ICND1 Infrastructure Maintenance 4 — Questions and Answers
Question 1: Which NTP stratum level indicates a directly connected reference clock source such as an atomic clock?
- Stratum 0 (Correct answer)
- Stratum 1
- Stratum 2
- Stratum 16
Correct answer: Stratum 0
Stratum 0 devices are reference clock sources (atomic clocks, GPS); Stratum 1 servers sync directly to them.
Question 2: A router is configured with 'ntp server 192.168.1.1'. What does this command do?
- Makes the router an NTP master
- Configures the router to synchronize time from the specified NTP server (Correct answer)
- Restricts NTP queries to only that server
- Sets the router as a secondary NTP source
Correct answer: Configures the router to synchronize time from the specified NTP server
The 'ntp server' command designates the IP address of the NTP server the router should synchronize its clock from.
Question 3: Which Syslog severity level indicates the most critical system condition?
- Level 0 (Emergency) (Correct answer)
- Level 3 (Error)
- Level 5 (Notice)
- Level 7 (Debug)
Correct answer: Level 0 (Emergency)
Syslog Level 0 (Emergency) is the highest severity and indicates the system is unusable.
Question 4: What command enables Syslog messages to be sent to a remote Syslog server at 10.0.0.50?
- syslog enable 10.0.0.50
- logging 10.0.0.50 (Correct answer)
- log-server 10.0.0.50
- debug logging 10.0.0.50
Correct answer: logging 10.0.0.50
The 'logging [ip-address]' command in global configuration mode directs Syslog messages to a remote Syslog server.
Question 5: An administrator wants to limit Syslog messages to only warnings and above. Which command accomplishes this?
- logging trap debug
- logging trap informational
- logging trap warnings (Correct answer)
- logging trap emergencies
Correct answer: logging trap warnings
The 'logging trap warnings' command sets the minimum severity level to 4 (Warning), sending levels 0-4 to the Syslog server.
Question 6: Which command verifies NTP synchronization status on a Cisco router?
- show ntp associations (Correct answer)
- show clock detail
- debug ntp packets
- show ntp peers
Correct answer: show ntp associations
The 'show ntp associations' command displays NTP peer relationships and synchronization status including stratum and reference.
Question 7: What is the default Syslog severity level that Cisco IOS logs to the console?
- Emergencies only (Level 0)
- Errors and above (Level 3)
- Debugging (Level 7 — all messages) (Correct answer)
- Warnings and above (Level 4)
Correct answer: Debugging (Level 7 — all messages)
By default, Cisco IOS sends all Syslog messages including debug (Level 7) to the console line.
ICND1 Infrastructure Maintenance 4
Which NTP stratum level indicates a directly connected reference clock source such as an atomic clock?