【单选题】
What does the dh group refer to？___
A. length of key for hashing C
B. length of key for encryption
C. tunnel lifetime key
D. length of key for key exchange
E. length of key for authentication
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答案
D
解析
暂无解析
相关试题
【单选题】
Which path do you follow to enable aaa through the SDM ？___
A. Configure Tasks > AAA
B. Configure > Addition Authentication > AAA
C. Configure > AAA
D. Configure > Additional Tasks > AAA
E. Configure Authentication > AAA
【单选题】
which technology cloud be used on top of an MPLS VPN to add confidentiality ？___
A. IPsec
B. 3DES
C. AES
D. SSL
【单选题】
Which term is most closely aligned with the basic purpose of a SIEM solution? ___
A. Non-Repudiation
B. Accountability
C. Causality
D. Repudiation
【单选题】
You have just deployed SNMPv3 in your environment， Your manager asks you to make sure that our SNMP agents can only talk to the SNMP Manager. What would you configure on your SNMI agents to satisfy this request？___
A. A SNMP View containing the SNMP managers
B. Routing Filter with the SNMP managers in it applied outbound
C. A standard ACL containing the SNMP managers applied to the SNMP configuration
D. A SNMP Group containing the SNMP managers
【单选题】
Which feature prevents loops by moving a nontrunking port into an errdisable state when a BPDU is received on that port？___
A. BPDU filte
B. DHCP snooping
C. BPDU guard
D. Port Fast
【单选题】
Which command enables port security to use sticky MAC addresses on a switch？___
A. switchport port-security violation restrict
B. switchport port-security mac-address sticky
C. switchport port-security violation protect
D. switchport port-security
【单选题】
When you edit an IPS subsignature， what is the effect on the parent signature and the family of subsignatures？___
A. The change applies to the parent signature and the entire family of subsignatures
B. The change applies to the parent signature and the subsignature that you edit
C. The change applies only to subsignatures that are numbered sequentially after the subsignature that you edit
D. Other signatures are unaffected， the change applies only to the subsignature that you dit
【单选题】
Which type of mechanism does Cisco FirePOWER de ploy to protect ag detected moving across other networks？___
A. antivirus scanning
B. policy-based
C. reputation-based
D. signature-based
【单选题】
What action must you take on the ise to blacklist a wired device？___
A. Locate the switch through which the device is connected and push an a cl restricting all access by the device
B. Issue a CoA request for the de vice's mac address to each access switch in the network
C. Revoke the device's certificate so it is unable to authenticate to the network
D. Add the device's MAc address to a list of black listed devices
【单选题】
Which type of firewall can perform deep packet inspection？___
A. packet-filtering firewall
B. stateless firewall
C. application firewall
D. personal firewall
【单选题】
What is the main purpose of Control Plane Policing？___
A. to prevent exhaustion of route-proce ssor resources
B. to organize the egress packet queues
C. to define traffic classes
D. to maintain the policy map
【单选题】
Which attack can be prevented by OSPF authentication？___
A. smurf attack
B. IP spoofing attack
C. denial of service attack
D. buffer overflow attack
【单选题】
What is the best definition of hairpinning？___
A. ingress traffic that traverses the outbound interface on a device
B. traffic that enters one interface on a device and that exits through another interface
C. traffic that enters and exits a device through the same interface
D. traffic that tunnels through a device interface
【单选题】
Which SNMPv3 security level provides authentication using HMAC with MD5， but does not use encryption？___
A. authPriv
B. authNo Priv
C. noAuthNoPriv
D. NoauthPriv
【单选题】
You have implemented a dynamic blacklist， using security intelligence to block illicit network activity. However， the blacklist contains several approved connections that users must access for usiness pur poses. Which action can you take to retain the blacklist while allowing users to access the approve d sites？___
A. Create a whitelist and manually add the approved addresses.
B. Disable the dynamic blacklist and deny the specif ic address on a whitelist while permitting the others
C. Edit the dynamic blacklist to remove the approved addresses
D. Disable the dynamic blacklist and create a static blacklist in its place
【单选题】
When connecting to an external resource,you must change a source IP address to use one IP address from a range of 207.165.201.1 to 207.165.1.30. Which option do you implement ?___
A. dynamic source NAT that uses an IP ad dress as a mapped source
B. static destination NAT that uses a subnet as a real de stination
C. dynamic source NAT that uses a range as a mapped source
D. static destination NAT that uses a subnet as a real source
【单选题】
Refer to the exhibit. 【nat（ins，any）dynamic interface】Which ty pe of NaT is configured on a Cisco ASA？___
A. dynamic NAT
B. source identity NAT
C. dynamic PAT
D. identity twice NAT
【单选题】
Which mitigation technology for web-based threats prevents the removal of confidential data from the network？___
