【单选题】
年平均雷暴日数大于（）天，以及有雷击历史的地段光（电）缆线路应采取防雷保护措施。___
A. 10
B. 15
C. 20
D. 30
E.
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相关试题
【单选题】
架空电缆线路不宜与电力线路合杆架设。在不可避免时，要采取技术防护措施和与相关部门签订协议，与10KV电力线合杆时，电力线与通信电缆间净距不应小于（）m，且通信电缆应架设在电力线路的下部。___
A. 1
B. 1.5
C. 2
D. 2.5
E.
【单选题】
直列式成端电缆不应超过( )条。___
【单选题】
通信管道工程宜使用天然中砂，平均粒径为（）mm___
A. 0.2-0.4
B. 0.35 -0.5
C. 0.4-0.5
D. 0.5-0.8
E.
【单选题】
通信管道工程宜使用自来水或洁净的（）___
A. 天然水
B. 纯净水
C. 矿泉水
D. 河水
E.
【单选题】
通信管道工程所用塑料管材有聚氯乙烯(PVC一U)管和高密度聚乙烯(HDPE)管。其塑料管的型号及尺寸应符合（）要求。___
A. 建设单位
B. 监理单位
C. 设计规范
D. 设计单位
E.
【单选题】
井盖的外缘与口圈的内缘间隙不应大于（）mm;井盖与口圈盖合后，井盖边缘应高于口圈1-3mm。___
【单选题】
___
A. 117. 68
B. 107.68
C. 127.68
D. 217.68
E.
【单选题】
积水罐用铸铁加工，要求用（）防腐处理___
A. 防锈漆
B. 热涂沥青
C. 镀锌
D. 浓硫酸
E.
【单选题】
___
A. 士5
B. 士lO
C. 士l5
D. 士20
E.
【单选题】
平面复测允许偏差应符合下列规定:直通型人(手)孔的中心位置不得大于（）mm。___
A. 20
B. 50
C. 1OO
D. 120
E.
【单选题】
挖掘不需支撑护土板的人(手)孔坑，其坑的平面形状应与人(手)孔形状相同，坑的侧壁与人(手)孔外壁的外侧间距不应小于（）m。___
A. 0.2
B. 0.3
C. 0.4
D. 0.5
E.
【单选题】
通信管道工程施工现场堆土，应符合下列要求:城镇内的堆土高度不宜超过（）m___
A. 1
B. 1.2
C. 1.5
D. 1.6
E.
【单选题】
人(手)孔坑的回填土，应符合下列要求:靠近人(手)孔壁四周的回填土内，不应有直径大于（）mm的砾石，碎砖等坚硬物。___
A. 50
B. 100
C. 150
D. 200
E.
【单选题】
混凝土的搅拌必须均匀，以混凝土颜色一致为度。搅拌均匀的混凝土应在初凝期内()浇筑完毕。___
A. 约24min
B. 约45min
C. 约60min
D. 约90min
E.
【单选题】
人(手)孔、通道基础的外形、尺寸应符合设计图纸规定，其外形偏差应不大于()mm，厚度偏差应不大于士lOmm。___
A. 士10
B. 士20
C. 士25
D. 士30
E.
【单选题】
浇灌混凝土前，应清理模板内的杂草等物，并按设计规定的位置挖好积水罐安装坑，其大小应比积水罐外形四周大100mm，坑深比积水罐高度100mm;基础表面应从四周向积水罐做（）mm泛水___
A. 10
B. 20
C. 25
D. 30
E.
【单选题】
墙体与基础应结合严密、不漏水，结合部的内外侧应用（）水泥砂浆抹八字，基础进行抹面处理的可不抹内侧八字角___
A. 1:2.5
B. 1:25
C. 2:2.5
D. 2:25
E.
【单选题】
拉力(拉缆)环的安装位置应符合设计规定，一般情况下应与对面管道底保持（）mm以上的间距。___
A. 100
B. 200
C. 400
D. 400
E.
【单选题】
通信管道的防水、防蚀、防强电干扰等防护措施，必须按（）处理。___
A. 设计要求
B. 设计文件
C. 建设单位要求
D. 监理单位要求
E.
【单选题】
人(手)孔内不同方向管道相对位置(标高)尽可能接近，相对管孔高程不应大于（）mm___
A. 200
B. 300
C. 400
D. 500
E.
【单选题】
凡是天然地基的管道沟挖成后必须夯实抄平，地基表面高程应符合设计规定，允许偏差不应大于（）mm___
A. ±5
B. ±10
C. ±15
D. ±20
E.
【单选题】
通信管道基础进人建筑物或人(手)孔时，塑料管道靠近建筑物或人〔手)孔处应做不小于()m长度的钢筋混凝土基础和混凝土包封。___
A. 1
B. 1.5
C. 2
D. 2.5
E.
【单选题】
水泥管块接缝无论行间、层间均宜错开（ ）管长___
A. 1/4
B. 1/3
C. 1/2
D. 1/5
E.
【单选题】
___
A. 100-200
B. 200-400
C. 300-400
D. 300-500
E.
