【单选题】
Which statements about the native VLAN is true ？___
A. It is susceptible to VLAN hopping attacks.
B. It is the Cisco recommended VLAN for switch-management traffic
C. It is most secure when it is a ssigned to vLAn 1.
D. It is the cisco-recomme nded vlan for user traffic
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相关试题
【单选题】
There are two versions of IKE:IKEv1 and IKEv2. Both IKEv1 and IKEv2 protocols operate in phases IKEv1 operates in two phases. IKEv2 operates in how many phases？___
【单选题】
What does the dh group refer to？___
A. length of key for hashing C
B. length of key for encryption
C. tunnel lifetime key
D. length of key for key exchange
E. length of key for authentication
【单选题】
Which path do you follow to enable aaa through the SDM ？___
A. Configure Tasks > AAA
B. Configure > Addition Authentication > AAA
C. Configure > AAA
D. Configure > Additional Tasks > AAA
E. Configure Authentication > AAA
【单选题】
which technology cloud be used on top of an MPLS VPN to add confidentiality ？___
A. IPsec
B. 3DES
C. AES
D. SSL
【单选题】
Which term is most closely aligned with the basic purpose of a SIEM solution? ___
A. Non-Repudiation
B. Accountability
C. Causality
D. Repudiation
【单选题】
You have just deployed SNMPv3 in your environment， Your manager asks you to make sure that our SNMP agents can only talk to the SNMP Manager. What would you configure on your SNMI agents to satisfy this request？___
A. A SNMP View containing the SNMP managers
B. Routing Filter with the SNMP managers in it applied outbound
C. A standard ACL containing the SNMP managers applied to the SNMP configuration
D. A SNMP Group containing the SNMP managers
【单选题】
Which feature prevents loops by moving a nontrunking port into an errdisable state when a BPDU is received on that port？___
A. BPDU filte
B. DHCP snooping
C. BPDU guard
D. Port Fast
【单选题】
Which command enables port security to use sticky MAC addresses on a switch？___
A. switchport port-security violation restrict
B. switchport port-security mac-address sticky
C. switchport port-security violation protect
D. switchport port-security
【单选题】
When you edit an IPS subsignature， what is the effect on the parent signature and the family of subsignatures？___
A. The change applies to the parent signature and the entire family of subsignatures
B. The change applies to the parent signature and the subsignature that you edit
C. The change applies only to subsignatures that are numbered sequentially after the subsignature that you edit
D. Other signatures are unaffected， the change applies only to the subsignature that you dit
【单选题】
Which type of mechanism does Cisco FirePOWER de ploy to protect ag detected moving across other networks？___
A. antivirus scanning
B. policy-based
C. reputation-based
D. signature-based
【单选题】
What action must you take on the ise to blacklist a wired device？___
A. Locate the switch through which the device is connected and push an a cl restricting all access by the device
B. Issue a CoA request for the de vice's mac address to each access switch in the network
C. Revoke the device's certificate so it is unable to authenticate to the network
D. Add the device's MAc address to a list of black listed devices
【单选题】
Which type of firewall can perform deep packet inspection？___
A. packet-filtering firewall
B. stateless firewall
C. application firewall
D. personal firewall
【单选题】
What is the main purpose of Control Plane Policing？___
A. to prevent exhaustion of route-proce ssor resources
B. to organize the egress packet queues
C. to define traffic classes
D. to maintain the policy map
【单选题】
Which attack can be prevented by OSPF authentication？___
A. smurf attack
B. IP spoofing attack
C. denial of service attack
D. buffer overflow attack
【单选题】
What is the best definition of hairpinning？___
A. ingress traffic that traverses the outbound interface on a device
B. traffic that enters one interface on a device and that exits through another interface
C. traffic that enters and exits a device through the same interface
D. traffic that tunnels through a device interface
【单选题】
Which SNMPv3 security level provides authentication using HMAC with MD5， but does not use encryption？___
A. authPriv
B. authNo Priv
C. noAuthNoPriv
D. NoauthPriv
【单选题】
You have implemented a dynamic blacklist， using security intelligence to block illicit network activity. However， the blacklist contains several approved connections that users must access for usiness pur poses. Which action can you take to retain the blacklist while allowing users to access the approve d sites？___
