ITM 301 Lecture Notes - Lecture 5: Private Network, Domain Name System, Dynamic Host Configuration Protocol

• School: Ryerson University
• Department: Information Technology Management
• Course: ITM 301
• Professor: Farid Shirazi

Document Summary

Itm301 week 5: dns: domain name system (server) It is a database that has a main function: name-to-ip resolution. Given a domain name it returns its ip: ip-to-name resolution. A fully qualified domain is: http://www. microsoft. com: dynamic update. There are 3 parties involved in this process (dhcp, client & dns) A dns must get the same info from dhcp and client. If a client cannot find a dhcp server the client assigns itself a random ip from the pool of 169. 254. x. x (x=any number) Note: you cannot access the internet using a private ip address. Dns records are referring to the type of services available on a computer. Srv -> server (pointer) ptr -> reverse name. To find out the service available on a remote server you need to know the function of a service. : cname is a name referred to a domain. (www. microsoft. com) nslookup type=mx gmail. com. At the heart of star topology there is a device called switch.