【单选题】
通信塑料管道的段长应按相邻两个人孔的中心点间距而定。直线管道的段长不应大于200m，高等级公路上的直线管道段长不应大于250m;弯曲管道的段长不应大于（）m。___
A. 80
B. 100
C. 120
D. 150
E.
【单选题】
管道进人人(手)孔时，管口不应凸出人(手)孔内壁，应终止在距墙体内侧（）mm处，并应严密封堵，管口做成喇叭口。___
A. 40
B. 50
C. 80
D. 100
E.
【单选题】
对竣工文件的验收:施工单位应在工程终验前，将工程竣工文件一式（）提交建设单位或监理单位。___
A. 三份
B. 四份
C. 五份
D. 六份
E.
【单选题】
___
A. 平行
B. 垂直
C. 对角线
D. 任意
E.
【单选题】
各段管道（）试通合格，管道工程才能称为合格。不合格的部分应在工程验收前找出原因，并得到妥善的解决。___
A. 0.85
B. 0.9
C. 0.95
D. 全部
E.
【单选题】
检查已签证的隐蔽工程验收项目，如发现异常，应进行（）。___
A. 立即整改
B. 考核监理
C. 抽检复验
D. 破坏性检查
E.
【单选题】
钢管接续宜采用套管焊接，并应符合下列规定:使用有缝管时，应将管缝置于（）。___
A. 下方
B. 上方
C. 侧面
D. 以上都对
E.
【单选题】
栅格管、波纹管、硅芯管组成管群应间隔（）m左右用勒绑扎一次，蜂窝管或梅花管宜用支架分层排列整齐。___
【单选题】
通信管道工程建设中应积极采用新工艺、新技术，以提高（），降低工程造价。___
A. 施工进度
B. 施工质量
C. 施工水平
D. 施工效率
E.
【单选题】
通信管道工程所用的器材规格、程式及质量，应满足要求，并由施工单位会同建设单位或（）单位在使用之前组织进场检验。___
A. 设计
B. 材料厂家
C. 监理
D. 市政
E.
【单选题】
水泥从出厂到使用的时间超过（）个月或有变质迹象的，使用前均应进行实验签定，依据签定情况确定情况使用与否或另行更换。___
【单选题】
水泥的初凝时间不得早于（）分钟。___
A. 30
B. 45
C. 60
D. 75
E.
【单选题】
水泥的晚凝时间不得晚于（）小时。___
【单选题】
水泥预制品生产前,必须按水泥类别、标号及混凝土标号，做至少一组混凝土试块，具体组数由（）单位根据需要确定。___
A. 建设
B. 设计
C. 生产
D. 监理
E.
【单选题】
石料中含泥量,按重量计不得超过（）。___
A. 0.02
B. 0.03
C. 0.04
D. 0.05
E.
【单选题】
通信管道工程人（手）孔及通道，砖应采用（）。___
A. 石粉砖
B. 一等机制普通烧结砖
C. 炉渣砖
D. 矽酸盐砖
E.
推荐试题
【单选题】
Refer to the exhibit line in this configuration prevents the help Desk user from modifying the interface configuration.___
A. Privilege exec level 10 interface
B. Privilege exec level 9 configure terminal
C. Privilege exec level 7 show start-up
D. Username HelpDesk privilege 6 password help
【单选题】
You have been tasked with blocking user access to websites that violate company policy， but the sites use dynamic IP addresses. What is the best practice for URl filtering to solve the problem？___
A. Enable URL filtering and use URL categorization to block the we bsites that violate company
B. Enable URL filtering and create a blacklist to block the websites that violate company policy
C. Enable URL filtering and create a whitelist to block the websites that violate company policy
D.
E. nable URL filtering and use URL categorization to allow only the websites that company policy allows users to access.
【单选题】
Within an 802. 1x-enabled network with the auth Fail feature configured， when does a switch port get placed into a restricted VLAN？___
A. When a conected client fails to authenticate after a certain number of attempts.
B. if a connected client does not support 802. 1x
C. when AAA new-model is ena bled
D. after a connected client exceeds a specified idle time
E. when 802. 1x is not globally enabled on the Cisco Catalyst switch
【单选题】
Which type of attack does a proxy firewall protect against ？___
A. cross-site scripting attack
B. worm traffic
C. port scanning
D. DDoS attacks
【单选题】
When an administrator initiates a device wipe command from the ISE， what is the immediate effect？___
A. It requests the administrator to choose between erasing all device data or only managed corporate data.
B. It requests the administrator to enter the device pin or password before proceeding with the operation
C. It notifies the device user and proceeds with the erase operation
D. It immediately erases all data on the device
【单选题】
What is a valid implicit permit rule for traffic that is traversing the ASa firewall？___
A. ARPs in both directions are permitted in transparent mode only
B. Unicast IPv4 traffic from a higher security interface to a lower security interface is permittee in routed mode only.
C. Unicast IPv6 traffic from a higher security interface to a lower security interface is permitted in transparent mode only.
