There are different ways to perform IP based DoS Attacks.The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment（71）（e.g.TCP SYN requests）to establish hanging connections with the controller or a DPS.Such a way,the attacker can consume the network resources which should be available for legitimate users.In other（72）,the attacker inserts a large amount of（73）packets to the data plane by spoofing all or part of the header fields with random values.These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources.In some cases,an（本题）who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources.Moreover,the lack of diversity among DPSs fuels fuels the fast propagation of such attacks.Legacy mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment.Moreover,legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller.These features minimize both the impact and propagation of DoS attacks.Moreover,the legacy backhaul devices are controlled as a joint effort of multiple network element.For instance,a single Long Term Evilution（LTE）eNodeB is connected up to 32 MMEs.Therefore,DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device（75）the network.A.orB.administratorC.editorD.attacker
There are different ways to perform IP based DoS Attacks.The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment（71）（e.g.TCP SYN requests）to establish hanging connections with the controller or a DPS.Such a way,the attacker can consume the network resources which should be available for legitimate users.In other（72）,the attacker inserts a large amount of（73）packets to the data plane by spoofing all or part of the header fields with random values.These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources.In some cases,an（本题）who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources.Moreover,the lack of diversity among DPSs fuels fuels the fast propagation of such attacks.Legacy mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment.Moreover,legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller.These features minimize both the impact and propagation of DoS attacks.Moreover,the legacy backhaul devices are controlled as a joint effort of multiple network element.For instance,a single Long Term Evilution（LTE）eNodeB is connected up to 32 MMEs.Therefore,DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device（75）the network.
A.or
B.administrator
C.editor
D.attacker
B.administrator
C.editor
D.attacker
参考解析
解析：
相关考题：
Most IP layer-based proxy mechanisms，such as network address translation (NAT)，only supportuni-directional proxy，from the internal network to external network(the Interned．The proxvestablishes the communication channel by (71) IP addresses．The IP addresses must be (72) ．These proxy mechanisms prevent applications that must establish return data channels from establishing their data channels，such as，multimedia applications．IP layer-based proxy mechanisms need additional software (73) for each application that uses (74) channels． SOCKS identifies communication targets through domain names，overcoming the restriction of Usina private IP addresses．SOCKS can use domain names to establish communication between separate LANs，with (75) IP addresses．(66)A．manufacturingB．manipulatingC．conductD．implement
Which JUNOS software feature allows a user to define specific next－hop values for IP packets based on the source IP address of that packet?() A. MPLSB. Load BalancingC. Class Based ForwardingD. Filter Based Forwarding
下列网络攻击行为中,属于DoS攻击的是__(42)__。A.特洛伊木马攻击B.SYN Flooding攻击S 下列网络攻击行为中，属于DoS攻击的是__（42）__。A.特洛伊木马攻击B.SYN Flooding攻击C.端口欺骗攻击D.IP欺骗攻击
There are different ways to perform. IP based DoS Attacks.The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment (1)(e.g.TCP SYN requests) to establish hanging connections with the controller or a DPS. Such a way, the attacker can consume the network resources which should be available for legitimate users. In other (2), the attacker inserts a large amount of (3)packets to the data plane by spoofing all or part of the header fields with random values. These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources. In some cases, an (4)who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources. Moreover, the lack of diversity among DPSs fuels fuels the fast propagation of such attacks.Legacy mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment. Moreover, legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller. These features minimize both the impact and propagation of DoS attacks. Moreover, the legacy backhaul devices are controlled as a joint effort of multiple network element. For instance, a single Long Term Evilution(LTE) eNodeB is connected up to 32 MMEs. Therefore, DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device(5)the net work.A.message B.information C.request D.dateA.methods B.cases C.hands D.sectionsA.bad B.cases C.fake D.newA.or B.administrator C.editor D.attackerA.or B.of C.in D.to
There are different ways to perform IP based DoS Attacks. The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment?（ ）(e.g. TCP SYN requests) to establish hanging connections with the controller or a DPS. Such a way, the attacker can consume the network resources which should be available for legitimate users. In other?（请作答此空）, the attacker inserts a large amount of?（ ）packets to the data plane by spoofing all or part of the header fields with random values. These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources. In some cases, an?（ ）who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources. Moreover, the lack of diversity among DPSs fuels fuels the fast propagation of such attacks.Legacy?mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment. Moreover, legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller. These features minimize both the impact and propagation of DoS attacks. Moreover, the legacy backhaul devices are controlled as a joint effort of multiple network element. For instance, a single Long Term Evilution（LTE）eNodeB ?is connected up to 32 MMEs. Therefore, DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device（ ）the network.A. methodsB. casesC. handsD. sections
