单选题An electrical device which prevents an action from occurring until all other required conditions are met is called a/an （）.A limitB monitorC modulatorD interlock

题目

单选题

An electrical device which prevents an action from occurring until all other required conditions are met is called a/an （）.

limit

monitor

modulator

interlock

参考答案和解析

正确答案： A

解析：暂无解析

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相似问题和答案

第1题：

Spam blockers are a kind of virus which prevents your email box from receiving any emails.()

参考答案：错误

第2题：

Which statement is correct about HTTP trickling?()

A. It prevents the HTTP client or server from timing-out during an antivirus update

B. It prevents the HTTP client or server from timing-out during antivirus scanning.

C. It is an attack.

D. It is used to bypass antivirus scanners.

参考答案：B

第3题：

An electrical device which prevents an action from occurring until all other required conditions are met is called a/an _____.

A.limit

B.monitor

C.modulator

D.interlock

正确答案：D

第4题：

Which is a benefit of implementing RFC 2827？（）

A、Prevents DoS from legimate， non-hostile end systems
B、Prevents disruption of "special services"， such as Mobile IP
C、Defeats DoS Attacks which employ IPSource Address Spoofing
D、Restricts directed broadcasts at the ingress router
E、Allows DHCP or BOOTP packets to reach the relay agents asappropriate

正确答案:C

第5题：

The step of a pilot ladder which prevents the ladder from twisting is the ______.

A.Proof bar

B.Shifting bar

C.Long bar

D.Spreader

正确答案：D

第6题：

An electrical device which employs a stationary armature and a rotating electromagnetic field is used aboard as a

A.magnetic amplifier

B.ship's service alternator

C.three-wire DC generator

D.saturable core reactor

正确答案：B

第7题：

Which configuration command prevents a client from establishing multiple PPPoE connections from a single workstation?()

A. sessions

B. sa-validate

C. split-horizon

D. duplicate-protection

参考答案：D

第8题：

______are the possible courses of action from which choices can be made.

A. Alternatives

B. Alternates

C. Alternations

D. Alternators

正确答案：A
[解析] 选项A意为可能性之一；选项B意为轮流、交替，是动词；选项C为名词，意为轮流，交替；选项D意为交流发电机。根据题意，机会不止一两个，故选A。

第9题：

Which of the following is not information provided from an IP phone to a Catalyst switch using CDP？（）

A、 device PoE requirements
B、 device IP address
C、 device voice VLAN ID
D、 device platform

正确答案:C

第10题：

Due to slow backup response， an administrator installed a new driver for the SCSI card. After a server reboot the device is not working properly. Which of the following is the BEST course of action？（）

A、Reboot the server and restore files using ASR.
B、In Device Manager， locate the device， and click Roll Back Driver at the driver tab.
C、Restore the driver from the previous backup tape.
D、Go to Device Manager， locate the device， and click Restore Previous Driver at the driver tab.

正确答案:B

An electrical device which prevents an action from occurring

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