【填空题】
38.世界新军事变革不断深化，打赢 ___ 战争成为各国关注的焦点
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相关试题
【单选题】
What is an example of social engineering？___
A. gaining access to a computer by observing the user login credentials
B. gaining access to a build through an unguarded entrance
C. gaining access to a server by using a USB stick
D. gaining access to a server room by posing as local IT
【单选题】
Which type of Layer 2 attack enables the attacker to intercept traffic that is intended for one specific recipient？___
A. BPDU attack
B. DHCP starvation I LAB
C. MAC address spoofing
D. CAM table overflow
【单选题】
Which about nested policy maps in a zone-based firewall is true ?___
A. They are limited to two leve ls in a hierarchical policy
B. Parent policies are previously defined policies that are defined by using the service policy command
C. A child policy is a new policy that uses a pre-existing policy.
D. A child policy is a new that uses a pre-existing policy
【单选题】
In which configuration do you configure the ip ospf authentication key 1 command？___
A. routing process
B. interface
C. privileged
D. global
【单选题】
Which statement about command authorization and security contexts is true？___
A. If command authorization is configured， it must be enabled on all contexts.
B. The change to command invokes a new context session with the credentials of the currently
C. AAA settings are applied on a per-context basis
D. The enable. 15 user ang admins with chang to permission ha e dfferent command authorization levels pertontext
【单选题】
Which command do you enter to enable authentication for OSPF on an interface？___
A. router（config-if）#ip ospf message-digest-key 1 md5 CIS COPASS
B. router（config-if）#ip ospf authentication message-digest
C. router（config-if）#ip ospf authentication-key CISCOPASS
D. router（config-if）#area 0 authentication message-digest
【单选题】
What feature defines a campus area network？___
A. It has a single geographic location
B. It lacks external connectivity.
C. It has a limited number of segments.
D. It has limited or restricted Internet access
【单选题】
Which type of attack most commonly involves a direct attack on a network？___
A. :phishing
B. Trojan horse
C. denial of service
D. social engineering
【单选题】
What information does the key length provide in an encryption algorithm?___
A. the cipher block size
B. the hash bloc k size
C. the number of permutations
D. the packet size
【单选题】
How do you verify TaCACS+ connectivity to a device？___
A. You successfully log in to the device by using the local credentials
B. You connect via console port and receive the login prompt.
C. You connect to the device using SSH and receive the login prompt.
D. You successfully log in to the device by using ACS credentials
【单选题】
Which term best describes the concept of preventing the modification of data in transit and in storage？___
A. availability
B. confidentially
C. fidelity
D. integrity
【单选题】
Which loS command is used to define the authentication key for ntp？___
A. switch（config ）#ntp authentication-key 1 mds Clcs
B. switch（config ）#ntp authenticate
C. switch（config）#ntp trusted-key 1
D. switch（config）#ntp source 192.168.0.1
【单选题】
What is true about the cisco lOS Resilient Configuration feature ?___
A. The feature can be disabled through a remote session
B. There is additional space required to secure the primary cisco lOS image file.
C. The feature automatically detects image or configuration version mismatch.
D. Remote storage is used for securing files
【单选题】
When is the default deny all policy an exception in zone-based firewalls？___
A. when traffic terminates on the router via the self zone
B. when traffic traverses two interfaces in different zones
C. when traffic traverses two interfaces in the same zone
D. when traffic sources from the router via the self zone
【单选题】
.If an access port is assigned as an isolated port in a PVLAN， which network ports can it communicate with？___
A. promiscuous ports in the same PLVAN
B. isolated ports in the same PVLAN
C. all ports in the same PAVLAN at ILAR
D. all ports in the adjacent PVLAN
【单选题】
Which IPSEC mode is used to encypt traffic directly between a client and a server VPN endpoint？___
A. quick mode
B. transport mode
C. aggressive mode
D. tunnel mode
【单选题】
Which command do you enter to verify that a vpn connection is established between two endpoints and that the connection is passing traffic？ ___
A. Firewall#sh crypto session
B. Firewall#debug crypto isakmp
C. Firewall#tsh crypto ipsec sa
D. Firewall#sh crypto isakmp sa
【单选题】
which type of Pvlan port allows communication from all port types？___
A. isolated
B. in -line
C. community
D. promiscuous
【单选题】
Which command do you enter to configure your firewall to conceal internal addresses？___
