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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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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 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.
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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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