【单选题】
特殊条件下的超高顺坡，可根据具体情况规定，但不得大于___。
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【单选题】
两曲线轨距加宽按1‰递减，其终点间的直线长度应不短于___。
A. 8m
B. 9m
C. 10m
D. 11m
【单选题】
两曲线轨距加宽按___递减，其终点间的直线长度应不短于10m。
【单选题】
在困难条件下，车辆段（场）线上的轨距加宽允许按___递减。
【单选题】
尖轨尖端轨距加宽，按不大于___递减至基本轨接头。
【单选题】
导曲线中部轨距加宽，直尖轨时，向两端递减至尖轨跟端为___。
【单选题】
导曲线中部轨距加宽，直尖轨时，向两端递减至辙叉前端为___。
【单选题】
两尖轨尖端距离小于6m，两尖端处轨距相等时___，不相等时则从较在轨距向较小轨距均匀递减。
A. 以左侧为准递减
B. 以右侧为准递减
C. 不作递减
D. 同时递减
【单选题】
两尖轨尖端距离小于6m，两尖端处轨距相等时不作递减，不相等时则从___。
A. 右侧为准递减
B. 左侧为准递减
C. 较大轨距向较小轨距均匀递减
D. 较小轨距向较大轨距均匀递减
【单选题】
两尖轨尖端距离大于6m时，则按不大于___的递减率递减，但中间应有不短于6m的相等轨距段。
【单选题】
两尖轨尖端距离大于6m时，则按不大于6‰的递减率递减，但中间应有不短于___的相等轨距段。
【单选题】
道岔前端与另一道岔后端相连时，尖轨尖端轨距递减率应不大于___。
【单选题】
导曲线可根据需要设置6mm的超高，并在导曲线范围内按不大于___顺坡。
【单选题】
导曲线可根据需要设置___的超高，并在导曲线范围内按不大于2‰顺坡。
A. 4mm
B. 5mm
C. 6mm
D. 7mm
【单选题】
护轨平直部分轮缘槽如侧向轨距为___，则侧向轮缘槽标准宽度为48mm，容许误差为（+3，-1）mm。
A. 1439mm
B. 1440mm
C. 1441mm
D. 1442mm
【单选题】
护轨平直部分轮缘槽如侧向轨距为1441mm，则侧向轮缘槽标准宽度为___，容许误差为（+3，-1）mm。
A. 46mm
B. 47mm
C. 48mm
D. 49mm
【单选题】
护轨平直部分轮缘槽如侧向轨距为1441mm，则侧向轮缘槽标准宽度为48mm，容许误差为___mm。
A. +2，-1
B. +2，-3
C. +3，-1
D. +3，-2
【单选题】
正线道岔（直向）与曲线之间的直线段长度，不得短于___。
A. 18m
B. 19m
C. 20m
D. 21m
【单选题】
站线道岔与曲线或道岔与其连接曲线之间的直线段长度，一般不得短于___，困难条件下不得短于6m。
A. 7m
B. 7.3m
C. 7.5m
D. 8m
【单选题】
站线道岔与曲线或道岔与其连接曲线之间的直线段长度，一般不得短于7.5m，困难条件下不得短于___。
【单选题】
各种标志（警冲标除外）应设在钢轨头部外侧不小于2m处。不超过钢轨顶面的标志，可设在距钢轨头部外侧不小于___。
A. 1.15m
B. 1.25m
C. 1.35m
D. 1.45m
【单选题】
各种标志（警冲标除外）应设在钢轨头部外侧不小于___处。不超过钢轨顶面的标志，可设在距钢轨头部外侧不小于1.35m。
A. 1m
B. 1.5m
C. 2m
D. 2.5m
【单选题】
警冲标设在会合轨道线路两线间距为___的起点处中间，有曲线时按限界加宽办法加宽。
A. 2.5m
B. 3m
C. 3.5m
D. 4m
【单选题】
警冲标设在会合轨道线路两线间距不足3.5m 时，应设在___。
A. 靠近左线
B. 靠近右线
C. 两线最大间距的起点处中间
D. 两线最小间距的起点处中间
【单选题】
固定区爬行量超过___时，应分析原因，及时整治。
A. 8mm
B. 9mm
C. 10mm
D. 11mm
【单选题】
当发现线路连续出现___的碎弯时，必须加强巡查（可跟车巡查），观测轨温和线路方向的变化。
A. 1～3mm
B. 2～4mm
C. 3～5mm
D. 4～6mm
【单选题】
当钢轨断缝小于等于50mm时，应立即进行___。
A. 抢修处理
B. 永久处理
C. 紧急处理
D. 临时处理
【单选题】
钢轨折损严重或断缝大于50mm，以及紧急处理后，断缝仍继续扩大，应封锁线路进行___。
A. 永久处理
B. 紧急处理
C. 临时处理
D. 抢修处理
【单选题】
道岔两尖轨尖端相错量不得超过___。
A. 8mm
B. 9mm
C. 10mm
D. 11mm
【单选题】
钢轨接头轨面或内侧错牙不得大于___。
A. 4mm
B. 3mm
C. 2mm
D. 1mm
【单选题】
木枕地段线路捣固时，应在钢轨两侧各___范围内捣实道床，轨下部分加强捣固。
A. 200mm
B. 300mm
C. 400mm
D. 500mm
【单选题】
改道时，混凝土枕地段应调整不同号码扣板、轨距挡板，并可用加垫片的方法调整尺寸，但厚度不得超过___。
A. 5mm
B. 4mm
C. 3mm
D. 2mm
【单选题】
起道前应先___。
A. 除锈
B. 打磨
C. 调整高低
D. 拨正线路方向
【单选题】
木枕宽面在下，顶面与底面同宽时，应使___。
A. 树心一面向左
B. 树心一面向右
C. 树心一面向上
D. 树心一面向下
【单选题】
接头螺栓扭矩不足时，不得低于规定值___以上。
A. 70N·m
B. 80N·m
C. 90N·m
D. 100N·m
【单选题】
缓和曲线与直线连接处不得有___或“鹅头”。
【单选题】
折返线和共线道岔腰鼓螺栓应___在维修时全面更换一次，其他整体道床道岔每隔三年在维修时全面更换一次。
A. 每隔五年
B. 每隔四年
C. 每隔三年
D. 每隔二年
【单选题】
折返线和共线道岔腰鼓螺栓应每隔二年在维修时全面更换一次，其他整体道床道岔___在维修时全面更换一次。
A. 每隔六年
B. 每隔五年
C. 每隔四年
D. 每隔三年
【单选题】
普通线路道岔和无缝线路缓冲区的重伤和折断钢轨应及时___。
A. 设置限速
B. 禁锢扣件
C. 安装急救器
D. 更换
【单选题】
接触网地段需要拨道时，线路中心位置不得超过___。
A. ±15mm
B. ±20mm
C. ±25mm
D. ±30mm
【单选题】
接触网地段需要拨道时，一年单侧累计拨道量不得超过___。
A. 105mm
B. 110mm
C. 115mm
D. 120mm
推荐试题
【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
【单选题】
In which type of attack does an attacker overwrite an entry in the CAM table to divert traffic destined to a legitimate host？___
A. DHCP spoofing
B. ARP spoofing
C. CAM table overflow
D. MAC spoofing
【多选题】
Which two attack types can be prevented with the impleme ntation of a Cisco IPS solution？___
A. DDos
B. man-in-the-middle
C. worms
D. ARP spoofing
E. VLAN hopping
【多选题】
choose four___
A. DHCP snooping ——————————blocks DHCP messages
B. Dynamic ARP inspection——————verifies IP-to-MAC traffic on untrusted ports
C. IP sources guard ——————————provides layer 2 interface security with ports ACLs
D. Port security————————————mitigates MAC-address spoofing at the access interface
【多选题】
choose four___
A. Step1————————run the system setup wizard
B. Step2————————add an authentication realm
C. Step3————————configure identity management
D. Step4————————configure directory group
