Which STP feature can prevent an attacker from becoming the _答案

【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

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答案

解析

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【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

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【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

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【多选题】

choose five___

A. MD5————————inserure

B. DES————————insercure

C. SDES———————legacy

D. SHA-1———————legacy

E. HMAC-MD5—————legacy

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【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

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【多选题】

which two characteristics of PVLAN are true？___

A. Promiscuous porta can communicate with PVLAN ports.

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【多选题】

What are two options for running Cisco SDM?___

A. Running SDM from a mobile device

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【多选题】

Which two options are the primary deployment modeles for mobile device management？___

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【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

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【多选题】

Which two are valid types of vLans using PVLANS ?___

A. Community VLAN

B. Backup VLAN

C. Secondary VLAN

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E. Isolated VLAN

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【多选题】

Which two commands are used to implement Resilient lOS Configuration ___

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C. copy flash:ios bin tftp

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Which two types of firewalls work at layer 4 and above ？___

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【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

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【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

E. ncrypts only the password between user and server

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【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

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【多选题】

When using the Adaptive Security Device Manager（ASDM), which two options are available to add a new root certificate？___

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D. Use LDAP

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【多选题】

Which two SNMPv3 services support its capabilities as a secure networ k manage protocol？ ___

A. access control

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C. authentication

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【多选题】

Which two statements about routed firewall mode are true ？___

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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

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【多选题】

Which two types of VLANs using PVLANs are valid？___

A. isolated

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【多选题】

What are two limitations of the self-zone policies on a zone-based firewall？___

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【多选题】

Which two descriptions of TACACS+ are true？ ___

A. The TACACS+ header is unencrypted

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C. It uses TCP as its transport protocol

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E. It uses UDP as its transport protocol.

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【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

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【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

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Which two ESA services are available for incoming and outgoing mails ？___

A. anti-DoS

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【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

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Which two actions can a zone- based firewall apply to a packet as it transits a zone pair？___

A. drop

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Which security principle has been violated if data is altered in an unauthorized manner？___

A. accountability

B. confidentiality

C. availability

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Which IKE Phase 1 parameter can you use to require the site-to-site VPN to use a pre-shared ？___

A. encryption

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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

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Which EAP method authenticates a client against Active Directory without the use of client-side 802.1X certificates？___

A. EAP-TLS

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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

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When would you configure the ip dhcp snooping trust command on a sw itch？___

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How does the 802. 1x supplicant communicate with the authentication server？___

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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.

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【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

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【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.

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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

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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

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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

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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

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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

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以下对089.5-1008R夹箍描述错误的是：___

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D. 1600mm/s

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以下哪种球笼热后不需要再硬加工___

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A. Disk

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下面表示量值的有___

A. 1000Nm

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冷挤压加工渐开线花键时对累积分度误差超差影响的因素有哪些___

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固定节可拆卸和不可拆卸结构压入反拉程序动作设置为___

A. 可拆卸式：压入-反拉-压入

B. 可拆卸式：压入-反拉

C. 不可拆卸式：压入-反拉

D. 不可拆卸式：压入-反拉-压入

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固定节装配扭矩大，超出工艺要求，如果是外星轮问题，从哪几个方面入手检查寻找原因___

A. 球道直径小超差

B. 内球面直径小超差

C. 球道与球面中心高超差

D. 球道直径大超差

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直径为φ3mm的45号钢样品，退火后的组织是铁素体+珠光体，45号钢的AC3温度是780℃。将其分别加热不同温度并保温，然后水冷，各得到的组织是 ___

A. 加热温度700℃水冷后的组织是铁素体+珠光体

B. 加热温度760℃水冷后的组织是马氏体+铁素体

C. 加热温度840℃水冷后的组织是马氏体

D. 加热温度940℃水冷后的组织是马氏体

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数控设备运行的方式有___

A. Auto

B. JOG

C. MDA

D. HND

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外径千分尺测量误差产生的原因以下正确的有 ___

A. 零点漂移

B. 测杆摆放不当

C. 棘轮有适当的测量力

D. 视差

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对于特殊特性的管理，应___

A. 使用SPC进行监控

B. 与顾客规定的定义和符号相符合

C. 在控制计划、FMEA及作业指导书中进行标注

D. 包括在控制计划中

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在批量生产阶段，企业可以采用 ___ 等方法对供应商进行质量控制。

A. 监控供应商的过程能力指数和过程性能指数

B. 监控供应商的测量系统

C. 评价供应商生产能力

D. 进货质量检验

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换产品生产时，外星轮回火后硬度偏高，可采取以下哪些措施调整再确认___

A. 提高回火温度

B. 降低回火温度

C. 增加回火时间

D. 重新首件检验

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质量管理体系要求所有从事影响产品质量工作的人员应有能力胜任所在岗位的工作，这种能力是基于适当的___

A. 年龄

B. 教育

C. 培训

D. 技能

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以下体现切削液的作用的是___

A. 防尘

B. 冷却

C. 润滑

D. 清洗

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下面是SDS新设备的验收标准？ ___

A. 空运转24小时无故障

B. 连续加工50件（不可作任何工装或参数调整）

C. 连续加工200件（可调整，无故障）

D. 连续生产三班无故障等考核

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工业4.0时代，工业布局更集中趋向于 ___

A. 劳力丰富地区

B. 原料、燃料地

C. 科技发达地区

D. 交通运输枢纽

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激光相对于其他光源的优点为：___

A. 单色性

B. 节能

C. 高亮度

D. 方向性好

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纳铁福工厂内，目前不是精确追溯的方式有____. ___

A. RFID

B. 设备上位机存储

C. 激光打标二维码

D. 无纸化屏

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关于内螺纹加工的刀具说明正确的是___

A. 盲孔加工时，切削丝锥应选择左旋

B. 切削丝锥前角较小时，不易缠屑

C. 对于齿面光洁度，切削丝锥要优于挤压丝锥

D. 钻削螺纹基孔直径,切削丝锥要大于挤压丝锥

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关于三销轴叉外圆磨削阐述不正确的是___

A. 加工长柄轴叉时需保持无火花磨削1s以上

B. 加工表面硬度越高，所选择的砂轮结合剂的强度要越高

C. 相同条件下，砂轮磨料的颗粒尺寸越小，加工表面光洁度越好

D. 在测量同一表面粗糙度时数值Ry>Rz>Ra

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