【单选题】
城市轨道交通信号系统的功能主要包括___和调度指挥四个方面。
A. 联锁、闭塞、列车运行
B. 联锁、列车控制、列车运行
C. 联锁、闭塞、列车控制
D. 闭塞、列车控制、列车运行
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相关试题
【单选题】
下列哪个不是地铁车辆基地信号系统的功能？___
A. 进路控制
B. 维修管理
C. 车辆调度
D. 列车编组
【单选题】
计轴AZS350U计轴磁头工作电压是___。
A. 24V
B. 12V
C. 6V
D. 18V
【单选题】
11电缆允许的弯曲半径：非铠装电缆不小于电缆外径的___, 铠装电缆不小于电缆外径的（ ）。
A. 10倍 15倍
B. 10倍 12倍
C. 8倍 12倍
D. 12倍 14倍
【单选题】
LED信号机的接地电阻为小于___。
A. 5欧姆
B. 10欧姆
C. 15欧姆
D. 20欧姆
【单选题】
（室外）计轴系统接地电阻值小于等于___。
A. 2欧姆
B. 5欧姆
C. 6欧姆
D. 4欧姆
【单选题】
信号机在___情况下才能使2DJ继电器吸起。
A. 办理接车进路
B. 办理调车进路
C. 办理引导进路
D. 办理折返进路
【单选题】
室外AP光纤经过熔纤机后连接到___。
A. 串口
B. 核心交换机
C. 环路交换机
D. 服务器
【单选题】
ZDJ9是___类型的转辙机。
A. 电动
B. 电液
C. 电空
D. 不能确定
【单选题】
三显示信号机灯位排列顺序是___。
A. 红绿黄
B. 黄绿红
C. 绿红黄
D. 黄红绿
【单选题】
ZDJ9转辙机的启动电源为___。
A. AC 110V
B. AC 220V
C. 三相交流380 V
D. DC 36V
【单选题】
应答器用于___列车位置，并且将安全位置不确定性设置为一个绝对值。
A. 改变
B. 测量
C. 定位
D. 重新调整
【单选题】
如果在CTC级定位状态变为“失去定位”，则车载子系统将触发紧急制动，同时在停稳后转为RM模式和___级。
A. SM
B. CTC
C. ITC
D. 联锁控制IXLC
【单选题】
如果列车位于道岔区域，而道岔___，则定位状态将变为“失去定位”。
A. 位置已知
B. 正在转换
C. 位置未知
D. 未能锁闭
【单选题】
在检测到___应答器，同时所测量的两个应答器之间的距离与TDB相符之后，定位状态会变为“已定位”。
A. 三个连续的
B. 两个连续的
C. 一个
D. 两个
【单选题】
填充应答器设置在相应主信号机前方至少___常用制动距离之外的地方，这样当主信号应答器已经转变为“通过”时，列车通过填充应答器时可以避免产生制动。
【单选题】
填充应答器实际上是主信号应答器MA信息包的转发器，即，如果显示为通过信号，则填充应答器发送和相应的主信号应答器___的移动授权信息。
A. 不同
B. 相同
C. 更长的
D. 更短的
【单选题】
___应答器设置在分歧道岔之后、主信号应答器的非确定的ITC_MA以内，用以更新列车的实际移动授权，以使列车获得确定的保护点（POP）和运营停车点（OSP）。
【单选题】
___应答器根据信号机的显示，向通过该应答器的车载子系统以应答器报文的形式发送ITC运行授权。
A. 固定
B. 可变
C. 主信号
D. 重定位
【单选题】
列车经过固定应答器时，固定应答器会向车载子系统发送一个安全相关的___报文。
A. 地点
B. 移动授权
C. 应答器
D. 位置报告
【单选题】
车载子系统和轨旁列车数据库WCU_TTS之间的通信基于操作状态报文、运营状态报文（OOS）和时间报文（TTM）之间的___交换。
A. 一次性
B. 不间断
C. 周期性
D. 连续性
【单选题】
混合模式的优势在于，即便在降级模式，系统也可以提供完全的___防护，并且提供自动驾驶功能。
A. 防超速
B. 撞车
C. ATP
D. 安全
【单选题】
点式列车控制运行可以作为一种___模式（如当CTC设备出现故障时）。
【单选题】
点式列车控制运行,列车的间隔由基于传统进路监督（当允许列车越过信号机进入区间的所有进路条件满足时，给出开放信号显示）的___ 系统来保证。
A. ITC
B. ATP
C. 联锁
D. 闭塞
【单选题】
下列哪项不是进路解锁的内容？___
A. 解除已建立的进路
B. 解除道岔锁闭
C. 解除敌对进路锁闭
D. 解除信号机控制
【单选题】
哪种解锁方式不需要完全依靠于轨道电路的预期的有序的动作情况来判断列车或车列所处的位置？___
A. 正常解锁
B. 延时解锁
C. 中途折返解锁
D. 故障解锁
【单选题】
轨旁ATP设备的常规检查和例行维护的周期是___个月。
【单选题】
雷电侵入信号设备的主要途径有由___侵入、轨道电路侵入及由电缆侵入。
A. 交流电源
B. 直流电源
C. 信号机机构
D. 转辙机安装装置
【单选题】
排列进路时几组道岔要求定位则都要定位，要反位时则都要求在反位的道岔叫___。
A. 带动道岔
B. 联动道岔
C. 双动道岔
D. 防护道岔
【单选题】
计轴设备压模和不压模测试应力求做到绝对值相差___。
A. ≥15%
B. ≥30%
C. ≤30%
D. ≤15%
【单选题】
车载头尾冗余的转换，当一台OBCU发生故障时，可以实现___ 。
A. 自动转换
B. 人工转换
C. 紧急制动
D. 自动降级
【单选题】
下列不属于OBCU_ATP定位设备的是___。
A. OP
B. ATO
C. 应答器天线
D. 雷达
【单选题】
JZ.GD-1型微机计轴系统，一个计轴主机最多可以采集___ 点，输出一个区轨条件。
【单选题】
在正常运行中心ATS工作时，车站级ATS计算机（列车排路计算机TRC和时刻表处理器TTP)处于___状态。
A. 进程控制
B. 运转
C. 备用
D. 未连接
【单选题】
一辆正在驶入正线的车辆段列车，___则列车会自动从时刻表受到正确的新列车号。
A. 使用ARS功能
B. 打开追踪功能
C. 打开自排功能
D. 使用联锁手动排列从车辆段到正线的进路
【单选题】
下列关于排列进路的描述，错误的是___ 。
A. 需要选中两架信号机，才能执行排列进路操作
B. 若需要，进路排列时会自动转换道岔
C. 进路排列成功后，终端信号机将开放，绿色显示
D. 若进路存在 多条保护区 段，必须在下拉框中选择， 进路排列命 令才能执行
【单选题】
ATS信息采集周期应___1.0S。
A. 小于
B. 大于
C. 约等于
D. 小于等于
【单选题】
信号机构的灯室之间不应窜光，并不应因外光___而造成错误显示。
A. 折射
B. 反射
C. 平射
D. 以上都不是
【单选题】
计算机联锁系统应具有对室外联锁设备的___功能。
【单选题】
电源屏增加了很多新的功能，下列哪一项功能不是新增的___。
A. 旁路输出功能
B. VS功能
C. 故障告警信息
D. OVD功能
【单选题】
下列关于AM列车驾驶模式说法不正确的是___ 。
A. 自动运行（ATO）
B. 通过ATO启动按钮发车
C. 人工操作
D. 全面ATP监督
推荐试题
【单选题】
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
C. Traffic is isolated based upon how you configure routing on the device