There are different ways to perform IP based DoS Attacks. The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment（ ）(e.g. TCP SYN requests) to establish hanging connections with the controller or a DPS. Such a way, the attacker can consume the network resources which should be available for legitimate users. In other（ ）, the attacker inserts a large amount of（ ）packets to the data plane by spoofing all or part of the header fields with random values. These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources. In some cases, an（ ）who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources. Moreover, the lack of diversity among DPSs fuels fuels the fast propagation of such attacks.Legacy?mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment. Moreover, legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller. These features minimize both the impact and propagation of DoS attacks. Moreover, the legacy backhaul devices are controlled as a joint effort of multiple network element. For instance, a single Long Term Evilution（LTE）eNodeB ?is connected up to 32 MMEs. Therefore, DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device（请作答此空）the network.A. orB. ofC. in D .to
There are different ways to perform IP based DoS Attacks. The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment（ ）(e.g. TCP SYN requests) to establish hanging connections with the controller or a DPS. Such a way, the attacker can consume the network resources which should be available for legitimate users. In other（ ）, the attacker inserts a large amount of（ ）packets to the data plane by spoofing all or part of the header fields with random values. These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources. In some cases, an（请作答此空）who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources. Moreover, the lack of diversity among DPSs fuels fuels the fast propagation of such attacks.Legacy?mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment. Moreover, legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller. These features minimize both the impact and propagation of DoS attacks. Moreover, the legacy backhaul devices are controlled as a joint effort of multiple network element. For instance, a single Long Term Evilution（LTE）eNodeB ?is connected up to 32 MMEs. Therefore, DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device（）the network.A. orB. administratorC. editorD. attacker
There are different ways to perform IP based DoS Attacks.The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment（71）（e.g.TCP SYN requests）to establish hanging connections with the controller or a DPS.Such a way,the attacker can consume the network resources which should be available for legitimate users.In other（本题）,the attacker inserts a large amount of（73）packets to the data plane by spoofing all or part of the header fields with random values.These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources.In some cases,an（74）who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources.Moreover,the lack of diversity among DPSs fuels fuels the fast propagation of such attacks.Legacy mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment.Moreover,legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller.These features minimize both the impact and propagation of DoS attacks.Moreover,the legacy backhaul devices are controlled as a joint effort of multiple network element.For instance,a single Long Term Evilution（LTE）eNodeB is connected up to 32 MMEs.Therefore,DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device（75）the network.A.methodsB.casesC.handsD.sections
There are different ways to perform IP based DoS Attacks.The most common IP based DoS attack is that an attacker sends an extensive amount of connection establishment（本题）（e.g.TCP SYN requests）to establish hanging connections with the controller or a DPS.Such a way,the attacker can consume the network resources which should be available for legitimate users.In other（72）,the attacker inserts a large amount of（73）packets to the data plane by spoofing all or part of the header fields with random values.These incoming packets will trigger table-misses and send lots of packet-in flow request messages to the network controller to saturate the controller resources.In some cases,an（74）who gains access to DPS can artificially generate lots of random packet-in flow request messages to saturate the control channel and the controller resources.Moreover,the lack of diversity among DPSs fuels fuels the fast propagation of such attacks.Legacy mobile backhaul devices are inherently protected against the propagation of attacks due to complex and vendor specific equipment.Moreover,legacy backhaul devices do not require frequent communication with core control devices in a manner similar to DPSs communicating with the centralized controller.These features minimize both the impact and propagation of DoS attacks.Moreover,the legacy backhaul devices are controlled as a joint effort of multiple network element.For instance,a single Long Term Evilution（LTE）eNodeB is connected up to 32 MMEs.Therefore,DoS/DDoS attack on a single core element will not terminate the entire operation of a backhaul device（75）the network.A.messageB.informationC.requestsD.date
Which of the following types of attacks does DHCP snooping prevent？（Choose all that apply.）（）A、Attacker sends multiple DHCP requests flooding DHCP serverB、Attacker connects rogue server initiating DHCP requestsC、Attacker connects rogue server replying to DHCP requestsD、Attacker sends DHCP jam signal causing DHCP server to crashE、Attacker sends gratuitous ARP replies， thereby jamming the DHCP serverF、Attacker sends unsolicited DHCP replies， thereby jamming the DHCP server
What is the purpose of configuring router R1 with the "IP Helper address" command？（）A、IP Helper is used to direct BOOTP clients to a BOOTP serverB、IP Helper is used to prevent the router form forwarding IP broadcastsC、IP Helper is used to allow IPX clients to communicate with IP-based serversD、IP Helper is used to accommodate compatibility routers using different IP routing protocolsE、None of the other alternatives apply
Which two network attack statements are true？（）A、Access attacks can consist of password attacks，trust exploitation，port redirection，and man-in-the-middle attacks.B、Access attacks can consist of UDP and TCP SYN flooding，ICMP echo-request floods，and ICMP directed broadcasts.C、DoS attacks can be reduced through the use of access control configuration，encryption，and RFC 2827 filtering.D、DoS attacks can consist of IP spoofing and DDoS attacks.E、IP spoofing can be reduced through the use of policy-based routing.F、IP spoofing exploits known vulnerabilities in authentication services， FTP services，and web services to gain entry to web accounts，confidential databases，and other sensitive information.
