【单选题】
外电源系统中（）检测电源质量处于良好状态后，系统发出信号去：___
A. GPCU；燃亮驾驶舱头顶板外电源面板“EXTPWR”电门上“AVAIL”标示及外电源插座托架“EXTPWR/AVAIL”琥珀色灯
B. GCU1；燃亮驾驶舱头顶板外电源面板“EXTPWR”电门上“AVAIL”标示及外电源插座托架“EXTPWR/AVAIL”琥珀色
C. GPCU；燃亮驾驶舱头顶板外电源面板“EXTPWR”电门上“AVAIL”标示及外电源插座托架“EXT/PWRNOTINUSE”白色灯
D. GCU1；燃亮驾驶舱头顶板外电源面板“EXTPWR”电门上“AVAIL”标示及外电源插座托架“EXTPWR/AVAIL”琥珀色
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相关试题
【单选题】
当工作人员在进行维护作业的过程中，断开驾驶舱后跳开关面板上的某个跳开关，稍后在ECAM显示器上出现相关跳开关的信息，这说明该跳开关：___
A. 被脱开跳开关所对应的系统探测到跳开关被断开，并通过相关系统在ECAM上显示
B. 系统维护作业程序中正常出现的现象，属于正常信息
C. 被脱开的电路跳开关包含有连接到SDAC的辅助线路
D. 被脱开的电路跳开关包含有连接到CFDS的辅助线路
【单选题】
在正常情况下ACBUS1向ACESSBUS及ACSHEDESSBUS提供电源。当飞机在失去ACBUS1和ACBUS2电源的紧急情况下，（）将继续向ACESSBUS和ACSHEDESSBUS供电。___
A. 静变流自动工作
B. TR（变压整流器）将自动工作
C. 不论RAT状况如何，CSM/G（应急马达发电机）将自动工作
D. 当RAT提供的液压动力可用的情况下，CSM/G（应急马达发电机）将自动工作
【单选题】
0在地面维护过程中，工作人员发现主发电机按钮电门上的“FAULT”灯会燃亮，这说明：1）相应发电机按钮电门被松开；2）电路中的GLC（发电机电路接触器）受到GCU控制而脱开IDG与电网的连接；3）系统探测到故障的发生，GCU控制GLC脱开IDG与电网的连接___
A. 1）、2）
B. 1）、3）
C. 2）、3）
D. 1）、2）、3）
【单选题】
当IDG1故障后，交流主汇流条无电，如何进行操作使其能正常供电（）___
A. 将1号发电机控制电门放断开位置
B. 将汇流条连接电门放断开位置
C. 按入交流主转换控制电门
D. 无法进行操作
【单选题】
“发电机控制电门”的功用是（）___
A. 控制发电机励磁
B. 控制发电机向电网供电和断电
C. 指示发电机故障或不工作
D. 以上均正确
【单选题】
“主交流供电（ACESSFEED）”按钮的功用是（）___
A. 人工转换交流主汇流条的电源
B. 指示交流主汇流条供电情况
C. 自动控制交流主汇流条供电顺序
D. A+B
【单选题】
“主交流供电（ACESSFEED）”按钮上的“FAULT”灯亮表示（）___
A. IDG1故障
B. 自动转换失效且交流主汇流条上失去电源
C. 应急发电机失效
D. 静变流机失效且交流主汇流条上有电
【单选题】
2号变压整流装置（TR2）的过小电流保护什么时候不起作用（）___
A. 在地面，飞机电网由APU发电机供电
B. 在地面，交流和直流地面飞行汇流条仅由外电源供电
C. 在地面，交流和直流地面飞行汇流条由外电源供电
D. 在空中，飞机电网由APU发电机供电
【单选题】
APU发电机的主要参数为（）___
A. 115V、400HZ、3φ、5KVA
B. 115V、400HZ、3φ、90KVA
C. 28V、400HZ、1φ、90KVA
D. 28V、直流
【单选题】
IDG内部分为哪两个部分（）___
A. 驱动部分和发电机部分
B. 控制valve和发电机部分
C. 永磁机和发电机部分
D. 励磁极和主发电机部分
【单选题】
IDG内的发电机是一个（）___
A. 两极无刷风冷感应式三相交流发电机
B. 两极无刷油冷感应式三相交流发电机
C. 三极无刷风冷感应式三相交流发电机
D. 三极无刷油冷感应式三相交流发电机
【单选题】
IDG内的恒速装置是一种（）___
A. 电子恒频装置
B. 液压机械恒速装置
C. 电子变速恒频装置
D. 电子恒速装置
【单选题】
变压整流装置（TR）可在什么地方进行复位（）___
A. 在ECAM控制面板上
B. 在电源控制面板上
C. 在电子舱内的一个复位按钮
D. 在应急电源控制面板上
【单选题】
变压整流装置（TR）内部主要包括有（）___
A. 变压、二极管整流、滤波及稳压电路
B. 变压、稳压电路
C. 二极管整流、滤波及稳压电路
D. 滤波及稳压电路
【单选题】
变压整流装置（TR）提供什么保护（）___
A. 过热和过小电流保护
B. 过热和过压保护
C. 过热和过流保护
D. 以上均正确
【单选题】
当APU发电机起动正常后，但不能供电给飞机电网，可能原因是（）___
A. 外电源正在向飞机电网供电
B. IDG正在向飞机电网供电
C. “汇流条连接”电门（BUSTIE）在断开位置
D. 以上均可能
【单选题】
当IDG与发动机附件齿轮箱脱开后，在SD上有什么指示（）___
A. 无指示
B. 在SD上无指示，但IDG脱开电门上的故障灯将亮
C. 将出现“DISC”指示
D. 将出现“GENOFF”指示
【单选题】
当发电机电压超过极限值后，将会自动进行保护，其结果是（）___
A. 使IDG与发动机脱开
B. 仅发电机接触器（GLC）断开
C. 断开GLC和发电机励磁
D. 仅断开发电机励磁
【单选题】
当发动机起动完毕后，其IDG不能发电，可能原因是（）___
A. 相应的GCU故障
B. IDG与发动机附件齿轮箱已脱开
C. 发电机控制电门在断开位置
D. 以上A+B+C
【单选题】
当外电源正在供电，APU起动好后，如何使APU发电机向电网供电（）___
A. 会自动供电，不用操作
B. 按压APU发电机控制电门
C. 断开外电源供电
D. 以上均正确
【单选题】
地面使用外电源启动好两台发动机后（）___
A. 外电源控制电门上的“ON”灯仍然亮
B. 外电源控制面板（108VU）上的“未使用”和“可用”灯熄灭
C. IDG向各自的汇流条供电
D. IDG供电灯亮
【单选题】
电瓶安装在（）___
A. 右前电子舱
B. 左电子舱
C. 驾驶舱
D. 机鼻舱
【单选题】
电瓶的主要参数为（）___
A. 额定电压28V、容量23AH
B. 额定电压24V、容量23AH
C. 额定电压24V、容量40AH
D. 额定电压28V、容量40AH
【单选题】
电瓶和直流电源与显示系统的接口装置是（）___
A. GPCU
B. GCU1
C. GCU2
D. BCL
【单选题】
电瓶控制按钮的“FAULT”灯亮是因为（）___
A. 电瓶电压过高
B. 电瓶过热
C. 电瓶内部短路
D. 以上B、C正确
【单选题】
电瓶正常充放电由什么控制？（）___
A. 电瓶按钮
B. 电瓶充电限制器（BCL）
C. 电瓶接触器
D. 电瓶汇流条
【单选题】
电源控制面板位于（）___
A. 驾驶舱102VU
B. 驾驶舱中央操纵台
C. 右侧操纵台
D. 驾驶舱前顶板
【单选题】
电源系统与飞机其他系统的接口装置是（）___
A. GCU1、GCU2、APUGCU、EGIU
B. GPCU、APUGCU、BCL1、BCL2
C. EGIU1、EGIU2、GPCU、BCL1、BCL2
D. TR1、TR2、ESSTR、GPCU、GCU1、GCU2
【单选题】
电源系统中的主电源是（）___
A. 28伏直流电
B. 三相交流电
C. 三相交流电和直流电
D. 单相交流电
【单选题】
电源系统中交流电的主要参数为（）___
A. 115V、400HZ、3φ
B. 115V、400HZ、单相
C. 220V、50HZ、3φ
D. 220V、50HZ、单相
【单选题】
电源系统中交流发电的基本组成是（）___
A. IDG1、IDG2、APU发电机、外电源插座、静变流机及接触器
B. IDG1、IDG2、APU发电机、外电源插座、GCU1、GCU2、APUGCU、GPCU、EGIU1、EGIU2、接触器、互感器及控制指示面板
C. IDG1、IDG2、APU发电机、TR1、TR2、ESSTR、GCU1、GCU2、GCU3
D. 以上BC正确
【单选题】
电源系统中直流供电的组成有（）___
A. TR1、TR2、ESSTR、1号、2号电瓶、接触器、BCL1、BCL2及各直流汇流条
B. TR1、TR2、ESSTR、1号、2号电瓶、CSM/G、BCL1、BCL2、接触器
C. IDG1、IDG2、静变流机、1号、2号电瓶及CSM/G
D. 以上均是
【单选题】
发电机控制装置（GCU）安装在（）___
A. 驾驶舱
B. 右前电子舱
C. 左电子舱
D. 机鼻舱
【单选题】
发电机控制装置（GCU）的主要功用是（）___
A. 电压调节、控制和保护
B. 提供各种指示和警告
C. 系统监控和测试
D. 以上均正确
【单选题】
飞行中两个主发电机均失效，在应急发电机工作之前，直流主汇流条（DCESSBUS）和交流主汇流条（ACESSBUS）由什么供电？（）___
A. 静变流机
B. 主变压整流装置（ESSTR）
C. 1号和2号电瓶
D. 1号电瓶
【单选题】
飞机在地面，只有电瓶供电的情况下，按压冲压涡轮和应急发电机人工按钮（RAT&EMERGENMANON）时：（）___
A. 冲压涡轮会放出，但应急发电机不工作；
B. 什么都不会发生
C. 冲压涡轮只能在空中放出，不会在地面放出，但应急发电机工作；
D. 冲压涡轮放出且应急发电机工作。
【单选题】
关于普通型和增强型电源系统说法正确的是（）___
A. 普通型中的GCU1与GCU2可与增强型中的GCU1与GCU2互换
B. 增强型中的GCU1，GCU2可换普通型中的GCU1、GCU2
C. 普通型中的GCU1、GCU2可换增强型中的GCU1、GCU2
D. 它们不可互换
【单选题】
关于前乘务员跳开关面板（2000VU）上的“MAINT”电门（维护用电门）说法正确的是（）___
A. 在地面，电门置于“ON”位就可以断开主电网供电
B. 仅用于外电源接入飞机交流直流地面飞行汇流条
C. 必须人工关断才可以将勤务汇流条断电即使外电源已撤去
D. 可用于断开外电源向飞机电网供电
【单选题】
关于应急发电机测试说法正确的是（）___
A. 必须放出RAT才能接通液压油路
B. 测试静变流机时无法从ECAM上看到参数
C. 测试静变流机时模拟一个50海里以上信号,以使交流主汇流条供电.
D. 只有在空中才能测试
【单选题】
航线测试静变流机的方法是（）___
A. 在MCDU上进行
B. 在电源控制面板上进行
C. 用应急发电机测试电门进行
D. 无法进行
推荐试题
【单选题】
How does the 802. 1x supplicant communicate with the authentication server？___
A. The supplicant creates EAP packets and sends them to the authenticator, which encapsulates them into RADIUS and forwards them to the authentication server.
B. The supplicant creates RADIUS packets and sends them to the authe nticator, which encapsulates the m into EAP and forwards them to the a uthentication server.
C. The supplicant creates RADIUS packets and sends them to the authenticator, which translates them into eap and forwards them to the a ut hentication server
D. The supplicant creates
E. AP packets and sends them to the authe nticator, which translates them into radius and forwards them to the authentication server.
【单选题】
Which command do you enter to verify the phase I status of a VPN connection？___
A. sh crypto se ssion
B. debug crypto isakmp
C. sh crypto isakmp sa
D. sh crypto ipsec sa
【单选题】
Refer to the exhibit. what is the e ffect of the given configuration？___
A. It enables authentication，
B. It prevents keychain authentication.
C. The two routers receive normal updates from one another.
D. The two device s are able to pass the message digest to one another.
【单选题】
Which command can you enter to configure OSPF to use hashing to authenticate routing updates？___
A. ip ospf aut hentication message-digest
B. neighbor 192 168.0 112 cost md5
C. ip ospf priority 1
D. ip ospf aut hentication-key
【单选题】
Which command can you enter to verify the status of Cisco lOS Resilient Configuration on a Cisco router?___
A. show secure bootset
B. secure boot-image
C. show binary file
D. ure boot-config
【单选题】
A user on your network inadvertently activates a botnet program that was received as an emai attachment. Which type of mechanism does Cisco Firepower use to detect and block only the botnet attack？___
A. network-based access control rule
B. reputation-based
C. user-ba sed access control rule
D. botnet traffic filter
【单选题】
What does the policy map do in CoPP？___
A. defines service parameters
B. defines packet selection parameters
C. defines the packet filter
D. define s the action to be performed
【单选题】
How is management traffic isolated on a Cisco ASR 1002？___
A. Traffic isolation is done on the vlan level
B. There is no management traffic isolation on a Cisco ASR 1002
C. Traffic is isolated based upon how you configure routing on the device
D. The management interface is configured in a special vRF that provides traffic isolation from the default routing table
【单选题】
Which statement about NaT table evaluation in the asa is true？___
A. After-auto NAT polices are appl d first
B. Manual NAT policies are applied first
C. the asa uses the most specific match
D. Auto NAT policies are applied first
【单选题】
Which information can you display by executing the show crypto ipsec sa command？___
A. ISAKMP SAs that are established between two peers
B. recent changes to the IP address of a peer router
C. proxy infor mation for the connection between two peers
D. IPsec SAs established between two peers
【单选题】
How can you prevent NAT rules from sending traffic to incorrect interfaces？___
A. Assign the output interface in the NAT statement
B. Add the no-proxy-arp command to the nat line.
C. Configure twice NAT instead o bject NAT. 5
D. Use packet-tracer rules to reroute misrouted NAT entries.
【单选题】
What term can be defined as the securing， control， and identification of digital data？___
A. cryptography
B. crypto key
C. cryptoanalysis
D. cryptology
【单选题】
Which feature in the dNS security module provide on and off network DNS protection？___
A. Data Loss Prevention
B. Umbrella
C. Real-time sandboxing
D. Layer-4 monitoring
【单选题】
Which a dverse consequence can occur on a network without BPDu guard ?___
A. The olde st switch can be elected as the root bridge
B. Unauthorized switches that are connected to the network can cause spanning-tree loops
C.
D. ouble tagging can cause the switches to experience CAM table overload.
【单选题】
What configuration is required for multitenancy ?___
A. shared infrastructure
B. multiple carriers
C. co-located resources
D. multiple separate zones
【单选题】
Why does ISE require its own certificate issued by a trusted CA？___
A. ISEs certificate allows guest devices to validate it as a trusted network device
B. It generates certificates for guest devices ba sed on its own certificate
C. It requests certificates for guest devices from the Ca server based on its own certificate.
D. ISE's certificate allows it to join the network security framework
【单选题】
which attack involves large numbers of ICMP packets with a spoofed source IP address？___
A. smurf attack
B. Teardrop attack
C. Nuke attack
D. SYN Flood attack
【单选题】
Which statement about interface and global access rules is true？___
A. Interface access rules are processed before global access rules.
B. Global access rules apply only to outbound traffic， but interface access rules can be applied in either direction
C. The implicit allow is proce ssed after both the global and interface access rules
D. If an interface access rule is applied， the global access rule is ignored
【单选题】
Which type of malicious software can create a back-door into a device or network？___
A. bot
B. worm
C. virus
D. Trojan
【单选题】
Which security term refers to the like lihood that a weakness will be exploited to cause damage to an asset？___
A. threat
B. risk
C. countermeasure
D. vulnerability
【单选题】
Which IPS detection method examines network traffic for preconfigured patterns？___
A. signature-based detection
B. honey-pot detection
C. anomaly-based detection
D. policy-based detection
【单选题】
What is an advantage of split tunneling ？___
A. It allows users with a VpN connection to a corporate network to access the internet with sending traffic across the cor porate network.
