engineering computer science MCQ #446

A system uses a go-back-N ARQ protocol with a window size of 7. If the sender sends packets 0 to 6 and packet 3 is lost, how many packets are retransmitted?

engineering computer science MCQ #446

  1. Question 1

    Q1. A system uses a go-back-N ARQ protocol with a window size of 7. If the sender sends packets 0 to 6 and packet 3 is lost, how many packets are retransmitted?

    • A) 4
    • B) 3
    • C) 7
    • D) 1

    Answer: 4

    Explanation: In go-back-N, if a packet is lost, all packets from that point onwards are retransmitted. So, packets 3, 4, 5, and 6 are retransmitted, making 4 packets.