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Exam SK0-005 topic 1 question 34 discussion

Actual exam question from CompTIA's SK0-005

Question #: 34
Topic #: 1

A server technician is configuring the IP address on a newly installed server. The documented configuration specifies using an IP address of 10.20.10.15 and a default gateway of 10.20.10.254. Which of the following subnet masks would be appropriate for this setup?

A. 255.255.255.0
B. 255.255.255.128
C. 255.255.255.240
D. 255.255.255.254

Show Suggested Answer

Suggested Answer: A 🗳️

by el_adamba at Jan. 23, 2022, 1:41 p.m.

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slpcomputer

Highly Voted 3 years, 6 months ago

255.255.255.0

upvoted 7 times

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Linenzo

Highly Voted 3 years, 6 months ago

10.20.10.15 and 10.20.10.254 should be in the same subnet 255.255.255.0 must be the subnet mask

upvoted 7 times

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adadadad5941

Most Recent 8 months, 3 weeks ago

255.255.255.0

upvoted 1 times

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Obi_Wan_Jacoby

2 years, 6 months ago

Selected Answer: A

Answer is A. If you do not know this, please take Net+ next.

upvoted 2 times

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Pongsathorn

2 years, 8 months ago

Selected Answer: A

255.255.255.0

upvoted 1 times

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Rainkoot

2 years, 11 months ago

Selected Answer: A

255.255.255.0 or 10.20.10.0/24

upvoted 2 times

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Dion79

3 years, 3 months ago

Selected Answer: A

I'd go with A.

upvoted 5 times

Dion79

3 years, 2 months ago

specifies using an IP address of 10.20.10.15 and a default gateway of 10.20.10.254, would mean you would need 256 addresses, you would lose 2 addresses, giving you 254. So you would us CIDR /24 putting you at submask 255.255.255.0

upvoted 3 times

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dnc1981

3 years, 4 months ago

A is the correct answer

upvoted 2 times

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PEsty93

3 years, 4 months ago

Selected Answer: A

For both devices to be in the same subnet then it needs to include the entire range

upvoted 3 times

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el_adamba

3 years, 6 months ago

WTF? Do you really think that is right answer? I tried to use your answer and guess what? Number of Usable Hosts: 0 - ROTFL IPv4 Subnet Calculator Result IP Address: 10.20.10.15 Network Address: 10.20.10.14 Usable Host IP Range: NA Broadcast Address: 10.20.10.15 Total Number of Hosts: 2 Number of Usable Hosts: 0 Subnet Mask: 255.255.255.254

upvoted 6 times

hisdayold112

3 years, 3 months ago

you really think that is right answer? I tried to use your answer and guess what? Number of Usable Hosts: 0 - ROTFL IPv4 Subnet Calculator Result IP Address: 10.20.10.15 Network Address: 10.20.10.14 Usable Host IP Range: NA Broadcast Address: 10.20.10.15 Total Number of Hosts: 2 Number of Usable Hosts: 0 Subnet Mask: 255.255.255.254

upvoted 1 times

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