Which three statements about Syslog utilization are true?（）

• A、Utilizing Syslog improves network performance.
• B、The Syslog server automatically notifies the network administrator of network problems.
• C、A Syslog server provides the storage space necessary to store log files without using router disk space.
• D、There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages.
• E、Enabling Syslog on a router automatically enables NTP for accurate time stamping。
• F、A Syslog server helps in aggregation of logs and alerts.