CREST Practitioner Security Analyst (CPSA) Practice

Disable ads (and more) with a membership for a one time $2.99 payment

Master the CREST Practitioner Security Analyst Exam. Prepare with quizzes and comprehensive study guides that include tips and explanations. Excel in your certification journey!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the hexadecimal length of an IPv6 address?

32 bits
48 bits
128 bits
64 bits

The correct answer is: 128 bits

An IPv6 address is expressed as a 128-bit identifier, which is crucial for enabling a vast number of unique IP addresses necessary for the expanding internet landscape and the proliferation of connected devices. The 128 bits are typically represented in hexadecimal notation, divided into eight groups of four hexadecimal digits, separated by colons. Each hexadecimal digit represents four bits, so when you multiply the number of hexadecimal digits (32) by the number of bits they represent (4), you get the full 128 bits that constitute the IPv6 address. This significantly expands the addressing capabilities compared to the previous version, IPv4, which is limited to 32 bits. In contrast, the other options do not correctly represent the length of an IPv6 address. Bits representation such as 32, 48, or 64 do not encompass the full range and distinct segmentation used in IPv6 addressing. Understanding this fundamental concept of IPv6 structure is essential for anyone involved in network security and analysis.