Network Services Flashcards
dhcp
dynamic host configuration protocol
assigns ip, subnet mask, default gateway, dns server
ports 67, 68
udp
dns
domain name system
convert domain name to ip
port 53
udp and tcp
zone transfer
sharing of info between dns servers about their records
ntp
network time protocol
syncs clocks between systems
port 123
udp
dhcp scope
a list of valid ip addresses that are available for assignment or lease
dora process
for dhcp
discover, offer, request, acknowledge
dhcp relay
any host that forwards dhcp packets between clients and servers
fqdn
fully qualified domain name
domain name is under a top-level provider like .com
ex: diontraining.com
root level
highest level in dns hierarchy tree
contain global list of all top-level domains for com/net/mil
it is the “.” in .com
top level domains
organizational: com/net/mil
geographical: uk/fr/it
second level domain
directly below top level
ex: diontraining in diontraining.com
sub-domain
a new server underneath second level
ex: store in store.dointraining.com
host level
lowest and most detailed level inside of dns hierarchy
refers to specific machine
a record
address record
link host name to ipv4
aaaa record
address record
link host name to ipv6