Refer to the exhibit. Which Virtual Router Redundancy Protocol （VRRP） statement is true about the roles of the master virtual router and the backup virtual router？（） [" Router A is the master virtual router， and Router B is the backup virtual router. When Router A fails， Router B will become the master virtual router. When Router A recovers， Router B will maintain the role of master virtual router."," Router B is the master virtual router， and Router A is the backup virtual router. When Router B fails， Router A will become the master virtual router. When Router B recovers， it will regain the master virtual router role."," Router A is the master virtual router， and Router B is the backup virtual router. When Router A fails， Router B will become the master virtual router. When Router A recovers， it will regain the master virtual router role."," Router B is the master virtual router， and Router A is the backup virtual router. When Router B fails， Router A will become the master virtual router. When Router B recovers， Router A will maintain the role of master virtual router."]
根据决策面对的约束条件和随机因素，公司决策可划分为（） ["定性决策","确定型决策","定量决策","风险型决策","不确定型决策"]
根据《蒸汽锅炉安全技术监察规程》的规定：对于额定蒸汽压力小于等于3.8MPa的锅炉，安全阀的流道直径不应小于（）。 ["15mm","20mm","25mm","50mm"]
个人住房贷款的期限最长可达（）年，而流动资金贷款的期限最短仅为（）个月。 ["15，12","30，6","30，12","15，6"]
Which three address ranges are used for internal private address blocks as defined by RFC 1918?（） [" 0.0.0.0 to 255.255.255"," 10.0.0.0 to 10.255.255.255"," 172.16.0.0 to 172.16.255.255"," 172.16.0.0 to 172.31.255.255"," 127.0.0.0. to 127.255.255.255"," 192.168.0.0 to 192.168.255.255"," 224.0.0.0 to 239.255.255.255"]
“全或无”特性
