相关试题
【判断题】
塔片就位时应先低侧后高侧，主材与侧面大斜材未全部连接牢固前，不得在吊件上作业
【判断题】
倒落式人字抱杆整体组立杆塔时，杆塔起吊前，现场指挥人应检查现场布置情况。各岗位作业人员应检查各自操作项目的布置情况
【判断题】
倒落式人字抱杆整体组立杆塔时，人字抱杆的根部应保持在同一垂直面上，并用钢丝绳连接牢固
【判断题】
倒落式人字抱杆整体组立杆塔时，抱杆受力后发生不均匀沉陷时，应及时进行调整
【判断题】
倒落式人字抱杆整体组立杆塔时，起立抱杆用的制动绳锚在杆塔身上时，应在杆塔刚离地面后及时拆除
【判断题】
倒落式人字抱杆整体组立杆塔时，杆塔两侧及后方应设置临时拉线，并依据指挥人指令及时调整
【判断题】
倒落式人字抱杆整体组立杆塔时，П形电杆起立前应挖马道。两杆马道的深度和坡度应一致
【判断题】
附着式外拉线抱杆分解组塔，升降抱杆过程中，四侧临时拉线应由拉线控制人员根据指挥人命令适时调整
【判断题】
承托绳应绑扎在主材节点的上方。承托绳与主材连接处宜设置专门夹具，夹具的握着力应满足承托绳的承载能力。承托绳与抱杆轴线间夹角不应小于45°
【判断题】
内悬浮内（外）拉线抱杆分解组塔，构件起吊过程中抱杆腰环不得受力
【判断题】
座地摇（平）臂抱杆分解组塔时，提升（顶升）抱杆时，不得少于一道腰环，腰环固定钢丝绳应呈水平并收紧，同时应设专人指挥
【判断题】
座地摇臂抱杆分解组塔，摇臂的中部位置或非吊挂滑车位置不得悬挂起吊滑车或其他临时拉线
【判断题】
座地摇（平）臂抱杆分解组塔，抱杆采取单侧摇臂起吊构件时，对侧摇臂及起吊滑车组应收紧作为平衡拉线
【判断题】
无拉线摇臂抱杆不宜双侧同时起吊构件。若双侧起吊构件应设置抱杆临时拉线
【判断题】
吊装铁塔前，应对已组塔段（片）进行全面检查
【判断题】
直升机组塔飞行应根据外载荷种类和所挂货物重量重新计算直升机重心，应确保重心不能超限
【判断题】
不得随意整体拉倒杆塔或在塔上有导、地线的情况下整体拆除
【判断题】
拉线塔拆除时应先将原永久拉线更换为临时拉线再进行拆除作业
【判断题】
跨越架架体的强度，应能在发生断线或跑线时承受冲击荷载
【判断题】
跨越架的中心应在线路中心线上，宽度应考虑施工期间牵引绳或导地线风偏后超出新建线路两边线各2.0m，且架顶两侧应设外伸羊角
【判断题】
各类型金属格构式跨越架架顶应设置挂胶滚筒或挂胶滚动横梁
【判断题】
跨越架上应悬挂醒目的警告标志及夜间警示装置
【判断题】
强风、暴雨过后应对跨越架进行检查，确认合格后方可使用
【判断题】
悬索跨越架的承载索应用纤维编织绳，其综合安全系数在事故状态下应不小于6
【判断题】
悬索跨越架可能接触带电体的绳索，使用前均应经绝缘测试并合格
【判断题】
木质跨越架所使用的杉木杆，出现木质腐朽、损伤严重或弯曲过大等情况的不得使用
【判断题】
木、竹跨越架的立杆、大横杆、小横杆相交时，应先绑2根，再绑第3根，也可以一扣绑3根
【判断题】
木、竹跨越架立杆均应垂直埋入坑内，杆坑底部应夯实，埋深不得少于0.1m
【判断题】
钢管跨越架所使用的钢管，如有弯曲严重、磕瘪变形、表面有严重腐蚀、裂纹或脱焊等情况的不得使用
【判断题】
钢管跨越架立杆底部应设置金属底座或垫木，并设置扫地杆
【判断题】
拆除跨越架时应上下同时拆架或将跨越架整体推倒
【判断题】
人力及机械牵引放线，放线时的通信应畅通、清晰、指令统一，不得在无通信联络的情况下放线
【判断题】
人力及机械牵引放线，被跨越的低压线路或弱电线路需要开断时，开断低压线路应遵守停电作业的有关规定
【判断题】
线盘架应稳固，转动灵活，制动可靠。必要时打上临时拉线固定
【判断题】
穿越滑车的引绳应根据导、地线的规格选用。引绳与线头的连接应牢固。穿越时，作业人员不得站在导线、地线的垂直下方
【判断题】
人力及机械牵引放线时，线盘或线圈展放处，应由监理人员传递信号
【判断题】
架线时，除应在杆塔处设监护人外，对被跨越的房屋、路口、河塘、裸露岩石及跨越架和人畜较多处均应派专人监护
【判断题】
导线、地线（光缆）被障碍物卡住时，作业人员应站在线弯的里侧直接处理
【判断题】
机械牵引放线时导引绳或牵引绳的连接应用专用连接工具
推荐试题
【多选题】
Which two are characteristics of RADIUS？___
A. Uses UDP ports 1812 /1813
B. Uses TCP port 49
C. Uses UDP port 49
D.
