The Transport Layer - CIS @ Temple University
... Some TCP features Every byte has its own 32 bit sequence number. Sending and receiving entities exchange data in segments Each segment is the 20 byte header and data (total up to 64K) TCP may aggregate multiple writes into one segment or split one write into several segments. A segment size if the ...
... Some TCP features Every byte has its own 32 bit sequence number. Sending and receiving entities exchange data in segments Each segment is the 20 byte header and data (total up to 64K) TCP may aggregate multiple writes into one segment or split one write into several segments. A segment size if the ...
Ethernet, IP and TCP
... and “wraps” it in a frame used on another network. • Inside the IP packet, there is a TCP segment. The TCP segment tells the destination machine what to do with the data. ...
... and “wraps” it in a frame used on another network. • Inside the IP packet, there is a TCP segment. The TCP segment tells the destination machine what to do with the data. ...
Lecture-9 on 10/22/2009 - Computer Science and Engineering
... • Average throughout of TCP as function of window size, RTT? – ignoring slow start ...
... • Average throughout of TCP as function of window size, RTT? – ignoring slow start ...
10 pts - ECSE - Rensselaer Polytechnic Institute
... Multibit feedback schemes allow fine grained control of the operating point in the network by explicitly providing the senders with rates they should send traffic at. FEC integration provides robust error recovery and reduces the need for retransmissions over lossy wireless links. Together these sch ...
... Multibit feedback schemes allow fine grained control of the operating point in the network by explicitly providing the senders with rates they should send traffic at. FEC integration provides robust error recovery and reduces the need for retransmissions over lossy wireless links. Together these sch ...
jen-network - Princeton University
... – Sender sends packet, sets timeout, and waits for ACK – Receiver sends ACKs for received packets – Sender infers loss from timeout or duplicate ACKs ...
... – Sender sends packet, sets timeout, and waits for ACK – Receiver sends ACKs for received packets – Sender infers loss from timeout or duplicate ACKs ...
CSE331-10
... • A value CongestionWindow is used to control the number of unacknowledged transmissions. • This value is increased linearly until timeouts for ACKs are missed. • When timeouts occur, CongestionWindow is decreased by half to reduce the pressure on the network quickly. • The strategy is called “addit ...
... • A value CongestionWindow is used to control the number of unacknowledged transmissions. • This value is increased linearly until timeouts for ACKs are missed. • When timeouts occur, CongestionWindow is decreased by half to reduce the pressure on the network quickly. • The strategy is called “addit ...
No Slide Title
... SMTP: Simple Mail Transfer Protocol Provides a store-and-forward mail capability between host computer mail systems on the network MIME: Multimedia Internet Mail Exchange ...
... SMTP: Simple Mail Transfer Protocol Provides a store-and-forward mail capability between host computer mail systems on the network MIME: Multimedia Internet Mail Exchange ...
Computer Science 461 Midterm Exam March 15, 2006 1:30-2:50pm
... Suppose A has a TCP connection with B, where A sends data packets and B sends ACKs; similarly, suppose D has a TCP connection with C, where D sends data packets and C sends ACKs. Suppose the Maximum Segment Size (MSS) is 472 bytes, and all packets sent by A and D have this size; suppose also that B ...
... Suppose A has a TCP connection with B, where A sends data packets and B sends ACKs; similarly, suppose D has a TCP connection with C, where D sends data packets and C sends ACKs. Suppose the Maximum Segment Size (MSS) is 472 bytes, and all packets sent by A and D have this size; suppose also that B ...
Chapter 13 Congestion in Data Networks
... halt flow of packets from other nodes • May mean that other nodes have to apply control on incoming packet rates • Propagates back to source • Can restrict to logical connections generating ...
... halt flow of packets from other nodes • May mean that other nodes have to apply control on incoming packet rates • Propagates back to source • Can restrict to logical connections generating ...
Midterm Sample
... e. Simplicity in network core f. Reliable delivery. Ans :a, d. Today’s Internet g. is a datagram network h. has multiple network layer protocols i. runs multiple applications j. has a flat structure k. emphasizes simplicity at the network edge l. is distributed m. only uses client-server architectur ...
... e. Simplicity in network core f. Reliable delivery. Ans :a, d. Today’s Internet g. is a datagram network h. has multiple network layer protocols i. runs multiple applications j. has a flat structure k. emphasizes simplicity at the network edge l. is distributed m. only uses client-server architectur ...
lecture8
... Flow control runs end-to-end, instead of on the same link RTT can vary widely Receiver’s maximum window size can vary - Because resources allocated to a connection varies ...