【多选题】
What are two advanced features of the Cisco AMp solution for endpoints ___
A. contemplation
B. foresight
C. sandboxing
D. reputation
E. reflection
【多选题】
Which two characteristics of RADIUS are true？___
A. It encrypts only the password between user and server.
B. It uses TCP ports 1812/1813
C. It uses UDP ports 1812/1813.
D. It uses UDP port 49
E. It uses TCP port 49
【多选题】
What are two challenges of using a network-based IPS？ ___
A. It is unable to determine whether a detected attack was successful
B. It requires additional storage and proce ssor capacity on syslog servers
C. As the network expands， it requires you to add more sensors.
D. It is unable to detect attacks across the entire network
E. It must support multiple operating systems.
【多选题】
What are two default be haviors of the traffic on a zone-based firewall？___
A. Traffic within the self -zone uses an im plicit deny all.
B. All traffic between zones is implicitly blocked
C. Communication is allowed between interfadAss that are members of the same zone
D. Communication is blocked between interfaces that are members of the same zone
E. The CBAC rules that are configured on router interfaces apply to zone interfaces
【多选题】
Which two advantages does the on-premise model for MDM deployment have over the cloud-based model？___
A. The on-premise model is easier and faster to de ploy than the cloud-based model
B. The on-premise model is more scalable than the cloud-based model
C. The on-premise model is generally less expensive than the cloud-based model
D. The on-premise model generally has less latency than the cloud- based model.
E. The on-premise model provides more control of the MDM solution than the cloud
【多选题】
Which two actions can an end usts take to manage a lost or stolen device in Cisco ISE？ ___
A. Activate Cisco ISE End point Protection Services to quarantine the device.
B. Add the mac address of the device to a list of blacklisted devices
C. Force the device to be locked with a PIN
D. Request revocation of the digital certificate of the device.
E. Reinstate a device that the user previously marked as lost or stolen
【多选题】
Which two problems can arise when a proxy firewall serves as the gateway between networks？___
A. It can prevent content caching
B. It can limit application support
C. It is unable to prevent direct connections to other networks
D. It can cause reduced throughput.
E. It is unable to provide antivirus protection
【多选题】
When using the Adaptive Security Device Manager（ASDM）， which two methods are available to add a new root certificate？___
A. Use sCep
B. Install from SFTP server
C. Install from a file
D. Use Https
E. Use LDAP
【多选题】
Which two are considered basic security principles？___
A. Accountability
B. Redundancy
C. High Availabilit
D. Integrity
E. Confidentiality
【多选题】
Which two roles of the Cisco WSA are true？___
A. IPS
B. firewall
C. antispam
D. web proxy
E. URL filter
【单选题】
Which next-generation encryption algorithm supports four variants？___
A. SHA-2
B. SHA-1
C. MD5
D. HMAC
【单选题】
What aims to remove the abil ity to deny an action？___
A. Non-Repudiation
B. Accountability
C. Integrity
D. Deniability
【单选题】
Which statements about the native VLAN is true ？___
A. It is susceptible to VLAN hopping attacks.
B. It is the Cisco recommended VLAN for switch-management traffic
C. It is most secure when it is a ssigned to vLAn 1.
D. It is the cisco-recomme nded vlan for user traffic
【单选题】
There are two versions of IKE:IKEv1 and IKEv2. Both IKEv1 and IKEv2 protocols operate in phases IKEv1 operates in two phases. IKEv2 operates in how many phases？___
【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
【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