D. Only BPDUs from a higher security interface to a lower secur ity interface are permitted in transparent mode.
E. Only BPDUs from a higher security interface to a lower secur ity interface are permitted in routed mode
【单选题】
A specific URL has been identified as containing malware. What action can you take to block users from accidentally visiting the URl and becoming infected with malware ？___
A. Enable URL filtering on the perimeter router and add the URls you want to block to the router's local URL list
B. Enable URL filtering on the perimeter firewall and add the URls you want to allow to the router's local URL list.
C. Enable URL filtering on the perimeter router and add the URls you want to allow to the firewall's local URL list
D. Create a blacklist that contains the URl you want to block and activate the blacklist on the perimeter rout
E. Create a whitelist that contains the URLs you want to allow and activate the whitelist on the perimeter router.
【单选题】
How does PEAP protect the EAP exchange ？___
A. It encrypts the exchange using the server certificate
B. It encrypts the exchange using the client certificate
C. It validates the server-supplied certificate,and then encrypts the exchange using the client certificate
D. It validates the client-supplied certificate,and then encrypts the excha nge using the server certificate
【单选题】
Which feature of the Cisco Email Security Appliance can mitigate the impact of snowshoe spam and sophisticated phishing attacks？___
A. contextual analysis
B. holistic understanding of threats
C. graymail management and filtering
D. signature-based IPS
【单选题】
Refer to the exhibit【nat (inside,outside)dunamic interface】 Which translation technique does this configuration result in？___
A. DynamIc PAT
B. Dynamic NAT
C. Twice NAT
D. Static NAT
【单选题】
Refer to the exhibit which are repre sents the data center？___
【单选题】
While trouble shooting site-to-site VPN， you issued the show crypto isakmp sa command. What does the given output show？___
A. IKE Phase 1 main mode was created on 10.1.1.5， but it failed to negotiate with 10.10 10.2
B. IKE Phase 1 main mode has successfully negotiated between 10.1.1.5 and 10.10..
C. IKE Phase 1 aggressive mode was created on 10.1.1.5， but it failed to negotiate with
【单选题】
Refer to the exhibit All ports on switch 1 have a primary vLan of 300 Which devices can host 1 reach？___
A. host 2
B. server
C. host 4
D. other devices within VLAN303
【单选题】
Which option is the cloud-based security service from Cisco the provides URL filtering， web browsing content security， and roaming user protection？___
A. Cloud Web service
B. Cloud Advanced Malware Protection
C. Cloud We b Security
D. Cloud Web Protection
【单选题】
How can you detect a false negative on an IPS？___
A. View the alert on the ips
B. Review the ips log
C. Review the is console
D. Use a third- party system to perform penetration testing.
E. Use a third- party to audit the next generation firewall rules
【单选题】
If a switch port goes directly into a blocked state only when a superior BPDU is received， what mechanism must be in use？___
A. STP BPDU guard
B. Loop guard
C. EtherChannel guard
D. STP Root guard
【单选题】
what improvement does EAP-FASTv2 provide over EAP-FAST？ ___
A. It allows multiple credentials to be passed in a single EAP exchange.
B. It supports more secure encryption protocols
C. It allows faster authentication by using fewer packets.
D. It addresses security vulnerabilities found in the original protocol
【单选题】
When users login to the Client less Ssl Vpn using https://209.165.201.2/test ,which group policy will be applied？___
A. test
B. clientless
C. sales
D. DfitGrp Policy
E. Default RAGroup
F. Default WEB VPN
G. roup
【单选题】
Which user authentication method is used when users login to the Clientless SSLVPN portal using https://209.165.201.2/test？___
A. AAA with LOCAL database
B. AAA with RADIUS server
C. Certificate
D. :Both Certificate and aaa with LoCAL database
E. Both Certificate and AAA with RADIUS server
【单选题】
What' s the technology that you can use to prevent non malicious program to runin the computer that is disconnected from the network？___
A. Firewall
B. Sofware Antivirus
C. Network IPS
D. Host IPS
【单选题】
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
【单选题】
Which product can be used to provide application layer protection for tcp port 25 traffic？___
A. ESA
B. CWS
C. WSA
D. ASA
【单选题】
which iPS mode is less secure than other options but allows optimal network through put ?___
A. inline mode
B. inline-bypass mode
C. transparent mode
D. Promiscuous mode
【单选题】
Which feature of the Cisco Email security Appliance can mitigate the impact of snowshoe spam and sophisticated phishing attack？___
A. reputation based filtering
B. signature based IPS
C. contextual analysis
D. graymail management and filtering
【单选题】
Which type of social-engineering attack uses normal tele phone service as the attack vector？___
A. smishing
B. dialing
C. phishing
D. vishing
【单选题】
Which quantifiable item should you consider when you organization adopts new technologies？___
A. exploits
B. vulnerability
C. threat
D. Risk
【单选题】
Referencing the ClA model， in which scenario is a hash- only function most appropriate ？___
A. securing data at rest
B. securing real-time traffic
C. securing data in files
D. securing wireless transmissions
【单选题】
Which ports must be open between a aaa server and a microsoft server to permit Active Directory authentications？___
A. 445 and 389
B. 888 and 3389
C. 636 and 4445
D. 363 and 983
【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
