When a bridge transmits an Ethernet frame， the Ethemet frame has ( ) .

[单选题]When a bridge transmits an Ethernet frame, the Ethernet frame. has(75).(75)A． the broadcast address for the its source addressB． the bridge's LAN address for its destination addressC． the bridge's LAN address for its source addressD． none of the ab

[单选题]In HDLC Protocol, when Supervisory Frame's type code is '00'.About the following statements, which is correct.A．Receive ReadyB．Receive not ReadyC．RejectD．Selective Reject

[单选题]frame表示（）。A．符号B．大小C．秒D．帧

[单选题]frame表示（）。A . 符号B . 大小C . 秒D . 帧

[单选题]（） are generally formed in the frame of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.A . DoorsB . Aspirate gauzerC . CouplingD . Blind

[名词解释] 线框（Wire frame）

[单选题]The trend nowadays is to build the frame box as a separate fabricated construction and then, after stress relieving and machining the mating surfaces, to mount it on the _____. This has the advantage of saving weight.A．seatingB．bed-plateC．entablature

[单选题]Such an engine frame helps （） the engine and so protect the bearings from the deformation forces transmitted via the ships double bottom.A . to stiffenB . to softenC . to loosenD . to wear

[名词解释] 读码框( reading frame)

[名词解释] Frame-shiftmutation移码突变