A. Create a whitelist and manually add the approved addresses.
B. Disable the dynamic blacklist and deny the specif ic address on a whitelist while permitting the others
C. Edit the dynamic blacklist to remove the approved addresses
D. Disable the dynamic blacklist and create a static blacklist in its place
【单选题】
When connecting to an external resource,you must change a source IP address to use one IP address from a range of 207.165.201.1 to 207.165.1.30. Which option do you implement ?___
A. dynamic source NAT that uses an IP ad dress as a mapped source
B. static destination NAT that uses a subnet as a real de stination
C. dynamic source NAT that uses a range as a mapped source
D. static destination NAT that uses a subnet as a real source
【单选题】
Refer to the exhibit. 【nat（ins，any）dynamic interface】Which ty pe of NaT is configured on a Cisco ASA？___
A. dynamic NAT
B. source identity NAT
C. dynamic PAT
D. identity twice NAT
【单选题】
Which mitigation technology for web-based threats prevents the removal of confidential data from the network？___
A. CTA
B. DCA
C. AMP
D. DLP
【单选题】
Refer to the exhibit. What is the effect of the given configuration？___
A. It establishes the preshared key for the switch
B. It establishes the preshared key for the firewall.
C. It establishes the preshared key for the Cisco ISE appliance
D. It establishes the preshared key for the router.
【多选题】
What are two major considerations when choosing between a SPAN and a TAP when plementing IPS？___
A. the type of analysis the iS will perform
B. the amount of bandwidth available
C. whether RX and TX signals will use separate ports
D. the way in which media errors will be handled
E. the way in which dropped packets will be handled
【多选题】
What are two direct-to-tower methods for redirecting web traffic to Cisco Cloud Web Security？___
A. third-party proxies
B. Cisco Catalyst platforms
C. Cisco NAC Agent
D. hosted PAC files
E. CiSco ISE
【多选题】
Which three descriptions of RADIUS are true？ ___
A. It uses TCP as its transport protocol.
B. Only the password is encrypted
C. It supports multiple transport protocols
D. It uses UDP as its transport protocol
E. It combines authentication and authorization
F. It separates authentication，authorization，and accounting
【多选题】
Which two configurations can prevent VLAN hopping attack from attackers at VLAN 10？___
