【填空题】
100.25T型客车带___的轴端轴温,超过外温43℃时,观察运行;外温+60℃或绝对温度超过90℃,应停车检查。___
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101.半导体是指导电能力介于导体和___之间的物体。___
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102.使用___前,应先将表进行开路和短路测试,检查是否良好。___
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103.把发电机三个绕组的___接在一起,自三个始端引出三根相线向外送电,这种方式叫三相电源的星形连接。___
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104.电工常用的___按其在正常运用条件下允许的最高工作温度分级,称为耐热等级。___
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105.表头内阻包括动圈绕线的直流电阻、___和固定引线的直流电阻。___
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106.电子防滑器中的___对制动缸的控制形式有排气、充气、保压三种。___
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107.放大器的级间耦合有阻容耦合、直接耦合和___三种形式。___
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108.三相感应电动机常用的起动方式有___起动和降压起动等两种。___
【填空题】
109.发电机的运行特性包括空载特性、___特性、外特性等三种。___
【填空题】
110.三相鼠笼式电动机采用降压起动的目的是___。___
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111.DC600V供电客车综合控制柜控制Q15、Q16、Q25、Q26、Q7为隔离开关,严禁___操作。___
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112.DC600V供电客车综合控制柜控制熔断器规格必须符合要求。FU1、FU2、FU3严禁___操作。___
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113.TCDS由车载安全监控系统、车载无线传输装置、客列检WLAN联网设备,客车整备所、___、铁路局、铁道部TCDS设备,应用以及各级中心的联网组成。___
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114.DC600V供电客车的空气预热器。___三相电流值最大。___值与平均值的偏差___时,应在10s内切断空气预热器电源进行保护。___
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115.25T型客车污物箱液位指示灯“100%位”亮时,在列车运行途中适当的位置,操作应急排放开关,排放污水。排放时间不得超过___分钟。___
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116.DC600V供电列车单车漏电电流不得大于___mA。___
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117.DC600V供电列车单车在只有客室电热负载时,其漏电电流不得大于___mA。___
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118.铁路客车供电方式有单独供电、___、集中供电。___
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119.目前广泛采用的直流稳压电路有两种基本形式,一是并联型稳压管稳压电路,一是___型晶体管稳压电路。___
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120.单车子车的配线绝缘电阻值应大于___。___
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121.单车母车的配线绝缘电阻值应大于___。___
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122.逆变器是将直流电变换成___的装置。 ___
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123。___Y-2。___型逆变器插座有___个接线端。___
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124.J5型发电机由___部分和转动部分组成。___
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125.蓄电池按电极和电解液的物质不同,可分为酸性蓄电池。___和___两大类。___
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126.熔断器在电路中起限制通过___电流的作用。___
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127.车电固定设备是指除车电机具以外的___装置。___
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128.普通客车配线按用途可分为_配线和播音配线两大系统。___
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129.客车电气装置由供电部分、配电、输电和连接部分及___器部分组成。___
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130.车电机具是指发电机及___装置、蓄电池、电扇和轴报器等。___
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131.接触器是用来接通或___主电路的一种控制电器。___
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132.继电器是在输入___作用下而动作的自动控制电器。___
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133.熔断器主要由___和熔断管两部分组成。___
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134.客车空调三机是指空调机组、___和发电机组。___
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135.轴温报警器是一种车载监测___温度变化,超温报警的装置。___
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136.轴报器的中修周期与客车___周期相同。___
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137.TKZW-1T型轴报器跟踪报警温度是___。___
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138.三相异步电动机常用的启动方式有___启动和降压启动等两种。___
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139.25G型客车电气设备按电压等级分为380V、220V、___V和三类。___
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140.具有安装客车发电机和蓄电池的固定设备,但暂时未安装的客车叫___。___
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【单选题】
Which command can you enter to configure OSPF to use hashing to authenticate routing updates?___
A. ip ospf aut hentication message-digest
B. neighbor 192 168.0 112 cost md5
C. ip ospf priority 1
D. ip ospf aut hentication-key
【单选题】
Which command can you enter to verify the status of Cisco lOS Resilient Configuration on a Cisco router?___
A. show secure bootset
B. secure boot-image
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A user on your network inadvertently activates a botnet program that was received as an emai attachment. Which type of mechanism does Cisco Firepower use to detect and block only the botnet attack?___
A. network-based access control rule
B. reputation-based
C. user-ba sed access control rule
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【单选题】
What does the policy map do in CoPP?___
A. defines service parameters
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【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
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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
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C.
D. ouble tagging can cause the switches to experience CAM table overload.
【单选题】
What configuration is required for multitenancy ?___
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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
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【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
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【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?___
A. 4
B. 3
C. 2
D. 5
【单选题】
Which command enables authentication at the oSPFv2 routing process level?___
A. ip ospf authentication message-digest
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D. area 0 authentication ipsec spi 500 md5 1234567890ABCDEF1234567890ABCDEF
【单选题】
Which type of firewall monitors a nd protects a specific system?___
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【单选题】
On an ASA, which maps are used to identify traffic?___
A. Route maps
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【单选题】
Which type of social engineering attack targets top executives?___
A. whaling
B. vishin
C. spear phishing ng
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【单选题】
What is the minimum Cisco lOS version that supports zone-based firewalls?___
A. 12.1T
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【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
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【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
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【多选题】
choose four___
A. DHCP snooping ——————————blocks DHCP messages
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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
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What are two advanced features of the Cisco AMp solution for endpoints ___
A. contemplation
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【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
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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
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【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
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【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