【单选题】
What does the dh group refer to？___
A. length of key for hashing C
B. length of key for encryption
C. tunnel lifetime key
D. length of key for key exchange
E. length of key for authentication
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相关试题
【单选题】
Which path do you follow to enable aaa through the SDM ？___
A. Configure Tasks > AAA
B. Configure > Addition Authentication > AAA
C. Configure > AAA
D. Configure > Additional Tasks > AAA
E. Configure Authentication > AAA
【单选题】
which technology cloud be used on top of an MPLS VPN to add confidentiality ？___
A. IPsec
B. 3DES
C. AES
D. SSL
【单选题】
Which term is most closely aligned with the basic purpose of a SIEM solution? ___
A. Non-Repudiation
B. Accountability
C. Causality
D. Repudiation
【单选题】
You have just deployed SNMPv3 in your environment， Your manager asks you to make sure that our SNMP agents can only talk to the SNMP Manager. What would you configure on your SNMI agents to satisfy this request？___
A. A SNMP View containing the SNMP managers
B. Routing Filter with the SNMP managers in it applied outbound
C. A standard ACL containing the SNMP managers applied to the SNMP configuration
D. A SNMP Group containing the SNMP managers
【单选题】
Which feature prevents loops by moving a nontrunking port into an errdisable state when a BPDU is received on that port？___
A. BPDU filte
B. DHCP snooping
C. BPDU guard
D. Port Fast
【单选题】
Which command enables port security to use sticky MAC addresses on a switch？___
A. switchport port-security violation restrict
B. switchport port-security mac-address sticky
C. switchport port-security violation protect
D. switchport port-security
【单选题】
When you edit an IPS subsignature， what is the effect on the parent signature and the family of subsignatures？___
A. The change applies to the parent signature and the entire family of subsignatures
B. The change applies to the parent signature and the subsignature that you edit
C. The change applies only to subsignatures that are numbered sequentially after the subsignature that you edit
D. Other signatures are unaffected， the change applies only to the subsignature that you dit
【单选题】
Which type of mechanism does Cisco FirePOWER de ploy to protect ag detected moving across other networks？___
A. antivirus scanning
B. policy-based
C. reputation-based
D. signature-based
【单选题】
What action must you take on the ise to blacklist a wired device？___
A. Locate the switch through which the device is connected and push an a cl restricting all access by the device
B. Issue a CoA request for the de vice's mac address to each access switch in the network
C. Revoke the device's certificate so it is unable to authenticate to the network
D. Add the device's MAc address to a list of black listed devices
【单选题】
Which type of firewall can perform deep packet inspection？___
A. packet-filtering firewall
B. stateless firewall
C. application firewall
D. personal firewall
【单选题】
What is the main purpose of Control Plane Policing？___
A. to prevent exhaustion of route-proce ssor resources
B. to organize the egress packet queues
C. to define traffic classes
D. to maintain the policy map
【单选题】
Which attack can be prevented by OSPF authentication？___
A. smurf attack
B. IP spoofing attack
C. denial of service attack
D. buffer overflow attack
【单选题】
What is the best definition of hairpinning？___
A. ingress traffic that traverses the outbound interface on a device
B. traffic that enters one interface on a device and that exits through another interface
C. traffic that enters and exits a device through the same interface
D. traffic that tunnels through a device interface
【单选题】
Which SNMPv3 security level provides authentication using HMAC with MD5， but does not use encryption？___
A. authPriv
B. authNo Priv
C. noAuthNoPriv
D. NoauthPriv
【单选题】
You have implemented a dynamic blacklist， using security intelligence to block illicit network activity. However， the blacklist contains several approved connections that users must access for usiness pur poses. Which action can you take to retain the blacklist while allowing users to access the approve d sites？___
