Which of the following is a loopback address?

  • 00-21-86-5C-B4-6C
  • ::127:0:0:1
  • 127.0.0.1
  • ::0

CompTIA Network+ N10-006
  • Network Architecture
  • Network operations
  • Network security
  • Troubleshooting
  • Industry standards, practices, and network theory
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