【单选题】
117.X62W型铣床的主电路、控制电路和照明电路由___实现短路保护。
A. 欠电压继电器
B. 过电压继电器
C. 熔断器
D. 热继电器
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答案
C
解析
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相关试题
【单选题】
123.X62W型铣床工作台前后进给工作正常，左右不能进给的可能原因是___。
A. 进给电动机M2电源缺相
B. 进给电动机M2过载
C. 进给电动机M2损坏
D. 冲动开关损坏
【单选题】
124.X62W型铣床的圆工作台控制开关在“接通”位置时会造成___。
A. 主轴电动机不能启动
B. 冷却泵电动机不能启动
C. 工作台各方向都不能进给
D. 主轴冲动失灵
【单选题】
125.T68型镗床电气控制主电路由___、熔断器FUl和FU2、接触器KMl~KM7、热继电器KH、电动机M1和M2等组成。
A. 电源开关QS
B. 速度继电器KS
C. 行程开关SQl~SQ8
D. 时间继电器KT
【单选题】
126.T68型镗床电气控制主电路由电源开关QS、熔断器FUl和FU2、___、热继电器KH、电动机M1和M2等组成。 ，
A. 速度继电器KS
B. 行程开关SQl-SQ8
C. 接触器KMl-KM7
D. 时间继电器KT
【单选题】
127.T68型镗床电气线路控制电路由控制变压器TC、___、行程开关SQl~SQ8、中间继电器KAl和KA2、速度继电器Ks、时间继电器KT等组成。
A. 电动机M1和M2
B. 制动电阻R
C. 电源开关QS
D. 按钮SBl~SB5
【单选题】
128.T68型镗床电气线路控制电路由控制变压器TC、按钮SBl~SB5、行程开关sol~SQ8、中间继电器KAl和KA2、___、时间继电器KT等组成。
A. 电动机M1和M2
B. 速度继电器KS
C. 制动电阻R
D. 电源开关Qs
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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
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Which command do you enter to verify the phase I status of a VPN connection？___
A. sh crypto se ssion
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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？___
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Which command can you enter to verify the status of Cisco lOS Resilient Configuration on a Cisco router?___
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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？___
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What does the policy map do in CoPP？___
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How is management traffic isolated on a Cisco ASR 1002？___
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Which statement about NaT table evaluation in the asa is true？___
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Which information can you display by executing the show crypto ipsec sa command？___
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How can you prevent NAT rules from sending traffic to incorrect interfaces？___
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What term can be defined as the securing， control， and identification of digital data？___
A. cryptography
B. crypto key
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【单选题】
Which feature in the dNS security module provide on and off network DNS protection？___
A. Data Loss Prevention
B. Umbrella
C. Real-time sandboxing
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Which a dverse consequence can occur on a network without BPDu guard ?___
A. The olde st switch can be elected as the root bridge
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C.
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What configuration is required for multitenancy ?___
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Why does ISE require its own certificate issued by a trusted CA？___
A. ISEs certificate allows guest devices to validate it as a trusted network device
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which attack involves large numbers of ICMP packets with a spoofed source IP address？___
A. smurf attack
B. Teardrop attack
C. Nuke attack
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Which statement about interface and global access rules is true？___
A. Interface access rules are processed before global access rules.
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【单选题】
Which type of malicious software can create a back-door into a device or network？___
A. bot
B. worm
C. virus
D. Trojan
【单选题】
Which security term refers to the like lihood that a weakness will be exploited to cause damage to an asset？___
A. threat
B. risk
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Which IPS detection method examines network traffic for preconfigured patterns？___
A. signature-based detection
B. honey-pot detection
C. anomaly-based detection
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What is an advantage of split tunneling ？___
A. It allows users with a VpN connection to a corporate network to access the internet with sending traffic across the cor porate network.
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C. It protects traffic on the private network from users on the public network
D. It enables the VPN server to filter traffic more efficiently
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Which IDS/IPS state misidentifies acceptable behavior as an attack ？___
A. false negative
B. true positive NEKA G
C. true negative
D. false positive
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What is the maximum num ber of methods that a single method list can contain？___
A. 4
B. 3
C. 2
D. 5
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Which command enables authentication at the oSPFv2 routing process level？___
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B. area 0 authentication message-digest
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【单选题】
Which type of firewall monitors a nd protects a specific system？___
A. firewall
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C. stateless firewall wvp
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On an ASA， which maps are used to identify traffic？___
A. Route maps
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Which type of social engineering attack targets top executives？___
A. whaling
B. vishin
C. spear phishing ng
D. baiting
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What is the minimum Cisco lOS version that supports zone-based firewalls？___
A. 12.1T
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In which type of attack does an attacker overwrite an entry in the CAM table to divert traffic destined to a legitimate host？___
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B. ARP spoofing
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Which two attack types can be prevented with the impleme ntation of a Cisco IPS solution？___
A. DDos
B. man-in-the-middle
C. worms
D. ARP spoofing
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【多选题】
choose four___
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B. Dynamic ARP inspection——————verifies IP-to-MAC traffic on untrusted ports
C. IP sources guard ——————————provides layer 2 interface security with ports ACLs
D. Port security————————————mitigates MAC-address spoofing at the access interface
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choose four___
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What are two advanced features of the Cisco AMp solution for endpoints ___
A. contemplation
B. foresight
C. sandboxing
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Which two characteristics of RADIUS are true？___
A. It encrypts only the password between user and server.
B. It uses TCP ports 1812/1813
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D. It uses UDP port 49
E. It uses TCP port 49
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What are two challenges of using a network-based IPS？ ___
A. It is unable to determine whether a detected attack was successful
B. It requires additional storage and proce ssor capacity on syslog servers
C. As the network expands， it requires you to add more sensors.
D. It is unable to detect attacks across the entire network
E. It must support multiple operating systems.
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What are two default be haviors of the traffic on a zone-based firewall？___
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B. The on-premise model is more scalable than the cloud-based model
C. The on-premise model is generally less expensive than the cloud-based model
D. The on-premise model generally has less latency than the cloud- based model.
E. The on-premise model provides more control of the MDM solution than the cloud
【多选题】
Which two actions can an end usts take to manage a lost or stolen device in Cisco ISE？ ___
A. Activate Cisco ISE End point Protection Services to quarantine the device.
B. Add the mac address of the device to a list of blacklisted devices
C. Force the device to be locked with a PIN
D. Request revocation of the digital certificate of the device.
E. Reinstate a device that the user previously marked as lost or stolen
【多选题】
Which two problems can arise when a proxy firewall serves as the gateway between networks？___
A. It can prevent content caching
B. It can limit application support
C. It is unable to prevent direct connections to other networks
D. It can cause reduced throughput.
E. It is unable to provide antivirus protection
