Networking Week 4 Already Passed
What transport layer protocol does DNS normally use?
UDP
IP
TCP
ICMP ✔✔Great job! While DNS over TCP does exist, UDP is the most common protocol.
A DNS TTL determines what? ✔✔TTL stands for Time to Live and determines how long a DNS
entry can be cached.
How many root servers are there? ✔✔13 root servers.
An A Record contains what? ✔✔IPv4 address
Select all that are true ✔✔One domain name can point to one IP.
One domain name can point to many IPs.
Many domain names can point to the same IP.