【单选题】
为缩短抢修时间，尽快恢复供电、行车，采取临时修复措施，尽快地恢复设备正常状态；在事故抢修工作中，所有对接触网故障做出的临时性修复措施，必须由___及以上职别的人员确认。
A. 接触网工程师
B. 技术员
C. 工班长
D. 安全员
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相关试题
【单选题】
巡视中，如发现接触网上异物 可能影响受电弓的运行，立即向___汇报并要求封锁区间进行处理。
A. 行调
B. 电调
C. 环调
D. 维修调度
【单选题】
馈线断线、终端脱落处理程序中处理步骤顺序正确的是___。1.停电、验电接地、设置防护。2.检查绝缘距离及相关设备，保证足够限界。 3.处理损伤的馈线断头（绑扎或剪断） 4.人员分工
A. 1234
B. 2314
C. 4132
D. 4123
【单选题】
锚段关节腕臂绝缘子折断故障处理时应拆除折断腕臂上的接触悬挂和___。
A. 接触线线夹
B. 腕臂
C. 馈线线夹
D. 定位器
【单选题】
绝缘关节两线间绝缘距离无法保证时，采用___的方式，变绝缘锚段关节为非绝缘锚段关节。
A. 合越区
B. 装电联接
C. 拆电联接
D. 分上网隔开
【单选题】
绝缘锚段关节合成绝缘子折断故障处理过程中合成绝缘子无法更换时，用钢线卡子___一截承力索或接触线，合上越区开关。
【单选题】
补偿绳断裂故障处理中利用链条葫芦、紧线器、拉力带把接触悬挂重新拉起；也可以在链条葫芦前串入___把接触悬挂拉起
A. D型卸扣
B. 拉力带
C. 麻绳
D. 合成绝缘子
【单选题】
吊柱脱落故障处理中利用周围可以借力的其他设备或在隧道拱顶打膨胀螺栓，用合成绝缘子斜拉或___吊起承力索、地线和馈线。
A. 针式绝缘子
B. 腕臂绝缘子
C. 悬式绝缘子
D. 棒式绝缘子
【单选题】
吊柱脱落故障处理中拉出值不能满足要求时，在隧道壁打膨胀螺栓或借力其他设备，采取 ___，固定接触线位置，调整绝缘间隙、导高、拉出值后开通运营。
A. 取消定位
B. 安装吊柱
C. 软定位
D. 安装绝缘子
【单选题】
电连接烧断故障处理中在不影响接触网供电和载流时利用铁线或电缆扎带绑扎电缆，保证___。
A. 导高
B. 抬高
C. 拉出值
D. 绝缘距离
【单选题】
电连接烧断故障影响接触网供电和___时，更换烧损的电连接线夹，用电连接线夹将烧断的电缆或裸铜导线接续。
【单选题】
中锚绳断裂或脱落，中锚绳损伤时直接用___将中心锚节绳剪掉重新安装新补偿绳或接续。
A. 液压断线钳
B. 大剪
C. 剥线钳
D. 尖嘴钳
【单选题】
道床起拱、沉降时接触网处理程序中将现场数据报告给抢修指挥。数据满足正常供电要求时要求行调___运行；同时，对持续起拱区域每个段时间进行测量数据；加强抢修待命。
【单选题】
抢修过程中承力索多处损伤或断股时可用___和钢线卡子分别将断裂处 并接承力索接续。
A. 120铜绞线
B. 95铜绞线
C. 50 铜绞线
D. 150铜绞线
【单选题】
抢修过程中如承力索损伤长度超过 ___ 米，需将承力索截断，两端串绝缘棒在附近的 吊柱或馈线底座临时下锚，拆除相应吊弦，在腕臂处加装吊索，采用简单悬挂方式处理，保证接触线的最低点在 4 米以上。
【单选题】
为避免与事故疏散人流相冲突，___统一各专业进入车站的事故抢修入口。
A. 通号中心
B. 维修中心
C. 客运分公司
D. OCC
【单选题】
抢修工作完成后的恢复供电程序安全员应执行的内容是___
A. 对接触网故障区段进行必要的巡视及测试。
B. 对接触网故障作出的临时性修复措施进行确认
C. 确认抢修方案已完成
D. 接现场抢修指挥的命令，按规定拆除接地线及防护后通知现场抢修 指挥。
【单选题】
承力索绝缘棒断裂时，用链条葫芦串入___临时替换绝缘棒，将葫芦 手柄、链条、承力索绑固，不影响行车后开通运营。
A. 针式绝缘子
B. 合成绝缘子
C. 悬式绝缘子
D. 棒式绝缘子
【单选题】
分段绝缘器吊弦脱落时，用___铁线制作临时吊弦代替，调整分段状态后开通运营。
A. 1.0
B. 2.0
C. 3.0
D. 4.0
【单选题】
分段绝缘器本体损坏严重或承力索绝缘棒断裂，用链条葫芦串入绝缘棒将分段 绝缘器卸载，封锁受影响的渡线或站线，在保证受力和___后开通正线运营
A. 导高拉出值
B. 绝缘距离
C. 载流
D. 供电
【单选题】
分段绝缘器脱落造成塌网，在断线处将渡线接触线脱离地面，在线岔处把___提高到一定高度,封锁渡线或站线后开通正线运营。
A. 承力索
B. 工支接触线
C. 非支接触线
D. 馈线
【单选题】
调整吊弦，使___满足受电弓在两锚段间顺利过渡。如果承力索与接触线并联下锚，则在本锚段关节的另一转换柱处按线岔调整。
A. 导高拉出值
B. 抬高
C. 结构高度
D. 绝缘距离
【单选题】