A. no ip directed-broadcast
B. no ip logging facility
C. no proxy-arp
D. no ip inspect audit-trial
E. no ip inspect
F. route
【单选题】
Which feature defines a campus area network？ ___
A. It has a limited number of segments.
B. It has limited or restricted Internet access
C. It lacks ex1ternal connectivity.
D. It has a single geographic location
【单选题】
What technology can you use to provide data confidentiality data integrity and data origin authentication on your network？___
A. IPSec
B. Certificate Authority
C. IKE
D. Data
E. ncryption Standards
【单选题】
which standard is a hybrid protocol that uses oakley and skerne ke y exchanges is an ISAKMP framework？___
A. SHA
B. IPSec
C.
D. ES
【单选题】
What is the effect of the asa command crypto isakmp nat-traversal？___
A. It opens port 500 only on the out side interface
B. It opens port 500 only on the inside interface
C. It opens port 4500 on all interfaces that are IPSec enabled
D. It opens port 4500 only on the out side interfac
【单选题】
Which Fire POWER preproce ssor engine is used to prevent SYN attacks？___
A. Inline normalization
B. IP Defragmentation
C. Ports can
D. etection
【单选题】
Which NAT type allows objects or groups to reference an IP address ？___
A. identity NAt
B. static NAT
C. dynamic
D. dynamic NAT
【单选题】
Which Auto NAT policies are processed first？___
A. Dynamic NAT with longest prefix
B. Dynamic NAT with shortest prefix
C. static NAT with longest prefix
D. static NAT with shortest prefix
【单选题】
Which feature allows a dynamic Pat pool to se lect the next address in the pat pool instead of the next port of an existing address？___
A. next IP
B. round robin
C. dynamic rotation
D. NAT address rotation
推荐试题
【单选题】
关于电源系统的EGIU，正确的说法是：___
A. A．是EngineGroundInterfaceUnit的缩写
B. B．A319有两台，A320有三台
C. C．作用是改变GCU来的数据格式送到CFDIU
D. D．A319将EGIU的功能合成在2台GCU内
【单选题】
A319的增强型发电系统有几个控制组件？___
A. A．3个GCU,2个EGIU,1个GPCU
B. B．3个GCU,2个EGIU,1个GAPCU
C. C．3个GCU,1个GAPCU
D. D．2个GCU,一个GAPCU
【单选题】
APU发电机滑油出口温度信号传送给谁？___
A. 传送给电子控制盒（ECB）；
B. 直接给发电机控制组件（GCU）；
C. 通过电子控制盒（ECB）传送给发电机控制组件（GCU）。
D.
【单选题】
EGIU有两个隔离通道：通道1被分配给（）；通道2被分配给（）。___
A. IDG1或IDG2APU发电机或外部电源；
B. APU发电机或外部电源IDG1或IDG2；
C. IDG1或APU发电机IDG2或外部电源。
D.
【单选题】
厨房的电源是115V交流电，所有厨房的功率之和是（）KVA，供电功率分为两部分，后厨房的功率是（）KDVA，前厨房的功率是20KVA。___
A. 4020；
B. 5030；
C. 5535。
D.
【单选题】
当地面电源车连接到飞机电网上，在外部电源插座上有什么指示？___
A. 没有使用（NOTINUSE）灯和可用（AVAIL）灯都亮；
B. 没有使用（NOTINUSE）灯灭而可用（AVAIL）灯亮；
C. 没有使用（NOTINUSE）灯和可用（AVAIL）灯都灭。
D.
