WebRTC

Question 1

Which modes does NADA CC have?

Answer 1

Two modes:

• Accelerated ramp- up
• Gradual rate update

Question 2

What are the controllers for GCC?

Answer 2

Two controllers:
- Loss- based controller
- Delay- based controller
The lowest rate of the two is used.

Question 3

In what different ways can GCC be implemented?

Answer 3

Two ways:

• Both controllers at the sender
• Loss- based at the sender and delay- based at receiver

Question 4

In what ways can Shared Bottleneck Detection be done?

Answer 4

• 5- tuple
• via configuration
• By looking at measurements(e.g. if two flows have some exact same values, they might share bottleneck)

Question 5

What is STUN?

Answer 5

It is used for NAT- traversal, clients query their STUN server to find out what their public NAT is.

Question 6

What is TURN?

Answer 6

Is used if NAT- traversal by STUN failed, the communication is done with TURN servers as middlemen, instead of P2P.