Which command is used to enable EtherChannel hashing for Layer 3 IP and Layer 4 port-based CEF？（）A、mpls ip cefB、port-channel ip cefC、mpls ip port-channel cefD、port-channel load balanceE、mpls ip load-balanceF、ip cef EtherChannel channel-id XOR L4G、ip cef connection exchange
An attacker sends a low rate of TCP SYN segments to hosts， hoping that at least one port replies. Which type of an attack does this scenario describe？（）A、DoSB、SYN floodC、port scanningD、IP address sweep
You are the desktop administrator for ExamSheet. Your Windows 2000 Professional computer is configured to support two monitors. You install a DOS-based application on your computer. The application uses the Windows 2000 Professional default settings Autoexec.nt and Config.nt. Your primary video adapter is set to 24 bit color, 800 x 600 resolution, and default refresh rates. Your secondary video adapter is set to 32 bit color, 1024 x 768 resolution, and a refresh refresh of 72 hertz. You create a shortcut for the DOS-based application on the secondary monitor's desktop and use the default PIF settings. You attempt to run the DOS-based application on the secondary monitor. The application opens, but the display area is scrambled. You then attempt to run the DOS-based application on the primary monitor. The application does not open. Both monitors function correctly when you run Windows based applications. You want to be able to run the DOS-based application on either monitor. What should you do?（）A、Reconfigure the shortcut properties to run the DOS-based application in full screen mode.B、Reconfigure the PIF settings of the DOS-based application to start in a window.C、Change the drivers for both video adapters from WDM compliant drivers to DOS drivers.D、Change the refresh rate setting to 72 hertz for both video adapters.E、Change the color setting for both video adapters to 256 colors.
单选题An attacker sends a low rate of TCP SYN segments to hosts， hoping that at least one port replies. Which type of an attack does this scenario describe？（）ADoSBSYN floodCport scanningDIP address sweep
单选题Which command is used to enable EtherChannel hashing for Layer 3 IP and Layer 4 port-based CEF？（）Ampls ip cefBport-channel ip cefCmpls ip port-channel cefDport-channel load balanceEmpls ip load-balanceFip cef EtherChannel channel-id XOR L4Gip cef connection exchange
多选题You are the desktop administrator for ExamSheet. Your Windows 2000 Professional computer is configured to support two monitors. You install a DOS-based application on your computer. The application uses the Windows 2000 Professional default settings Autoexec.nt and Config.nt. Your primary and secondary video adapters are both set to 32 bit color, 800 x 600 resolution, and default refresh rates. You create a shortcut for the DOS-based application on the primary monitor's desktop and use the default PIF settings. You attempt to run the DOS-based application on the primary monitor. The application opens, but the display area is scrambled. You then attempt to run the DOS-based application on the secondary monitor. The application does not open. Both monitors function correctly when you run Windows based applications. You want to be able to run the DOS-based application on either monitor. What should you do?（）AReconfigure the PIF settings of the DOS-based application to start in a window.BReconfigure the shortcut properties to run the DOS-based application in full screen mode.CChange the drivers for both video adapters from WDM compliant drivers to DOS drivers.DChange the refresh rate setting to 72 hertz for both video adapters.EChange the color setting for both video adapters to 256 colors.
单选题Which JUNOS software feature allows a user to define specific next-hop values for IP packets based on the source IP address of that packet？（）AMPLSBLoad BalancingCClass Based ForwardingDFilter Based Forwarding
单选题Your Windows 2000 Professional computer is configured to support two monitors. You install a DOS-based application on your computer. The application uses the Windows 2000 Professional default settings Autoexec.nt and Config.nt. Your primary and secondary video adapter are both set to 16-bit color,1024x 768 resolution, and default refresh rates. You create a shortcut for the DOS-based application on the primary monitor’s desktop and use the default PIF settings. Your attempt to run the DOS-based application on the primary monitor. The application opens, but the display area is scrambled. You then attempt to run the DOS-based application on the secondary monitor. The application does not open. Both monitors function correctly when you run Windows-based applications. What should you do?（ ）AChange the color setting for both video adapters to 256 colors. Reconfigure the shortcut properties to run the DOS-based application in full-screen mode.BChange the refresh rate setting to optimal for both video adapter. Reconfigure the PIF settings of the DOS-based application to start in a window.CChange the drivers for the secondary video adapter from WDM-compliant drivers to DOS drivers. Reconfigure the PIF settings to run the DOS-based application in full-screen modeDUpdate the drivers for the primary video adapter. Change the secondary video adapter to use 640 x 480 resolution and 256 colors.