多项选择题
WhichtwostatementsaboutJUNOSSoftwarepackethandlingarecorrect？（）
A.JUNOSSoftwareappliesserviceALGsonlyforthefirstpacketofaflow.
B.JUNOSSoftwareusesfast-pathprocessingonlyforthefirstpacketofaflow.
C.JUNOSSoftwareperformsrouteandpolicylookuponlyforthefirstpacketofaflow.
D.JUNOSSoftwareappliesSCREENoptionsforbothfirstandconsecutivepacketsofaflow.