Use 1000 instead of 1024 please Note: To make calculations easier, you can use 1000 instead of 1024 when calculating kb or multiplesthereof.1. Packet delay and transmission time.a. How long (in seconds) would it take to deliver a 22 TB file (22 x 10¹² bytes) across a 1 Gb/sec (b=bits) dedicated link?b. Now assume the 1 Gb/sec dedicated link is reduced to a 0.6 Gb/s link, but 65% of the data frompart a of this problem are cached locally. How long would this take to be delivered (from bothcache and from the network)?c. Suppose 4 packets arrive simultaneously to a link which no packets are currently beingtransmitted or queued. Each packet is of length 1500 bits and the link has a transmission rate of1 Mbps. What is the average queuing delay (dqueue)?d. What is the total transmission time for the 4 packets?

Answered: 1. Packet delay and transmission time.…

Database System Concepts

7th Edition

ISBN:9780078022159

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

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

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Use 1000 instead of 1024 please

Note: To make calculations easier, you can use 1000 instead of 1024 when calculating kb or multiples
thereof.
1. Packet delay and transmission time.
a. How long (in seconds) would it take to deliver a 22 TB file (22 x 10¹² bytes) across a 1 Gb/sec (b=
bits) dedicated link?
b. Now assume the 1 Gb/sec dedicated link is reduced to a 0.6 Gb/s link, but 65% of the data from
part a of this problem are cached locally. How long would this take to be delivered (from both
cache and from the network)?
c. Suppose 4 packets arrive simultaneously to a link which no packets are currently being
transmitted or queued. Each packet is of length 1500 bits and the link has a transmission rate of
1 Mbps. What is the average queuing delay (dqueue)?
d. What is the total transmission time for the 4 packets?

Expert Solution

Step 1 Introduction

Packet delay is the time delay between when a packet of data is sent from one place to another. This is also referred to as latency. Transmission time is the amount of time required to push all the bits of the packet into the transmission medium. Typically, the transmission time is much shorter than the packet delay. For example, a 200-byte packet may have a transmission time of 240 seconds, while the overall packet delay may be 480 seconds.

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