One of the services provided by TCP is reliable data delivery.  We know from lecture that reliable delivery does not mean an absolute 100% guarantee that nothing will ever go wrong. Which of the following are services that TCP attempts to ensure (select all that apply)?Group of answer choicesTransmitted data is guaranteed to arrive at the destination.The sender and receiver will be notified if data is lost in transmission and can not be recovered.TCP can detect if data is intentionally altered during transmission and if it is altered TCP will not deliver the data.TCP ensures data will arrive at the receiver in the same order it was sent.TCP can detect if data is accidentally corrupted during transmission and if it is TCP will not deliver the data.

Which of the following are services that UDP attempts to ensure (select all that apply)?Group of answer choicesThe sender and receiver will be notified if data is lost in transmission and can not be recovered.UDP encodes the data so that it can not be understood if intercepted during transmission.UDP ensures data will arrive at the receiver in the same order it was sent.UDP can detect if data is intentionally altered during transmission and if it is altered UDP will not deliver the data.In almost all cases UDP can detect if data is accidentally corrupted during transmission and if it is UDP will not deliver the data.Transmitted data is guaranteed to arrive at the destination.

Check all of the services below that are provided by the TCP protocol.Group of answer choicesA guarantee on the minimum amount of throughput that will be provided between sender and receiver.In-order data deliveryA byte stream abstraction, that does not preserve boundaries between message data sent in different socket send calls at the sender.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.Reliable data delivery.A congestion control service to ensure that multiple senders do not overload network links.A flow-control service that ensures that a sender will not send at such a high rate so as to overflow receiving host buffers.

True or false: The TCP provides mechanisms to ensure that data is reliably delivered.1 pointTrueFalse

Which of the following protocols provides an alternative to TCP when the error-checking and correction functionality of TCP is not necessary?Group of answer choicesUDPIPBPGTLS

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.