【单选题】
【单选】 设备的断路器 ,隔离开关都在合闸位置 ,说明设备处在 ___状态。 A
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【单选题】
【单选】 在全部停电和部分停电的电气设备上工作时 ,必须完成的技术措施有 :停电、 ___、挂接地线、装设遮栏和悬挂标示牌。 B
【单选题】
【单选】 倒闸操作前 ,应先在 ___进行模拟操作。 B
A. 实际设备上
B. 模拟图板上
C. 操作票上
【单选题】
【单选】 在高压室内的二次接线和照明回路工作 ,需将高压设备停电或做安全措施时应使用___。A
A. 第一种工作票
B. 第二种工作票
C. 口头指令
【单选题】
【单选】 填写工作票时要字体规范 ,字迹清楚 ,不得涂改和不得用 ___笔填写。 C
【单选题】
【单选】 变配电所运行管理实行 ___制度。 C
A. “两票两制度”
B. “三票两制度”
C. “两票三制度”
【单选题】
【单选】 电气工作开始前 ,必须完成 ___A
A. 工作许可手续
B. 交接班手续
C. 工作间断手续
【单选题】
【单选】 装设临时接地线的顺序是 ___。A
A. 先接接地端 ,后接设备导体部分
B. 先接设备导体部分 ,后接接地端
C. 同时接接地端和设备导体部分
【单选题】
【单选】 如果线路上有人工作时 ,应在线路断路器和隔离开关的操作手把上悬挂 :___。A
A. 禁止合闸 ,线路有人工作
B. 止步,高压危险
C. 禁止攀登 ,高压危险
【单选题】
【单选】 电气设备由事故转为检修时 ,应 ___。A
A. 填写工作票
B. 直接检修
C. 汇报领导后进行检修
【单选题】
【单选】 操作票填写中 ,合上或拉开的隔离开关 ,刀开关统称为 ___。C
【单选题】
【单选】 在全部停电和部分停电的电气设备上工作时 ,必须完成的技术措施有 :___、验电、挂接地线、装设遮栏和悬挂标示牌。 C
【单选题】
【单选】 在全部停电和部分停电的电气设备上工作 ,必须完成的技术措施有 ___ 。A
A. 停电;验电 ;挂接地线 ;装设遮栏和悬挂标示牌
B. 停电;放电; 挂接地线 ;装设遮栏和悬挂标示牌
C. 停电;验电; 放电;装设遮栏和悬挂标示牌
【单选题】
【单选】 工作票应由 ___ 签发。 B
A. 工作负责人
B. 工作票签发人
C. 工作许可人
【单选题】
【单选】 电气设备有三种工作状态 ,即运行、备用、 ___。C
【单选题】
【单选】 在室内高压设备上工作 ,应在工作地点两旁间隔的遮栏上悬挂 :___。B
A. 禁止合闸 ,线路有人工作
B. 止步,高压危险
C. 禁止攀登 ,高压危险
【单选题】
【单选】 电源是将其他能量转换为 ___的装置。 C
【单选题】
【单选】 在电阻串联的电路中 ,电路的总电阻等于 ___ 。B
A. 各串联电阻之和的倒数
B. 各串联电阻之和
C. 各串联电阻的平均值
【单选题】
【单选】 两个电阻串联接入电路 ,当两个电阻阻值不相等时 ,则___。A
A. 两电阻的电流相等
B. 电阻小的电流小
C. 电阻大的电流大
【单选题】
【单选】 对变配电所内的电气设备、备用设备及继电保护自动装置等需定期进行 ___ 和轮换。B
【单选题】
【单选】 磁场中某点的磁感应强度 B 与磁导率？的比值 ,称为该点的 ___。 B
【单选题】
【单选】 在中性点经消弧线圈接地系统中 ,如果消弧线圈选择得当 ,可使接地点电流小于 ___,而不会产生断续电弧和过电压现象。 C
【单选题】
【单选】 为防止直接雷击高大建筑物 ,一般多采用 ___ 。A
【单选题】
【单选】 外部过电压通常指 ___过电压。 C
【单选题】
【单选】 如果在交接班过程中 ,有事故要处理 ,仍由 ___ 负责处理 ,必要时可请接班人员协助工作。 A
【单选题】
【单选】 镍是一种 ___磁性物质。 C
【单选题】
【单选】 在纯电容交流电路中 ,电路的无功功率 ___ 。B
A. 小于电路电压与电流的有效值的乘积
B. 等于电路电压与电流的有效值的乘积
C. 大于电路电压与电流的有效值的乘积
【单选题】
【单选】 表征磁介质导磁性能的物理量 ,叫做 ___。A
【单选题】
【单选】 在三个电阻并联的电路中 ,已知三条并联支路的电流分别为 4A 、8A 和 15A, 则电路的电流等于 ___ C
【单选题】
【单选】 发生短路时 ,电力系统从正常的稳定状态过渡到短路的稳定状态 ,一般需 ___ 秒。 C
【单选题】
【单选】 当导体材料及长度确定之后 ,如果导体截面越小 ,则导体的电阻值 ___。B
【单选题】
已知电路的端电压为 12V,电流为 2A, 则该电路电阻为 ___Ω 。B
【单选题】
【单选】 一张倒闸操作票最多只能填写 ___ 操作任务。 A
【单选题】
【单选】 使用验电器验电前 ,除检查其外观、电压等级、试验合格期外 ,还应 ___ 。C
A. 自测发光
B. 自测音响
C. 在带电的设备上测试其好坏
【单选题】
【单选】 TN 系统电源系统有一点 (通常是中性点 )接地,而设备的外露可导电部分 (如金属外壳) 通过 ___ 连接到此接地点的低压配电系统 ,C
【单选题】
【单选】 仪用互感器分 ___两种。 B
A. 电力变压器和电流互感器
B. 电流互感器和电压互感器
C. 特种互感器和电流互感器
【单选题】
【单选】 在电阻串联的电路中 ,电路的端电压 U 等于 ___。 B
A. 各串联电阻的端电压
B. 各串联电阻端电压的总和
C. 各串联电阻端电压的最大值
【单选题】
【单选】 铁磁性物质的相对导磁率 ___。A
A. 远大于 1
B. 略大于 1
C. 等于 1
【单选题】
【单选】 发生短路时 ,电路中的电流值比正常时的电流值 ___。 A
【单选题】
【单选】 外部过电压 ,与气象条件有关 ,又称为 ___。B
A. 气象过电压
B. 大气过电压
C. 污秽过电压
【单选题】
【单选】 KYN28-10 型高压开关柜采用电缆出线时 ,如需要装设零序电流互感器 ,零序电流互感器一般装设在 ___。C
A. 主母线室
B. 吊装在电缆室内
C. 吊装在电缆室柜底板外部
推荐试题
【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
【单选题】
Which command do you enter to verify the status and settings of an iKE Phase 1 tunnel？___
A. show crypto ipsec as output
B. show crypto isakmp
C. show crypto isakmp policy
D. show crypto ipsec transform
【单选题】
