What is piggybacked ack, Computer Networking

Assignment Help:

What is piggybacked ACK

The protocol will be incorrect. Suppose that 3-bit sequence numbers we are using. Consider following situation:

A just send frame 7.

B gets frame and sends a piggybacked ACK.

A gets ACK and sends frames 0-6, all of that get lost.

B times out and again transmits its current frame, with ACK 7.

Look at the situation at A when frame with r.ack = 7 arrive. The key variables are AckExpected = 0, r.ack = 7, and Next Frame to Send = 7. The modified among will return true, causing A to think lost frames were being acknowledged.

 


Related Discussions:- What is piggybacked ack

Define interconnection network, Interconnection Network An interconnect...

Interconnection Network An interconnection network is designed for transferring data between two processors in a Multi-stage network. Memory bottleneck is a fundamental limitat

Client server architecture - application layer, Client  Server Architectur...

Client  Server Architecture There is an  always  on host  called  server  which  provides  service requests to many other hosts  called  clients. In other words  client progra

Topology, bus topology disadvantage?

bus topology disadvantage?

Subnet/address mask, To use a subnet or classless address, table under rout...

To use a subnet or classless address, table under routers and hosts that have address must keep two pieces of information with every address: the 32-bit address itself and another

Selective repeat (sr) - transport layer, Selective Repeat (SR) Select...

Selective Repeat (SR) Selective repeats is a connection oriented protocols  in which  transmitter and receiver have a window  of sequence numbers. SR scheme  avoids  the  unne

Illustrate go back - N protocol, Q. Illustrate Go Back - N protocol? G...

Q. Illustrate Go Back - N protocol? Go Back - N - Sender window size - Receiver window size = 1 - Why the names go back- N? - When the frame is spoilt the sende

Differentiate between fast fading and slow fading, Differentiate between Fa...

Differentiate between Fast fading and Slow fading Fast fading refers to changes in signal strength among a transmitter and receiver as the distance among the two changes by a s

netware protocol works on layer 3, Which NetWare protocol works on layer 3...

Which NetWare protocol works on layer 3--network layer-of the OSI model? Ans)IPX

What is ipv6, What is IPv6? IPv6, or Internet Protocol version 6, was d...

What is IPv6? IPv6, or Internet Protocol version 6, was developed to change IPv4. At present, IPv4 is being used to control internet traffic, butis expected to get saturated in

What is tcp/ip, TCP/IP is a name provided to the collection (or suite) of n...

TCP/IP is a name provided to the collection (or suite) of networking protocols that have been used to construct the global Internet. The protocols are also referred to as the DoD (

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd