Sequencing and Acknowledgments
The Go-Back-N ARQ protocol ensures reliable data transmission over a network by using sequence numbers to track and acknowledge the successful receipt of data packets. If a packet is lost or corrupted, the protocol prompts the sender to retransmit all unacknowledged packets from the last successfully received packet. This process helps to maintain the correct order of data transmission and minimize errors in the network.
Transport layer is the fourth layer in the OSI model. Transport layer is responsible for process to process delivery of entire message. Other than that it also control connection, flow of data and error , thus will resend the packet if it get lost in between.
If we are sending a file in one go and if some error occurred in between the file transfer then the complete file has to be resend which wastes the bandwidth so to prevent this, the file to send is divided in to smaller unit which we call packet, and then send packets 1 by one so that if a packet is lost then we need to send only that particular packet not the complete file.
A packet may be lost due to congestion: too many packets are sent, the queue gets full, and eventually the router or switch starts dropping packets. It may also occur due to different failures; including temporary cabling problems, problems in a switch or router, etc.; these in turn can cause temporary problems with the routing information (a "non-converged network"), causing the packets to travel in loops until the TTL runs out, or a router erroneously concluding that a certain address can't be reached. This latter problem might also be caused by a misconfigured router.
Yes, TCP (Transmission Control Protocol) is a reliable protocol for data transmission. It ensures that data is delivered accurately and in the correct order by using error checking and retransmission of lost packets.
Session Layer traced lost Packets.
At which layer lost packets are traced?
TCP uses acknowledgment (ACK) packets to indicate that it has properly received a sequence of packets. When a sender transmits data, the receiver sends back an ACK packet containing the next expected sequence number, confirming receipt of all prior packets. This mechanism helps ensure reliable data transmission and allows the sender to manage retransmissions for any lost packets.
About 20%
Because everyone's packets kept getting lost
I had to detect the man that was in the car with the lost boy !
Hi, Packetization delay is the difference in between end to end one way delay between selected packets in a flow with any lost packets.
Transport!
TCP does, not sure about others. TCP can handle out-of-order packets and lost packets. Even though TCP does some rudimentary error checking, corrupted packets sometimes get through.
PING packets can get lost due to various reasons, including network congestion, routing issues, or hardware failures. If a router or switch is overwhelmed with traffic, it may drop packets to manage load. Additionally, if there are configuration errors or if the destination host is down or unreachable, the PING packets may not reach their intended target. Lastly, packet loss can occur due to poor quality connections, such as issues with cables or wireless interference.
Transport
PDV stands for packet delay variation. It is a term used in computer networking which is the difference in the end-to-end one-way delay between selected packets in any ignored lost packets.