D. The management interface is configured in a special vRF that provides traffic isolation from the default routing table
【单选题】
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
C. the asa uses the most specific match
D. Auto NAT policies are applied first
【单选题】
Which information can you display by executing the show crypto ipsec sa command？___
A. ISAKMP SAs that are established between two peers
B. recent changes to the IP address of a peer router
C. proxy infor mation for the connection between two peers
D. IPsec SAs established between two peers
【单选题】
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.
【单选题】
What term can be defined as the securing， control， and identification of digital data？___
A. cryptography
B. crypto key
C. cryptoanalysis
D. cryptology
【单选题】
Which feature in the dNS security module provide on and off network DNS protection？___
A. Data Loss Prevention
B. Umbrella
C. Real-time sandboxing
D. Layer-4 monitoring
【单选题】
Which a dverse consequence can occur on a network without BPDu guard ?___
A. The olde st switch can be elected as the root bridge
B. Unauthorized switches that are connected to the network can cause spanning-tree loops
C.
D. ouble tagging can cause the switches to experience CAM table overload.
【单选题】
What configuration is required for multitenancy ?___
A. shared infrastructure
B. multiple carriers
C. co-located resources
D. multiple separate zones
【单选题】
Why does ISE require its own certificate issued by a trusted CA？___
A. ISEs certificate allows guest devices to validate it as a trusted network device
B. It generates certificates for guest devices ba sed on its own certificate
C. It requests certificates for guest devices from the Ca server based on its own certificate.
D. ISE's certificate allows it to join the network security framework
【单选题】
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
【单选题】
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
【单选题】
Which type of malicious software can create a back-door into a device or network？___
A. bot
B. worm
C. virus
D. Trojan
【单选题】
Which security term refers to the like lihood that a weakness will be exploited to cause damage to an asset？___
A. threat
B. risk
C. countermeasure
D. vulnerability
【单选题】
Which IPS detection method examines network traffic for preconfigured patterns？___
A. signature-based detection
B. honey-pot detection
C. anomaly-based detection
D. policy-based detection
【单选题】
What is an advantage of split tunneling ？___
A. It allows users with a VpN connection to a corporate network to access the internet with sending traffic across the cor porate network.
B. It allows users with a vpn connection to a corporate network to access the internet by using the vPN for security.
C. It protects traffic on the private network from users on the public network
D. It enables the VPN server to filter traffic more efficiently
【单选题】
Which IDS/IPS state misidentifies acceptable behavior as an attack ？___
A. false negative
B. true positive NEKA G
C. true negative
D. false positive
【单选题】
What is the maximum num ber of methods that a single method list can contain？___
【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？___
