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单选题
How can mobile devices and wireless networks be secured？（）
A
by securely deploying new applications with appropriate performance levels
B
by providing security that is based on a multilayer，system-level approach
C
by looking subjectively at network traffic for abnormal flows
D
by requiring a host-based hardware application
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考题
As they access the corporate network, mobile and remote users inadvertently can infect the network with(72) and worms acquired from unprotected public networks.A．virusesB．diseaseC．germsD．sickness
考题
With the explosive popularity of mobile devices, we have witnessed a steady increase in demand for mobile date service. In addition mobile users also expect to connect to the Internet for communicate and access to services through the best suitable connection, anywhere and at anytime. Although the seamless roaming capability is well supported in conventional. Cellular communication networks, roaming and interworking technologies are still immature in heterogenous wireless networks. Seamless roaming over heterogenous wireless networks will be an ongoing and improved process, due to the requirements from both end users and network administrators. From the wireless access networks belonging to different administrative domains, mobile users cannot always identify at every instance which network is the best one to access for their service. It is highly demanded to establish a network architecture which can facilitate mobile terminals to access the appropriate network in a cost-effective way. If a mobile user wants to move from one network to another with continuous service, the terminals have to cope with network change to maintain service seamlessly. Quality of service is a major issue that the end users should be provided with the satisfying service, while the network workload and cost should not too much increased. In addition, since end users are provided with numerous service ranging from Voice-over-IP to Video-on-Demand services, it is expected that users can experience the same quality for all the different service. Therefore, the network architecture need to be designed in such a way that the quality mechanism is incorporated so that users are served according to their individual QoS requirements. Based on the paragraph above, at present, seamless roaming over heterogenous wireless network is () in conventional cellular communication networks, Because of (), mobile users cannot always identify at every instance which network is the best one to access for their services. To satisfy the users QoS requirements, the network architecture design should include () A.better thanB.maturer thanC.as good asD.not as good as49.A.the different network administrative domainsB.the same network administrative domains and mobile usersC.mobile usersD.the same network administrative domains50.A.Voice -over -IPB.the quality mechanismC.workloadD.Video-on-Demand请帮忙给出每个问题的正确答案和分析，谢谢！
考题
The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?A．1 network with 254 hostsB．4 networks with 128 hostsC．2 networks with 24 hostsD．6 networks with 64 hostsE．8 networks with 36 hosts
考题
Bluetooth is a universal radio interface in the(71)frequency hand that enables portable electronic devices to connect and communicate wirelessly via short-range, ad hoc networks. Each unit can simultaneously communicate with up to(72)other units per piconet. Moreover, each unit can simultaneously(73)to several piconets. Eliminates the need for wires, cables and connectors for and between cordless or mobile phones, modems, headsets, PDAs, Computers, printers, projectors, local area networks, and so on, and paves the way for new and completely different devices and applications. Technology Characteristics(74)symbol rate exploits maximum available(75)bandwidth。A．1.95GHzB．2.45GHzC．4.45GHzD．11.45GHz
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
考题
Modern computers based on() are millions to billions of times more capable than the early machines，and occupy a fraction of the space。Simple computers are small enough to fit into mobile devices, a mobile computers can be powered by small batteries. Personal computers in their va
A.Central Processing unit
B.integrateD.circuits
C.HarD.disk
D.software integration
考题
As they access the corporate network, mobile and remote users inadvertently can infect the network with （ ）and worms acquired from unprotected public networks.A. sickness
B. disease
C. Germs
D. Viruses
考题
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
B.relays
C.connectors
D.modems
考题
A Bluetooth device can be either a master or a slave and any of the devices within a （请作答此空）can be the master. There is only one master and there can be up to （ ） active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to （ ） parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to （ ） mode before it can become active. Within a network, all （ ） communications are prohibited.A.WIRELESS LAN
