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Which Layer 1 devices can be used to enlarge the area covered by a single LAN segment?（）
- A、Switch
- B、Router
- C、NIC
- D、hub
- E、Repeater
- F、RJ-45 transceiver
参考答案
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The LAN needs are expanding at the Testking corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the TestKing network.Which of the following are layer 1 devices that you can use?（）A. A switch.B. A router.C. A network adapter card.D. A hub.E. A repeater.
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Which Layer 1 devices can be used to enlarge the area covered by a single LAN segment?()
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Which of the following devices can an administrator use to segment their LAN?()
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● Networks can be interconnected by different devices. In the physical layer，networks can be connected by（1）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（2）,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（3）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 two transport connections. Finally，in the application layer， application gateways translate message（4）.As an example， gateways between Internet e-mail and X.400 e-mail must （5）the e-mail message and change various header fields.（1）A.reapersB.relaysC.connectorsD.modems（2）A.framesB.packetsC.packagesD.cells（3）A.specia lB.dependentC.similarD.dissimilar（4）A.syntaxB.semanticsC.languageD.format（5）A.analyzeB.parseC.deleteD.create
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The IoT architecture can be divided into three layers.()is the key layer to realize the foundational capabilities which support the electronic devices interact with physical world.A.Sensing layer
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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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The LAN needs are expanding at the Testking corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the TestKing network.Which of the following are layer 1 devices that you can use?（）A、A switch.B、A router.C、A network adapter card.D、A hub.E、A repeater.
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Which of the following network devices operates on Layer 1 of the OSI model？（）A、HubB、SwitchC、RouterD、Bridge
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Which two statements are correct about Layer 2 broadcast frames?（）A、Layer 2 broadcast frames are processed by all devices on the same VLANB、Layer 2 broadcast frames are are discarded by routers that connect to multiple VLANsC、Layer 2 broadcast frames are relayerd by routers to all connected VLANsD、Layer 2 broadcast frames are relayed by switches to devices on the same VLAN
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Which two characteristics are true of IVRs？ （）A、 They are known as fabric routingB、 They cannot span multiple switchesC、 Their connectivity is supported by Layer 2D、 They enable devices in different VSAN fabrics to communicateE、 They require that multiple switch fabrics be merged before they can function
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Which of the following devices can an administrator use to segment their LAN?（）A、HubsB、RepeatersC、SwitchesD、BridgesE、RoutersF、Media ConvertersG、All of the above
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For what two purposes does the Ethernet protocol use physical addresses？（）A、to uniquely identify devices at Layer 2B、to allow communication with devices on a different networkC、to differentiate a Layer 2 frame from a Layer 3 packetD、to establish a priority system to determine which device gets to transmit firstE、to allow communication between different devices on the same networkF、to allow detection of a remote device when its physical address is unknown
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Which of these statements is correct regarding SSO and Cisco NSF？（）A、 Utilizing Cisco NSF in Layer 2 environments can reduce outages to one to three seconds.B、 Utilizing SSO in Layer 3 environments can reduce outages to one to three seconds.C、 Distribution switches are single points of failure causing outages for the end devices.D、 Utilizing Cisco NSF and SSO in a Layer 2 environment can reduce outages to less than onesecond.E、 NSF and SSO with redundant supervisors have the most impact on outages at the accesslayer.
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In which two locations in an enterprise network can an IPS sensor be placed？ （）A、 bridging VLANs on two switchesB、 bridging two VLANs on one switchC、 between two Layer 2 devices with trunkingD、 between two Layer 2 devices without trunkingE、 between a Layer 2 device and a Layer 3 device with trunking
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Which of these statements is correct regarding SSO and Cisco NSF?（）A、Utilizing Cisco NSF in Layer 2 environments can reduce outages to one to three seconds.B、Utilizing SSO in Layer 3 environments can reduce outages to one to three seconds.C、Distribution switches are single points of failure causing outages for the end devices.D、Utilizing Cisco NSF and SSO in a Layer 2 environment can reduce outages to less than one second.E、NSF and SSO with redundant supervisors have the most impact on outages at the access layer.
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单选题Which of these statements is correct regarding SSO and Cisco NSF？（）A
Utilizing Cisco NSF in Layer 2 environments can reduce outages to one to three seconds.B
Utilizing SSO in Layer 3 environments can reduce outages to one to three seconds.C
Distribution switches are single points of failure causing outages for the end devices.D
Utilizing Cisco NSF and SSO in a Layer 2 environment can reduce outages to less than onesecond.E
NSF and SSO with redundant supervisors have the most impact on outages at the accesslayer.
考题
多选题Which of the following devices can an administrator use to segment their LAN?（）AHubsBRepeatersCSwitchesDBridgesERoutersFMedia ConvertersGAll of the above
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多选题Which Layer 1 devices can be used to enlarge the area covered by a single LAN segment?（）ASwitchBRouterCNICDhubERepeaterFRJ-45 transceiver
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多选题For what two purposes does the Ethernet protocol use physical addresses？（）Ato uniquely identify devices at Layer 2Bto allow communication with devices on a different networkCto differentiate a Layer 2 frame from a Layer 3 packetDto establish a priority system to determine which device gets to transmit firstEto allow communication between different devices on the same networkFto allow detection of a remote device when its physical address is unknown
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单选题Which of these statements is correct regarding SSO and Cisco NSF?（）A
Utilizing Cisco NSF in Layer 2 environments can reduce outages to one to three seconds.B
Utilizing SSO in Layer 3 environments can reduce outages to one to three seconds.C
Distribution switches are single points of failure causing outages for the end devices.D
Utilizing Cisco NSF and SSO in a Layer 2 environment can reduce outages to less than one second.E
NSF and SSO with redundant supervisors have the most impact on outages at the access layer.
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多选题The LAN needs are expanding at the Testking corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the TestKing network.Which of the following are layer 1 devices that you can use?（）AA switch.BA router.CA network adapter card.DA hub.EA repeater.
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多选题In which two locations in an enterprise network can an IPS sensor be placed?（）Abridging VLANs on two switchesBbridging two VLANs on one switchCbetween two Layer 2 devices withtrunkingDbetween two Layer 2 devices withouttrunkingEbetween a Layer 2 device and a Layer 3 device withtrunking
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多选题In which two locations in an enterprise network can an IPS sensor be placed？（）Abridging VLANs on two switchesBbridging two VLANs on one switchCbetween two Layer 2 devices with trunkingDbetween two Layer 2 devices without trunkingEbetween a Layer 2 device and a Layer 3 device with trunking
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多选题Which two statements accurately describe a broadcast domain?（）ABroadcast domains consist of devices that connect to a common switch or hub.BBroadcast domains consist of a group of devices that can be reached by sending a frame addressed to the Layer 2 broadcast address.CBroadcast domains require a gateway device such as a router.DBroadcast domains consist of devices that reside on the same sub-network.
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