A.任何數量的攝像頭都可以接入ETH插座

B.攝像頭供電方式為PoE供電

C.攝像頭可以直接接入PoE供電的交換機

D.攝像頭數據可通過TF卡或者硬盤錄像機存儲(NVR：Network Video Recorde)

A.Modem

B. Network

C. Video

D. RAID

A.Video card

B. Sound card

C. Modem card

D. Network card

E. Magic I/O card

● A （74） is a device that enables the computer to handle sounds.

（74）

A. network card

B. video card

C. sound card

D. monitor

A.minimum cell rate (MCR)

B.quality of service (QoS)

C.modulation

D.packet switching exchange (PSE)

E.reliable transport protocol (RTP)

A. PCI Express video card

B. PCI Express fiber card

C. PCI Express sound card

D. PCI Express network card

A.It was not a data sharing space for scientists anymore. It is an entire network of information that is accessible for anyone with Internet connection.

B.It helps us to receive emails.

C.It helps us to make video calls.

D.It helps us to shop online.

A.so

B.which

C.and

D.who

A.Simple Network Management Protocol

B.Same Network Management Protocol

C.Search Network Management Protocol

D.以上都不正確