Ports 1-1023 are alluded to as system ports.Port 0 is not used for internet/network traffic, but it’s sometimes utilized in communications going down between different programs on identical computers.This range has been separated by the IANA (Internet Assigned Numbers Authority) into several different segments : These ports are spoken to by a solitary 16-bit number, implying that they can constitute a range of numbers 0-65535. Transportation layer conventions utilize the idea of ports and multiplexing/demultiplexing to convey information to individual services listening on network nodes. Network Devices (Hub, Repeater, Bridge, Switch, Router, Gateways and Brouter).Difference between File Transfer Protocol (FTP) and Secure File Transfer Protocol (SFTP).TELNET and SSH on Adaptive Security Appliance (ASA).Port Address Translation (PAT) on Adaptive Security Appliance (ASA).Port Address Translation (PAT) mapping to Private IPs.Difference Between Network Address Translation (NAT) and Port Address Translation (PAT).Types of Network Address Translation (NAT).Introduction of Virtual Router Redundancy Protocol (VRRP) and its configuration.Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy Protocol (VRRP).Difference between Physical and Logical Topology.Difference between IP address and Port Number.ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.
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