地上层 aerial layer
Distribution layer: This layer includes LAN-based routers and layer 3 switches . When is a first-hop redundancy protocol needed in the distribution layer?（）
如何在Layer面板上排列对象（）
You need make configuration changes to an existing layer 3 switch in the Company network. On a multilayer Catalyst switch， which interface command is used to convert a Layer 3 interface to a Layer 2 interface？（）
关于papillary layer错误的描述的（）。
“Layer”指的是哪种典型架构（）
QOS一般对流量的分类算法都局限在IP报文的头部，链路层（Layer 2）、网络层（layer 3）和（）
Which three of the protocols below belong to the application layer?（）
通常，一个Web服务可以分为4个逻辑层，分别为数据层（Data Layer）、数据访问层（Data Access Layer）、业务层（Business Layer）和监听者（Listener）。离客户端最近的是监听者，离客户最远的是（）。
In the 7-layer OSI model, which layer switching will take place?（）
A是LAYER1小区，B是LAYER2小区，A-B是互为邻区，以下哪个描述是错的？（）
关于双频网切换（假设1800为LAYER1小区，900为LAYER2小区）以下哪个描述是错的？（）
Which of the following are associated with the application layer of the OSI model？（two.）（）
Compared to the traditional Layer 2 and Layer 3 system, how does the Cisco Catalyst 6500 VSS 1440simplify the network? （）
Which of the following are associated with the application layer of the OSI model (Choose two.)（）。
What benefit results from implementation of Layer 3 switching versus Layer 2 switching in a fully meshed campus network？（）
HCS结构中，一种为8个band和8个layer结构，另一种为noband和3layer结构。
A tornado forms when a layer of warm, dry air is on top of a layer of cool, moist air.
Layer n on one machine carries on a conversation with layer n on another machinE.The rules and conventions used in this conversation are collectively known as the layer n
Access to non-peer layer is available in TCP/IP model, e.g. data link layer can access
SSL（Secure Sockets Layer，安全套接层)，及其继任者传输层安全（Transport Layer Security，TL
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
TCP/IP （）layer protocols provide services to the application（）running on a computer. The application layer does not define the application itself, but rather it defines（）that applications need--lik
