Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Time out
Timers are used to protect against lost packet. Each packet must have its own logical timers since only a single packet will be retransmitted after timeout. A single hardware timer can be used to mimic the function of multiple logical timers.
The SR receiver will acknowledge a correctly received packet whether or not it is in order. Out of order packets are buffered until any missing packets ( that is packets with lower sequence numbers) are received. The various actions taken by the SR receiver.
Packet with sequence number in ( rev base re base + N- 1) is correctly received. In this case the received packet falls within the receiver window and a selective ACK packet is returned to the sender.
If the packet was not previously received it is buffered. If this packet has a sequence number equal to the base of the window then this packet and any previously buffered and consecutively numbered packets are delivered to the receiver. The receiver window is them moved forward by the number of packets delivered to the receiver as in figure when a packet with a sequence number of 2 is received then packets 3, 4 and 5 can be delivered to the receiver.
Packet with sequence number in ( rev base n rev base-1) is received. In this case an ACK must be generated this is the packet which the receiver has previously acknowledge.
Otherwise ignores the packets.
To understand the functions of SR protocols lets take an example of a window size of four packets. The sender can sends packets 0 to 3. If first packet pkt 0 is lost and pkt 1 , 2 and 3 are received by the receiver instead of discarding these packets the receiver buffers the packets and send the ACK for the packets respectively. After the time out of pkt 0 the sender can retransmit this lost packet pkt 0 if the receiver receives the lost packet pkt 0 then the receiver deliver all the packets which was kept buffered by the receiver previously.
What is the role of IEEE in computer networking? IEEE, or the Institute of Electrical and Electronics Engineers, is an organization composed of engineers that issues and manage
Q. What are the Routing Techniques? Routing Routing Techniques Static versus Dynamic Routing Routing Table for classful Addressing Routing Table for Cl
Enumerate the concept of IP address The router must have an IP address of the same network (194.62.15.x in this case) for the convenience of the entire network to use the servi
Q. Show the Use of flow control? Flow control denotes to a set of procedures used to restrict the amount of data that the sender can send before waiting for Error Control
802.11 FHSS Frequency-hopping spread spectrum in a 2.4 GHz band Carrier sends on one frequency for short duration then hops to another frequency for same duration, hops agai
a. If a password to a cipher is exactly 8 characters long, and each character can be selected from [0-9], [a-z], and [A-Z], how many different passwords are possible? b. Suppose
Q. Diffrence between Network vs Internet Layers? - Similar to all the other OSI Layers the network layer provides both connectionless and connection-oriented services. From th
Drawback of Repeaters. Repeater has no filtering capability as it forwards every frame. Repeater shell be placed at accurate distance before actual signal becomes
Q. Summary of osi model? - There was no standard for networks in the early period and as a result it was difficult for networks to communicate with each other. - The ISO (In
Explain use of RTP and RTCP Protocol?
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd