刷题
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【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
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相关试题
【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:___
A. 自动位
B. OFF位
C.
D.
【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
【单选题】
在何种构型下加油电源10分钟后自动切断?___
A. 由勤务汇流条供电时
B. 由热汇流条供电时
C. 上述两项都对
D. 不确定
【单选题】
何时勤务汇流条有电?___
A. 当飞机电网全部接通时
B. 当客舱顶板MAINTBUS开关放ON位
C. 当加油盖板打开时
D. A和B对
【单选题】
何种构型下电瓶提供加油电源?___
A. 勤务汇流条有电
B. 勤务汇流条无电,加油盖板打开时,加油开关放正常位
C. 勤务汇流条无电,加油盖板打开时,加油开关放ON位
D. 只要加油盖板打开时,加油开关放ON位
【单选题】
在冷飞机外形(无交流或直流供电),在哪儿可检查电瓶电压?___
A. 在ECAM电气页面
B. 在电源控制面板上
C. 无指示
D. 不确定
【单选题】
静变流机将来自电瓶汇流条的直流电压转换成:___
A. 单相115伏,400赫兹交流
B. 三相115/200伏,400赫兹交流
C.
D.
【单选题】
对于TR变压整流器,有哪些保护功能?___
A. 过热保护和最小电流保护
B. 过热保护和过压保护
C. 过热保护和过流保护
D. 不确定
【单选题】
在空中,如果所有发电机都故障,应急发电机不工作,DCESSBUS由谁供电:___
A. 电瓶热汇流条2
B. ESSTR
C. 以上都正确
D. 不确定
【单选题】
在空中,如果应急发电机工作,DCESSBUS由谁供电:___
A. 电瓶热汇流条2
B. ESSTR
C. 以上都正确
D. 不确定
【单选题】
DC电源系统中包括有(——)台主电瓶,安装在:___
A. 两台;飞机左侧电子舱内
B. 两台;飞机右侧电子舱内
C. 一台;飞机左侧电子舱内
D. 一台;飞机右侧电子舱内
【单选题】
安装在驾驶舱头顶板应急电源面板上的“EMERGENTEST”(应急发电机测试)电门,其功用是:___
A. 在任何情况下对应急马达发电机进行测试
B. 在空中状态下对应急马达发电机进行测试
C. 在地面任何状态下,对应急马达发电机进行测试
D. 在地面状态及蓝液压系统工作的情况下,对应急马达发电机进行测试
【单选题】
变压器整流器()的功用是:___
A. 将飞机115VAC电源转换成28VDC电源,提供给飞机直流汇流条
B. 将飞机115VAC电源转换成28VAC电源,提供给飞机交流汇流条
C. 将飞机28VDC电源转换成115VAC电源,提供给飞机交流汇流条
D. 将飞机28VAC电源转换成28VDC电源,提供给飞机直流汇流条
【单选题】
当GEN2(右发电机)不可用,飞机2号电网将可从哪些电源获得电能?___
A. GEN1(左发电机)、APU发电机、地面电源
B. GEN1(左发电机)、APU发电机
C. GEN1(左发电机)
D. 应急发电机
【单选题】
当发现跳开关面板上有跳开关被拔出或跳开的情况下,应当如何进行处理:___
A. 无须理会,直接执行手上的维护工作
B. 大致检查系统状况正常后即可闭合
C. 检查是否有合法的拔出标示牌;如果没有,必须先确认该跳开关是否与系统状况相符合或造成跳开关跳出的故障已经排除,确认后才能闭合
D. 检查是否有合法的拔出标示牌;如果没有,先闭合该跳开关并对系统进行测试,以确认系统是否存在故障
【单选题】
当工作人员看到驾驶舱头顶板35VU电源面板上“EXTPWR”按钮电门上的“AVAIL”标示燃亮,这表明:___
A. 地面电源已经连接到飞机电网
B. 地面电源已经连接好
C. 地面电源不可用
D. 地面电源已经连接到勤务汇流条
【单选题】
当工作人员连接地面电源电缆到外电源插座后,电源插座托架上琥珀色的“EXTPWR/AVAIL”灯及白色的“EXT/PWRNOTINUSE”灯燃亮,这表明:___
A. 外部电源质量良好,但电源并没有连接到飞机电网上
B. 外部电源质量有缺陷,但电源并没有连接到飞机电网上
C. 外部电源质量良好,但电源已经连接到飞机电网上
D. 外部电源电缆未正确连接到飞机外电源插座上
【单选题】
电源分配系统中,电路跳开关(断路器)端头的颜色分有几种,其区别是:___
A. 1种:黑色。没有不同点
B. 2种:黑色和绿色。黑色是正常构型,绿色包含有连接到SDAC的辅助线路
C. 3种:黑色、绿色、黄色。黑色是正常构型,绿色包含有连接到SDAC的辅助线路,黄色表示处于同一系统的电路上
D. 4种:黑色、绿色、黄色、红色。黑色是正常构型,绿色包含有连接到SDAC的辅助线路,黄色表示处于同一系统的电路上,红色表明为重要系统的电路跳开关
【单选题】
电源分配系统中,某些电路跳开关头部有明显的黄色标示圈,其功用是:___
A. 标识标志,表明这些跳开关与SDAC有直接的线路联系
B. 标识标志,表明这些跳开关属飞机重要的操作系统
C. 警告标志,说明这些跳开关不允许断开
D. 帮助工作人员在跳开关面板上更容易的发现这些跳开关
【单选题】
电源分配系统中,有些处于闭合状态下的电路跳开关(断路器)头部套有红色的衬套,其功用是:___
A. 相关电路条开关处于MEL放行的构型状态下
B. 避免这些电路跳开关在空中被机组复位,以确保飞行安全
C. 同一系统的电路跳开关标识,帮助辨认和查找
D. 重要系统的电路跳开关,在通电状态下禁止拔开
【单选题】
电源系统维护中,能否在地面状态下脱开发动机上的IDG(内部脱开与发动机附件齿轮箱的连接)?___
A. 可以在地面任何情况下通过按压相应IDG电门完成脱开工作
B. 在地面且发动机必须运转的情况下,可通过按压相应IDG电门来完成脱开工作
C. 必须将飞机模拟到控制状态后,通过按压相应的IDG电门完成脱开工作
D. 必须将飞机模拟到控制状态后且发动机运转的情况下,通过按压相应的IDG电门完成脱开工作
【单选题】
电源系统中,APU发电机的输出电源性能:___
A. 115V/200V、三相、400HZ
B. 220V/380V、三相、400HZ
C. 115V/200V、单相、400HZ
D. 115V/200V、三相、50HZ
【单选题】
电源系统中,IDG(整体驱动发电机)脱开电门安装在:___
A. 驾驶舱49VU(头顶跳开关面板)
B. 驾驶舱120VU(后跳开关面板)
C. 前登机门过道头顶2000VU(跳开关面板)
D. 驾驶舱20VU(头顶控制面板),并有红色保护盖保护
【单选题】
电源系统中,安装了(——)个电瓶。___
A. 1
B. 2
C. 3
D. 4
【单选题】
电源系统中,共有两台EGIU(ElectricalGenerationInterfaceUnit)它门被安装在:___
A. 驾驶舱120VU面板(后跳开关面板)
B. 电子设备舱90VU设备架上
C. 前登机过道顶部的2000VU面板上
D. 后登机过道顶部的2001VU面板上
【单选题】
电源系统中,静变流机的作用是:___
A. 将BAT1的直流电转换为115V、400HZ交流电
B. 将BAT1的直流电转换为220V、50HZ交流电
C. 将115V的交流电转换为28V直流电
D. 将220V的交流电转换为28V直流电
