TCP/IP, Fortinet, DNS, DHCP Flashcards
What happens if the LT expires with no response from any DHCP Server.
- Client’s IP Released
- All TCP/IP Communications cease
- Only DHCP DISCOVER broadcasts are allowed.
What does DORA stand for?
Discover, Offer, Request, Acknowledge
What is the difference between TCP and UDP?
TCP is Connection-oritented
UDP is connectionless
What is Nmap used for?
Using arbitrary TCP and UDP traffic for the purpose of network tests.
When will the client request a Lease RENEWAL
LT/2 and LT 7/8 (87.5%)
All the types of DNS records
A, AAAA, MX, PTR, TXT, NS, SOA, SRV, ALIAS, CNAME
What does DNS do?
Returns various records about Domain- and Host- names, including IP Addresses
What are two things that can Terminate a DHCP Lease?
Manual Operation from the User, Automatic operation from the Client when shutting down
What is Nslookup used for?
Getting DNS records
When does a Client request a REBIND?
When the Server isn’t available after the second RENEW request, LT 7/8
What is a DHCP Lease?
It is a temporary Client IP address.
What are the four Domain Server Types?
Root Domain, Top Level Domain Server, Authoritative Server and Recursive Server
What is a Lease RENEWAL?
Renewal is a request sent to an already-connected server.
What should you call two computers making a connection with each other?
Alice and Bob
What is a Lease REBIND?
When a Server doesn’t acknowledge a RENEWAL Request, the Client sends a BROADCAST to the network.
