【单选题】
在空中正常供电构型下,以下说法错误的是:___
A. A．ACESSBUS由ACBUS1供电
B. B．DCESSBUS由DCBATBUS供电
C. C．DCBATBUS由BAT1和BAT2供电
D. D．ACFLT/GND由ACBUS2供电
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答案
C
解析
暂无解析
相关试题
【单选题】
在正常供电构型下，如果GEN1#故障，则以下说法不正确的：___
A. A．两个BTC闭合
B. B．GLC1断开
C. C．左右燃油箱里内1号燃油泵失去供电
D. D．厨房电路自动部分卸载
【单选题】
在应急电源板上，如果“RATANDEMERGEN”(冲压空气涡轮和应急发电机)故障灯亮,说明：___
A. A冲压空气涡轮没有放出
B. B当1号和2号交流汇流条无电(大于100KT)或直流电瓶汇流条无电时，应急发电机不再供电
C. C应急发电机在供电，但交流重要汇流条没有电
D. D当1号和2号交流汇流条无电并且机轮收起时(前起落架在收上位)，应急发电机未供电
【单选题】
当1号发电机网路电门在关位时会出现什么情况？___
A. A1号和2号交流汇流条没有电并且应急发电机自动连接
B. B1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. C1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. D1号交流汇流条没有电因为1号发电机网路继电器在断开位并且转换接触器没有闭合
【单选题】
应急发电机测试期间会发生什么情况？___
A. A应急发电机联机，由热汇流条2供电，且绿液压系统被增压
B. B冲压空气涡轮放出
C. C由于蓝系统已被增压，应急发电机联机
D.
【单选题】
在地面，如果“RATANDEMERGENMANON”(冲压空气涡轮及应急发电机人工接通)按钮按下，会发生什么情况：___
A. A冲压空气涡轮放出
B. B应急发电机起动
C. C什么都不发生
D.
【单选题】
170.在应急电源面板上，如果在“RATANDEMERGEN”(冲压空气涡轮和应急发电机)标签下的故障灯亮，表示什么：___
A. A应急发电机供电，但交流重要汇流条没有电
B. B当1号和2号交流重要汇流条无电并且机轮收起时(前起落架在收上位)，应急发电机未供电
C. C冲压空气涡轮没有放出
D. D当1号和2号交流重要汇流条无电(大于100KT)或直流电瓶汇流条无电时，应急发电机不供电
【单选题】
静变流机将来自电瓶汇流条的直流电转换成：___
A. A单相115伏，400赫兹交流
B. B三相115/200伏，400赫兹交流
C. C单相200伏，400赫兹交流
D. D单相115伏，50赫兹交流
【单选题】
在空中，如果所有主发电机故障，应急发电机不工作，静变流机将供电给___
A. AAPU和发动机起动+重要交流汇流条
B. B发动机起动+重要交流汇流条+重要交流卸载汇流条
C. C发动机起动
D.
【单选题】
如果所有主发电机都故障会出现什么情况？___
A. A冲压空气涡轮自动放出并为黄液压系统供电，黄系统驱动应急发电机(假定前起落架未收起)
B. B冲压空气涡轮放出并与应急发电机机械连接
C. C冲压空气涡轮自动放出并为蓝液压系统供电，蓝系统驱动应急发电机(假定前起落架未收起)
D. D必须人工放出冲压空气涡轮
【单选题】
电瓶何时为直流电瓶汇流条(DCBATBUS)供电：___
A. AAPU起动时
B. B失去交流汇流条1时
C. C失去交流汇流条1和2(速度小于100KT)时
D. D以上A和C
【单选题】
在地面冷飞机形态下，按压RATMANON或EMERELECPWRMANON电门会导致：___
A. A冲压空气涡轮放出
B. B无任何情况发生
C. C应急发电机工作
D. D飞机通电
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【多选题】
Which two types of firewalls work at layer 4 and above ？___
A. Stateful inspection
B. Network Address Translation
C. Circuit-Level gateway
D. Static packet filter
E. Application Level firewall
【多选题】
Which two default settings for port security are true ？___
A. Violation is Protect
B. Violation is Restrict
C. Violation is Shutdown
D. Maximum number of MAC addresses is 2
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B. Uses TCP port 49
C. Uses UDP port 49
D.
E. ncrypts only the password between user and server
【多选题】
When setting up a site-to-site VPN with PSK authentication on a Cisco router， which two elements must be configured under crypto map？___
A. pfs
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D. peer
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【多选题】
When using the Adaptive Security Device Manager（ASDM), which two options are available to add a new root certificate？___
A. Install from SFTP server
B. Usehttps
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D. Use LDAP
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【多选题】
Which two SNMPv3 services support its capabilities as a secure networ k manage protocol？ ___
A. access control
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Which two statements about routed firewall mode are true ？___
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Which two statements describe DHCP spoofing attacks？___
A. They are used to perform man-in- the-middle attacks
B. They can access most network devices
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【多选题】
Which two types of VLANs using PVLANs are valid？___
A. isolated
B. promiscuous
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D. secondary
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【多选题】
What are two limitations of the self-zone policies on a zone-based firewall？___
A. They are unable to block Https traffic
B. They restrict SNMP traffic.
C. They are unable to support Https traffic
D. They are unable to implement application inspection
E. They are unable to perform rate limiting
【多选题】
Which two descriptions of TACACS+ are true？ ___
A. The TACACS+ header is unencrypted
B. It combines a uthentication and authorization
C. It uses TCP as its transport protocol
D. Only the password is encrypted.
E. It uses UDP as its transport protocol.
【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
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【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
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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
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A. accountability
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A. username Operator privilege 7 password cisco
B. username Operator privilege 1 password cisco
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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
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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
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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.
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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.
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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
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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
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What does the policy map do in CoPP？___
A. defines service parameters
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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
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D. The management interface is configured in a special vRF that provides traffic isolation from the default routing table
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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
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D. Auto NAT policies are applied first
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Which information can you display by executing the show crypto ipsec sa command？___
A. ISAKMP SAs that are established between two peers
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D. IPsec SAs established between two peers
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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.
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What term can be defined as the securing， control， and identification of digital data？___
A. cryptography
B. crypto key
C. cryptoanalysis
D. cryptology
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Which feature in the dNS security module provide on and off network DNS protection？___
A. Data Loss Prevention
B. Umbrella
C. Real-time sandboxing
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Which a dverse consequence can occur on a network without BPDu guard ?___
A. The olde st switch can be elected as the root bridge
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C.
D. ouble tagging can cause the switches to experience CAM table overload.
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D. ISE's certificate allows it to join the network security framework
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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
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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
