What are three accurate descriptors of the functionality of the Cisco IOS IP SLA feature? (Choose three.)

What are three accurate descriptors of the functionality of the Cisco IOS IP SLA feature? (Choose three.)

• the sending of simulated data
• applies only to distance vector protocols
• the filtering of routing updates to and from neighbors
• a requirement that NTP be configured on source and responder
• provision of a mechanism to mark packets with different ToS
• verification that the TCP or UDP ports on a target are active and responsive

Exam with this question: CCNP ROUTE (Version 6.0) Chapter 5 Exam