B.WIRELESS MAN
C.CELLULAR RADIO NETWORK
D.PICONET
考题
Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies? (Choose two.)（）A、copierB、microwave ovenC、toasterD、cordless phoneE、IP phoneF、AM radio
考题
The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?（）A、1 network with 254 hostsB、4 networks with 128 hostsC、2 networks with 24 hostsD、6 networks with 64 hostsE、8 networks with 36 hosts
考题
How many wlans can a reap support when actively connected to a wireless controller？（）A、8B、32C、4D、16
考题
The cisco wireless location appliance can track up to how many devices？（）A、1000B、2000C、2500D、1500
考题
How can mobile devices and wireless networks be secured？（）A、 by securely deploying new applications with appropriate performance levelsB、 by providing security that is based on a multilayer，system-level approachC、 by looking subjectively at network traffic for abnormal flowsD、 by requiring a host-based hardware application
考题
What is needed to allow IT managers to design， control， and monitor their wireless networks form a centralized location as wireless networks grow in scale and complexity？（）A、 network unificationB、 network managementC、 mobility platformD、 client devices
考题
Which two statements about the Wireless Location Appliance are true？（）A、a Wireless Location Appliance acts as a server to one or more Cisco WCSs. It collects， stores， and passes on data from its associated Cisco WLAN controllersB、before using the Web interface， the initial configuration of the Wireless Location Appliance must be done using the command-line interface （CLI）C、the Cisco 2000， 2700， 4100， and 4400 are examples of Wireless Location Appliance.D、the Wireless Location Appliance visually displays the location information of WLAN devices and forwards this information to third-party applications using the Simple Network devices and forwards this information to third-party applications using the Simple Network Management Protocol （SNMP）E、the Wireless Location Appliance visually tracks up to 15，000 WLAN devices and can store this information for 90 days.
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
考题
You have a computer that runs Windows XP Professional. The computer has an 802. 11g wireless network card. You have a wireless access point that is secured by using WiFi Protected Access (WPA). The service set identifier (SSID) of the wireless access point does not broadcast. You need to establish a wireless connection to the wireless access point. What should you do?（） A、From the Device Manager, open the wireless network adapter properties and click Advanced. B、From the Device Manager, right-click the wireless network adapter and click Scan for hardware changes. C、From the Wireless Network Connection Properties, select View Wireless Networks. D、From the Wireless Network Connection Properties, click Change Advanced Settings. From the Wireless Networks tab, select Add a preferred network.
考题
单选题How can mobile devices and wireless networks be secured？（）A
by securely deploying new applications with appropriate performance levelsB
by providing security that is based on a multilayer，system-level approachC
by looking subjectively at network traffic for abnormal flowsD
by requiring a host-based hardware application
考题
单选题What is needed to allow IT managers to design， control， and monitor their wireless networks form a centralized location as wireless networks grow in scale and complexity？（）A
network unificationB
network managementC
mobility platformD
client devices
考题
单选题Scalability： with the cisco wireless location appliance， 2500 devices including wireless clients or wi-fi tags can be tracked simultaneously， helping ensure that location services can be applied to an entire enterprise environment. Which of the following functions on the wireless lan controller is used to determine whether or not a rogue access point is connected to the same layer 2 network？（）A
rogue detectorB
rogue containmentC
rldpD
ridp
考题
多选题Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies?（）AcopierBmicrowave ovenCtoasterDcordless phoneEIP phoneFAM radio
考题
单选题How many wlans can a reap support when actively connected to a wireless controller？（）A
8B
32C
4D
16
考题
多选题Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies? (Choose two.)（）AcopierBmicrowave ovenCtoasterDcordless phoneEIP phoneFAM radio
考题
单选题The cisco wireless location appliance can track up to how many devices？（）A
1000B
2000C
2500D
1500
考题
单选题The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?（）A
1 network with 254 hostsB
4 networks with 128 hostsC
2 networks with 24 hostsD
6 networks with 64 hostsE
8 networks with 36 hosts
考题
多选题Healthcare providers are increasingly using wireless technologies to enable greater mobility for clinical staff. Which two wireless devices can be used in an integrated medical-grade network？ （）Ahandheld computersBimaging phone devicesCmedia phonesDtablet PCs
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