A. Create a whitelist and manually add the approved addresses.
B. Disable the dynamic blacklist and deny the specif ic address on a whitelist while permitting the others
C. Edit the dynamic blacklist to remove the approved addresses
D. Disable the dynamic blacklist and create a static blacklist in its place
【单选题】
When connecting to an external resource,you must change a source IP address to use one IP address from a range of 207.165.201.1 to 207.165.1.30. Which option do you implement ?___
A. dynamic source NAT that uses an IP ad dress as a mapped source
B. static destination NAT that uses a subnet as a real de stination
C. dynamic source NAT that uses a range as a mapped source
D. static destination NAT that uses a subnet as a real source
【单选题】
Refer to the exhibit. 【nat（ins，any）dynamic interface】Which ty pe of NaT is configured on a Cisco ASA？___
A. dynamic NAT
B. source identity NAT
C. dynamic PAT
D. identity twice NAT
【单选题】
Which mitigation technology for web-based threats prevents the removal of confidential data from the network？___
A. CTA
B. DCA
C. AMP
D. DLP
【单选题】
Refer to the exhibit. What is the effect of the given configuration？___
A. It establishes the preshared key for the switch
B. It establishes the preshared key for the firewall.
C. It establishes the preshared key for the Cisco ISE appliance
D. It establishes the preshared key for the router.
【多选题】
What are two major considerations when choosing between a SPAN and a TAP when plementing IPS？___
A. the type of analysis the iS will perform
B. the amount of bandwidth available
C. whether RX and TX signals will use separate ports
D. the way in which media errors will be handled
E. the way in which dropped packets will be handled
【多选题】
What are two direct-to-tower methods for redirecting web traffic to Cisco Cloud Web Security？___
A. third-party proxies
B. Cisco Catalyst platforms
C. Cisco NAC Agent
D. hosted PAC files
E. CiSco ISE
【多选题】
Which three descriptions of RADIUS are true？ ___
A. It uses TCP as its transport protocol.
B. Only the password is encrypted
C. It supports multiple transport protocols
D. It uses UDP as its transport protocol
E. It combines authentication and authorization
F. It separates authentication，authorization，and accounting
【多选题】
Which two configurations can prevent VLAN hopping attack from attackers at VLAN 10？___
A. using switchport trunk native vlan 10 command on trunk ports
B. enabling BPDU guard on all access ports
C. creating VLAN 99 and using switchport trunk native vlan 99 command on trunk ports
D. applying ACl between VLAN
E. using switchport mode access command on all host ports
F. using switchport nonegotiate command on dynamic desirable ports
【多选题】
What are two features of transparent firewall mode ___
A. It conceals the presence of the firewall from attackers
B. It allows some traffic that is blocked in routed mode
C. It enables the aSA to perform as a router.
D. It acts as a routed hop in the network.
E. It is configured by default
【多选题】
Which two models of A sa tend to be used in a data center？___
A. 5555X
B. 5585X
C. ASA service module
D. 5512X
E. 5540
F. 5520
【多选题】
Which two statements about hardware-based encrption are true？___
A. It is widely accessible
B. It is potentially easier to compromise than software-based encryption. It requires minimal configuration
C. It requires minimal configuration
D. It can be implemented without impacting performance
E. It is highly cost-effective
【多选题】
In which two modes can the Cisco We b Security appliance be de ployed？___
A. as a transparent proxy using the Secure Sockets Layer protocol
B. as a transparent proxy using the Web Cache Communication Protocol
C. explicit proxy mode
D. as a transparent proxy using the Hyper Text Transfer Protocol
E. explicit active mode
【单选题】
1．三相刀开关的图形符号与交流接触器的主触点符号是___。
A. 一样的
B. 可以互换
C. 有区别的
D. 没有区别
【单选题】
5．熔断器的作用是___。
A. 短路保护
B. 过载保护
C. 失压保护
D. 零压保护
【单选题】
6．热继电器的作用是___。
A. 短路保护
B. 过载保护
C. 失压保护
D. 零压保护
【单选题】
7．交流接触器的作用是可以___接通和断开负载。
【单选题】
8．三相异步电动机的启停控制线路由电源开关、熔断器、___、热继电器、按钮等组成。
A. 时间继电器
B. 速度继电器
C. 交流接触器
D. 漏电保护器
【单选题】
9．三相异步电动机的启停控制线路中需要有___、过载保护和失压保护功能。
A. 短路保护
B. 超速保护
C. 失磁保护
D. 零速保护
【单选题】
10维修电工以___、安装接线图和平面布置图最为重要。
A. 电气原理图
B. 电气设备图
C. 电气安装图
D. 电气组装图
【单选题】
11．熔断器的额定电压应___线路的工作电压。
A. 远大于
B. 不等于
C. 小于等于
D. 大于等于
【单选题】
12．对于电阻性负载，熔断器熔体的额定电流___线路的工作电流。
A. 远大于
B. 不等于
C. 等于或略大于
D. 等于或略小于
【单选题】
13．对于电动机负载，熔断器熔体的额定电流应选电动机额定电流的___倍。
A. 1~1.5
B. 1.5-2.5
C. 2.0~3.0
D. 2.5~3．5
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【填空题】
15、绝缘靴、绝缘手套等安全用品，外观检查发现有___、裂损等现象禁止使用。
【填空题】
16、 ___是向电力机车直接输送电能的设备，电力机车升弓后便可从其取得电能，用以牵引列车.
