Cisco Certified Network Associate (CCNA) Practice Exam

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On which port does Syslog operate by default?

UDP 514
TCP 22
TCP 80
TCP 6514

The correct answer is: UDP 514

Syslog operates by default on UDP port 514. This is the standard port designated for Syslog messages, allowing network devices and servers to send their logs or message data to a central logging server for monitoring and management purposes. Utilizing UDP for Syslog allows for a lightweight, connectionless protocol which is typically preferred for logging, as it reduces overhead and allows for faster transmission of logs. The other options listed involve different protocols or purposes. TCP 22 is typically reserved for Secure Shell (SSH) connections, TCP 80 is used for HTTP web traffic, and TCP 6514 is designated for Syslog over TLS, which is a secure version of Syslog. However, the default configuration for Syslog primarily operates over UDP port 514, which is why this choice is accurate.