N10-009 Domain 1: Networking Concepts

Which subnet mask creates four equal subnets from a /24?

Multiple choice — select one answer

Answer choices

  1. a. Well-known ports in TCP/UDP (e.g., 80 HTTP)
  2. b. /26
  3. c. Data, Segment, Packet, Frame, Bits
  4. d. Follow change control and monitor metrics

Architectural breakdown & explanation

/26 yields four subnets with 62 usable hosts each in a classful-style split.

Correct answer(s): b. /26

Exam domain: Domain 1: Networking Concepts (24% weight on the official guide).

Official documentation & study links

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