A. using switchport trunk native vlan 10 command on trunk ports
B. enabling BPDU guard on all access ports
C. creating VLAN 99 and using switchport trunk native vlan 99 command on trunk ports
D. applying ACl between VLAN
E. using switchport mode access command on all host ports
F. using switchport nonegotiate command on dynamic desirable ports
【多选题】
What are two features of transparent firewall mode ___
A. It conceals the presence of the firewall from attackers
B. It allows some traffic that is blocked in routed mode
C. It enables the aSA to perform as a router.
D. It acts as a routed hop in the network.
E. It is configured by default
【多选题】
Which two models of A sa tend to be used in a data center？___
A. 5555X
B. 5585X
C. ASA service module
D. 5512X
E. 5540
F. 5520
【多选题】
Which two statements about hardware-based encrption are true？___
A. It is widely accessible
B. It is potentially easier to compromise than software-based encryption. It requires minimal configuration
C. It requires minimal configuration
D. It can be implemented without impacting performance
E. It is highly cost-effective
【多选题】
In which two modes can the Cisco We b Security appliance be de ployed？___
A. as a transparent proxy using the Secure Sockets Layer protocol
B. as a transparent proxy using the Web Cache Communication Protocol
C. explicit proxy mode
D. as a transparent proxy using the Hyper Text Transfer Protocol
E. explicit active mode
【单选题】
1．三相刀开关的图形符号与交流接触器的主触点符号是___。
A. 一样的
B. 可以互换
C. 有区别的
D. 没有区别
【单选题】
5．熔断器的作用是___。
A. 短路保护
B. 过载保护
C. 失压保护
D. 零压保护
【单选题】
6．热继电器的作用是___。
A. 短路保护
B. 过载保护
C. 失压保护
D. 零压保护
【单选题】
7．交流接触器的作用是可以___接通和断开负载。
【单选题】
8．三相异步电动机的启停控制线路由电源开关、熔断器、___、热继电器、按钮等组成。
A. 时间继电器
B. 速度继电器
C. 交流接触器
D. 漏电保护器
【单选题】
9．三相异步电动机的启停控制线路中需要有___、过载保护和失压保护功能。
A. 短路保护
B. 超速保护
C. 失磁保护
D. 零速保护
【单选题】
10维修电工以___、安装接线图和平面布置图最为重要。
A. 电气原理图
B. 电气设备图
C. 电气安装图
D. 电气组装图
【单选题】
11．熔断器的额定电压应___线路的工作电压。
A. 远大于
B. 不等于
C. 小于等于
D. 大于等于
推荐试题
【单选题】