A. CTA
B. DCA
C. AMP
D. DLP
【单选题】
Refer to the exhibit. What is the effect of the given configuration？___
A. It establishes the preshared key for the switch
B. It establishes the preshared key for the firewall.
C. It establishes the preshared key for the Cisco ISE appliance
D. It establishes the preshared key for the router.
【多选题】
What are two major considerations when choosing between a SPAN and a TAP when plementing IPS？___
A. the type of analysis the iS will perform
B. the amount of bandwidth available
C. whether RX and TX signals will use separate ports
D. the way in which media errors will be handled
E. the way in which dropped packets will be handled
【多选题】
What are two direct-to-tower methods for redirecting web traffic to Cisco Cloud Web Security？___
A. third-party proxies
B. Cisco Catalyst platforms
C. Cisco NAC Agent
D. hosted PAC files
E. CiSco ISE
【多选题】
Which three descriptions of RADIUS are true？ ___
A. It uses TCP as its transport protocol.
B. Only the password is encrypted
C. It supports multiple transport protocols
D. It uses UDP as its transport protocol
E. It combines authentication and authorization
F. It separates authentication，authorization，and accounting
【多选题】
Which two configurations can prevent VLAN hopping attack from attackers at VLAN 10？___
A. using switchport trunk native vlan 10 command on trunk ports
B. enabling BPDU guard on all access ports
C. creating VLAN 99 and using switchport trunk native vlan 99 command on trunk ports
D. applying ACl between VLAN
E. using switchport mode access command on all host ports
F. using switchport nonegotiate command on dynamic desirable ports
【多选题】
What are two features of transparent firewall mode ___
A. It conceals the presence of the firewall from attackers
B. It allows some traffic that is blocked in routed mode
C. It enables the aSA to perform as a router.
D. It acts as a routed hop in the network.
E. It is configured by default
【多选题】
Which two models of A sa tend to be used in a data center？___
A. 5555X
B. 5585X
C. ASA service module
D. 5512X
E. 5540
F. 5520
【多选题】
Which two statements about hardware-based encrption are true？___
A. It is widely accessible
B. It is potentially easier to compromise than software-based encryption. It requires minimal configuration
C. It requires minimal configuration
D. It can be implemented without impacting performance
E. It is highly cost-effective
【多选题】
In which two modes can the Cisco We b Security appliance be de ployed？___
A. as a transparent proxy using the Secure Sockets Layer protocol
B. as a transparent proxy using the Web Cache Communication Protocol
C. explicit proxy mode
D. as a transparent proxy using the Hyper Text Transfer Protocol
E. explicit active mode
推荐试题
【单选题】
普通型和增强型电源系统的主要设备差异是（）___
