Nt1430 Unit 2 Assignment 1 Dhcp

Unit 6 [IT283: Networking with TCP/IP] Part 1 1. In a short essay describe the role of IP address leases in DHCP. Why is there a time limit? What is scavenging? What does the configuration “Obtain an IP address automatically” mean on Windows systems? An IP lease ensures the recovery of unused IP addresses to the pool of available IP addresses. The time limit ensures that the host is still alive and connected to the network. Scavenging is the process by which a DNS server will purge stale record. The server sets the span of time for which it considers a record stale. It then will remove the record to prevent multiple hostnames pointing to the same IP address. The option “Obtain an IP address automatically” sets the network interface to obtain its IP address, gateway, and DNS server from a DHCP server. 2. In a short essay explain the integration of DHCP with DNS. What is Dynamic DNS? DHCP and DNS are two systems that require integration to prevent IP collisions. When the DHCP server changes the IP address of a host it must update the associated DNS record to ensure proper name resolution. This accomplished through dynamic updating of the DNS server. The process used to accomplish this depends on the setup. A DHCP server can send the update or the client itself can send the update or the PTR/A records. Dynamic DNS is more commonly talked about when registering a Domain name with a dynamic IP address. This can be accomplished through software that sits on a router or host and send a DNS server the current IP address of the network.

Нигде не должно остаться даже намека на «Цифровую крепость». Сьюзан снова завладели прежние сомнения: правильно ли они поступают, решив сохранить ключ и взломать «Цифровую крепость».

Ей было не по себе, хотя пока, можно сказать, им сопутствовала удача. Чудесным образом Северная Дакота обнаружился прямо под носом и теперь попал в западню. Правда, оставалась еще одна проблема - Дэвид до сих пор не нашел второй экземпляр ключа.

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