相关试题
【判断题】
【判断】人体过分接近带电体 ,其间距小于放电距离时,会直接产生强烈的电弧对人放电,造成人触电伤亡。()
【判断题】
【判断】 使用绝缘棒 ,可以不用戴绝缘手套、穿绝缘靴。 ()
【判断题】
【判断】 移动式电气设备的性能与现场使用条件无关。
【判断题】
【判断】 引发电气火灾要具备的两个条件为 :有可燃物质和引燃条件。 ()
【判断题】
【判断】 人体距 10kV 带电设备的安全距离 ,应该大于等于 0.7m。()
【判断题】
【判断】 旋转电机发生火灾时 ,禁止使用干粉灭火器和干沙直接灭火。
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【判断】 我国采用的颜色标志的含义基本上与国际安全色标准相同。
【判断题】
【判断】 电气火灾断电操作时应戴绝缘手套、穿绝缘靴 ,并使用相应电压等级的绝缘工具。()
【判断题】
【判断】 工作票是准许在电气设备上工作的书面命令,是执行保证安全技术措施的书面依据,一般有三种格式。
【判断题】
【判断】 对运行中可能产生电火花、电弧和高温危险的电气设备和装置 ,不应放置在易燃的危险场所。 ()
【判断题】
【判断】 安全色标中 “黑色 ”表示强制执行。
【判断题】
【判断】 为确保安全 ,户外变电装置的围墙高度一般应不低于 3 米。
【判断题】
【判断】 接地体是埋在地下与土壤直接接触的金属导体。 ()
【判断题】
【判断】 只有在完全切断电源后才可用水灭火。 ()
【判断题】
【判断】 室内电气装置或设备发生火灾时应尽快拉掉开关切断电源 ,并及时
【判断题】
【判断】 人体触电方式有直接接触触电、间接接触触电。 ()
【判断题】
【判断】 作为一名电气工作人员 ,对发现任何人员有违反 《电业安全工作规程》 ,应立即制止。
【判断题】
【判断】 电击 ,是电流通过人体对人体内部器官的一种伤害。 ()
【判断题】
过接地装置与大地相连称为保护接地。 ()
【判断题】
【判断】 为防止人身电击 ,水不能用于带电灭火。 ()
【判断题】
【判断】 变压器运行巡视应检查储油柜和充油绝缘套管内油面的高度和封闭处有无渗漏油现象 ,以及油标管内的油色。 ()
【判断题】
【判断】 电流互感器是按电磁感应原理工作的 ,其结构与普通变压器相似。 ()
【判断题】
【判断】 当铁损和铜损相等时 , 变压器处于最经济运行状态 ,一般在其带额定容量的50%~70% 时。 ()
【判断题】
【判断】 干式变压器在结构上可分为以固体绝缘包封绕组和不包封绕组。 ()
【判断题】
【判断】 接线组别相同而并列 ,会在变压器相连的低压侧之间产生电压差 ,形成环流 ,严重时导致烧坏变压器。 ()
【判断题】
【判断】 一般情况下是在变压器高压绕组上抽出适当的分接 ,进行调压。 ()
【判断题】
【判断】变压器油本身绝缘强度比空气小,所以油箱内充满油后,可降低变压器的绝缘强度。()
【判断题】
【判断】 当变压器过负载时 ,会发出很高且沉重的嗡嗡声。 ()
【判断题】
【判断】 互感器是一种特殊的变压器。 ()
【判断题】
【判断】 电流互感器分为测量用电流互感器和保护用电流互感器。 ()
【判断题】
【判断】 变压器一、二次侧感应电势之比等于一、二次侧绕组匝数之比。 ()
【判断题】
【判断】 干式变压器是指铁芯和绕组浸渍在绝缘液体中的变压器。 ()
【判断题】
【判断】 额定电压是指变压器线电压 (有效值 ),它应与所连接的输变电线路电压相符合。()
【判断题】
【判断】 运行中的电压互感器出现瓷套管破裂、严重放电 ,可继续运行。 ()
【判断题】
【判断】 当散发的热量与产生的热量相等时 ,变压器各部件的温度达到稳定,不再升高 ()
【判断题】
体时 ,接通信号或跳闸回路 ,进行报警或跳闸 ,以保护变压器。 ()
推荐试题
【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
【多选题】
Which two statements regarding the aSA VPN configurations are correct？___
A. The asa has a certificate issued by an external certificate authority associated to the ASDM TrustPoint1
B. The Default WEBVPNGroup Connection Profile is using the aaa with RADIUS server method
C. The Inside-srvbook mark references the https://192.168.1.2url
D. Only Clientless SSL VPN access is allowed with the Sales group policy
E. Any Connect， IPSec IKEv1， and IPSec IKEv2 VPN access is enabled on the outside interface
F. The Inside -SRV bookmark has not been applied to the Sales group policy
【多选题】
Which three ESP fields can be encrypted during transmission？___
A. Security Parameter Index
B. Sequence Number
C. MAC Address
D. Padding
E. Pad length
F. Next Header
【多选题】
.Which three statements de scribe DHCP spoofing attacks？___
A. They can modify traffic in transit.
B. They are used to perform man- in-the-middle attacks
C. They use ARP poisoning
D. They can access most network devices
E. They protect the ide ntity of the attacker by masking the DHCP address.
F. They are can physically modify the network gateway.
【多选题】
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
【多选题】
In which two situations should you use in band management？ ___
A. when the control plane fails to respond
B. when you require administrator access from multiple locations
C. when you require ROMMON access.
D. where a network device fails to forward packets
E. when multiple ma nagement applications need concument access to the device.
【多选题】
Which two features are supported in a VRF-aware softwar infrastructure before VRF-lite?___
A. multicast
B. fair queuing
C. WCCP
D.
