【单选题】【消耗次数:1】
物理层上所传输的数据单位是( )
比特
分组
数据报
参考答案:
复制
纠错
相关题目
【单选题】 物理层传输的是( )
①  原始比特/物理帧
②  分组
③  信元
④ 
【单选题】 物理层传输的是
①  原始比特/物理帧
②  分组
③  信元
④ 
【单选题】 物理层上信息传输的基本单位称为( ) 。
① 
② 
③ 
④  报文
【单选题】 在OSI参考模型的物理层、数据链路层、网络层传送的数据单位分别为()。
①  比特、帧、分组
②  比特、分组、帧
③  帧、分组、比特
④  分组、比特、帧
【判断题】 CAN数据总线所传输的数据有数据帧、远程帧、错误帧和过载帧4种类型。( )
①  正确
②  错误
【判断题】 三层交换机属于物理层共享设备,可并行进行多个端口对之间的数据传输。
①  正确
②  错误
【单选题】 将传输比特流划分为帧,应属于下列OSI的哪一层处理?()
①  物理层
②  数据链路层
③  传输层
④  网络层
【单选题】 将传输比特流划分为帧,应属于下列OSI的哪一层处理?
①  物理层
②  数据链路层
③  传输层
④  网络层
【判断题】 物理层指为用户提供的具体传输媒体。
①  正确
②  错误
【单选题】 传输层的数据传输单元是( )。
①  帧(Frame)
②  包(Packet)
③  报文(Message)
④  二进制数据比特流 (bits)
随机题目
【单选题】 ____ was evident that Mr. Wang had come back to Shanghai.
①  This
②  He
③  That
④  It
【单选题】 Jack, the boss, asked Steven to leave — ____, she was filed.?
①  whats more ?
②  in addition?
③  on the contrary ?
④  D. in other words ?
【单选题】 He’s never again written ____ as his first one.
①  so good a book
②  such good a book
③  such good book
④  so a good book
【单选题】 “Where do you suggest going?” “We promised ____ the children to the West Lake.”
①  taking
②  to take
③  taken
④  took
【单选题】 Don’t be too ____ about things you are not supposed to know. ?
①  strange ?
②  amusing ?
③  curious ?
④  conscious?
【单选题】 To their surprise, they had much ____ and they even went to the same college. ?
①  in the same ?
②  in common ?
③  all the same ?
④  common things ?
【单选题】 ____ little earlier this morning! I missed the school bus by only a minute and had to wait in the cold for nearly an hour!
①  If I had got up
②  If only I get up
③  If only I had got up
④  If I got up
【单选题】 My son is Andy. My brother’s son is Ben. Andy and Ben are ____.
①  nephews
②  cousins
③  brothers
④  nieces
【单选题】 Education and medical care are very ____ in theUnited States.
①  much
②  cheap
③  many
④  expensive
【单选题】 Since the road is wet this morning, ____ last night. ?
①  it must have rained ?
②  ?it must rain ?
③  it must be raining ?
④  it must have been rained?