更换损坏的下锚绝缘子；可先使用___拉紧接触线，然后安装一条由紧线器、D 型卸扣、合成绝缘子、拉力带组成的临时受力件，再拆除葫芦，使临时受力件受力，绑扎好接触线，保证绝缘距离和设备限界， 恢复供电、行车。
A. 麻绳
B. 铁丝
C. 铜绞线
D. 链条葫芦
【单选题】
双接触线下锚单个齿形双耳楔型线夹脱落时，如现场有足够空间保证绝缘距离和___，可使用三角平衡板上的孔作为借力点，另一侧在接触线适当位置安装紧线器，用链条葫芦和拉力带拉紧接触线， 绑扎好链条葫芦手柄、链条和接触线，保证绝缘距离和不影响行车后恢复供电、行车。
A. 行车限界
B. 建筑限界
C. 设备限界
D. 侧面限界
【单选题】
承力索断线处理采用并联一段承力索时每端用 ___个钢线卡子。
【单选题】
接触线断线处理程序中在接触线的适当位置加装单吊弦线夹，用铁线悬吊使接触线不能低于___。
A. 工作支
B. 非工作支
C. 受电弓工作面
D. 标准导高
【单选题】
对上网隔离开关损坏时，经过现场人员确认及___批准，可合上相应的联络开关或越区开关。
A. 行调
B. 电调
C. 环调
D. 维修调度
【单选题】
发生弓网缠绕故障时，与___专业人员一起进行车顶设备故障处理。
【单选题】
级领导的指示。但应急抢修组必须坚持集中统一指挥的原则，即应急抢修组成员服从___的统一安排，防止多头指挥造成混乱。
A. 上级领导
B. 抢修组长
C. 安全员
D. 主管工程师
【单选题】
接触网抢修过程中尽快协调出清接触网故障设备所在的线路，根据事故现场需求调动 接触网作业车组到达现场属于___的执行内容。
A. 维修中心调度
B. OCC 行车调度
C. 备班人员
D. 应急抢修组
【单选题】
下列选项中接触网应急抢修组成员的职责属于抢修组长职责是___
A. 组织协调人员、物资调配及现场监督抢修方案的实施
B. 负责组织制定初步抢修方案并组织实施事故现场的接触网修复工作
C. 负责办理封锁线路手续及向电调要令、消令（或指定专人办理）；负责简单向电调汇报抢修方案及事故修复工作的进度
D. 负责第一时间通知相关人员，并记录事故修复全过程中的相关信息
【单选题】
抢修组长向电调及行调办理消令手续、通过车站控制室值班人员向行调销除线路封锁命令，并做好记录；通知接触网___抢修工作已完成。
A. 主管工程师
B. 技术员
C. 工班长
D. 值班员
【单选题】
如受电弓卡滞于汇流排，配合车辆抢修人员利用切割工具将卡入汇流排中的受电弓切除，___专业人员处理车辆顶部其它设施，确保绝缘距离。
【单选题】
安托山存车线由哪个供电臂供电___
A. S06
B. X06
C. S07
D. X07
【单选题】
科苑存车线由哪个供电臂供电___
A. S06
B. X06
C. S05
D. X05
【单选题】
福田存车线由哪个供电臂供电___
A. S08
B. X08
C. S09
D. X09
【单选题】
新秀存车线由哪个供电臂供电___
A. S12
B. X12
C. S13
D. X13
【单选题】
新秀下行折返线由哪个供电臂供电___
A. S12
B. X12
C. S13
D. X13
【单选题】
新秀上行折返线由哪个供电臂供电___
A. S12
B. X12
C. S13
D. X13
【单选题】
蛇口车辆段06道属于哪个供电分区___
A. A区
B. B区
C. C区
D. D区
E. E区
【单选题】
蛇口车辆段13道属于哪个供电分区___
A. A区
B. B区
C. C区
D. D区
E. E区
推荐试题
【单选题】
Refer to the exhibit for which reason is the tunnel unable to pass traffic___
A. the tunnel is failing to receive traffic from the remote peer
B. the local peer is unable to encrypt the traffic
C. the ip address of the remote peer is incorrect
D. UDP port 500 is blocked
【单选题】
Which type of attack can exploit design flaws in the implementation of an application without___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
How can you protect CDP from reconnaissance attacks？___
A. Enable dynamic ARP inspection on all untrusted ports.
B. Enable dot1x on all ports that are connected to other switches.
C.
