Which statement is correct regarding the operation of DHCP?()
A DHCP client uses a ping to detect address conflicts.
B. A DHCP server uses a gratuitous ARP to detect DHCP clients.
C. A DHCP client uses a gratuitous ARP to detect a DHCP server.
D. If an address conflict is detected, the address is removed from the pool and an administrator must resolve the conflict.
E. If an address conflict is detected, the address removed from the pool for an amount of time configurable by the administrator.
F. If an address conflict is detected, the address is removed from the pool and will not be reused until server is rebooted.
SF6电压互感器检修,SF6气体处理不正确的是()。
A. 抽真空时要有专人负责,在真空泵进气口配置电磁阀,防止误操作而引起的真空泵油倒灌
B. 被抽真空气室附近有高压带电体时,主回路应可靠接地
C. 抽真空的过程中,可以对设备进行加压试验
D. 避免装有SF6气体的气瓶靠近热源或受阳光暴晒