Which character in the output of a traceroute operation indicates that a packet is dropped because of a configured packet filter?
- "U"
- "I"
- "A"
- "H"
Explanation: In a Cisco traceroute operation, specific characters are used to diagnose where a packet flow is being interrupted. The character "A" stands for "Administratively Prohibited," indicating that the packet was dropped because of a configured packet filter, such as an Access Control List (ACL).
While the provided sources explain the underlying mechanism of traceroute—sending UDP datagrams with increasing TTL values until an ICMP "port unreachable" is received—and demonstrate the use of the asterisk (*) to indicate a timeout, they do not explicitly list the full table of response codes in the current excerpts. However, in standard Cisco network diagnostics:
- A: Indicates the packet was blocked by an administrative filter (ACL).
- H: Indicates the Host is unreachable.
- U: Indicates a Port unreachable message was received, which typically signals that the packet successfully reached the destination host.
- I: Indicates the operation was interrupted by the user.
Related exam: Modules 17 – 20: Checkpoint Exam: Virtualization and Network Services Answers (CCNP ENCOR v9)
