Podcast
Questions and Answers
Which protocol uses a 'window' of up to N consecutive transmitted but unACKed packets?
Which protocol uses a 'window' of up to N consecutive transmitted but unACKed packets?
- Go-Back-N (correct)
- Receiver view
- Selective repeat
- Transport Layer
What does the sender do when it receives an ACK(n) in the Go-Back-N protocol?
What does the sender do when it receives an ACK(n) in the Go-Back-N protocol?
- Buffer out-of-order packets
- Send ACK for correctly-received packet so far
- Resend packet n and all higher seq # packets in window
- Move window forward to begin at n+1 (correct)
What does the receiver do when it receives an out-of-order packet in the Go-Back-N protocol?
What does the receiver do when it receives an out-of-order packet in the Go-Back-N protocol?
- Send ACK for the packet
- Resend the packet
- Discard the packet
- Buffer the packet (correct)
What does the receiver do when it receives a correctly-ordered packet in the Go-Back-N protocol?
What does the receiver do when it receives a correctly-ordered packet in the Go-Back-N protocol?
What does the sender do when it receives a duplicate ACK in the Go-Back-N protocol?
What does the sender do when it receives a duplicate ACK in the Go-Back-N protocol?
What does the sender do when it times out in the Selective repeat protocol?
What does the sender do when it times out in the Selective repeat protocol?
What is the purpose of the sender window in the Selective repeat protocol?
What is the purpose of the sender window in the Selective repeat protocol?
What is the purpose of the receiver window in the Selective repeat protocol?
What is the purpose of the receiver window in the Selective repeat protocol?
What does the receiver do when it receives an out-of-order packet in the Selective repeat protocol?
What does the receiver do when it receives an out-of-order packet in the Selective repeat protocol?
What does the receiver do when it receives a correctly-ordered packet in the Selective repeat protocol?
What does the receiver do when it receives a correctly-ordered packet in the Selective repeat protocol?
What is the purpose of the sender window in the Go-Back-N protocol?
What is the purpose of the sender window in the Go-Back-N protocol?
What is the purpose of the receiver window in the Go-Back-N protocol?
What is the purpose of the receiver window in the Go-Back-N protocol?
What does the sender do when it times out in the Go-Back-N protocol?
What does the sender do when it times out in the Go-Back-N protocol?
What does the receiver do when it receives an out-of-order packet in the Selective repeat protocol?
What does the receiver do when it receives an out-of-order packet in the Selective repeat protocol?
What relationship is needed between sequence number size and window size to avoid a dilemma in the Selective repeat protocol?
What relationship is needed between sequence number size and window size to avoid a dilemma in the Selective repeat protocol?
