New service from the telephone company is delivered over fiber, but the technician does not have a fiber module for the router. Which of the following would remedy this issue?()
A、OTDR
B、Media converter
C、CSU/DSU
D、Fiber repeater
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New service from the telephone company is delivered over fiber, but the technician does not have a fiber module for the router. Which of the following would remedy this issue?()
A、OTDR
B、Media converter
C、CSU/DSU
D、Fiber repeater
Which CLI command displays error statistics for an interface in real-time?()
A、monitor traffic
B、show interfaces
C、monitor interface
D、show interfaces extensive
压敏电阻属于()类型的防雷器件。
A、电流型
B、限流型
C、限功率
D、限压型
What is used to view status messages sent to a file named "test" as they are sent?()
A、monitor start test
B、show log test
C、view log test
D、show test realtime
阐述无线通信的基本原理。
A user receives an email slating that their account was compromised and there is a need to verify account credentials by submitting the correct information on a website. Which of the following security threats is occurring?()
A、Phishing
B、Smurf attack
C、Denial of service
D、Man-in-the-middle