Overview
This lab will introduce students to additional key services and protocols used on Transmission Control Protocol/Internet Protocol (TCP/IP) networks. These services include Dynamic Host Configuration Protocol (DHCP) and Domain Name Service (DNS).
outcomes:
In this lab, you will learn to:
- Create and test a DHCP scope.
- Create and test a DHCP reservation.
- Create and test DNS records.
Key terms and descriptions
Dynamic Host Configuration Protocol (DHCP)
a protocol that allows devices to automatically obtain network settings (such as IP address, default gateway, etc.) so they can communicate on the network. DHCP uses UDP ports 67 (Server) and 68 (Client).
Reservation
with DHCP, the process where an administrator assigns an address for DHCP to give to a client
Media Access Control (MAC) Address
the physical address burned into the ROM of an Ethernet network card; used by switches at the Data Link layer of the OSI model to move information between nodes on the same network
Domain Name System (DNS)
the protocol used to map hostnames and domain names to an IP address on the Internet. DNS uses UDP port 53 for initiating requests.
Fully Qualified Domain Name (FQDN)
the domain name that specifies the exact location of the specified node in the DNS hierarchy
Forward Lookup Zone
the zone used by DNS clients to obtain information such as IP addresses that correspond to DNS domain names or services in the zone
Host (A) Record
the DNS record that links an FQDN to an IPv4 address
Host (AAAA) Record
the DNS record that links an FQDN to an IPv6 address
Alias
a secondary name assigned to a host within DNS; allows an administrator to provide multiple names the same host can respond to
Reverse Lookup Zone
the zone that provides mapping from IP addresses back to DNS domain names
in-addr.arpa
The reverse lookup zone used by IPv4 to map IP addresses to DNS names
Pointer (PTR) Record
the DNS record that links an IP address to a FQDN; used for reverse lookups