ccna 200-301 network simulator tools plus company

ccna 200-301 network simulator tools plus company.23 13k36 11058 1°°. 1......... The destination port number of the source port is confirmed according to the serial number of the source port. The data of the source port is confirmed. Data . _~1 for |1058 || stretch I.... IChapter 2 Network Interconnection and Reference Models*** | 021 Source host A logs in remotely to destination host B. The source host uses a local random port 1058 to access service port 23 of the destination host. b The initial serial number of the source host is 100, with no confirmation number.2 Host B receives a packet from Host A for response, and returns a packet with a source port of 23 and a destination port of 1058, the port number in the packet returned by Host B is the opposite of the source and destination ports in the port number sent by Host A. The initial serial number of Host B is 1, and the acknowledgement number 101 indicates that the serial number 100 of Host A has been received, and the packet with the serial number 101 is desired.3 Host A responds to the packet sent from host B. The sequence number sent is 101, and the acknowledgement number 2 indicates that the sequence number lo has been received from host B.2.4.4 Application Layer***The application layer includes all the higher layer protocols, not too far removed from OSI's application layer protocols, including HTTP (Hypertext Transfer Protocol, using port 80 of TCP), Telnet (Telnet protocol, using port 23 of TCP), FTP (File Transfer Protocol, using port 21 of TCP and an unspecified data transfer port), SMTP (Simple Mail Transfer Protocol using TCP port 25), POP3 (Post Office 3 protocol, using TCP port 110), DNS (Domain Name Service, using UDP and TCP port 53), etc.Session 2.5 IP Addresses*The IP address section makes up a significant portion of the CCNA exam° This section focuses on binary and decimal conversions, classification of IP addresses, IP subnetting, subnet masks, public and private addresses, and more.