【单选题】
There are two versions of IKE:IKEv1 and IKEv2. Both IKEv1 and IKEv2 protocols operate in phases IKEv1 operates in two phases. IKEv2 operates in how many phases？___
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相关试题
【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
【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
【单选题】
1．三相刀开关的图形符号与交流接触器的主触点符号是___。
A. 一样的
B. 可以互换
C. 有区别的
D. 没有区别
【单选题】
5．熔断器的作用是___。
A. 短路保护
B. 过载保护
C. 失压保护
D. 零压保护
【单选题】
6．热继电器的作用是___。
A. 短路保护
B. 过载保护
C. 失压保护
D. 零压保护
【单选题】
7．交流接触器的作用是可以___接通和断开负载。
【单选题】
8．三相异步电动机的启停控制线路由电源开关、熔断器、___、热继电器、按钮等组成。
A. 时间继电器
B. 速度继电器
C. 交流接触器
D. 漏电保护器
【单选题】
9．三相异步电动机的启停控制线路中需要有___、过载保护和失压保护功能。
A. 短路保护
B. 超速保护
C. 失磁保护
D. 零速保护
【单选题】
10维修电工以___、安装接线图和平面布置图最为重要。
A. 电气原理图
B. 电气设备图
C. 电气安装图
D. 电气组装图
【单选题】
11．熔断器的额定电压应___线路的工作电压。
A. 远大于
B. 不等于
C. 小于等于
D. 大于等于
【单选题】
12．对于电阻性负载，熔断器熔体的额定电流___线路的工作电流。
A. 远大于
B. 不等于
C. 等于或略大于
D. 等于或略小于
推荐试题
【单选题】
机外氧气释放器指示黄色,则表明。___
A. 正常．
B. 氧气瓶压力过高．
C. 氧气瓶可能已经过压释放．
D. 以上说法皆不正确．
【单选题】
将氧气面罩选择器放在应急位使用时___
A. 按需向面罩提供稀释氧
B. 按需向面罩提供纯氧
C. C.连续向面罩提供纯氧
D. 连续向面罩提供稀释氧
【单选题】
氧气发生器，一经启动，可供氧：___
A. 5分钟，如果所有面罩都使用。
B. 30分钟，若只有一个面罩使用。
C. 15分钟，每个面罩都一样。
D. 直到气瓶中氧气消耗完
【单选题】
旅客氧气系统自动作动时延时继电器如何工作？___
A. 30秒后切断供电
B. 供电3秒
C. 30秒后供电
D. 3秒后供电
【单选题】
如果客舱高度高于14000英尺，氧气面罩如何掉出？___
A. 只能通过起动机长面板上的开关
B. 自动按客舱压力掉出及/或通过乘务员的动作
C. 自动按客舱压力掉出及/或通过机组的动作
D. 由旅客自行拉出
【单选题】
氧气选择开关在“TEST/RESET”（测试/复位）控制用于：___
A. A检查面罩供氧操作。
B. B阻止氧气进入面罩。
C. C控制氧气进入面罩的流量。
D. 控制氧气进入面罩的浓度
【单选题】
怎么知道化学氧气发生器已经使用过?___
A. 气压表压力低．
B. ECAM页面有指示
C. 旅客氧气面罩已打开
D. 使用指示带呈黑色．
【单选题】
以下关于ECAM页面氧气压力指示的叙述错误的有：___
A. 0至400psi指示为琥珀色
B. 400至1850psi为绿色
C. 低于1500psi时有琥珀色半边框
D. 大于2000psi时有闪烁指示
【单选题】
机外氧气释放指示片丢失的情况下：___
A. MEL不可以放行
B. MEL可以放行，但要机务检查氧气瓶压力
C. MEL可以放行，但要机组准备飞行时间隔15分钟检查ECAM页面氧气压力指示
D. MEL可以放行，但是只能保留一天。
【单选题】
APU供气时,交输valve选择器放在自动位,当右大翼气源管道发生渗漏,则以下那种说法不对？___
A. A.左发引气valve关闭
B. B.右发引气valve关闭
C. C.交输引气valve自动关闭
D. D.APU引气valve自动关闭
【单选题】
APU引气valve是怎么工作的?___
A. A.做为一个开/关valve
B. B.做为一个调节valve
C. C.A和B
D.
【单选题】
APU引气活气打开对发动机引气valve打开有优先权吗?___
【单选题】
TCT的功能是:___
A. A.发送气压信号去控制FAV
B. B.向OPV发送气压信号
C. C.向PRV发送气压信号
D.
【单选题】
TLT的功能是:___
A. A.在过压情况下向OPV发送气压信号
B. B.向PRV发送气压信号去调节或关闭PRV
C. C.发送气压信号去控制FAV
D.
【单选题】
交输引气valve打开在:___
A. A.APU引气valve打开时
B. B.左发引气valve打开时
C. C.右发引气valve打开时
D.
