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13、 通常我们把传输层、网络层、数据链路层、物理层的数据依次称为（ ）A. 帧（frame），数据包（packet），段（segment），比特流（bit ）B. 段（segment），数据包（packet ），帧（frame），比特流（bit ）C. 比特流（bit ），帧（frame），数据包（packet ），段（segment）D. 数据包（packet），段（segment），帧（frame），比特流（bit ）
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When referring to the data structures of a packet, what is the proper term to refer to a single unit of TCP data at the transport layer?当提及一个数据包结构时，以下哪项可以表示一个TCP包在传输层的单个数据单元？（）A、TCP segment.TCP段B、TCP packet.TCP包C、TCP frame.TCP帧D、TCP datagram.TCP报文
考题
通常我们把传输层.网络层.数据链路层.物理层的数据依次称为（）。A、帧（frame)，数据包（packet），段（segment），比特流（bit）B、段（segment），数据包（packet），帧（frame)，比特流（bit）C、比特流（bit），帧（frame)，数据包（packet），段（segment）D、数据包（packet），段（segment），帧（frame)，比特流（bit）
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GPRS的英文全称为（）A、Global.Packet.Radio.ServiceB、General.Packet.Radio.SystemC、General.Packet.Radio.ServiceD、Global.Packet.Radio.System
考题
How does an IPv6 router deal with a packet that is larger than the outgoing interface MTU？（）A、It will fragment the packet at Layer 2.B、It will fragment the packet at Layer 3.C、It will drop the packet and send an ICMPv6 message "packet too big" back to the source.D、It will drop the packet.
考题
Refer to the exhibit. A router has a 256 kbps Frame Relay circuit connected to interface serial 0/0. As a large FTP packet is being placed into the hardware transmit queue of interface serial 0/0， a voice packet is placed into the priority queue of that interface. How， and in what order， wi the packets be transmitted？（）A、the voice packet will be transmitted first， followed by the FTP packet in its entiretyB、the voice packet will be transmitted first， followed by the fragmented FTP packetC、the FTP packet will be fragmented and the voice packet will be interleavedD、the FTP packet will be transmitted first in its entirety， follow by the voice packet
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Man-in-the-Middle类攻击可细分为（）。A、Packet capturingB、Packet alterationC、Packet injectionD、Connection hijackingE、Packet insert
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GPRS的英文全称为（）A、Global Packet Radio ServiceB、General Packet Radio SystemC、General Packet Radio ServiceD、Global Packet Radio System
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下面那些告警说明2M业务在PTN内部传送不通（）。A、CONTEXT_FAIL建链失败B、PPILOS：PDH物理接口信号丢失C、CONTEXT_PACKET_LOS本端链路包丢失D、RCONTEXT_PACKET_LOS远端链路包丢失
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GPRS正确的的英文全称描述：（）A、Global Packet Radio ServiceB、General Packet Radio ServiceC、General Packet Radio SystemD、Global Packet Radio System
考题
下面哪些项属于非实时业务的参数。（）A、call/session：每次会话的呼叫次数；B、packet/call：每次呼叫的包个数；C、packetsize：包的大小；D、callinterval：呼叫间隔，
考题
给了两段documentation里的描述，问这个时候发哪种类型的ICMP包。 The interface on which the packet comes into the router is the same interface on which the packet gets routed out. The subnet or network of the source IP address is on the same subnet or network of the next-hop IP address of the routed packet.
考题
A router receives a packet on interface 172.16.45.66/26. The source IP of the packet is 172.16.45.127/26 and the destination is 172.16.46.191/26.How will the router handle the packet?（）A、The destination is a host on another subnet, so the router will not forward the packet.B、The destination is a host on the same subnet, so the router will forward the packet.C、The destination is a broadcast address, so the router will not forward the packet.D、The destination is a network address, so the router will forward the packet.
考题
问答题给了两段documentation里的描述，问这个时候发哪种类型的ICMP包。 The interface on which the packet comes into the router is the same interface on which the packet gets routed out. The subnet or network of the source IP address is on the same subnet or network of the next-hop IP address of the routed packet.
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单选题Refer to the exhibit. A router has a 256 kbps Frame Relay circuit connected to interface serial 0/0. As a large FTP packet is being placed into the hardware transmit queue of interface serial 0/0， a voice packet is placed into the priority queue of that interface. How， and in what order， wi the packets be transmitted？（）A
the voice packet will be transmitted first， followed by the FTP packet in its entiretyB
the voice packet will be transmitted first， followed by the fragmented FTP packetC
the FTP packet will be fragmented and the voice packet will be interleavedD
the FTP packet will be transmitted first in its entirety， follow by the voice packet
考题
单选题IPsec以（）为单位对信息进行加密的方式。A
IP Packet小包B
链路帧C
TCP包D
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