SSCP: Systems Security Certified PractitionerDemo

By ISC · Question Mode

QuestionQ919

Network and Communications Security

Before CIDR (Classless Internet Domain Routing), networks were commonly arranged into classes. Which of the following would have been true for a Class B network?

  • A The first bit of the IP address would be set to zero.
  • B The first bit of the IP address would be set to one and the second bit set to zero.
  • C The first two bits of the IP address would be set to one, and the third bit set to zero.
  • D The first three bits of the IP address would be set to one.
Explanation

Class B IPv4 addresses use the leading binary prefix 10, meaning the first bit is one and the second bit is zero.

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