【单选题】
哪一项不是TLT(温度限制恒温器)的功能___
A. A.反流抑制
B. B.对发动机引气有温度限制功能
C. C.对发动机引气有电气关断功能
D. D.对HPV(高压valve)的控制关断
【单选题】
对大翼前缘,吊架,短舱进行环境保护（ENVIRONMENTPROTECTION）的目的是什么:___
A. A.冷却热的部件
B. B.防止过大压力
C. C.减小飞行阻力
D. D.加热冷的部件
【单选题】
什么时候出现客舱高度警告？___
A. A.客舱高度9550英尺
B. B.客舱高度11300英尺
C. C.飞机高度39000英尺
D. D.飞机高度15000英尺
【单选题】
下列哪个area不增压?___
A. A.电子舱
B. B.空调舱
C. C.后货舱
D. D.后客舱
【单选题】
下列说法正确的是：___
A. A.安全valve有两个，一个防止正压超压，另一个防止反压超压。
B. B.后货舱门打开时，加温系统照常工作。
C. C.客舱高度达到15000英尺时，外流valve完全关闭。
D. D.在地面，电子舱通风系统只能是开路构型。
【单选题】
以下关于HPV的说法错误的是:___
A. A.HPV(高压valve)关闭时,IPC(中压单向valve)打开
B. B.HPV(高压valve)打开时,IPC(中压单向valve)关闭
C. C.PRV(压力调节valve)关闭时,HPV(高压valve)关闭
D. D.PRV(压力调节valve)打开时,HPV(高压valve)打开
【单选题】
以下关于发动机引气说法不正确的是：___
A. A.FAV(风扇空气valve)在发动机停车时处于关闭位
B. B.OPV(超压valve)在发动机停车时处于打开位
C. C.BMC1(引气监控计算机1号)失效,BMC2能完全接替其所有工作
D. D.BMC1和BMC2可以互换
【单选题】
正常情况下,当APU引气valve打开,交输引气valve选择器在自动位,则___
A. A.左发引气valve关闭;交输引气valve关闭
B. B.左发引气valve打开;交输引气valve打开
C. C.右发引气valve关闭;交输引气valve打开
D. D.右发引气valve打开;交输引气valve关闭
【单选题】
当发动机和APU工作，且APU引气valve选择在ON位时，正确的陈述为：___
A. A发动机引气valve关，交输引气valve关，APU引气valve开
B. B发动机引气valve开，交输引气valve开，APU引气valve关
C. C发动机引气valve关，交输引气valve开，APU引气valve开
D. D发动机引气valve开，交输引气valve关，APU引气valve开
【单选题】
572.为了给发动机开车提供外部空气，需要下列开关：___
A. A气源交输引气自动
B. B气源交输引气开
C. C发动机引气开关关
D. DAPU引气开关关
【单选题】
高压空气由谁提供：___
A. A发动机1和/或发动机2引气系统，APU负载压气机，高压地面接头
B. B发动机1和/或发动机2引气系统
C. C发动机1和/或发动机2引气系统或APU负载压气机
D.
【单选题】
气源系统的工作由谁控制和监控：___
A. A一台BMC
B. B两台组件控制器
C. C两台BMC
D. D一台ECB
【单选题】
PRV是如何驱动的？___
A. A气源
B. B电动
C. C以上两者
D.
【单选题】
当压力和温度不足以供应对应的发动机引气valve时会出现什么情况___
A. A中压valve关
B. BHPV开，中压级关
C. CHPV开，中压级保持同样形态
D.
【单选题】
如果PRV关闭，HPV将：___
A. A自动打开
B. B自动关闭
C. C不受影响
D.
【单选题】
如果上游气压低，高压valve将：___
A. A与PRV位置一样
B. B打开
C. C完全关闭
D. D保持在原来位置
【单选题】
温度调节是通过预冷器实现的，它将热空气温度限制在：___
A. A150℃
B. B85℃
C. C200℃
D. D400℃
【单选题】
来自发动机的引气：___
A. A是利用来自发动机风扇的冷空气冷却的
B. B在被各系统使用前不被冷却
C. C仅用空调部分的空气冷却
D. D用环境空气冷却
【单选题】
引气交输valve是如何控制的？___
A. A气源
B. B电动
C. C液压
D. D电控气动
【单选题】
引气交输valve有两个马达：___
A. A一个用于自动方式，另一个用于人工方式
B. B两个用于自动方式
C. C两个用于人工方式
D.
【单选题】
WiththeXBLEEDselectoratAUTOandairsuppliedbyengine1ONLY,theXBLEEDvalve:___
A. A.Isautomaticallycontrolledtoopen
B. B.Doesnotreceiveanyorder
C. C.Iscontrolledtoclose
D.
【单选题】
HowdoestheAPUBleedvalveoperate?___
A. A.Hydraulicly
B. B.Fueloperated
C. C.Electrically
D. D.Pneumatically
【单选题】
WhatisthepurposeofengineIP/HPswitching?___
A. A.Toregulatetheoutputpressure,dependingonFAVposition
B. B.Tokeepairbleedatasufficientpressureatlowenginespeed
C. C.Toregulatetheoutputtemperature,dependingontheconfigurationofusers
D.
【单选题】
WhatisthepurposeoftheTemperatureControlThermostat?___
A. A.TosendapneumaticsignaltocontroltheFAV
B. B.TosendapneumaticsignaltotheOPVincaseofoverpressure
C. C.TosendapneumaticsignaltocontrolthePRV
D. D.TosendapneumaticsignaltocontroltheHPV
【单选题】
332.(A320)是什么装置保证吊架area压力能快速释放掉？___
A. A.是吊架接近面板上的通气口
B. B.是吊架的压力释放接近门
C. C.是吊架接近面板的安装接缝
D. D.是安装在吊架接近门上的通气valve