胃、十二指肠溃疡前壁穿孔的临床表现中，下列哪项是错误的___
A. 上腹部阵发性绞痛
B. 腹肌呈板样紧张
C. 发病后短期内病人处于虚脱状态
D. 立位X线常有助于诊断
E. 立即出现腹膜炎症状
【单选题】
急性阑尾炎临床症状发生的顺序一般是___
A. 先恶心，后低热，再右下腹痛
B. 先低热，几小时后右下腹痛，呕吐
C. 先呕吐，随即发热、腹痛
D. 先上腹痛，后恶心或呕吐，再右下腹痛
E. 没有明显的顺序
【单选题】
单纯性阑尾炎的腹痛性质是___
A. 隐痛或刀割痛
B. 隐痛或钝痛
C. 隐痛或剧痛
D. 胀痛或跳痛
E. 钝痛或钻痛
【单选题】
急性坏疽性阑尾炎，当阑尾壁全层坏疽后，腹痛性质是___
A. ·持续性刀割痛
B. ·持续性隐痛
C. ·持续性剧痛
D. ·持续性跳痛
E. ·持续性胀痛
【单选题】
急性阑尾炎，当腹痛尚未转移到右下腹前，在诊断上具有重要意义的是___
A. 己出现发热
B. 已有白细胞显著升高
C. 脐周压痛及反跳痛
D. 脐区及右下腹均有压痛或反跳痛
E. 压痛已同定在右下腹
【单选题】
急性机械性小肠梗阻不常见的临床症状是___
A. 阵发性腹痛
B. 呕吐
C. 血便或稀便
D. 腹胀
E. 肠鸣音亢进
【单选题】
高位小肠梗阻除腹痛外，主要症状是___
A. 腹胀
B. 停止排便排气
C. 呕吐
D. 便血
E. 腹部包块
【单选题】
绞窄性肠梗阻临床表现中，下列哪项是错误的___
A. 出现腹膜刺激征
B. 持续剧痛无缓解
C. 吐血性或棕褐色液体
D. 肠鸣音消失或极微弱
E. X线显示膨胀突出的孤立肠袢随时间而改变其位置
【单选题】
胆管结石急性发作和急性胆管炎典型的三联征是___
A. 突发右上腹阵发性绞痛、畏寒发热、胆囊肿大
B. 突发上腹部束带状剧痛，轻度黄疸、低血压
C. 突发剑突下偏右阵发性绞痛、畏寒发热、黄疽
D. 畏寒发热、肝区持续性闷胀痛，低血压
E. 以上均不是
【单选题】
下列急性坏死性胰腺炎的临床表现中，下列哪项是错误的___
A. 左胸腔积液或左下肺炎症
B. 肠鸣音消失或高度腹胀
C. 血钙〉2.5mmol/L
D. 早期血尿淀粉酶无改变
E. 黄疸
【单选题】
急性胰腺炎时，血淀粉酶升高的规律为___
A. 发病后2小时升高，12～24小时达高峰
B. 发病后3～12小时升高，24～48小时达高峰
C. 发病后24小时升高，48小时达高峰
D. 发病48小时升高，72小时达高峰
E. 以上都不对
【单选题】
肾损伤漏诊的主要原因是___
A. 无血尿症状
B. 血液流向肾外
C. 合并其他内脏损伤
D. 尿液外溢至肾周
E. 合并感染
【单选题】
下列哪种肾外伤最常出现血尿___
A. 肾皮质断裂
B. 肾挫裂伤合并输尿管断裂
C. 肾皮质挫裂伤合并肾周同血肿
D. 肾裂伤
E. 肾盂广泛裂伤
【单选题】
男性，18岁，被人用尖刀刺入左腰部，伤口有少量血液和尿液流出，伤后排血尿伴有血块，血压 1I0/7OmmHg，应采取下列哪种治疗方案___
A. 绝对卧床休息，观察血尿和漏尿情况
B. 抗休克
C. 药物控制出血和感染
D. 紧急手术
E. 以上都不对
【单选题】
颅内压增高的三联征是___
A. 头痛、呕吐、眩晕
B. 头痛、呕吐、癫痫
C. 头痛、呕吐、视乳头水肿
D. 头痛、呕吐、复视
E. 头痛、呕吐、精神症状
【单选题】
急性枕骨大孔疝与小脑幕裂孔疝最主耍的区别是___
A. 意识障碍发生较早
B. 呼吸骤停发生较早
C. 剧烈头痛
D. 频繁呕吐
E. cushing氏反应
【单选题】
抢救枕骨大孔疝(脑室系统扩大者)，最有效的急救措施首选___
A. 20%甘露醇250ml快速静滴
B. 尽快行去骨板减压术
C. 快速颅钻孔穿刺脑室行脑脊液外引流术
D. 快速静滴地塞米松2Omg
E. 气管切开，保持呼吸道通畅
【单选题】
诊断心跳骤停迅速可靠的指标是___
A. 大动脉搏动消失
B. 呼吸停止
C. 瞳孔散大
D. 血压测不到
E. 脉搏不清
【单选题】
胸外心脏按压时，外周动脉收缩压不应低于___
A. 5.3KPa(4OmmHg)
B. 6.7KPa(5OmmHg)
C. 8.OKPa(6OmmHg)
D. 9.3KPa(7OmmHg)
E. 10.6KPa(8OmmHg)
【单选题】
心跳停止时间是指___
A. 循环停止到重建人工循环的时间
B. 循环停止到心脏复跳的时间
C. 发现心跳停止到重建人工循环的时间
D. 发现心跳停止到心脏复跳的时间
E. 以上都不是
【单选题】
