【单选题】
当维护回流条开关接通后，若TR2失效后，下列说法正确的是：___
A. 交直流的GROUND/FLIGHT(GND/FLT)汇流条均没有电
B. 只有直流的GROUND/FLIGHT(GND/FLT)汇流条有电
C. 交直流的GROUND/FLIGHT(GND/FLT)汇流条依然有电
D.
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相关试题
【单选题】
外部直流电源接入飞机电网是受什么部件控制？___
A. GPCU
B. GCU
C. GAPCU
D.
【单选题】
当TR1失效后，DCESSBUS可从什么地方得到电源？___
A. ACESSBUS
B. DCBATBUS
C. CSM/G
D.
【单选题】
当TR2失效后，DCESSBUS由什么部件提供电源？___
A. TR1
B. ESSTR
C. BAT2
D.
【单选题】
当飞机未通电（交/直流均无）时，在什么地方可检查电瓶电压？___
A. 无指示
B. 在电瓶舱内的电压表
C. 可直接在电源面板上的指示窗查看
D.
【单选题】
电瓶接触器受什么部件控制？___
A. 发电机控制组件(GCU)
B. 电瓶充电限制器(BCL)
C. 静变流机
D.
【单选题】
在正常供电构型下，DCESSBUS如何得到电源？___
A. 来自TR1(DCBUS1）
B. 来自ESSTR
C. 来自TR2(DCBUS2）
D. 来自电瓶2
【单选题】
GALLEYFAULT灯亮的含义是___
A. 后厨房设备被卸载
B. 所有厨房设备被卸载
C. 当任一发电机（IDG或APU)过载
D.
【单选题】
当APU发电机在地面发生过载故障后，下列说法正确的是（）___
A. 所有商用的子汇流条被卸载
B. 所有厨房的汇流条被卸载
C. 所有厨房设备依然有电
D.
【单选题】
增强型电源系统是如何同MCDU相连？___
A. 直接通过每一个GCU
B. 通过GAPCU和CFDIU
C. 通过CFDIU同EGIU(ELECTRICALGENERATIONINTERFACEUNIT)
D.
【单选题】
正常构形下，DCBUS1由谁供电？___
A. 来自变压整流器1
B. 来自主变压整流器
C. 来自变压整流器2
D. 来自电瓶2
【单选题】
ACESSBUS的正常电源来自：___
A. 交流汇流条1
B. 交流汇流条2
C. 应急发电机
D. 静变流机
【单选题】
直流电瓶汇流条如何供电：___
A. 直流汇流条1或电瓶
B. 直流汇流条1，直流汇流条2或电瓶
C. 直流汇流条2或电瓶
D. 不确定
【单选题】
当电源控制面板上GEN1按钮在关位时会出现什么情况？___
A. 1号和2号交流汇流条没有电并且应急发电机自动连接
B. 1号交流汇流条因1号发电机不起作用而由2号发电机供电
C. 1号交流汇流条因1号发电机网路继电器在断开位而由2号发电机供电
D. 1号交流汇流条没有电因为1号GEN1继电器在断开位并且转换接触器没有闭合
【单选题】
如果ACBUS1故障，ACESSBUS由谁供电：___
A. 应急发电机
B. 交流汇流条2
C. 静变流机
D. 不确定
【单选题】
哪一个电源向ESSTR供电?___
A. ACBUS1或ACBUS2
B. ACBUS1和ACBUS2
C. ACESSBUS或应急发电机
D. 不确定
【单选题】
当电源控制面板上GEN1和GEN2开关在“关”(OFF)位时：___
A. 发电机中断供电且GLC开路
B. 发电机继续供电且GLC开路
C. 发电机不发电且GLC开路
D. 不确定
【单选题】
交流电转换使交流汇流条：___
A. 并联供电
B. 由任一发电机或外部电源供电
C. 只由APU发电机或外部电源供电
D. 不确定
【单选题】
哪一个组件控制电瓶接触器的通断?___
A. GCU
B. BCL
C. 静变流机
D. 电源面板上的BAT按钮
【单选题】
当TR2失效时,可否通过客舱顶板上的MAINTBUS开关直接给勤务汇流条供电?___
【单选题】
如何对变压整流器进行复位?___
A. 通过BCL或在电子舱内的一个按钮
B. 通过在电子舱内的一个按钮或电源接通时自动复位
C. 通过CFDS或在电子舱内的一个按钮
D. 不确定
【单选题】
何时过度放电保护功能断开电瓶接触器?___
A. 在空中当电瓶电压低于23V持续15秒
B. 在地面当电瓶电压低于23V持续15秒
C. 任何时候当电瓶电压低于23V持续15秒
D. 不确定
【单选题】
