350-401 Question 209
Select 3A network engineer is troubleshooting a connectivity issue between two routers in an enterprise network. The engineer suspects that there is a problem with routing between the two devices. Which two tools should the engineer use to diagnose the issue and confirm the routing problem?
- A
Ping to test connectivity between the devices
- B
Traceroute to trace the path packets take between the devices
- C
SNMP to monitor CPU and memory utilization on the routers
- D
Conditional debug to capture routing protocol exchanges
- E
Syslog to review historical logs for routing-related errors
Show answer and explanation
Correct answers: A, B, D
Explanation
To diagnose routing issues, tools like traceroute (to identify the path and detect failures), ping (to confirm basic connectivity), and conditional debug (to capture live routing protocol details) are essential. SNMP and syslog are supplementary tools that provide device health and historical data but are not directly used for routing diagnostics.
- A. Correct.
Ping is a foundational tool to test basic connectivity, which helps confirm if the devices are reachable. However, it does not directly diagnose routing issues.
- B. Correct.
Traceroute is useful for identifying the path packets take and detecting where routing may fail or be misconfigured.
- C. Incorrect.
SNMP is a monitoring protocol used for gathering performance data like CPU and memory utilization. While helpful for general device health, it is not specific to diagnosing routing issues.
- D. Correct.
Conditional debug allows the engineer to capture detailed routing protocol information, such as OSPF or EIGRP exchanges, to pinpoint routing misconfigurations or failures.
- E. Incorrect.
Syslog provides historical logs, which can indicate errors or warnings related to routing. While useful for retrospective analysis, it does not actively test or diagnose routing issues.