Practice Test 2 | Google Cloud Certified Professional Cloud Architect | Dumps | Mock Test
Which of the following are characteristics of GCP VPC subnets? Choose 2 answers.
A. Each subnet can span over multiple availability zones within a region to provide a high availability environment.
B. Each subnet maps to a single Availability Zone.
C. CIDR block mask of /25 is the smallest range supported.
D. By default, all subnets can route between each other, whether they are private or public.
Correct Answers A and D
A (Correct) – Each subnet can span over multiple Availability Zones to provide a high-availability environment.
Each VPC network consists of one or more useful IP range partitions called subnetworks or subnets. Each subnet is associated with a region. Networks can contain one or more subnets in any given region. Subnets are regional resources.
VPC network example:
subnet3 is defined as 10.2.0.0/16, in the us-east1 region. One VM instance in the us-east1-a zone and a second instance in the us-east1-b zone, each receiving an IP addresses from its available range.
D (Correct Answer) – By default, all subnets can route between each other, whether they are private or public.
Because subnets are regional resources, instances can have their network interfaces associated with any subnet in the same region that contains their zones.
Resources within a VPC network can communicate with one another using internal (private) IPv4 addresses, subject to applicable network firewall rules.
The default network includes a “default-allow-internal” rule, which permits instance-to-instance communication within the network.
C is incorrect: Each subnet defines a range of IP addresses.
The minimum CIDR size for a subnet is /29.
Reference:
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