【单选题】
当地面电源车运转，且供电开关置于打开（ON）位，在驾驶舱里压入外电源（EXTPWR）按钮而没有任何指示，代表什么意思？___
A. 已向GPCU（地面电源控制组件）供电，并且EPC（外部电源接触器）打开；
B. 未向GPCU（地面电源控制组件）供电，并且EPC（外部电源接触器）打开；
C. 已向GPCU（地面电源控制组件）供电，并且EPC（外部电源接触器）闭合。
D.
【单选题】
当发电机1和发电机2线路接触器闭合时，什么时候发电机1故障（GEN1FAULT）灯亮？___
A. 当发电机1线路（GEN1）按钮松出时；
B. 当发电机1任何一个参数不正确时；
C. 当发电机1任何一个参数不正确并且发电机1线路（GEN1）按钮松出时。
D.
【单选题】
当发动机发电机连在电网上，外电源在使用（EXTPWRON）灯亮是什么意思？___
A. 外电源向交流汇流条1和2供电；
B. 外电源接触器被控制闭合；
C. 外电源向交流/直流地面服务汇流条供电。
D.
【单选题】
当飞机速度大于（）并且（）交流主汇流条失电时，（）给冲压空气涡轮的（）通电，冲压空气涡轮自动放出。___
A. 100KT二个热电瓶汇流条1电磁线圈1；
B. 500KT二个热电瓶汇流条2电磁线圈2；
C. 100KT一个热电瓶汇流条2电磁线圈2。
D.
【单选题】
当交流主供电（ACESSFEED）按钮松出时（ALTN位），飞机电网的正常供电如何变化？___
A. 交流主汇流条由应急交流发电机供电；
B. 交流主汇流条由交流汇流条1供电；
C. 交流主汇流条由交流汇流条2供电。
D.
【单选题】
电源系统的系统、电路和部件大都使用一个由字母和数字组成的参考代码来识别，参考代码的第一个字母用来识别（），参考代码的第二个字母用来识别系统内的（）。___
A. 电路部件；
B. 系统电路；
C. 电路系统。
D.
【单选题】
电源系统的系统、电路和部件大都使用一个由字母和数字组成的参考代码来识别，如果参考代码的第二个字母是M，表示这是一个（）设备。___
A. 机械；
B. 电气；
C. 电子。
D.
【单选题】
发电机的控制和保护功能主要是由（）提供的。___
A. 发电机控制继电器和发电机线路接触器；
B. 发电机线路接触器和电源准备继电器；
C. 发电机控制继电器和电源准备继电器。
D.
【单选题】
发动机发电机、APU发电机、应急发电机的功率分别是___
A. 90KVA90KVA5KVA；
B. 90KVA5KVA90KVA；
C. 5KVA90KVA90KVA。
D.
【单选题】
飞机在地面连接上地面电源车时，GPCU（地面电源控制组件）由谁供电？___
A. 地面电源车和直流电瓶汇流条；
B. 只由直流电瓶汇流条供电；
C. 只由地面电源车供电。
D.
【单选题】
交流电连结(ACTRANSFER)电路向交流汇流条供电的优先权是：___
A. ①发电机1供给相应的交流电汇流条1，发电机2供给相应的交流电汇流条2；②外部电源（即使一台发动机的发电机已运转并向相应的汇流条供电）；③只有一台发动机发电机；④APU发电机。
B. ①发电机1供给相应的交流电汇流条1，发电机2供给相应的交流电汇流条2；②APU发电机；③外部电源（即使一台发动机的发电机已运转并向相应的汇流条供电）；④只有一台发动机发电机。
C. ①发电机1供给相应的交流电汇流条1，发电机2供给相应的交流电汇流条2；②外部电源（即使一台发动机的发电机已运转并向相应的汇流条供电）；③APU发电机；④只有一台发动机发电机。
D.
