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
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
相关考题：
【In the forthcoming years,Beyond-3G(B3G) environments will undoubtedly be deployed in most parts around the globe, permitting a world class solution for network interconnection, A B3G context enables the efficient cooperation of existing wireless technologies, including cellular-based(e.g. 2G/3G), broadcast-oriented(e.g. DVB)-in specific DVB-H, and Internet-based(WLAN/WMAN)networks, all relying on enhanced IP as the unifying layer. Hence, in this particular and yet to be deployed environment, mobile, systems and platforms will permit to provide enhanced services to all applications across heterogeneous access networks. This will effectively enlarge the scope of service deployment, availability and accessibility to the users】 Based on the paragraph above, it is shown that (98) will be used as the higher layer protocol to unify cellular networks ,broadcast networks and (99) networks, which is enabled by the context of (100).A. mobile systems and platformsB.3GC.heterogeneous access networksD.enhanced IP
How could the Ezonexam corporation benefit from using VLANs on their network?(Select three answer choices.)A. VLANs allow access to network services based on department, not physical location.B. VLANs utilize packet filtering to enhance network security.C. VLANs provide a low-latency, high bandwidth internetworking alternative.D. VLANs provide a method of communication between IP addresses in large networks.E. VLANs establish segmented broadcast domains in switched networks.F. VLANs can greatly simplify adding, moving, or changing hosts on the network.
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
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！
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
How could a large corporation with many specialized divisions benefit from using VLANs on their networks?() A. VLANs allow access to network services based on department, not physical location.B. VLANs utilize packet filtering to enhance network security.C. VLANs provide a low-latency, high bandwidth internetworking alternative.D. VLANs provide a method of communication between IP addresses in large networks.E. VLANs establish segmented broadcast domains in switched networks.F. VLANs can greatly simplify adding, moving, or changing hosts on the network.
Whatarethreeadvantages ofVLANs?() A.VLANs establish broadcast domains in switched networks.B.VLANs utilize packet filtering to enhance network security.C.VLANs provide a method of conserving IP addresses in large networks.D.VLANs provide a low-latency internetworking alternative to routed networks.E.VLANs allow access to network services based on department,not physical location.F.VLANs can greatly simplify adding,moving,or changing hosts on the network.
Which of the following is NOT true of security attacks?[A] Employees will keep up with security polices and awareness if they are highly-trained.[B] The rate of security attacks appears faster than the growth of the Internet.[C] One's computer system will never be secure.[D] Vulnerabilities can go through phones, wireless devices, and network appliances
共用题干HackThe first big-name hackers included Steve Wozniak,Bill Gates and Linus Torvalds,all now highly recognizable names behind many of the computer technologies used today.These early hackers had a love of technology and a compelling need to know how it all worked,and their goal was to push programs beyond what they were designed to do.Back then,the word“hacker”didn't have the negative connotation it has today.The original hacker ethic,rooted out of simple curiosity and a need to be challenged,appears to be dead.The objectives of early hackers are a far cry from the goals of today's hackers.The motivation of the new breed of hackers appears not to be curiosity,or a hunger for knowledge,as it used to be.Instead,most of today's hackers are driven by greed,power,revenge,or some other malicious intent,treating hacking as a game or sport,employing the tools that are readily available via the Internet.The rate of security attacks is actually outpacing the growth of the Internet.This means that something besides the growth of the Internet is driving the rise in security attacks.Here are some realities you should know about:Operating systems and applications will never be secure.New vulnerabilities will be introduced into your environment every day.And even if you ever do get one operating system secure,there will be new operating systems with new vu1nerabilities-phones,wireless devices,and network appliances.Employees will never keep up with security policies and awareness.It doesn't matter how much you train and educate your employees.if your employees disregard warnings about the hazards of opening questionable e-mail attachments,how are you going to educate them about properly configuring firewalls and intrusion detection systems for their PCs?Managers have more responsibility than ever.And on top of the realities listed above,security managers are being asked to support increasing degrees of network availability and access.There are some good security measures you can take:Employ a layer 7,full-inspection firewall.Automatically update your anti-virus at the gateway,server and client.Keep all of your systems and applications updated.Hackers commonly break into a website through known security holes,so make sure your servers and applications are patched and up to date.Turn off unnecessary network services.Eliminate all unneeded programs.Scan network for common backdoor services一use intrusion detection systems, vulnerability scans,anti-virus protection.Which of the following is NOT true of security attacks?A:Employees will keep up with security polices and awareness if they are highly-trained.B:The rate of security attacks appears faster than the growth of the Internet.C:One's computer system will never be secure.D:Vulnerabilities can go through phones,wireless devices,and network appliances.