在空中应急电源构型下,APU启动程序何时被禁止?___
A. 在刚进入构型的45秒期间或到应急发电机供电时
B. 当应急发电机供电时
C. 应急发电机刚开始供电的45秒内
D. 不禁止
【单选题】
何时电源控制面板上的GALY&CAB按钮上的故障灯亮?___
A. 当厨房用电设备有故障时
B. 当客舱用电设备有故障时
C. 当1部IDG过载时
D. 当厨房用电设备负载过大而被卸载时
【单选题】
何时电源控制面板上的IDG按钮上的故障灯亮?___
A. 当滑油温度过高或滑油压力过低时
B. 当滑油温度过高且滑油压力过低时
C. 当CSD机构有故障时
D. 当CSD机构脱开后
【单选题】
何时TR2最小电流保护功能被禁止?___
A. 在地面飞机电网由APU发电机供电时
B. 在地面当外接电源只给勤务汇流条供电时
C. 在地面当外接电源给勤务汇流条供电时
D. 不确定
【单选题】
若IDG热熔断开,则___
A. IDG必须更换
B. IDG在地面进行复位后可继续工作
C. IDG在地面进行复位和按MM进行维护后可继续工作
D. 不确定
【单选题】
IDG上的冷却旁通valve何时打开?___
A. 在滑油温度低时
B. 在滑油温度高时
C. 在油滤堵塞时
D. 不确定
【单选题】
断开IDG，按钮应被按下：___
A. 不超过3秒
B. 不超过5秒
C. 超过3秒
D. 直至故障灯熄灭
【单选题】
在应急电源板上，如果在“RATANDEMERGEN”(冲压空气涡轮和应急发电机)标签下的故障灯亮：___
A. 冲压空气涡轮没有放出
B. 当ACBUS1和2无电(大于100KT)或DCBATBUS无电时，应急发电机不再供电
C. 应急发电机在供电，但交流主汇流条没有电
D. 当ACBUS1和2无电且空速大于100节时，应急发电机未供电
【单选题】
在应急电源构形下，ACESSBUS：___
A. 在空速大于100节时自动卸载
B. 在空速小于100节时自动卸载
C. 在空速小于50节时自动卸载
D. 在空速大于50节时自动卸载
【单选题】
电瓶何时为DCBATBUS供电：___
A. APU开车时
B. ACBUS1无电时
C. ACBUS1和2无电时（小于100节）
D. A和C
【单选题】
当你想检查电瓶电压时，你必须将电瓶按钮设在：___
【单选题】
电源控制面板上电瓶按钮的故障灯何时燃亮：___
A. 电瓶电压小于25伏
B. 在空中，电瓶按钮设在关位
C. 充电电流以反常速率增加
D. 不确定
【单选题】
在某些情况下，静变流机可能由谁供电：___
A. 热汇流条1和热汇流条2
B. 热汇流条1
C. 直流电瓶汇流条
D. 不确定
【单选题】
RAT的释放是如何控制的?___
A. 两个电磁valve同时有电时放出
B. 两个电磁valve中的任何一个有电时放出
C. 只有一个电磁valve在控制
D. 不确定
【单选题】
RAT的电磁valve是如何供电的?___
A. 由电瓶或热电瓶汇流条供电
B. 由DCBATBUS供电
C. 由DCBUS1或2供电
D. 不确定
【单选题】
当应急发电机的GCU探测到一个内部故障时:___
A. 控制液压的电磁valve关断,GLC断开
B. 发电机低速运转,GLC断开
C. 控制液压的电磁valve关断,励磁场关断,GLC不断开
D. 不确定
【单选题】
静变流机故障信号送至哪部计算机?___
A. GAPCU
B. GCU
C. BCL
D. GPCU
【单选题】
飞机上电网工作正常,若在电源控制面板上将ACESSFEED按钮弹出放ALTN位,则:___
A. ACESSBUS由应急发电机供电
B. ACESSBUS由ACBUS1供电
C. ACESSBUS由ACBUS2供电
D. 不确定
推荐试题
【单选题】
Which type of attack can exploit design flaws in the implementation of an application without___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
How can you protect CDP from reconnaissance attacks？___
A. Enable dynamic ARP inspection on all untrusted ports.
B. Enable dot1x on all ports that are connected to other switches.
C.
