Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

5. Consider a simple protocol for transferring files over a link. After some initial negotiation, A sends data packets of size 1 KB to B;

image text in transcribed
5. Consider a simple protocol for transferring files over a link. After some initial negotiation, A sends data packets of size 1 KB to B; B then replies with an acknowledgment. A always waits for each ACK before sending the next data packet; this is known as stop-and-wait. Packets that are overdue are presumed lost and are retransmitted. (a) In the absence of any packet losses or duplications, explain why it is not necessary to include any "sequence number" data in the packet headers. (b) Suppose that the link can lose occasional packets, but that packets that do arrive always arrive in the order sent. Is a 2-bit sequence number (that is, N mod 4) enough for A and B to detect and resend any lost packets? Is a 1-bit sequence number enough? (c) Now suppose that the link can deliver out of order and that sometimes a packet can be delivered as much as 1 minute after subsequent packets. How does this change the sequence number requirements? points) (15

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Information Modeling And Relational Databases

Authors: Terry Halpin, Tony Morgan

2nd Edition

0123735688, 978-0123735683

More Books

Students also viewed these Databases questions

Question

Discuss the importance of workforce planning.

Answered: 1 week ago

Question

Differentiate between a mission statement and a vision statement.

Answered: 1 week ago