Final answer:
The default CoS value for traffic received from the host on the access port in VoIP is 5.
Step-by-step explanation:
The default CoS value for traffic received from the host on the access port in VoIP is 5. CoS stands for Class of Service and is a method of prioritizing traffic based on different levels of importance. In VoIP, a higher CoS value means higher priority, so the default value of 5 indicates that VoIP traffic is given a moderate level of priority.