D. isable CDP on ports connected to endpoints.
【单选题】
Which type of attack can exploit design flaws in the implementation of an application without ？___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
Which option is a key security compone nt of and MDM deployment ？___
A. using network-specific installer packages
B. using an application tunnel by default
C. using self-signed certificates to validate the server
D. using MS-CHAPv2 as the primary
E. AP method
【单选题】
Which Firepower Management Center feature detects and block exploits and hack attempts？___
A. Content blocker
B. file control
C. intrusion prevention
D. advanced malware protection
【单选题】
hich description of the nonsecret numbers that are used to start a Diffie- Hellman exchange is ture？___
A. They are preconfigured prime integers.
B. They are large pseudorandom numbers.
C. They are very small numbers chosen from a table of known valuses
D. They are numeric values extracted from ha shed system hostnames
【多选题】
Which two characteristics of an application layer firewall are true？___
A. provides stateful firewal functionality
B. has low processor usage
C. provides protection for multiple applications
D. provides rever se proxy services
E. is immune to URL manipulation
【多选题】
Which two devices are components of the BYOD architectural framework？___
A. Nexus 7010 switch
B. Cisco 3945 Router
C. Identify Services Engine
D. Wireless Access oints
E. Prime Infrastructure
【多选题】
Which two actions can a zone based firewall take when looking at traffic？ ___
A. forward
B. inspect
C. drop
D. broadcast
E. filter
【多选题】
n which two situations should you use in-band management？___
A. when management applications need concurrent access to the device
B. when you require administrator access from multiple locations
C. when a network device fails to forward packets
D. when you require ROMMON access
E. when the control plane fails to respond
【多选题】
What are two ways to prevent eavesdropping when you perform device management tasks？___
A. Use an SSH connection.
B. Use SNMPv3
C. Use out-of-band management
D. Use SNMP
E. Use in-band management
【多选题】
Which two features are commonly used CoPP and CPPr to protect the control plane？ ___
A. QoS
B. traffic classification
C. access lists
D. policy maps
E. class maps
F. Cisco Express Forwarding
【多选题】
Which four tunne ling prot ocols are enabled in the Dfit GrpPolicy group policy ？___
A. Clientless SSL VPN
B. SSL VPN Client
C. PPTP
D. L2TP/IPsec
E. IPsec IKEv1
F. IPsec IKEv2
【多选题】
Which two statements regarding the aSA VPN configurations are correct？___
A. The asa has a certificate issued by an external certificate authority associated to the ASDM TrustPoint1
B. The Default WEBVPNGroup Connection Profile is using the aaa with RADIUS server method
C. The Inside-srvbook mark references the https://192.168.1.2url
D. Only Clientless SSL VPN access is allowed with the Sales group policy
E. Any Connect， IPSec IKEv1， and IPSec IKEv2 VPN access is enabled on the outside interface
F. The Inside -SRV bookmark has not been applied to the Sales group policy
【多选题】
Which three ESP fields can be encrypted during transmission？___
A. Security Parameter Index
B. Sequence Number
C. MAC Address
D. Padding
E. Pad length
F. Next Header
【多选题】
.Which three statements de scribe DHCP spoofing attacks？___
A. They can modify traffic in transit.
B. They are used to perform man- in-the-middle attacks
C. They use ARP poisoning
D. They can access most network devices
E. They protect the ide ntity of the attacker by masking the DHCP address.
F. They are can physically modify the network gateway.
【多选题】
Which statement about the communication between interfaces on the same security level is true？___
A. Interfaces on the same security level require additional configuration to permit interinterface communication
B. Configuring interfaces on the same security level can cause asymmetric routing
C. All traffic is allowed by default between interfaces on the same security level
D. You can configure only one interface on a n individual security level
【多选题】
In which two situations should you use in band management？ ___
A. when the control plane fails to respond
B. when you require administrator access from multiple locations
C. when you require ROMMON access.
D. where a network device fails to forward packets
E. when multiple ma nagement applications need concument access to the device.
【多选题】
Which two features are supported in a VRF-aware softwar infrastructure before VRF-lite?___
A. multicast
B. fair queuing
C. WCCP
D.
