Practice Test 2 | Google Cloud Certified Professional Cloud Network Engineer | Dumps | Mock Test
You have created a VPC with one subnet in your GCP Project. The subnet has a Primary IP CIDR of 192.168.0.0/24. How many usable addresses are there in the Primary IP range?
A. 256.
B. 255.
C. 253.
D. 252
Answer: D
Option A is incorrect, this is the total number of addresses in the CIDR range.
Option B is incorrect, GCP reserves four IP addresses in every primary CIDR range
Option C is incorrect, GCP reserves four IP addresses in every primary CIDR range.
Option D is correct, GCP reserves four IP addresses in every primary CIDR range therefore you are left with 252 usable addresses.
https://cloud.google.com/vpc/docs/vpc#reserved_ip_addresses_in_every_subnet
explains the IP reservations in Subnets.
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