Exam CV1-003 topic 1 question 51 discussion

Actual exam question from CompTIA's CV1-003

Question #: 51
Topic #: 1

A cloud architect is designing the VPCs for a new hybrid cloud deployment. The business requires the following:
✑ High availability
✑ Horizontal auto-scaling
✑ 60 nodes peak capacity per region
✑ Five reserved network IP addresses per subnet
✑ /24 range
Which of the following would BEST meet the above requirements?

A. Create two /25 subnets in different regions
B. Create three /25 subnets in different regions
C. Create two /26 subnets in different regions
D. Create three /26 subnets in different regions
E. Create two /27 subnets in different regions
F. Create three /27 subnets in different regions

Show Suggested Answer

Suggested Answer: C 🗳️

by CHinesed at June 22, 2021, 5:05 p.m.

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MeisAdriano

1 year, 4 months ago

Selected Answer: A

/26 creates 4 networks with 64hosts per network, using this strategy you lost 1 network because answert doesn't provides "4 different regions". That's why the best solution is to subnet the network with CIDR /25: here you can have two networks in two different regions, each network can have 128hosts-2(network and broadcast)

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CHinesed

4 years ago

Correct answer A: 60 nodes + 5 reserved network IP addresses. The CIDR /25 allows for 126 valid IP addresses and 2 network addresses.

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CuDan

3 years, 11 months ago

Agree with you, tricky is 60 + 5 > 64 address (/26). So the answer must be A.

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