E. ncrypts only the password between user and server
【多选题】
When setting up a site-to-site VPN with PSK authentication on a Cisco router， which two elements must be configured under crypto map？___
A. pfs
B. nat
C. reverse route
D. peer
E. transform-set
【多选题】
When using the Adaptive Security Device Manager（ASDM), which two options are available to add a new root certificate？___
A. Install from SFTP server
B. Usehttps
C. Install from a file
D. Use LDAP
E. Use SCEP
【多选题】
Which two SNMPv3 services support its capabilities as a secure networ k manage protocol？ ___
A. access control
B. the shared secret key
C. authentication
D. authorization
E. accounting
【多选题】
Which two statements about routed firewall mode are true ？___
A. The firewall acts as a routed hop in the network
B. This mode conceals the presence of the firewall
C. The firewall requires a unique iP address for each interface
D. This mode allows the firewall to be added to an existing networ k with minimal additional configuration By default， this mode permits most traffic to pass throug
【多选题】
Which two statements describe DHCP spoofing attacks？___
A. They are used to perform man-in- the-middle attacks
B. They can access most network devices
C. They can modify the flow of traffic in transit. LNGKAIG
D. They protect the identity of ti attacker by masking the DHCP address
E. They can physically modify the network gateway
【多选题】
Which two types of VLANs using PVLANs are valid？___
A. isolated
B. promiscuous
C. backup
D. secondary
E. community
【多选题】
What are two limitations of the self-zone policies on a zone-based firewall？___
A. They are unable to block Https traffic
B. They restrict SNMP traffic.
C. They are unable to support Https traffic
D. They are unable to implement application inspection
E. They are unable to perform rate limiting
【多选题】
Which two descriptions of TACACS+ are true？ ___
A. The TACACS+ header is unencrypted
B. It combines a uthentication and authorization
C. It uses TCP as its transport protocol
D. Only the password is encrypted.
E. It uses UDP as its transport protocol.
【多选题】
Which two actions does an IPS perform？ ___
A. it spans the traffic
B. it reflects the traffic back to the sender
C. it encrypts the traffic
D. it terminates the user session or connection of the attacker
E. it reconfigures a device to block the traffic
【多选题】
In which form of fraud does an attacker try to learn information such as login credenti account information by ma squerading as a reputable entity or person in email， IM or communication channels ?___
A. phishing
B. Smurfit
C. Hacking
D. Identity Spoofing
【多选题】
Which two ESA services are available for incoming and outgoing mails ？___
A. anti-DoS
B. reputation filter
C. antispam
D. content filter
E. DLP
【多选题】
What are two reasons to recommend SNMPv 3 over SNMPv2？___
A. SNMPv3 is secure because you can configure authe ntication and privacy
B. SNMPv3 is insecure because it send in formation in clear text
C. SNMPv2 is insecure because it send information in clear text
D. SNMPv3 is a Cisco proprietary protocol
E. SNMPv2 is secure because you can configure authentication and privacy
【多选题】
Which two actions can a zone- based firewall apply to a packet as it transits a zone pair？___
A. drop
B. inspect
C. queue
D. quarantine
【单选题】
Which security principle has been violated if data is altered in an unauthorized manner？___
A. accountability
B. confidentiality
C. availability
D. integrity
【单选题】
Which IKE Phase 1 parameter can you use to require the site-to-site VPN to use a pre-shared ？___
A. encryption
B. authentication
C. group
【单选题】
Which command successfully creates an administrative user with a password of "cisco"on a Cisco router?___
A. username Operator privilege 7 password cisco
B. username Operator privilege 1 password cisco
C. username Operator privilege 15 password cisco
D. username Operator password cisco privilege 15
【单选题】
Which EAP method authenticates a client against Active Directory without the use of client-side 802.1X certificates？___
A. EAP-TLS
B. EAP-MSCHAPv2
C. EAP-PEAP
D.
E. AP-GTC
【单选题】
What is a limitation of network-based IPS？___
A. It must be in dividually configured to support every operating system on the network.
B. It is most effective at the in dividual host level
C. It is unable to monitor attacks across the entire netw ork
D. Large installations require numerous sensors to fully protect the network
【单选题】
When would you configure the ip dhcp snooping trust command on a sw itch？___
A. when the switch is connected to a DHCP server
B. when the switch is working in an edge capacit
C. when the switch is connected to a client system
D. when the switch is serving as an aggregator
【单选题】
How does the 802. 1x supplicant communicate with the authentication server？___
A. The supplicant creates EAP packets and sends them to the authenticator, which encapsulates them into RADIUS and forwards them to the authentication server.
B. The supplicant creates RADIUS packets and sends them to the authe nticator, which encapsulates the m into EAP and forwards them to the a uthentication server.
C. The supplicant creates RADIUS packets and sends them to the authenticator, which translates them into eap and forwards them to the a ut hentication server
D. The supplicant creates
E. AP packets and sends them to the authe nticator, which translates them into radius and forwards them to the authentication server.
【单选题】
Which command do you enter to verify the phase I status of a VPN connection？___
A. sh crypto se ssion
B. debug crypto isakmp
C. sh crypto isakmp sa
D. sh crypto ipsec sa
【单选题】
Refer to the exhibit. what is the e ffect of the given configuration？___
A. It enables authentication，
B. It prevents keychain authentication.
C. The two routers receive normal updates from one another.
D. The two device s are able to pass the message digest to one another.
【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
C. show binary file
D. ure boot-config
【单选题】
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
D. botnet traffic filter
【单选题】
What does the policy map do in CoPP？___
A. defines service parameters
B. defines packet selection parameters
C. defines the packet filter
D. define s the action to be performed
【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
