To facilitate the troubleshooting process, which inbound ICMP message should be permitted on an outside interface?

To facilitate the troubleshooting process, which inbound ICMP message should be permitted on an outside interface?

• echo request
• time-stamp request
• echo reply
• time-stamp reply
• router advertisement

Explanation: By allowing the ICMP echo reply message inbound to the organization, internal users are allowed to ping external addresses (and the reply message allowed to return).

Exam with this question: CCNA Security Chapter 4 Exam Answers
Exam with this question: Network Security ( Version 1) - Network Security 1.0 Modules 8-10: ACLs and Firewalls Group Exam Answers
Exam with this question: CCNA 3 v7 Module 5 Quiz - ACLs for IPv4 Configuration
Exam with this question: CyberOps Associate (Version 1.0) - Module 24: Technologies and Protocols Quiz Answers
Exam with this question: CCNA Security Chapter 4 Exam (CCNAS v1.2)
Exam with this question: Network Defense Module 9.3.2 Technologies and Protocols Quiz
Exam with this question: Network Defense (NetDef) Course Final Exam Answers