E. IGRP
【多选题】
.Which loS command do you enter to test authentication again a AAA server？___
A. dialer aaa suffix <suffix> password <password>
B. ppp authentication chap pap test
C. test aaa-server authentication dialer group user name <user> password <password>
D. aaa authentication enable default test group tacases
【多选题】
Which two statements about the self zone on a cisco Xone based policy firewall are true？___
A. Multiple interfaces can be assigned to the self zone
B. it supports stateful inspections for multicast traffic
C. zone pairs that include the self zone apply to traffic transiting the device.
D. it can be either the source zone or the destination zone
E. traffic entering the self zone must match a rule
【多选题】
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 type of firewall can server as the interme diary between a client and a server ?___
A. Stateless firewall
B. application firewall
C. proxy firewall
D. personal firewall
【单选题】
What is the highest security level that can be configured for an interface on an ASA？___
【单选题】
Which term refers to the electromagnetic interference that can radiate from network cables？___
A. Gaussian distributions
B. Doppler waves
C. emanations
D. multimode distortion
【单选题】
How does a zone pair handle traffic if the policy de fination of the zone pair is missing?___
A. It inspects all traffic.
B. It drops all traffic.
C. It permits all traffic wihtout logging
D. It permits and logs all traffic
【单选题】
default how does a zone based firewall handle traffic to add from the self zone？___
A. It permits all traffic without inspection
B. It inspects all traffic to determine how it is handled
C. It permits all traffic after inspection
D. It frops all traffic
【单选题】
Which command should beused to ena ble AAA Authentication to determine if a user can access the privilege command level？___
A. aaa authentication enable local
B. aaa authentication enable level=
C. aaa authentication enable method de fault
D. aaa authentication enable defa ult local
【单选题】
On an ASA， the policy indicates that traffic should not be translated is often referred to as which of the following？___
A. NAT zero
B. NAT forward
C. NAT nul
D. NAT allow
【单选题】
Which protocol offers data Integrity encryption， authentication， and anti-replay functions for IPSec VPN？___
A. ESP protocol
B. IKEv3 Protocol
C. AH protoco
D. IKEv1 Protocol
【单选题】
Which component offers a variety of security Solution， including firwall， IF Antivirus and antiphishing features？___
A. Cisco loS router
B. Cisco ASA 5500 Ser ies security appliance
C. Cisco ASA 5500 X series Next Gen Security appliance
D. Cisco 4200 series IPS appliance
【单选题】
Refer to the exhibit， A Network Secur ity administrator check the ASa firewall NAT policy table rith show nat command， which statement is fails？___
A. There are only reverse translation matches for the REAL SERvER object
B. First policy in the Section 1 is a dynamic nat entry defined in the object configuration
C. NAT policy in section 2 is static entry de fined in the object configuration
D. Translation in Section 3 used when a connection does not matches any entries in first two sections
【单选题】
What is true of an aSa in transparent mode ?___
A. It supports OSPF
B. It requires an IP address for each interface
C. It requires a management IP address
D. It allows the use of dynamic NaT
【单选题】
What is the effect of the ip scp server enable command？___
A. It references an access list that allows specific SCP servers
B. It allows the router to initiate requests to an SCP server
C. It allows the router to become an SCP server
D. It adds SCP to the list of allowed copy functions
【单选题】
How can you mitigate attacks in which the attacker attaches more than one vLan tag to a packet？___
A. Assign an access VLAN to every active port on the switch
B. Disable Ether Channel on the switch
C. Explicitly identity each VLAN allowed across the trunk
D.
E. nable transparent VTP on the switch
【单选题】
Which technology can you implement to centrally mitigate potential threats when users on your network download files that might be malicious？___
A. Enable file-reputation services to inspect all files that traverse the company network and block files with low reputation scores
B. Verify that the compa ny IpS blocks all known malicious website
C. Verity that antivirus software is installed and up to date for all users on your network
D. Implement URL filtering on the perimeter firewall
【单选题】
What is the most common implementation of PaT in a standard networked environment？___
A. configuring multiple external hosts to join the self zo ne and to communicate with one another
B. configuring multiple internal hosts to communicate outside of the network using the outside interface IP address
C. configuring multiple internal hosts to communicate outside of the network by using the inside interface IP address
D. configuring an any any rule to enable external hosts to communicate inside the network
【单选题】
Which component of a bYod architecture provides aAa services for endpoint access ?___
A. Integrated Services Router
B. access point
C. ASA
D. Identity Services
E. ngine
【单选题】
You are configuring a NAT rule on a Cisco ASA ,Which description of a mapped interface is true?___
A. It is mandatory for all firewall modes
B. It is optional in routed mode
C. It is optional in transparent mode
D. It is mandatory for ide ntity NAT only
【单选题】
Which description of the use of a private key is true ？___
A. The sender signs a message using the receivers private key
B. The sender signs a message using their private key
C. The sender encrypts a message using the receivers private key
D. The receiver decrypts a n15ssage using the sender's private key
【单选题】
Which mechanism does the FireAMP Connector use to avoid conflicts with other security applications such as antivirus products ?___
A. Virtualization
B. Containers
C. Sandboxing
D.
E. xclusions
【单选题】
Which network to pology de scribes multiple LANS in a gec? ___
A. SOHO
B. MAN
C. pan
D. CAN
【单选题】
Which statement represents a difference between an access list on an aSa versus an access list on a router？___
A. The asa does not support number access lists
B. The aSa does not support standard access list
C. The asa does not ever use a wildcard mask
D. The asa does not support extended access lists
