【单选题】
有机合成材料绝缘子接地侧裙边距接地体的距离正常值不小于___。
A. 50mm
B. 75mm
C. 100mm
D. 150mm
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答案
A
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高速交叉线岔的始触区在___的范围内。
A. 760~1000mm
B. 735~935mm
C. 600~1050mm
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串联电路的特点之一是___。
A. 各电阻两端电压相等
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对于新设计三跨绝缘锚段关节垂直距离500mm时,其允许误差___。
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四跨绝缘锚段关节在中心柱处,两支接触悬挂的垂直距离的允许误差为___。
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环氧树脂分段绝缘器两导流板的空气间隙不得小于___。
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钢化玻璃绝缘子接地侧裙边距接地体的距离困难值不小于___。
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瓷质悬式绝缘子接地侧裙边距接地体的距离困难值不小于___。
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把220V、40W的灯泡接在110V电路中,它的实际功率是___。
A. 5W
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【单选题】
瓷质悬式绝缘子接地侧裙边距接地体的距离正常值不小于___。
A. 50mm
B. 75mm
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单击WORD主窗口标题栏右边显示的“最小化”按钮后___。
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【单选题】
钢化玻璃绝缘子接地侧裙边距接地体的距离正常值不小于___。
A. 50mm
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【单选题】
当垂直排列,上、下方为不同相供电线时,两悬挂点间的最小距离不得小于___。
A. 1000mm
B. 2000mm
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【单选题】
当垂直排列,上方为供电线,下方为不同相回流线时,两悬挂点间的最小距离不得小于___。
A. 1000mm
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【单选题】
当水平排列,不同供电分段两附加导线悬挂点间的最小距离不得小于___。
A. 1000mm
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当供电线跨越不同回路电气化股道时,对承力索(无承力索时对接触线)的最小距离不得小于___。
A. 2000mm
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【单选题】
当供电线跨越非电气化股道时,对轨面的最小距离不得小于___。
A. 6000mm
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【单选题】
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A. 2000mm
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C. 3000mm
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当回流线跨越非电气化股道时,对轨面的最小距离不得小于___。
A. 6000mm
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【单选题】
当保护线跨越不同回路电气化股道时,对承力索(无承力索时对接触线)的最小距离不得小于___。
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当架空地线跨越非电气化股道时,对轨面的最小距离不得小于___。
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【单选题】
当架空地线跨越不同回路电气化股道时,对承力索(无承力索时对接触线)的最小距离不得小于___。
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【单选题】
当保护线跨越非电气化股道时,对轨面的最小距离不得小于___。
A. 6000mm
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当加强线跨越不同回路电气化股道时,对承力索(无承力索时对接触线)的最小距离不得小于___。
A. 2000mm
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当加强线跨越非电气化股道时,对轨面的最小距离不得小于___。
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当正馈线跨越不同回路电气化股道时,对承力索(无承力索时对接触线)的最小距离不得小于___。
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当正馈线跨越非电气化股道时,对轨面的最小距离不得小于___。
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当无风时,正馈线距离峭壁挡土墙和岩石的最小距离不得小于___。
A. 1000mm
B. 500mm
C. 300mm
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【单选题】
当无风时,加强线距离峭壁挡土墙和岩石的最小距离不得小于___。
A. 1000mm
B. 500mm
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【单选题】
当无风时,供电线距离峭壁挡土墙和岩石的最小距离不得小于___。
A. 1000mm
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当无风时,保护线距离峭壁挡土墙和岩石的最小距离不得小于___。
A. 1000mm
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【单选题】
当无风时,架空地线距离峭壁挡土墙和岩石的最小距离不得小于___。
A. 1000mm
B. 500mm
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D. 75mm
【单选题】
当无风时,回流线距离峭壁挡土墙和岩石的最小距离不得小于___。
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在非居民区处,保护线最大弛度时距地面的高度不得小于___。
A. 5m
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【单选题】
在非居民区处,供电线最大弛度时距地面的高度不得小于___。
A. 5m
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【单选题】
在非居民区处,回流线最大弛度时距地面的高度不得小于___。
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【单选题】
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A. 5m
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Within an 802. 1x-enabled network with the auth Fail feature configured, when does a switch port get placed into a restricted VLAN?___
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
Refer to the exhibit which are repre sents the data center?___
A. A
B. B
C. C
D. D
【单选题】
While trouble shooting site-to-site VPN, you issued the show crypto isakmp sa command. What does the given output show?___
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【单选题】
Refer to the exhibit All ports on switch 1 have a primary vLan of 300 Which devices can host 1 reach?___
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【单选题】
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【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?___
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【单选题】
what improvement does EAP-FASTv2 provide over EAP-FAST? ___
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【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
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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
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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
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【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
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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
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【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
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【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
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C. contextual analysis
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【单选题】
Which type of social-engineering attack uses normal tele phone service as the attack vector?___
A. smishing
B. dialing
C. phishing
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【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 ?___
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【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
【多选题】
Which two features are commonly used CoPP and CPPr to protect the control plane? ___
A. QoS
B. traffic classification
C. access lists
D. policy maps
E. class maps
F. Cisco Express Forwarding
【多选题】
Which four tunne ling prot ocols are enabled in the Dfit GrpPolicy group policy ?___
A. Clientless SSL VPN
B. SSL VPN Client
C. PPTP
D. L2TP/IPsec
E. IPsec IKEv1
F. IPsec IKEv2