Which feature can help a router or switch maintain packet forwarding and protocol states despite an attack or heavy traffic load on the router or switch？___
A. service Policy
B. Control Plane Policing
C. Policy Map
D. Cisco
E. xpress
F. orwarding
【单选题】
Which STP feature can prevent an attacker from becoming the root bridge by immediately shutting down the interface when it receives a BPDU？___
A. root guard
B. Port Fast
C. BPDU guard
D. BPDU filtering
【单选题】
Which technology can best protect data at rest on a user system？___
A. full-disk encryption
B. IPsec tunnel
C. router ACL
D. network IPS
【多选题】
Which two primary security concerns can you mitigate with a BYOD solution ？___
A. schedule for patching the device
B. securing access to a trusted corporate network
C. compliance with applicable policies
D. connections to public Wi-Fi networks
E. device tagging and invento
【多选题】
choose five___
A. MD5————————inserure
B. DES————————insercure
C. SDES———————legacy
D. SHA-1———————legacy
E. HMAC-MD5—————legacy
【多选题】
Which two characteristics of symmetric encryption are true？___
A. It uses digital certificates
B. It requires more resources than asymmetric ancryption
C. It uses the same key to enctypt and decrupt traffic
D. It uses a public key and a pricate key to encrypt and decrypt traffic.
E. It is faster than asymmetric encryption
【多选题】
which two characteristics of PVLAN are true？___
A. Promiscuous porta can communicate with PVLAN ports.
B. Isolated ports cannot communicate with other ports on the same VLAN
C. Community ports have to be a part of the trunk.
D. They require VTP to be enabled in server mode
E. PVLAN ports can be configured as Ether Channel ports
【多选题】
What are two options for running Cisco SDM?___
A. Running SDM from a mobile device
B. Running SDM from within CiscoWorks
C. Running SDM from a router's flash
D. Running SDM from the Cisco web porta
E. Running SDM from a PC
【多选题】
Which two options are the primary deployment modeles for mobile device management？___
A. multisite
B. cloud-based
C. on premises
D. hybrid cloud basedo
E. single site
【多选题】
Drag the recommendation on the left to the Cryptographic algorithms on the right， Options will be used more than once.___
A. Avoid——————————————DES，MD5
B. Legacy——————————————SDES，SHA1，HMAC-MD5
【多选题】
Which two are valid types of vLans using PVLANS ?___
A. Community VLAN
B. Backup VLAN
C. Secondary VLAN
D. Isolated VLAN
E. Isolated VLAN
【多选题】
Which two commands are used to implement Resilient lOS Configuration ___
A. Secure boot-config
B. copy running-config tftp
C. copy flash:ios bin tftp
D. copy running-config startup-config
E. secure boot-image
【多选题】
Which two types of firewalls work at layer 4 and above ？___
A. Stateful inspection
B. Network Address Translation
C. Circuit-Level gateway
D. Static packet filter
E. Application Level firewall
【多选题】
Which two default settings for port security are true ？___
A. Violation is Protect
B. Violation is Restrict
C. Violation is Shutdown
D. Maximum number of MAC addresses is 2
E. Maximum number of MAC addresses is 1
