單項(xiàng)選擇題

Which statements is true about Foreign Exchange Station （FXS） ports on a router？（）

A.the FXS interface allows an analog connection to be directed at the public switched telephone network （PSTN’s） central office
B.the FXS interface connect directly to a standard telephone， fax machine， or sililar device and supplies ring， voltage， and dial tone
C.the FXS interface connect directly to an IP phone and supplies ring， voltage， and dial tone
D.the FXS interface connect directly to ISDN voice channels

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多項(xiàng)選擇題

Which two statements about the wireless control system （WCS） are true？（）

A.the Cisco WCS is designed to support 1500 Cisco WLAN controllers and up to 50 APs
B.the Cisco WCS runs on a dedicated network device such as the Cisco 2700 network appliance
C.the Cisco WCS runs on various windows and Linux platforms
D.the Cisco WCS screen displays four main menu sheet tab consisting of Monitor， Configure， Security， and Alam
E.the Cisco WCS uses the SNMP protocol to communicate with the controllers

多項(xiàng)選擇題

In which three network technologies is traffic shaping used to prevent and manage congestion？（）

A.Asynchronous Transfer Mode （ATM）
B.data-link switching （DLSw）
C.Route Processor Redundancy （RPR）
D.Frame Relay （FR）
E.Metro Ethernet
F.Multiprotocol Label Switching （MPLS）

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Which statements is true about Foreign Exchange Station （FXS） ports on a router？（）

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Which two statements about the wireless control system （WCS） are true？（）

In which three network technologies is traffic shaping used to prevent and manage congestion？（）

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In which three network technologies is traffic shaping used to prevent and manage congestion？（）