ICND1 Infrastructure Services 3 — Questions and Answers
Question 1: Which Syslog severity level indicates the highest (most critical) priority?
- Level 7 - Debug
- Level 0 - Emergencies (Correct answer)
- Level 4 - Warnings
- Level 3 - Errors
Correct answer: Level 0 - Emergencies
Syslog Level 0 (Emergencies) is the most severe, indicating the system is unusable.
Question 2: What Cisco IOS command sends Syslog messages to a remote server at 10.0.0.5?
- logging trap 10.0.0.5
- logging host 10.0.0.5 (Correct answer)
- snmp-server host 10.0.0.5
- debug logging 10.0.0.5
Correct answer: logging host 10.0.0.5
The 'logging host' command directs syslog output to the specified remote syslog server IP address.
Question 3: Which SNMP version introduced encrypted authentication and privacy (DES/AES encryption)?
- SNMPv1
- SNMPv2c
- SNMPv3 (Correct answer)
- SNMPv2u
Correct answer: SNMPv3
SNMPv3 introduced authentication (MD5/SHA) and privacy (DES/AES) to provide secure SNMP communications.
Question 4: An SNMP agent sends an unsolicited notification to the NMS when a threshold is exceeded. What is this message called?
- Get-Request
- Set-Request
- Trap (Correct answer)
- GetBulk
Correct answer: Trap
An SNMP Trap is an unsolicited notification sent by a device agent to the NMS when a specific event occurs.
Question 5: What is the purpose of the SNMP MIB?
- To encrypt SNMP community strings
- To define and organize managed objects on a device (Correct answer)
- To route SNMP traffic between managers
- To authenticate SNMP version 3 users
Correct answer: To define and organize managed objects on a device
The Management Information Base (MIB) is a hierarchical database that defines the objects (variables) that can be managed on a network device.
Question 6: Which protocol does TFTP use for transport, and on which port?
- TCP port 21
- UDP port 69 (Correct answer)
- TCP port 69
- UDP port 21
Correct answer: UDP port 69
TFTP uses UDP port 69 and provides a simple, lightweight file transfer method without authentication.
Question 7: A network administrator uses 'copy tftp flash' on a Cisco router. What is being accomplished?
- Backing up the running config to TFTP
- Downloading an IOS image from a TFTP server to flash memory (Correct answer)
- Uploading flash contents to TFTP
- Copying startup-config to flash
Correct answer: Downloading an IOS image from a TFTP server to flash memory
The 'copy tftp flash' command downloads a file (typically an IOS image) from a TFTP server and stores it in the router's flash memory.
ICND1 Infrastructure Services 3
Which Syslog severity level indicates the highest (most critical) priority?