Question

what is the purpose of DHCP server. what is the purpose of DNS server. what command do we use to troubleshoot connectivity between Hosts. what command do we use to lookup ip address. what is the purpose of VPN server. what is the purpose of PROXY server. what is the purpose of FIREWALL server.

Answer 1

DHCP: DHCP stands for dynamic host configuration protocol. It is a protocol that manages the network. The purpose of DHCP is to assign the IP address to any networks or devices dynamically. All these devices are communicated with each other by this assigned IP address. DHCP manages the configuration of connected devices with respect to their IP addresses.

DNS server: DNS stands for Domain name system. It is a collection or simply a database that contains public IP addresses along with their host names. It is not easy to remember the IP address but it is easy to remember the hostnames. Hence, the purpose of DNS server is to provide reliability in remembering the network ID.

ping command is used to check the connectivity between two hosts.

ipconfig command is used to lookup the ip address.

VPN server: VPN stands for virtual private network that is used to provide secure connections between two private networks. It is used to provide private and secured connections.

PROXY server: It is the communication channel between a client and a server. The purpose of proxy server is to provide security of the internal system. It also used to bypass the security controls.

FIREWALL server: Firewall server is used to monitor the incoming and outgoing information the system. It is the layer between the system browser and the server. Firewall is used for security purpose, to monitor the malicious activities.