ARP query packet is encapsulated in ____
A: a link-layer frame addressed
to a specific adapter
B: an IP datagram
C: a link-layer broadcast frame
D: none of the above
举一反三
- What is the name of a link-layer packet? （ ） A: message B: segment C: datagram D: frame
- In the network layer, the transmission is ( ). A: bit stream B: message C: packet D: frame
- 物理层、数据链路层、网络层和传输层的数据传输单位分别是 A: Byte,frame,datagram,TPDU B: it,datagram,packet,TPDU C: it,frame,datagram,packet D: it,frame,datagram,segment
- Flow control is one of the basic functions of the data link layer. Regarding flow control, which one is correct among following statements? A: Only the data link layer has flow control B: Not only the data link layer has flow control, but the flow control objects of each layer are the same C: Not only does the data link layer have flow control, but the flow control objects of each layer are different D: None of the above is right
- What is the name of a network-layer packet? （ ） A: message B: segment C: datagram D: frame
内容
- 0
Point to Point Protocol is a _______________. A: session layer Protocol B: transport layer Protocol C: data link layer Protocol
- 1
The WDM transmission network consists of three layers: Physical Layer、Data Link Layer and Network Layer.
- 2
When an IP packet is Layer 3-switched from a source in one VLAN to a destination in another VLAN,which field in a packet will be rewritten? （） A: Layer 2 TTL B: Layer 3 TTL C: Layer 3 source address D: Layer 3 transport protocol E: Layer 3 destination addre
- 3
如下图，一名管理员ping默认网关发现如下输出，最有可能是那一层OSI出问题？（） A: data link layer B: application layer C: access layer D: session layer E: network layer
- 4
In the following four descriptions, which one is correct? () A: If<br/>one host’s transport layer uses TCP, then its network layer<br/>must use virtual-circuit network. B: Datagram<br/>network provides connection service C: The<br/>transport-layer connection service is implemented in the router D: The<br/>network-layer connection service is implemented in the router as well<br/>as in the end system.