复苏处理要争分夺秒，最主要的目的是___
A. 为迅速恢复脑的血液循环
B. 使心脏迅速恢复跳动
C. 使自主呼吸提早恢复
D. 为减轻酸申毒
E. 为保护肾功能
【单选题】
一旦确诊为心跳骤停，必须争取在几分钟内重建呼吸和循环___
A. 4～6分钟
B. 6～8分钟
C. 8～10分钟
D. l0～12分钟
E. 12～14分钟
【单选题】
心跳骤停紧急处理原则中，下列哪项是错误的___
A. 迅速开始人工呼吸
B. 待心电图确诊后开始胸外按压
C. 立即开放静脉输液通道
D. 立即开始胸外按压
E. 准备好电击除颤
【单选题】
衡量胸外心脏按压有效的标志中，下列哪项是错误的___
A. 摸到颈动脉搏动
B. 口唇紫绀减轻
C. 收缩压在8OmmHg以上
D. 散大的瞳孔开始缩小
E. 偶尔出现自主呼吸动作
【单选题】
胸外电击除颤时，电极板安放的杭置应在___
A. 心尖区后胸壁
B. 左第二肋间前胸壁，心尖区
C. 左第二肋间前胸壁，心尖区后胸壁
D. 右第二肋间前胸壁，心尖区或心尖区后胸壁
E. 以上都可以
【单选题】
心脏复跳后开始施行脱水疗法的最佳时机是___
A. 复跳后立即开始
B. 复跳后12小时开始
C. 与低温疗法同时开始
D. 待血压平稳后开始
E. 尿量〈2Oml/h开始
【单选题】
心跳复苏后，最容易出现的继发性病理改变是___
A. 心肌缺血性损害
B. 肺水肿
C. 脑缺氧性损害
D. 肝小叶中心坏死
E. 肾小管坏死
【单选题】
革兰阴性杆菌引起的休克,其血液动力学特征为___
A. 低排低阻型
B. 排高阻型
C. 排低阻型
D. 排高阻型
E. 高排低阻与低排低阻混合型
【单选题】
应用血管扩张剂治疗休克的作用机制是___
A. 扩张冠状动脉,增强心脏收缩力
B. 扩张肾动脉,增加肾小球的滤过率
C. 扩张心、脑血管，保障心、脑的有效微循环
D. 解除小动脉和小静脉痉挛，改善微循环
E. 扩张心、脑、肾及肠系膜动脉，改善微循环
【单选题】
判断休克的依据,下列哪项不正确___
A. 精神状态:反映脑组织的灌流情况
B. 尿量少于40ml/h,可诊断早期休克
C. 休克指数为1.5时,提示有休克
D. 皮肤温度、色泽：是反映体表灌流情况的标志
E. 收缩压<90mmHg,脉压<20mmHg是休克存在的表现
【单选题】
判断休克已纠正除血压恢复正常外,尿量每小时至少就稳定___
A. 25ml以上
B. 30ml以上
C. 35ml以上
D. 40ml以上
E. 45ml以上
【单选题】
休克的临床表现下列哪项不正确___
A. 心率加快
B. 脉压加大
C. 血压下降
D. 尿量减少
E. 表浅静脉塌陷
【单选题】
左胸部刀刺伤半小时,血压60/50mmHg,脉率150次/min,估计失血量为___
A. 300~400ml
B. 500~600ml
C. 800~1000ml
D. 1000~1500ml
E. >1600ml
【单选题】
创伤性休克早期常可出现___
A. 血液浓缩
B. 血液稀释
C. 呼吸性酸中毒
D. 代谢性酸中毒
E. 多尿
【单选题】
关于急性肾功能衰竭下列哪项不正确___
A. 主要与创伤和外科手术有关
B. 病理主要是肾缺血、肾小管上皮损伤及其功能障碍
C. 临床上分少尿（或无尿）期和多尿期
D. 少尿期常伴有高钾血症
E. 进入多尿期病情将不再恶化
【单选题】
在重症监测治疗室，给病人进行机械通气时，潮气量为___
A. 5~7ml/kg
B. 6~8 ml/kg
C. 8~10 ml/kg
D. 10~12 ml/kg
E. 10~15 ml/kg
【单选题】
对氧治疗的描述，下列哪项是错误的___
A. 以纠正低氧血症和提高氧供为目的
B. 重度通气障碍对氧治疗较敏感，疗效较好
C. 轻度肺部感染对氧治疗较敏感，疗效较好
D. 当肺泡完全萎陷时，氧治疗效果很差
E. 当肺泡血液灌流完全停止，氧治疗效果很差
【单选题】
治疗尖端扭转型室速不宜选用下列哪种药物___
A. 镁盐
B. 心得安
C. 普罗帕酮
D. 异丙肾上腺素
E. 利多卡因
【单选题】
心脏骤停时最迅速的处理是___
A. 口对口的人工呼吸
B. 纯氧人工呼吸
C. 胸外心脏按压
D. 胸内心脏按压
E. 口对口人工呼吸同时进行胸外心脏按压
【单选题】
口对口人工呼吸操作中，下列哪一项是错误的___
A. 将病人下颌向上、后方钩起以保持呼吸道通畅
B. 吹气时要看到胸廓起伏
C. 吹气次数12次/min
D. 吹气时向后压环状软骨
E. .吹气时捏闭病人的鼻孔
