PTN指的是Packet Transport Network（分组传送网络）。
PTN指的是Packet Transport Network（分组传送网络）。
相关考题：
A Next Generation Network(NGN) is a () network ,which is able to provide Telecomunication Services ti users and to make use of multiple broadband, QoS-enable transport technologies and in which service-related functions are (下题选择) of the underlying transport-related technologies.A.ISDNB.ATMC.circuit-basedD.packet-based
Together with the network layer,the transport layer is the heart of the protocol（ ）The network layer provides end-to-end（ ） delivery using datagrams or virtual circuits.The transport layer builds on the network layer to provide data transport from a process on a（ ）machine to a process on a destination machine with a desired level of reliability that is independent of the physical （ ） currently in use.It provides the abstractions that applications nedd to use the network..Without the（ ） layer,the whole concept of layered protocols would make little sense.A.transport B.network C.hierarchy D.service A.packet B.data C.command D.record A.connection B.terminal C.source D.destination A.traffic B.connection C.lines D.networks A.network B.transport C.link D.physical
Which of the following statements regarding routed and routing protocols are true?() A. A routed protocol is assigned to an interface and determines the method of packet deliver.B. A routing protocol determines the path of a packet through a network.C. A routed protocol determines the path of a packet through a network.D. A routing protocol operates at the transport layer of the OSI model.E. A routed protocol updates the routing table of a router.
Part of the job as a network administrator is being able to make a distinction between routed protocols and routing protocols. Which of the following statements is true regarding them?() A. A routing protocol is assigned to an interface and determines the method of packet delivery.B. A routed protocol is assigned to an interface and determines the method of packet delivery.C. A routing protocol determines the path of a packet through a network.D. A routed protocol determines the path of a packet through a network.E. A routing protocol operates at the transport layer of the OSI model.F. A routed protocol updates the routing table of a router.
You are the Cisco Network Designer in Cisco.com. Which of these is a Layer 2 transport architecture that provides packet－based transmission optimized for data based on a dual ring topology?() A. DynamicTrunking ProtocolB. Resilient Packet RingC. Synchronous Digital HierarchyD. Coarse Wave Division Multiplexing
PTN： Packet Transport Network（分组传送网络） ，其中Packet（分组）是指具备（）、多业务（IP化业务）接入、业务带宽共享和分类QOS保障管理能力。 A、IP化分组内核B、大颗粒交换内核C、光信号交换内核
What is a static packet-filtering firewall used for ？（）A、It validates the fact that a packet is either a connection request or a data packet belonging to a connectionB、It evaluates network packets for valid data at the application layer before allowing connectionsC、It analyzes network traffic at the network and transport protocol layersD、It keeps track of the actual communication process through the use of a state table
关于PTN的描述，以下正确的是：（）A、PTM是一种以分组作为传送单位的技术B、PTN以承载电信级以太网业务为主，兼容TDM、ATM和FC等业务的综合传送技术C、PTN技术基于分组的架构，继承了MSTP的理念，融合了Ethernet和MPLS的优点，是下一代分组承载的技术
关于PTN的描述，以下正确的是（）.A、PTN是一种以分组作为传送单位的技术；B、PTN以承载电信级以太网业务为主，兼容TDM、ATM和FC等业务的综合传送技术；C、PTN采用刚性管道承载分组业务，很好的解决IP业务在传送网的承载问题；D、PTN技术基于分组的架构，继承了MSTP的理念，融合了Ethernet和MPLS的优点，是下一代分组承载的技术。
OSI参考模型有哪些层，按顺序（）A、Application、session、transport、network、physical、physical、datalinkB、Application，presentation，session，network，transport，datalink，physicalC、Application，presentation，session，transport，network，datalink，physicalD、Application，session，transport，physical、network、physical、datalink
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
PTN： Packet Transport Network（分组传送网络） ，其中Transport（传送）：是指具备类SDH的保护机制，可实现（）的业务快速倒换；具备类SDH的OAM网络监控维护管理功能；可提供完善的时钟和时间同步方案。 A、 50msB、 30msC、 20msD、 10ms
PTN： Packet Transport Network（分组传送网络） ，其中Network（网络）：是指支持（）和业务管理端到端。 A、业务端到端配置B、传送数据全网配置C、业务多端口配置
You are the Cisco Network Designer in Cisco.com. Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual ring topology?（）A、DynamicTrunking ProtocolB、Resilient Packet RingC、Synchronous Digital HierarchyD、Coarse Wave Division Multiplexing
多选题Part of the job as a network administrator is being able to make a distinction between routed protocols and routing protocols. Which of the following statements is true regarding them?（）AA routing protocol is assigned to an interface and determines the method of packet delivery.BA routed protocol is assigned to an interface and determines the method of packet delivery.CA routing protocol determines the path of a packet through a network.DA routed protocol determines the path of a packet through a network.EA routing protocol operates at the transport layer of the OSI model.FA routed protocol updates the routing table of a router.
单选题What is a static packet-filtering firewall used for ？（）AIt validates the fact that a packet is either a connection request or a data packet belonging to a connectionBIt evaluates network packets for valid data at the application layer before allowing connectionsCIt analyzes network traffic at the network and transport protocol layersDIt keeps track of the actual communication process through the use of a state table
多选题Which of the following statements regarding routed and routing protocols are true?（）AA routed protocol is assigned to an interface and determines the method of packet deliver.BA routing protocol determines the path of a packet through a network.CA routed protocol determines the path of a packet through a network.DA routing protocol operates at the transport layer of the OSI model.EA routed protocol updates the routing table of a router.
单选题You are the Cisco Network Designer in Cisco.com. Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual ringtopology？（）A Dynamic Trunking ProtocolB Resilient Packet RingC Synchronous Digital HierarchyD Coarse Wave Division Multiplexing