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【单选题】
高温红色预警信号含义：24小时内最高气温将升至（）以上。A.
35℃
B.
37℃
C.
40℃
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举一反三
【简答题】操作系统提供给应用程序的接口是( ).
【单选题】Scientists have made a new computer program ________ allows the computer to cry out for help if someone has stolen it. [ ]
A.
who
B.
which
C.
what
D.
when
【单选题】A new Ezonexam switch is installed into an existing LAN and a new VTP trunk is set up with an existing switch. Which VLANs will be allowed on this new trunk?
A.
All defined VLANs are allowed on the trunk by default.
B.
Each VLAN, or VLAN range, that is specified with the switchport mode command.
C.
Each VLAN, or VLAN range, that is specified with the vtp domain command.
D.
Each VLAN, or VLAN range, that is specified with the vlan database command.
E.
None of the above
【单选题】A personal computer attached to a LAN is referred to as a _________ .
A.
host
B.
router
C.
gateway
D.
node
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