Layer命令用于（ ）
A. 创建新图层
B. 指定颜色与线型
C. 列出以前所建图层
D. 以上都是
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Layer命令用于（ ）
A.创建新图层 B.指定颜色与线型 C.列出以前所建图层 D.以上都是
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LAyer Style（图片样式）图层样式不能用于背景层中
A.对 B.错
答案
LAyer Style（图片样式）图层样式不能用于背景层中
A.正确 B.错误
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_____ layer just above the internet layer.
A.Network Interface B.TCP C.Host-to-Host Transport D.pplication
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Which of these network devices primarily functions at the OSI Network layer（layer 3）（）
A.Switch B.Gateway C.Router D.All of the above
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中国大学MOOC: S-layer是Slimer layer的缩写。
答案
Routers perform the decision process that selects what path a packet takes. These （ ） layer devices participate it the collection and distribution of network-layer information, and perform Layer 3 switching based on the contents of the network layer （ ） of each packet. You can connect the routers directly by point-to-point （ ） or local-area networks, or you can connect them by LAN or WAN switches. These Layer 2 switches unfortunately do not have the capability to hold Layer 3 （ ） information or to select the path taken by a packet through analysis of its Layer 3 destination address. Thus, Layer 2 switches be involved in the Layer 3 packet （ ） decision process.
A.switching B.processing C.forwarding D.connecting
答案
Routers perform the decision process that selects what path a packet takes. These （ ） layer devices participate it the collection and distribution of network-layer information, and perform Layer 3 switching based on the contents of the network layer （ ） of each packet. You can connect the routers directly by point-to-point （ ） or local-area networks, or you can connect them by LAN or WAN switches. These Layer 2 switches unfortunately do not have the capability to hold Layer 3 （ ） information or to select the path taken by a packet through analysis of its Layer 3 destination address. Thus, Layer 2 switches be involved in the Layer 3 packet （ ） decision process.
A.application B.network C.physical D.link
答案
Routers perform the decision process that selects what path a packet takes. These （ ） layer devices participate it the collection and distribution of network-layer information, and perform Layer 3 switching based on the contents of the network layer （ ） of each packet. You can connect the routers directly by point-to-point （ ） or local-area networks, or you can connect them by LAN or WAN switches. These Layer 2 switches unfortunately do not have the capability to hold Layer 3 （ ） information or to select the path taken by a packet through analysis of its Layer 3 destination address. Thus, Layer 2 switches be involved in the Layer 3 packet （ ） decision process.
A.medium B.links C.switches D.carriers
答案
执行“Edit (编辑)>Split Layer (分离图层)”菜单命令(快捷键为Ctrl+Shift+D)，可以把图层在当前时间处分离开。（）
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57.NR下，DL Layer mapping的时候当layer数大于（），codeword才是双流
1.5GNR下，DL Layer mapping的时候当layer数大于（），codeword才是双流
allfor命令可用于执行startupasp命令（）
5GNR下，DL-Layer-mapping的时候当layer数大于4，codeword才是双流。
“Layer”指的是哪种典型架构（）
Which layer does the switch work on?
Layer指的是哪种典型架构（）
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In TCP/IP architecture, the PDU in network layer is（）
( ) is not used on perception layer of Internet of Things.
语法判断 To start with, according to Lemma 2, the number of saved candidate nodes at each searching layer is upper bounded by the summation of searching sizes at the previous layer.
IPConfig命令用于检查_______
命令适用于( )
“标高”命令可用于（）
命令与数据输人区，用于（）输入命令或数据
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