A. 增强型中无EGIU1，EGIU2，APUGCU和GPCU
B. 普通型中无GAPCU
C. 增强型中无GAPCU
D. 以上A+B
【单选题】
启动APU时（）___
A. 如果有外电源可以把电瓶电门断开后启动
B. 只有电瓶供电时电瓶电压应高于25V
C. 没有外电源时,电瓶不应完成APU火警测试
D. 只能用外电源起动APU
【单选题】
什么时候电瓶接触器会自动进行断开保护（）___
A. 在飞行中，电瓶电压低于23伏15秒后
B. 在地面，电瓶电压低于23伏15秒后
C. 无论何时，电瓶电压低于23伏15秒后
D. 在地面电瓶电压低于25伏15秒后
【单选题】
失去正常供电的紧急情况下，由什么提供电源（）___
A. 主变压整流装置（ESSTR）
B. 由蓝液压系统驱动的应急发电机（CSM/G）
C. 外部电源
D. 一台发动机驱动的发电机
【单选题】
失去正常供电的紧急情况下，由什么提供电源？（）___
A. 主变压整流装置（ESSTR）
B. 由兰液压系统驱动的应急发电机（CSM/G）
C. 外部电源
D. 一台发动机驱动的发电机
【单选题】
以下关于单独供电说法正确的是（）___
A. 在一个汇流条上，只能有一个电源供电
B. 在一个汇流条上，可由多个电源同时供电
C. 在一个汇流条上，同一时间，可由多个电源供电
D. 在一个汇流条上，同一时间，只能由一个电源供电
【单选题】
以下关于电瓶电门说法正确的是（）___
A. 用于控制电瓶的供电、充电及电压指示
B. 电瓶电门放“OFF”位，将使APU停车
C. 用于控制电瓶与直流电瓶汇流条的连接及指示电瓶故障
D. 用于控制IDG发电机控制和保护
【单选题】
以下关于电源接口组件（EGIU）说法正确的是（）___
A. 是专门为GCU和GPCU供电的装置
B. 两部EGIU可以互换
C. 是将GCU和GPCU的离散信号转换成数字信号的组件
D. 它也是与CFDS的接口组件
【单选题】
以下关于交流电源自动供电顺序说法正确的是（）___
A. 最后选择的电源为供电电源
B. IDG为首选供电电源
C. 只要应急发电机发电正常，主交流汇流条上就由它供电
D. 没有自动供电顺序，只能人工选择
【单选题】
应急发电机（CSM/G）的主要参数为（）___
A. 28V直流、5KVA
B. 115V、400HZ、3φ、90KVA
C. 115V、400HZ、单相、5KVA
D. 115V、400HZ、3φ、5KVA
【单选题】
应急发电系统主要组成是（）___
A. 应急发电机组件（CSM/G）、应急发电机控制组件、接触器、控制测试面板、自藕变压器
B. 应急发电机组件（CSM/G）、两个电瓶、接触器、应急发电机控制组件
C. 应急发电机组件（CSM/G）、静变流机、接触器、控制测试面板、自藕变压器
D. 应急发电机组件（CSM/G）、应急发电机控制组件、接触器、液压兰系统电动泵
【单选题】
有关发电机控制组件说法正确的是（）___
A. GCU1、GCU2、GCU3和GPCU，应急GCU是一样的可互换
B. 只有GCU1和GCU2是一样的，另外三个都有不同功能
C. 能通过程序销钉改变GCU1、2、3的功能，它们可互换
D. 它们都不能互换
【单选题】
在ECAM的电源系统页面上()___
A. 可以看到IDG的滑油入口温度和滑油压力数值
B. 可以看到闪烁的IDG滑油温度当其高于147OC时
C. 无法看到电瓶电流的方向
D. 无法看到IDG的脱开情况
【单选题】
在GCU内部的准备好电路的功用是（）___
A. 将发电机起动完毕
B. 将发电机电压调节在正常范围
C. 当发电机各种参数及电路正常后，为自动接通发电机输出做好准备
D. 以上A、B正确
【单选题】
在IDG与发动机附件齿轮箱脱开复位时，应注意的是（）___
A. 必须起动发动机才能复位
B. 必须是发动机转子在静止状态
C. 必须在飞机通电状态下
D. 必须更换IDG滑油后
【单选题】
在SD电源页面上，当IDG内的滑油温度大于147℃时，将会出现什么指示（）___
A. 温度指示将变为琥珀色
B. 指示值将闪烁但仍为绿色
C. 指示值变为琥珀色并闪烁
D. 无任何变化
【单选题】
在地面用APU起动好两台发动机后，按出电源控制面板上的汇流条连接（BUSTIE）按钮（）___
A. 对电网供电没有影响
B. 1号交流汇流条失去电源，1号直流汇流条和2号直流汇流条得到电源
C. 控制面板上的“主交流供电（ACESSFEED）”按钮FAULT灯亮，需人工按出
D. APU发电机将不发电
【单选题】
在电源控制面板上的“汇流条连接”电门（BUSTIE）放“OFF”位置，将使（）___
A. 断开交流自动转换功能
B. APU发电机不能向电网供电
C. 外电源不能向整个电网供电
D. 以上均正确
【单选题】
在电源控制面板上的外电源可用灯亮后，但接不通外电源，可能原因是（）___
A. APU发电机正在向飞机电网供电
B. 发电机控制电门在断开位置
C. “汇流条连接”电门（BUSTIE）在断开位置
D. 以上A+B
【单选题】
在飞行中，以下说法正确的是（）___
A. 电瓶始终连在电瓶汇流条上
B. 电瓶充电限制器控制电瓶放电，并控制电瓶与电网接触器的通断
C. 充电电流小于4A时BCL立即断开接触器停止充电
D. 以上均正确
【单选题】
在更换整体驱动发电机（IDG）后：（）___
A. 加IDG滑油时必须接溢流管并检查油位；
B. 必须测试IDG的脱开和重新衔接功能；
C. 不需要试车。
D. 左右IDG油面不同
【单选题】
在紧急电源面板上，发生电子舱烟雾后按出1号发电机在线（GEN1LINE）按钮（）___
A. 1号发动机不再工作，GEN1按钮里的FAULT灯亮
B. 机翼油箱左1和右1泵仍由1号发动机供电
C. GCL1和GCR1仍然闭合
D. 整个电网将失去电源
【单选题】
在空中，电源控制面板上的厨房按钮上的“FAULT”灯亮是因为：（）___
A. 厨房设备有故障；
B. 机上用电超负荷且厨房供电被断开；
C. 一台发电机故障
D. 以上A、B正确
【单选题】
在什么情况下，冲压涡轮会自动放出：（）___
A. 当飞机在空中，1号和2号交流汇流条失去电源且空速大于100海里；
B. 当飞机在空中，且兰电动泵失效的情况下；
C. 当飞机在空中，电瓶可用且兰液压系统出现低压
D. 无论在空中还是地面，只要1号和2号交流汇流条失去电源
