SSCP Question #872: Real Exam Question with Answer & Explanation

The correct answer is A: 32 bits long.. IPv4 addresses are 32 bits (4 bytes) long, expressed as four 8-bit octets in dotted-decimal notation (e.g., 192.168.1.1). This gives a theoretical address space of about 4.3 billion addresses. IPv6 was introduced to address IPv4 exhaustion and uses 128-bit addresses (C). 64-bit (

Submitted by dimitri_ru· Apr 18, 2026Network and Communications Security

Question

How long are IPv4 addresses?

Options

A32 bits long.
B64 bits long.
C128 bits long.
D16 bits long.

Explanation

IPv4 addresses are 32 bits (4 bytes) long, expressed as four 8-bit octets in dotted-decimal notation (e.g., 192.168.1.1). This gives a theoretical address space of about 4.3 billion addresses. IPv6 was introduced to address IPv4 exhaustion and uses 128-bit addresses (C). 64-bit (B) and 16-bit (D) address lengths do not correspond to any standard IP version.

Topics

#IPv4 addressing#Network protocols#Network fundamentals#TCP/IP

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