E. IGRP
【多选题】
.Which loS command do you enter to test authentication again a AAA server？___
A. dialer aaa suffix <suffix> password <password>
B. ppp authentication chap pap test
C. test aaa-server authentication dialer group user name <user> password <password>
D. aaa authentication enable default test group tacases
【多选题】
Which two statements about the self zone on a cisco Xone based policy firewall are true？___
A. Multiple interfaces can be assigned to the self zone
B. it supports stateful inspections for multicast traffic
C. zone pairs that include the self zone apply to traffic transiting the device.
D. it can be either the source zone or the destination zone
E. traffic entering the self zone must match a rule
【多选题】
Which type of attack can exploit design flaws in the implementation of an application without ？___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
Which type of firewall can server as the interme diary between a client and a server ?___
A. Stateless firewall
B. application firewall
C. proxy firewall
D. personal firewall
【单选题】
What is the highest security level that can be configured for an interface on an ASA？___
【单选题】
Which term refers to the electromagnetic interference that can radiate from network cables？___
A. Gaussian distributions
B. Doppler waves
C. emanations
D. multimode distortion
【单选题】
How does a zone pair handle traffic if the policy de fination of the zone pair is missing?___
A. It inspects all traffic.
B. It drops all traffic.
C. It permits all traffic wihtout logging
D. It permits and logs all traffic
【单选题】
default how does a zone based firewall handle traffic to add from the self zone？___
A. It permits all traffic without inspection
B. It inspects all traffic to determine how it is handled
C. It permits all traffic after inspection
D. It frops all traffic
【单选题】
Which command should beused to ena ble AAA Authentication to determine if a user can access the privilege command level？___
A. aaa authentication enable local
B. aaa authentication enable level=
C. aaa authentication enable method de fault
D. aaa authentication enable defa ult local
【单选题】
On an ASA， the policy indicates that traffic should not be translated is often referred to as which of the following？___
A. NAT zero
B. NAT forward
C. NAT nul
D. NAT allow
【单选题】
Which protocol offers data Integrity encryption， authentication， and anti-replay functions for IPSec VPN？___
A. ESP protocol
B. IKEv3 Protocol
C. AH protoco
D. IKEv1 Protocol
【单选题】
Which component offers a variety of security Solution， including firwall， IF Antivirus and antiphishing features？___
A. Cisco loS router
B. Cisco ASA 5500 Ser ies security appliance
C. Cisco ASA 5500 X series Next Gen Security appliance
D. Cisco 4200 series IPS appliance
【单选题】
Refer to the exhibit， A Network Secur ity administrator check the ASa firewall NAT policy table rith show nat command， which statement is fails？___
A. There are only reverse translation matches for the REAL SERvER object
B. First policy in the Section 1 is a dynamic nat entry defined in the object configuration
C. NAT policy in section 2 is static entry de fined in the object configuration
D. Translation in Section 3 used when a connection does not matches any entries in first two sections
【单选题】
What is true of an aSa in transparent mode ?___
A. It supports OSPF
B. It requires an IP address for each interface
C. It requires a management IP address
D. It allows the use of dynamic NaT
【单选题】
What is the effect of the ip scp server enable command？___
A. It references an access list that allows specific SCP servers
B. It allows the router to initiate requests to an SCP server
C. It allows the router to become an SCP server
D. It adds SCP to the list of allowed copy functions
【单选题】
How can you mitigate attacks in which the attacker attaches more than one vLan tag to a packet？___
A. Assign an access VLAN to every active port on the switch
B. Disable Ether Channel on the switch
C. Explicitly identity each VLAN allowed across the trunk
D.
E. nable transparent VTP on the switch
【单选题】
Which technology can you implement to centrally mitigate potential threats when users on your network download files that might be malicious？___
A. Enable file-reputation services to inspect all files that traverse the company network and block files with low reputation scores
B. Verify that the compa ny IpS blocks all known malicious website
C. Verity that antivirus software is installed and up to date for all users on your network
D. Implement URL filtering on the perimeter firewall
【单选题】
What is the most common implementation of PaT in a standard networked environment？___
A. configuring multiple external hosts to join the self zo ne and to communicate with one another
B. configuring multiple internal hosts to communicate outside of the network using the outside interface IP address
C. configuring multiple internal hosts to communicate outside of the network by using the inside interface IP address
D. configuring an any any rule to enable external hosts to communicate inside the network
【单选题】
Which component of a bYod architecture provides aAa services for endpoint access ?___
A. Integrated Services Router
B. access point
C. ASA
D. Identity Services
E. ngine
【单选题】
You are configuring a NAT rule on a Cisco ASA ,Which description of a mapped interface is true?___
A. It is mandatory for all firewall modes
B. It is optional in routed mode
C. It is optional in transparent mode
D. It is mandatory for ide ntity NAT only
【单选题】
Which description of the use of a private key is true ？___
A. The sender signs a message using the receivers private key
B. The sender signs a message using their private key
C. The sender encrypts a message using the receivers private key
D. The receiver decrypts a n15ssage using the sender's private key
