.