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LANs can be connected by using bridges, which operate in the(67).
A．data-link layer
B．Physical layer
C．network layer
D．transport layer
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●LANs can be connected by using bridges，which operate in the (67) .(67) A．data-link layerB．Physical layerC．network layerD．transport layer
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LANs can be connected by using bridges, which operate in theA．physical layerB．data link layerC．network layerD．transport layer
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●Networks can be interconnected by different devices．In the physical layer，networks can be connected by (66) or Hubs，which just move the bits from one network to an identical network．One layer up we find bridgas and swiehes,which operate at data link layer．They can accept (67) ，examine the MAC address，and forward the frames to a different network while doing minor protocol translation in the process．In the network layer，we have routers that can connect two netwoks．If two networks have (68) network layer，the router may be able to translate between the packet formats．In the transport layer we find transport gateway，which can interface between the two transport connections．Finally，in the application layer，application gateways translate message (69) ．As an example，gateways between Internet e-mail and X．400 e-mail must (70) the e-mail message and change various header fields．(66) A．reapersB．relaysC．connectsD．modems(67) A．framesB．bytesC．packagesD．cells(68) A．specialB．dependentC．similarD．dissimilar(69) A．syntaxB．semanticsC．languagesD．format(70) A．analyzeB．pairsC．deleteD．create
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Networks can be interconnected by different devices in the physical layer networks can be connected by (71) or hubs．which just move the bits from one network to an identical network．One layer up we find bridges and switches which operate at data link layer．They can accept (72) ，examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process in me network layer，we have routers that can connect two networks，If two networks have (73) network layer，the router may be able to translate betweenthe packer formats．In the transport layer we find transport gateway，which can interface between two transport connections Finally，in the application layer，application gateways translate message (74) ．As an example，gateways between Internet e-mail and X，400 e-mail must (75) thee-mail message and change various header fields．(68)A．reapersB．relaysC．packagesD．modems
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Different quality factors of software can be reflected upon user's different points of view, through product running, product modification and product transformation. Of the following properties, which one is connected with product running?(67).Ⅰ. correctnessⅡ. robustnessⅢ. re-useA．ⅠB．ⅡC．Ⅰ, ⅡD．以上都是
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Networks can be interconnected by different devices. In the physical layer, networks can be connected by(66)or hubs, which just move the bits from one network to an identical network. One layer up we find bridges and switches, which operate at data link layer. They can accept(67), examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have(68)network layer, the router may be able to translate between the packet formats. In the transport layer we fmd transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message(69). As an example, gateways between Internet e-mail and X.400 e-mail must(70)the e-mail message and change various header fields.A．repeatersB．relaysC．connectorsD．modems
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A workstation would MOST likely be connected to an office network using which of the followingcable types?()
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Networks can be interconnected by different devices.In the physical layer, networks can be connected by（ ） or hubs, which just move the bits from one network to an identical network.A.repeaters
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多选题Which two statements are true regarding the USING and ON clauses in table joins?（）ABoth USING and ON clauses can be used for equijoins and nonequijoinsBAmaximum of one pair of columns can be joined between two tables using the ON clauseCThe ON clause can be used to join tables on columns that have different names but compatible data typesDThe WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause
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They must be fully meshedB
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They must be directly connected
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they operate between 150 and 450 rpmB
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eSATAB
BluetoothC
SCSID
Ethernet
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