D. isable CDP on ports connected to endpoints.
【单选题】
Which type of attack can exploit design flaws in the implementation of an application without ？___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
Which option is a key security compone nt of and MDM deployment ？___
A. using network-specific installer packages
B. using an application tunnel by default
C. using self-signed certificates to validate the server
D. using MS-CHAPv2 as the primary
E. AP method
【单选题】
Which Firepower Management Center feature detects and block exploits and hack attempts？___
A. Content blocker
B. file control
C. intrusion prevention
D. advanced malware protection
【单选题】
hich description of the nonsecret numbers that are used to start a Diffie- Hellman exchange is ture？___
A. They are preconfigured prime integers.
B. They are large pseudorandom numbers.
C. They are very small numbers chosen from a table of known valuses
D. They are numeric values extracted from ha shed system hostnames
【多选题】
Which two characteristics of an application layer firewall are true？___
A. provides stateful firewal functionality
B. has low processor usage
C. provides protection for multiple applications
D. provides rever se proxy services
E. is immune to URL manipulation
【多选题】
Which two devices are components of the BYOD architectural framework？___
A. Nexus 7010 switch
B. Cisco 3945 Router
C. Identify Services Engine
D. Wireless Access oints
E. Prime Infrastructure
【多选题】
Which two actions can a zone based firewall take when looking at traffic？ ___
A. forward
B. inspect
C. drop
D. broadcast
E. filter
【多选题】
n which two situations should you use in-band management？___
A. when management applications need concurrent access to the device
B. when you require administrator access from multiple locations
C. when a network device fails to forward packets
D. when you require ROMMON access
E. when the control plane fails to respond
【多选题】
What are two ways to prevent eavesdropping when you perform device management tasks？___
A. Use an SSH connection.
B. Use SNMPv3
C. Use out-of-band management
D. Use SNMP
E. Use in-band management
【多选题】
Which two features are commonly used CoPP and CPPr to protect the control plane？ ___
A. QoS
B. traffic classification
C. access lists
D. policy maps
E. class maps
F. Cisco Express Forwarding
【多选题】
Which four tunne ling prot ocols are enabled in the Dfit GrpPolicy group policy ？___
A. Clientless SSL VPN
B. SSL VPN Client
C. PPTP
D. L2TP/IPsec
E. IPsec IKEv1
F. IPsec IKEv2
【多选题】
Which two statements regarding the aSA VPN configurations are correct？___
A. The asa has a certificate issued by an external certificate authority associated to the ASDM TrustPoint1
B. The Default WEBVPNGroup Connection Profile is using the aaa with RADIUS server method
C. The Inside-srvbook mark references the https://192.168.1.2url
D. Only Clientless SSL VPN access is allowed with the Sales group policy
E. Any Connect， IPSec IKEv1， and IPSec IKEv2 VPN access is enabled on the outside interface
F. The Inside -SRV bookmark has not been applied to the Sales group policy
【多选题】
Which three ESP fields can be encrypted during transmission？___
A. Security Parameter Index
B. Sequence Number
C. MAC Address
D. Padding
E. Pad length
F. Next Header
【多选题】
.Which three statements de scribe DHCP spoofing attacks？___
A. They can modify traffic in transit.
B. They are used to perform man- in-the-middle attacks
C. They use ARP poisoning
D. They can access most network devices
E. They protect the ide ntity of the attacker by masking the DHCP address.
F. They are can physically modify the network gateway.
【多选题】
Which statement about the communication between interfaces on the same security level is true？___
A. Interfaces on the same security level require additional configuration to permit interinterface communication
B. Configuring interfaces on the same security level can cause asymmetric routing
C. All traffic is allowed by default between interfaces on the same security level
D. You can configure only one interface on a n individual security level
【多选题】
In which two situations should you use in band management？ ___
A. when the control plane fails to respond
B. when you require administrator access from multiple locations
C. when you require ROMMON access.
D. where a network device fails to forward packets
E. when multiple ma nagement applications need concument access to the device.
【多选题】
Which two features are supported in a VRF-aware softwar infrastructure before VRF-lite?___
A. multicast
B. fair queuing
C. WCCP
D.
