DevNet Associate (DEVASC) v1.0Network FundamentalsMedium
A developer is creating a script to retrieve device information from a Cisco router using SNMP. The script needs to send requests to the router and receive responses. Which default UDP port is typically used by an SNMP agent on a network device to receive requests?
- A80
- B22
- C443
- D161
Show answer & explanationAnswer & explanation
Correct answer: D. 161
SNMP agents typically listen for incoming requests on UDP port 161. SNMP managers send requests to this port.
Why the other options are wrong
- A. Port 80 is typically used for HTTP (Hypertext Transfer Protocol), not SNMP.
- B. Port 22 is typically used for SSH (Secure Shell), not SNMP.
- C. Port 443 is typically used for HTTPS (HTTP Secure), not SNMP.
SNMP (Simple Network Management Protocol)
SNMP is an application-layer protocol used for managing and monitoring network devices.
- Uses UDP for communication.
- Agents on devices listen for requests on port 161.
- Managers send requests and receive traps/notifications.
Memory trick: Ports are like specific doors for different network services.