B. It allows users with a vpn connection to a corporate network to access the internet by using the vPN for security.
C. It protects traffic on the private network from users on the public network
D. It enables the VPN server to filter traffic more efficiently
【单选题】
Which IDS/IPS state misidentifies acceptable behavior as an attack ？___
A. false negative
B. true positive NEKA G
C. true negative
D. false positive
【单选题】
What is the maximum num ber of methods that a single method list can contain？___
【单选题】
Which command enables authentication at the oSPFv2 routing process level？___
A. ip ospf authentication message-digest
B. area 0 authentication message-digest
C. ip ospf message-digest-key 1 mds Cisco
D. area 0 authentication ipsec spi 500 md5 1234567890ABCDEF1234567890ABCDEF
【单选题】
Which type of firewall monitors a nd protects a specific system？___
A. firewall
B. application firewall
C. stateless firewall wvp
D. personal firewall
【单选题】
On an ASA， which maps are used to identify traffic？___
A. Route maps
B. Policy maps
C. Class maps
D. Service maps
【单选题】
Which type of social engineering attack targets top executives？___
A. whaling
B. vishin
C. spear phishing ng
D. baiting
【单选题】
What is the minimum Cisco lOS version that supports zone-based firewalls？___
A. 12.1T
B. 15.1
C. 15.0
D. 124
【单选题】
In which type of attack does an attacker overwrite an entry in the CAM table to divert traffic destined to a legitimate host？___
A. DHCP spoofing
B. ARP spoofing
C. CAM table overflow
D. MAC spoofing
【多选题】
Which two attack types can be prevented with the impleme ntation of a Cisco IPS solution？___
A. DDos
B. man-in-the-middle
C. worms
D. ARP spoofing
E. VLAN hopping
【多选题】
choose four___
A. DHCP snooping ——————————blocks DHCP messages
B. Dynamic ARP inspection——————verifies IP-to-MAC traffic on untrusted ports
C. IP sources guard ——————————provides layer 2 interface security with ports ACLs
D. Port security————————————mitigates MAC-address spoofing at the access interface
【多选题】
choose four___
A. Step1————————run the system setup wizard
B. Step2————————add an authentication realm
C. Step3————————configure identity management
D. Step4————————configure directory group
【多选题】
What are two advanced features of the Cisco AMp solution for endpoints ___
A. contemplation
B. foresight
C. sandboxing
D. reputation
E. reflection
【多选题】
Which two characteristics of RADIUS are true？___
A. It encrypts only the password between user and server.
B. It uses TCP ports 1812/1813
C. It uses UDP ports 1812/1813.
D. It uses UDP port 49
E. It uses TCP port 49
【多选题】
What are two challenges of using a network-based IPS？ ___
A. It is unable to determine whether a detected attack was successful
B. It requires additional storage and proce ssor capacity on syslog servers
C. As the network expands， it requires you to add more sensors.
D. It is unable to detect attacks across the entire network
E. It must support multiple operating systems.
【多选题】
What are two default be haviors of the traffic on a zone-based firewall？___
A. Traffic within the self -zone uses an im plicit deny all.
B. All traffic between zones is implicitly blocked
C. Communication is allowed between interfadAss that are members of the same zone
D. Communication is blocked between interfaces that are members of the same zone
E. The CBAC rules that are configured on router interfaces apply to zone interfaces
【多选题】
Which two advantages does the on-premise model for MDM deployment have over the cloud-based model？___
A. The on-premise model is easier and faster to de ploy than the cloud-based model
B. The on-premise model is more scalable than the cloud-based model
C. The on-premise model is generally less expensive than the cloud-based model
D. The on-premise model generally has less latency than the cloud- based model.
E. The on-premise model provides more control of the MDM solution than the cloud
【多选题】
Which two actions can an end usts take to manage a lost or stolen device in Cisco ISE？ ___
A. Activate Cisco ISE End point Protection Services to quarantine the device.
B. Add the mac address of the device to a list of blacklisted devices
C. Force the device to be locked with a PIN
D. Request revocation of the digital certificate of the device.
E. Reinstate a device that the user previously marked as lost or stolen
【多选题】
Which two problems can arise when a proxy firewall serves as the gateway between networks？___
A. It can prevent content caching
B. It can limit application support
C. It is unable to prevent direct connections to other networks
D. It can cause reduced throughput.
E. It is unable to provide antivirus protection
