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单选题
A user reports that when the phone rings in their house the wireless on their laptops becomes disconnected. Which of the following BEST describes the issue?（）
A
The cordless phones are plugged into same outlet as the router
B
The cordless phones are 5.8Ghz which interferes with wireless
C
The cordless phones are 2.4Ghz which interferes with wireless
D
The cordless phones are plugged into the RJ-11 jack
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更多 “单选题A user reports that when the phone rings in their house the wireless on their laptops becomes disconnected. Which of the following BEST describes the issue?（）A The cordless phones are plugged into same outlet as the routerB The cordless phones are 5.8Ghz which interferes with wirelessC The cordless phones are 2.4Ghz which interferes with wirelessD The cordless phones are plugged into the RJ-11 jack” 相关考题
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Ezonexam is installing IP phones in a new office. The phones and office computers connect to the same device. To ensure maximum throughout for the phone data sessions, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers and what technology should be implemented on this device? (Choose two)A. VLANB. SubinterfaceC. STPD. HubE. SwitchF. RouterG. Wireless Access PointH. VTP
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When troubleshooting an 802.11g network. Which of the following can interfere with the network?()
A. 2.4 GHz cordless phoneB. 900 MHz cordless phoneC. Bluetooth headsetD. Bluetooth printer
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An administrator receives reports from users in an office that their 802.11g wireless connectivityhas been problematic since the installation of the new wireless phone system.At which of the following frequencies are both systems operating at to cause this issue?（）A.2.4GHzB.900MHzC.1.1GHzD.5GHz
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A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device?（）A.hubB.routerC.switchD.STPE.subinterfacesF.VLAN
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共用题干
第二篇Cell Phones : Hang Up or Keep Talking?Millions of people are using cell phones today.In many places it is actually considered unusual not to use one.In many countries,cell phones are very popular with young people.They find that the phones are more than a means of communication一having a mobile phone shows that they are cool and connected.The explosions around the world in mobile phone use make some health professionals worried.Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones.In England,there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas.They say that there is no proof that mobile phones are bad for your health.On the other hand,why do some medical studies show changes in the brain cells of some people who use mobile phones?Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case,a traveling salesman had to retire at a young age because of serious memory loss.He couldn't remember even simple tasks.He would often forget the name of his own son.This man used to talk on his mobile phone for about six hours a day,every day of his working week,for a couple of years. His family doctor blamed his mobile phone use,but his employer's doctor didn't agree.What is it that makes mobile phones potentially harmful?The answer is radiation.High-tech machines can detect very small amounts of radiation from mobile phones.Mobile phone companies agree that there is some radiation,but they say the amount is too small to worry about.As the discussion about their safety continues,it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time.Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient,especially in emergencies.In the future,mobile phones may have a warning label that says they are bad for your health.So for now,it's wise not to use your mobile phone too often.People buy cell phones for the following reasons EXCEPT that_________.A:they're popularB:they're usefulC:they're cheapD:they're convenient
考题
A new building has been added to the enterprise campus network， providing client access for desktop PCs， laptops， and IP phones for employees and guests. During verification， only a few laptops using wireless are reported to have problems， while other desktops， IP phones， and most other wireless laptops are fully operational. Additional information received about the problem indicates that， while the problematic wireless laptops cannot reach internal corporate websites， they can reach the Internet. Where should troubleshooting about this connectivity issue be focused？（）A、client network configurationB、VLAN mappingC、routing protocolsD、first-hop redundancy protocol
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A user would like to ensure that only their family and their laptops can access a newly installed wireless router. Which of the following BEST accomplishes this?（）A、MAC filteringB、Disable DHCPC、Static IP addressesD、Port forwarding
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A user reports that when the phone rings in their house the wireless on their laptops becomes disconnected. Which of the following BEST describes the issue?（）A、The cordless phones are plugged into same outlet as the routerB、The cordless phones are 5.8Ghz which interferes with wirelessC、The cordless phones are 2.4Ghz which interferes with wirelessD、The cordless phones are plugged into the RJ-11 jack
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A client states they are receiving poor signal strength on their wireless Internet connection. Which of the following is MOST likely causing the interference?（）A、Cordless phonesB、DrywallC、Access pointsD、MicrowavesE、Fluorescents lights
