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Google IT Support Professional Certificate • STUDY MODE

NAME RESOLUTION

QUESTION 1 OF 3

What transport layer protocol does DNS normally use? Great job! While DNS over TCP does exist, UDP is the most common protocol.

A
IP
B
UDPCorrect Answer
C
ICMP
D
TCP
QUESTION 2 OF 3

A DNS TTL determines what? Awesome! TTL stands for Time to Live and determines how long a DNS entry can be cached.

A
How long a DNS entry is allowed to be cachedCorrect Answer
B
How far away a DNS can be from you
C
How many DNS resolutions can take place before the IP has to change
D
How many steps there are in the resolution process
QUESTION 3 OF 3

How many root servers are there? You got it! There are 13 root servers.

A
8
B
13Correct Answer
C
16
D
17

Ready to test your recall?

What transport layer protocol does DNS normally use? Great job! While DNS over TCP does exist, UDP is the most common protocol.

A
IP
B
UDP
C
ICMP
D
TCP

How confident are you in this answer?