DATA LINK LAYER WIRED NETWORKS
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which feature of Go-Back-N ARQ mechanism possesses an ability to assign the sliding window in the forward diretion?
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Control Variables
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Sender Sliding Window
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Receiver Sliding Window
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Resending of frames
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Explanation:
Detailed explanation-1: -In Selective Repeat ARQ only the lost or error frames are retransmitted, whereas correct frames are received and buffered. The receiver while keeping track of sequence numbers buffers the frames in memory and sends NACK for only frames which are missing or damaged.
Detailed explanation-2: -The size of the sending window determines the sequence number of the outbound frames. If the sequence number of the frames is an n-bit field, then the range of sequence numbers that can be assigned is 0 to 2−1. Consequently, the size of the sending window is 2−1.
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