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An administrator is troubleshooting wireless connectivity issues at a client’s office and discoversthat the machine loses connectivity when the wireless phone is being used. Which of the following WAPS should be installed to help resolve the issue?（）A、802.1 1gB、802.1XC、802.11nD、802.11b
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A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device? (Choose two.)（）A、hubB、routerC、switchD、STPE、subinterfacesF、VLAN
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You have very few Cisco 7920 wireless IP phones on your network， but lots of wireless laptops. Youwant to increase the bandwidth available for the laptops by decreasing the bandwidth reserved forthe Cisco 7920 phones. What is the lowest percentage of voice-allocated bandwidth you can select onthe WLAN controller？（）A、55 percentB、75 percentC、40 percentD、25 percent
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A company is installing IP phones. The phones and office computers connect to the same devicE.To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffiC.What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device? （）A、hubB、routerC、switchD、STPE、subinterfacesF、VLAN
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You have a very few Cisco 7920 wireless IP phones on your network， but lots of wireless laptops.You want to increase the bandwidth available for the laptops by decreasing the bandwidth reserved for the Cisco 7920 phones. What is the lowest percentage of voice-allocated bandwidthyou can select on the WLAN controller？（）A、25 percentB、40 percentC、55 percentD、75 percent
考题
Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies?（）A、copierB、microwave ovenC、toasterD、cordless phoneE、IP phoneF、AM radio
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Which of the following are potential sources of EMI?（）A、Strong magnetsB、Toaster ovensC、Cordless phonesD、Flat panel TVsE、AC power runs
考题
An administrator receives reports from users in an office that their 802.11g wireless connectivity has been problematic since the installation of the new wireless phone system. At which of the following frequencies are both systems operating at to cause this issue?（）A、2.4GHzB、900MHzC、1.1GHzD、5GHz
考题
When troubleshooting an 802.11g network. Which of the following can interfere with the network?（）A、2.4 GHz cordless phoneB、900 MHz cordless phoneC、Bluetooth headsetD、Bluetooth printer
考题
单选题You have very few Cisco 7920 wireless IP phones on your network， but lots of wireless laptops. Youwant to increase the bandwidth available for the laptops by decreasing the bandwidth reserved forthe Cisco 7920 phones. What is the lowest percentage of voice-allocated bandwidth you can select onthe WLAN controller？（）A
55 percentB
75 percentC
40 percentD
25 percent
考题
多选题A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device?（）AhubBrouterCswitchDSTPEsubinterfacesFVLAN
考题
单选题An administrator is troubleshooting wireless connectivity issues at a client’s office and discoversthat the machine loses connectivity when the wireless phone is being used. Which of the following WAPS should be installed to help resolve the issue?（）A
802.1 1gB
802.1XC
802.11nD
802.11b
考题
单选题A new floor has been added to the enterprise campus network， providing client access for desktop PCs， laptops， and IP phones for employees and guests. During verification， a few desktop PCs have limited corporate access but not Internet access. Most other desktop PCs， all laptops， and IP phones are working correctly. Additional information indicates that the desktop PCs are obtaining IP host addresses from the DHCP server， which is intended for only the IP phones. Where should troubleshooting about this connectivity issue be focused？（）A
DNSB
first-hop redundancy protocolC
DHCP server and optionsD
VLAN mappingE
client network configurationF
routing protocols
考题
单选题A new building has been added to the enterprise campus network， providing client access for desktop PCs， laptops， and IP phones for employees and guests. During verification， only a few laptops using wireless are reported to have problems， while other desktops， IP phones， and most other wireless laptops are fully operational. Additional information received about the problem indicates that， while the problematic wireless laptops cannot reach internal corporate websites， they can reach the Internet. Where should troubleshooting about this connectivity issue be focused？（）A
client network configurationB
VLAN mappingC
routing protocolsD
first-hop redundancy protocol
考题
单选题When troubleshooting an 802.11g network. Which of the following can interfere with the network?（）A
2.4 GHz cordless phoneB
900 MHz cordless phoneC
Bluetooth headsetD
Bluetooth printer
考题
单选题You have very few Cisco 7920 wireless IP phones on your network， but lots of wireless laptops. You want toincrease the bandwidth available for the laptops by decreasing the bandwidth reserved for the Cisco 7920phones. What is the lowest percentage of voice-allocated bandwidth you can select on the WLANcontroller？（）A
25 percentB
40 percentC
55 percentD
75 percent
考题
单选题A user would like to ensure that only their family and their laptops can access a newly installed wireless router. Which of the following BEST accomplishes this?（）A
MAC filteringB
Disable DHCPC
Static IP addressesD
Port forwarding
考题
单选题An administrator receives reports from users in an office that their 802.11g wireless connectivity has been problematic since the installation of the new wireless phone system. At which of the following frequencies are both systems operating at to cause this issue?（）A
2.4GHzB
900MHzC
1.1GHzD
5GHz
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