Calculate the latency (from first bit sent to last bit received) for: (a) 1-Gbps Ethernet with a single store-and-forward switch in the path and a packet size of 5000 bits. Assume that each link introduces a propagation delay of 10 us and that the switch begins retransmitting immediately after it has finished receiving the packet. (b) Same as (a) but with three switches.

Calculate the latency (from first bit sent to last bit received) for: (a) 1-Gbps Ethernet with a single store-and-forward switch in the path and a packet size of 5000 bits. Assume that each link introduces a propagation delay of 10 us and that the switch begins retransmitting immediately after it has finished receiving the packet. (b) Same as (a) but with three switches.

Database System Concepts

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Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Network transmission cabling

A network is a collection of devices connected by communication links. A device can be a computer or any instrument capable of sending and receiving data or information formed by other nodes toward the network. A channel that connects people or things is known as a network. It sends the data from one place to another. It is the basic concept of a computer, network, and data communications.

Question

Calculate the latency (from first bit sent to last bit received) for:
(a) 1-Gbps Ethernet with a single store-and-forward switch in
the path and a packet size of 5000 bits. Assume that each link
introduces a propagation delay of 10 us and that the switch
begins retransmitting immediately after it has finished
receiving the packet.
(b) Same as (a) but with three switches.
(c) Same as (b), but assume the switch implements "cut-
through" switching; it is able to begin retransmitting the
packet after the first 128 bits have been received.

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