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Computer & Networking BasicsNetwork Diagnostics

The ping utility commonly uses which protocol to test IP reachability?

  • AICMP
  • BFTP
  • CSMTP
  • DARP only across the entire Internet
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Correct Answer: A. ICMP
Explanation: Ping normally sends ICMP Echo Request messages and listens for Echo Reply messages.
Reference: Standard computer networking fundamentals: network diagnostics
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