【单选题】
电源系统中,每台发动机均附带一台整体驱动发电机(IDG),IDG位于发动机的:___
A. 发动机左侧,风扇包皮内
B. 发动机右侧,风扇包皮内
C. 发动机左侧,核心机匣内
D. 发动机右侧,核心机匣内
【单选题】
电源系统中,外电源的接通是通过:___
A. 操作驾驶舱头顶ELEC面板上的“EXTPWR”电门,由GCU1控制接通外部电源
B. 操作驾驶舱头顶ELEC面板上的“EXTPWR”电门,由GCU2控制接通外部电源
C. 操作驾驶舱头顶ELEC面板上的“EXTPWR”电门,由GPCU控制接通外部电源
D. 操作前登机过道顶部的2000VU面板上的“MAINTBUS”电门,由GPCU控制接通外部电源
【单选题】
电源系统中,整体驱动发电机(IDG)安装在:___
A. 发动机附件齿轮箱上
B. 发动机燃油泵上
C. 发动机滑油泵上
D. 发动机液压泵上
【单选题】
电源系统中26V交流电源由()提供。___
A. 静变流机(STATINV)
B. 变压整流器(TR)
C. 3台115/26V变压器
D. 应急马达发电机(CSM/G)
推荐试题
【多选题】
Which two actions does an IPS perform? ___
A. it spans the traffic
B. it reflects the traffic back to the sender
C. it encrypts the traffic
D. it terminates the user session or connection of the attacker
E. it reconfigures a device to block the traffic
【多选题】
In which form of fraud does an attacker try to learn information such as login credenti account information by ma squerading as a reputable entity or person in email, IM or communication channels ?___
A. phishing
B. Smurfit
C. Hacking
D. Identity Spoofing
【多选题】
Which two ESA services are available for incoming and outgoing mails ?___
A. anti-DoS
B. reputation filter
C. antispam
D. content filter
E. DLP
【多选题】
What are two reasons to recommend SNMPv 3 over SNMPv2?___
A. SNMPv3 is secure because you can configure authe ntication and privacy
B. SNMPv3 is insecure because it send in formation in clear text
C. SNMPv2 is insecure because it send information in clear text
D. SNMPv3 is a Cisco proprietary protocol
E. SNMPv2 is secure because you can configure authentication and privacy
【多选题】
Which two actions can a zone- based firewall apply to a packet as it transits a zone pair?___
A. drop
B. inspect
C. queue
D. quarantine
【单选题】
Which security principle has been violated if data is altered in an unauthorized manner?___
A. accountability
B. confidentiality
C. availability
D. integrity
【单选题】
Which IKE Phase 1 parameter can you use to require the site-to-site VPN to use a pre-shared ?___
A. encryption
B. authentication
C. group
【单选题】
Which command successfully creates an administrative user with a password of "cisco"on a Cisco router?___
A. username Operator privilege 7 password cisco
B. username Operator privilege 1 password cisco
C. username Operator privilege 15 password cisco
D. username Operator password cisco privilege 15
【单选题】
Which EAP method authenticates a client against Active Directory without the use of client-side 802.1X certificates?___
A. EAP-TLS
B. EAP-MSCHAPv2
C. EAP-PEAP
D.
E. AP-GTC
【单选题】
What is a limitation of network-based IPS?___
A. It must be in dividually configured to support every operating system on the network.
B. It is most effective at the in dividual host level
C. It is unable to monitor attacks across the entire netw ork
D. Large installations require numerous sensors to fully protect the network
【单选题】
When would you configure the ip dhcp snooping trust command on a sw itch?___
A. when the switch is connected to a DHCP server
B. when the switch is working in an edge capacit
C. when the switch is connected to a client system
D. when the switch is serving as an aggregator
【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?___
A. 4
B. 3
C. 2
D. 5
【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
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