单选题For which network anomaly does Junos provide a SCREEN?（）Aa telnet to port 80Ba TCP packet with the SYN and ACK flags setCan SNMP getnext requestDan ICMP packet larger than 1024 bytes
单选题
For which network anomaly does Junos provide a SCREEN?（）
A
a telnet to port 80
B
a TCP packet with the SYN and ACK flags set
C
an SNMP getnext request
D
an ICMP packet larger than 1024 bytes
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