Question 37 In which one of the following versions of RDT, timers are added for timeout? RDT 1.0 RDT 2.0 RDT 2.1 RDT 3.0 None of the above choices. Question 36 In which one of the following protocols does the receiver send cumulative acks? UDP Go-Back-N Selective Repeat ARP None of the above choices. Question 35 In which one of the following protocols does the sender retransmit only the unacked packet when the timer expires? UDP Go-Back-N Selective Repeat ARP None of the above choices