... Flow control runs end-to-end, instead of on the same link RTT can vary widely Receiver’s maximum window size can vary - Because resources allocated to a connection varies ...
ppt - Computer Science
... • Each byte in the stream has its own 32-bit sequence number – on a 56 kbps phone line, it takes 1 week (plus) to cycle through – “At 100 megabits/sec, the cycle time is 5.4 minutes” RFC 793 – “Maximum Segment Lifetime, the time a TCP segment can exist in the internetwork system. Arbitrarily defined ...
... • Each byte in the stream has its own 32-bit sequence number – on a 56 kbps phone line, it takes 1 week (plus) to cycle through – “At 100 megabits/sec, the cycle time is 5.4 minutes” RFC 793 – “Maximum Segment Lifetime, the time a TCP segment can exist in the internetwork system. Arbitrarily defined ...
unit3
... The idea Behind Sliding Windows • A simple positive acknowledgement protocol wastes a substantial amount of network bandwidth because it must delay sending a new packet until it receives an acknowledgement for the previous packet. ...
... The idea Behind Sliding Windows • A simple positive acknowledgement protocol wastes a substantial amount of network bandwidth because it must delay sending a new packet until it receives an acknowledgement for the previous packet. ...
Snort Intrusion Detection
... Uses Rules to form “signatures” Modular Detection elements to form specific ...
... Uses Rules to form “signatures” Modular Detection elements to form specific ...
2001 Midterm Solutions
... Flow control assures that the receiver’s buffer does not overflow. Under the TCP protocol the receiver notifies the sender of the current remaining free space in its receive buffer using the receive window field in the TCP header. The sender insures that the receive buffer doesn’t overflow by guaran ...
... Flow control assures that the receiver’s buffer does not overflow. Under the TCP protocol the receiver notifies the sender of the current remaining free space in its receive buffer using the receive window field in the TCP header. The sender insures that the receive buffer doesn’t overflow by guaran ...
CCNA 1 Module 11 TCP/IP Transport and Application
... transmission, which is acknowledged by the receiver. ...
... transmission, which is acknowledged by the receiver. ...
Network protocols - VCE IT Lecture Notes
... If the checksum sent in the packet and the checksum calculated upon arrival do not match, the receiving computer asks for the packet to be sent again. ...
... If the checksum sent in the packet and the checksum calculated upon arrival do not match, the receiving computer asks for the packet to be sent again. ...
TCP/IP
... TCP is a connection-oriented transport protocol that sends data as an unstructured stream of bytes. By using sequence numbers and acknowledgment messages, TCP can provide a sending node with delivery information about packets transmitted to a destination node. ...
... TCP is a connection-oriented transport protocol that sends data as an unstructured stream of bytes. By using sequence numbers and acknowledgment messages, TCP can provide a sending node with delivery information about packets transmitted to a destination node. ...
Document
... Congestion avoidance After 3 dup ACKs: CongWin is cut in half window then grows linearly But after timeout event: CongWin instead set to 1 MSS; window then grows exponentially to a threshold, then grows linearly ...
... Congestion avoidance After 3 dup ACKs: CongWin is cut in half window then grows linearly But after timeout event: CongWin instead set to 1 MSS; window then grows exponentially to a threshold, then grows linearly ...
山东建筑大学试卷 共 4页 第 1 页 至 学年 第 1 学期 课程名称 计算机
... What are the principal responsibilities of each of these layers?(7 points) 2. What is the difference between persistent HTTP with pipelining and persistent HTTP without pipelining? (4 points) 3. Consider a subnet with prefix 202.202.202.64/26. Give an example of one IP address (of form xxx.xxx.xxx.x ...
... What are the principal responsibilities of each of these layers?(7 points) 2. What is the difference between persistent HTTP with pipelining and persistent HTTP without pipelining? (4 points) 3. Consider a subnet with prefix 202.202.202.64/26. Give an example of one IP address (of form xxx.xxx.xxx.x ...
Routing in Sensor Networks: Directed Diffusion and other
... RTS/CTS and Carrier Sensing for Hidden Terminals Directional antennas to reduce interference Rate control to extract max capacity from available SINR Power control for spatial reuse & energy savings – topology control ...
... RTS/CTS and Carrier Sensing for Hidden Terminals Directional antennas to reduce interference Rate control to extract max capacity from available SINR Power control for spatial reuse & energy savings – topology control ...
Transmission Control Protocol
... create TCP segment with sequence number NextSeqNum if (timer currently not running) start timer pass segment to IP NextSeqNum = NextSeqNum + length(data) event: timer timeout retransmit not-yet-acknowledged segment with smallest sequence number start timer event: ACK received, with ACK field value o ...
... create TCP segment with sequence number NextSeqNum if (timer currently not running) start timer pass segment to IP NextSeqNum = NextSeqNum + length(data) event: timer timeout retransmit not-yet-acknowledged segment with smallest sequence number start timer event: ACK received, with ACK field value o ...