3.5-7 TCP Flow Control. True or False:  with TCP’s flow control mechanism, where the receiver tells the sender how much free buffer space it has (and the sender always limits the amount of outstanding, unACKed, in-flight data to less than this amount), it is not possible for the sender to send more data than the receiver has room to buffer.Group of answer choicesTrueFalse

Does the lack of receiver buffer space ever throttle the sender for these first four data-carrying segments?Group of answer choicesNo. The receiver advertised window is always larger than the amount of buffering needed for more than twenty 1500 byte segments.Yes, the client refrains from sending the third segment, since there is not enough advertised buffer space at gaia.cs.umass.edu.Yes, the client refrains from sending the fourth segment, since there is not enough advertised buffer space at gaia.cs.umass.edu.I've got no idea (note: this isn't the correct answer!)

2.1-4 TCP service. When an application uses a TCP socket, what transport services are provided to the application by TCP?  Check all that apply.Group of answer choicesFlow Control. The provided service will ensure that the sender does not send so fast as to overflow receiver buffers.Throughput guarantee. The socket can be configured to provide a minimum throughput guarantee between sender and receiver.Real-time delivery. The service will guarantee that data will be delivered to the receiver within a specified time bound.Best effort service.  The service will make a best effort to deliver data to the destination but makes no guarantees that any particular segment of data will actually get there.Congestion control.  The service will control senders so that the senders do not collectively send more data than links in the network can handle.Loss-free data transfer. The service will reliably transfer all data to the receiver, recovering from packets dropped in the network due to router buffer overflow.

Check all of the services below that are provided by the TCP protocol.A message abstraction, that preserves boundaries between message data sent in different socket send calls at the sender.A guarantee on the maximum amount of time needed to deliver data from sender to receiver.A guarantee on the minimum amount of throughput that will be provided between sender and receiver.A flow-control service that ensures that a sender will not send at such a high rate so as to overflow receiving host buffers.In-order data deliveryReliable data delivery.A byte stream abstraction, that does not preserve boundaries between message data sent in different socket send calls at the sender.

rom the perspective of the sender, the size of the TCP rwnd at the receiver never changes throughout the duration of the connection.Group of answer choicesTrue. The receiver advertises the amount of memory it in it's receive buffer at the start of the connection and the sender uses that value throughout the life of the connection.False. The receiver constantly recalculates the amount of free memory it has in it's receive buffer, and it advertises the current value in every segment it sends.

A video conferencing application requires low latency and high throughput to support real-time communication between participants. Which TCP congestion control mechanism is specifically designed to prioritize low latency over throughput?Question 1Answera.TCP CUBICb.TCP Renoc.TCP Vegasd.TCP BBR