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(ISC)2

CERTIFIED-IN-CYBERSECURITY · Question #107

Which of these addresses is commonly reserved specifically for broadcasting?

The correct answer is B. 192.255.121.255. IPv4 addresses are 32-bits represented as a sequence of four 8-bit integers separated by a dot. Addresses ending with 0 are reserved to specifically signify the network itself (and not a specific device on that network). In contrast, addresses ending in 255 are generally…

Network Security

Question

Which of these addresses is commonly reserved specifically for broadcasting?

Options

  • A192.255.121.0
  • B192.255.121.255
  • C192.255.121.14
  • D192.255.121.254

How the community answered

(38 responses)
  • A
    5% (2)
  • B
    92% (35)
  • C
    3% (1)

Explanation

IPv4 addresses are 32-bits represented as a sequence of four 8-bit integers separated by a dot. Addresses ending with 0 are reserved to specifically signify the network itself (and not a specific device on that network). In contrast, addresses ending in 255 are generally reserved for broadcasting to all devices on that network (see ISC2 Study Guide, chapter 4, module 1).

Topics

#IPv4 Addressing#Networking Fundamentals#Broadcast Address

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