题目内容
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[主观题]
施工过程质量控制是指（)的投入与产出过程的质量控制。A．工程产品B．施工作业技术活动C．材料和设
施工过程质量控制是指()的投入与产出过程的质量控制。
A．工程产品
B．施工作业技术活动
C．材料和设备
D．施工活动
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A．Router
B．Bridge
C．Hub
D．Switch
更多“施工过程质量控制是指（)的投入与产出过程的质量控制。A．工程…”相关的问题
第2题
Which one of the following is the most commonly used layer 2 network device？（）
A. Hub
B. Bridge
C. Switch
D. Router
E. Repeaters
F. None of the above
第3题
At which of the following layers does the ICMP protocol operate？（）
A．Layer 1
B．Layer 3
C．Layer 4
D．Layer 5
第4题
In the OSI model, which of the following layers would be the cause of a session time-out while browsing the web？（）
A．Laye r2
B．Layer 3
C．Layer 5
D．Layer 7
第5题
What are two routing requirements for a device to communicate with another device？（）
A. end-to-end communications path
B. hosts on the same Layer 2 broadcast domain
C. hosts on the same Layer 3 broadcast domain
D. routing information on participating Layer 3 devices
第6题
For what two purposes does the Ethernet protocol use physical addresses？ （）
A.to uniquely identify devices at Layer 2
B.to allow communication with devices on a different network
C.to differentiate a Layer 2 frame from a Layer 3 packet
D.to establish a priority system to determine which device gets to transmit first
E.to allow communication between different devices on the same network
F.to allow detection of a remote device when its physical address is unknown
第7题
About selecting PTN device during engineering design, which of the following are corre
A．A.6100 serves as devices at convergence layer.
B．B.9000 is used at core layer.
C．C.6200 is used at access layer and convergence layer.
D．D.6300 is used at convergence layer.
第8题
Which OSI layer is associated with the following: The acknowledgement of transmissions, se
quencing, and flow control across a network？
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A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 5
E. Layer 6
F. Layer 7
第9题
Which of the following layers of the OSI model is the presentation layer？（）
A．Layer 1
B．Layer 5
C．Layer 6
D．Layer 7
第10题
For what two purposes does the Ethernet protocol use physical addresses？（）
A. to uniquely identify devices at Layer 2
B. to allow communication with devices on a different network
C. to differentiate a Layer 2 frame from a Layer 3 packet
D. to establish a priority system to determine which device gets to transmit first
E. to allow communication between different devices on the same network
F. to allow detection of a remote device when its physical address is unknown
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