【填空题】
17、所有接触网设备，自第一次受电开始，在未办理停电接地手续之前，均按___对待。★18雷电天，禁止在接触网下行走、___。
【填空题】
★18雷电天，禁止在接触网下行走、( )。
【填空题】
20、跨步电压是电流从接地处四散流出，在地面上形成不同的电位分布，人走近短路点时，两脚之间的___
【简答题】
★1、接触网带电情况下，严禁未做好那些措施就攀登机车顶部?
【简答题】
3、隔离开关操作前，需做好哪些防护方准操作?
【简答题】
4.机车在区间运行时，司机发现车列上有人扒乘，应如何处理?
【简答题】
5、为了预防触电，接触网下对冲洗机车，内燃机车放油、放水有何规定?
【简答题】
6、电气化区段机车在区间运行时， 司机发现车列上有人扒乘，如何处理?
【简答题】
★8、电气化区段在处理机车顶部故障、突发事件时，必须做到哪些规定?
【简答题】
9、简述乘务人员挂、摘接地线时的操作顺序?
【简答题】
2电气化铁路及附近发生火灾时，如何处理?
【简答题】
3、简述电气化铁路的构成? (文字 或图示均可)
【简答题】
4、各种车辆和行人通过电气化铁路平交道口必须遵守哪些规定?
【单选题】
我们在一起多少天？
A. 630
B. 635
C. 640
D. 645
【单选题】
我给你唱的第一首歌是什么？
A. 青藏高原
B. 分手快乐
C. 团结就是力量
D. 画心
【单选题】
我现在最想拥有
A. iPhone
B. MacBook
C. 最新的ipad
D. surface
【单选题】
我为啥老哭
A. 老公老欺负我
B. 我自己爱哭
C. 没钱
D. 妈妈不疼爱我
【单选题】
我这两天在看什么剧
A. 芈月传
B. 考研数学
C. 狮子王
D. 天空之城
【单选题】
我最喜欢的台湾作家是谁
A. 林清玄
B. 龙应台
C. 简禎
D. 毕淑敏
【单选题】
我和你一起没有如果哪里
A. 岳麓书院
B. 五一广场
C. 橘子洲头
D. 世界之窗
【单选题】
我最想去你家吃啥
A. 手擀面
B. 锅包肉
C. 火锅
D. 啥都想吃
【单选题】
我最怕你做什么
A. 批评我
B. 生我气
C. 趁我睡觉抠我肚脐眼
D. 给我吃好吃的让我长胖
【单选题】
我最喜欢对你做什么
A. 用袜子臭你
B. 用舌头舔你
C. 向你放屁
D. 把你嘴唇拽起来弹回去
【单选题】
我们今年最大的目标是什么
A. 攒钱
B. 上研
C. 变美变帅
D. 减肥
【单选题】
我最喜欢什么色号的口红
A. 豆沙色
B. 姨妈色
C. 牛血色
D. 我对口红不感兴趣
【单选题】
你生日那天我送你多少红包
A. 520
B. 52
C. 5.2
D. nothing
【单选题】
我是你的哪个宝贝
A. 大宝贝
B. 二宝贝
C. 小宝贝
D. 小小宝贝
【多选题】
以下哪些我有
A. 姨家弟弟
B. 姑家弟弟
C. 舅家哥哥
D. 大爷家哥哥