IPsec, also known as the internet Protocol ( ) , defines the architecture for security services for IP network traffic IPsec describes the framework for providing security a the IP layer, as well as the suite of protocols designed to provide that security: through_ ( )_ and encryption of IP network packets. IPec can be used 10 protect network data, for example, by setting up circuits using IPsec ( ), in which all data being sent between two endpoints is encrypted, as with a Virtual (请作答此空) Network connection ;for encrypting application layer data ;and for providing security for routers sending routing data across the public internet. Internet traffic can also be secured from host to host without the use of IPsec, for example by encryption at the ( ) layer with HTTP Secure (TTPS)or an the transport layer wit the Transport Layer Security (TLS)protocol.A.pubic]B.private]C.personalD.proper
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.repeatersB.relaysC.connectorsD.modems
Cisco Clean Access ensures that computers connecting to your network have which of the following？（）A、 No vulnerable applications or operating systemsB、 No viruses or wormsC、 Appropriate security applications and patch levelsD、 Current IPS signaturesE、 Cisco Security Agent
How does the Cisco Security Agent proactively stop both known and unknown attacks？（）A、 It reverse engineers and documents the attackB、 It looks subjectively at network traffic for abnormal flows of behaviorC、 It creates a signature and updates the network security policiesD、 It actively monitors all vulnerable areas of the network
Which two statements best describe the Cisco Unified Wireless Network？（）A、 The Cisco Unified Wireless Network provides the framework to segregate wired and wirelessnetworks to deliver the best security for companies that are deploying WLANs.B、 The Cisco Unified wireless Network provides the framework to integrate and extend wired andwireless networks to deliver the lowest-possible total cost or ownership for companies that aredeploying WLANsC、 The Cisco Unified Wireless Network extends "wireless awareness" into important elements ofthe network infrastructure， providing the same level of security for WLANs that organizations havecome to expect from their VPNs.D、 The Cisco unified Wireless Network extends "wireless awareness" into important elements ofthe network infrastructure， providing the same level of security scalability， reliability ease ofdeployment and management for WLANs that organizations have come to expect from their wiredLANs.
Which two statement best describes the Cisco Unified Wireless Network？ （）A、 The Cisco Unified Wireless Network provides the framework to segregate wired and wireless networks to deliver the best security for companies that are deploying WLANsB、 The Cisco Unified Wireless Network provides the framework to integrate and extend wired and wireless networks to deliver the lowest-possible total cost of ownership for companies that are deploying WLANsC、 The Cisco Unified Wireless Network extends wireless awareness into important elements of the network infrastructure， providing the same level of security for WLANs that organizations have come to expect from their VPNsD、 The Cisco Unified Wireless Network extends wireless awareness into important elements of the network infrastructure， providing the same level of security， sociability， reliability， ease of deployment， and management for WLANs that organizations have come to expect from their wired LANs
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
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.
Which of the following devices can be installed on individual computers throughout the network?（）A、NIPSB、Network-based firewallC、VPN concentratorD、Host-based firewall
A technician installed a new wireless access point on an existing small office home office (SOHO) network with a selective security option enabled. All wireless computers connect to the new network except one computer that cannot connect to the wireless network. Which of the following is the cause?（）A、The network uses MAC filteringB、The network uses WEPC、The network uses SSID broadcastD、The network uses WPA
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.
单选题A technician installed a new wireless access point on an existing small office home office (SOHO) network with a selective security option enabled. All wireless computers connect to the new network except one computer that cannot connect to the wireless network. Which of the following is the cause?（）AThe network uses MAC filteringBThe network uses WEPCThe network uses SSID broadcastDThe network uses WPA
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
多选题How could a large corporation with many specialized divisions benefit from using VLANs on their networks?（）AVLANs allow access to network services based on department, not physical location.BVLANs utilize packet filtering to enhance network security.CVLANs provide a low-latency, high bandwidth internetworking alternative.DVLANs provide a method of communication between IP addresses in large networks.EVLANs establish segmented broadcast domains in switched networks.FVLANs can greatly simplify adding, moving, or changing hosts on the network.
单选题Cisco Clean Access ensures that computers connecting to your network have which of the following？（）A No vulnerable applications or operating systemsB No viruses or wormsC Appropriate security applications and patch levelsD Current IPS signaturesE Cisco Security Agent
多选题Which two statements best describe the Cisco Unified Wireless Network？（）AThe Cisco Unified Wireless Network provides the framework to segregate wired and wirelessnetworks to deliver the best security for companies that are deploying WLANs.BThe Cisco Unified wireless Network provides the framework to integrate and extend wired andwireless networks to deliver the lowest-possible total cost or ownership for companies that aredeploying WLANsCThe Cisco Unified Wireless Network extends wireless awareness into important elements ofthe network infrastructure， providing the same level of security for WLANs that organizations havecome to expect from their VPNs.DThe Cisco unified Wireless Network extends wireless awareness into important elements ofthe network infrastructure， providing the same level of security scalability， reliability ease ofdeployment and management for WLANs that organizations have come to expect from their wiredLANs.
单选题How does the Cisco Security Agent proactively stop both known and unknown attacks？（）A It reverse engineers and documents the attackB It looks subjectively at network traffic for abnormal flows of behaviorC It creates a signature and updates the network security policiesD It actively monitors all vulnerable areas of the network
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