E. IGRP
【多选题】
.Which loS command do you enter to test authentication again a AAA server？___
A. dialer aaa suffix <suffix> password <password>
B. ppp authentication chap pap test
C. test aaa-server authentication dialer group user name <user> password <password>
D. aaa authentication enable default test group tacases
【多选题】
Which two statements about the self zone on a cisco Xone based policy firewall are true？___
A. Multiple interfaces can be assigned to the self zone
B. it supports stateful inspections for multicast traffic
C. zone pairs that include the self zone apply to traffic transiting the device.
D. it can be either the source zone or the destination zone
E. traffic entering the self zone must match a rule
【多选题】
Which type of attack can exploit design flaws in the implementation of an application without ？___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
Which type of firewall can server as the interme diary between a client and a server ?___
A. Stateless firewall
B. application firewall
C. proxy firewall
D. personal firewall
【单选题】
What is the highest security level that can be configured for an interface on an ASA？___
【单选题】
Which term refers to the electromagnetic interference that can radiate from network cables？___
A. Gaussian distributions
B. Doppler waves
C. emanations
D. multimode distortion
【单选题】
How does a zone pair handle traffic if the policy de fination of the zone pair is missing?___
A. It inspects all traffic.
B. It drops all traffic.
C. It permits all traffic wihtout logging
D. It permits and logs all traffic
【单选题】
default how does a zone based firewall handle traffic to add from the self zone？___
A. It permits all traffic without inspection
B. It inspects all traffic to determine how it is handled
C. It permits all traffic after inspection
D. It frops all traffic
【单选题】
Which command should beused to ena ble AAA Authentication to determine if a user can access the privilege command level？___
A. aaa authentication enable local
B. aaa authentication enable level=
C. aaa authentication enable method de fault
D. aaa authentication enable defa ult local
【单选题】
On an ASA， the policy indicates that traffic should not be translated is often referred to as which of the following？___
A. NAT zero
B. NAT forward
C. NAT nul
D. NAT allow
【单选题】
Which protocol offers data Integrity encryption， authentication， and anti-replay functions for IPSec VPN？___
A. ESP protocol
B. IKEv3 Protocol
C. AH protoco
D. IKEv1 Protocol
【单选题】
Which component offers a variety of security Solution， including firwall， IF Antivirus and antiphishing features？___
A. Cisco loS router
B. Cisco ASA 5500 Ser ies security appliance
C. Cisco ASA 5500 X series Next Gen Security appliance
D. Cisco 4200 series IPS appliance
【单选题】
Refer to the exhibit， A Network Secur ity administrator check the ASa firewall NAT policy table rith show nat command， which statement is fails？___
A. There are only reverse translation matches for the REAL SERvER object
B. First policy in the Section 1 is a dynamic nat entry defined in the object configuration
C. NAT policy in section 2 is static entry de fined in the object configuration
D. Translation in Section 3 used when a connection does not matches any entries in first two sections
【单选题】
What is true of an aSa in transparent mode ?___
A. It supports OSPF
B. It requires an IP address for each interface
C. It requires a management IP address
D. It allows the use of dynamic NaT
【单选题】
What is the effect of the ip scp server enable command？___
A. It references an access list that allows specific SCP servers
B. It allows the router to initiate requests to an SCP server
C. It allows the router to become an SCP server
D. It adds SCP to the list of allowed copy functions
【单选题】
How can you mitigate attacks in which the attacker attaches more than one vLan tag to a packet？___
A. Assign an access VLAN to every active port on the switch
B. Disable Ether Channel on the switch
C. Explicitly identity each VLAN allowed across the trunk
D.
E. nable transparent VTP on the switch
【单选题】
Which technology can you implement to centrally mitigate potential threats when users on your network download files that might be malicious？___
A. Enable file-reputation services to inspect all files that traverse the company network and block files with low reputation scores
B. Verify that the compa ny IpS blocks all known malicious website
C. Verity that antivirus software is installed and up to date for all users on your network
D. Implement URL filtering on the perimeter firewall
【单选题】
What is the most common implementation of PaT in a standard networked environment？___
A. configuring multiple external hosts to join the self zo ne and to communicate with one another
B. configuring multiple internal hosts to communicate outside of the network using the outside interface IP address
C. configuring multiple internal hosts to communicate outside of the network by using the inside interface IP address
D. configuring an any any rule to enable external hosts to communicate inside the network
【单选题】
Which component of a bYod architecture provides aAa services for endpoint access ?___
A. Integrated Services Router
B. access point
C. ASA
D. Identity Services
E. ngine
【单选题】
You are configuring a NAT rule on a Cisco ASA ,Which description of a mapped interface is true?___
A. It is mandatory for all firewall modes
B. It is optional in routed mode
C. It is optional in transparent mode
D. It is mandatory for ide ntity NAT only
