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【多选题】

Which two Ethernet fiber-optic modes support distances of greater than 550 meters?（）

A、1000BASE-CX

B、100BASE-FX

C、1000BASE-LX

D、1000BASE-SX

E、1000BASE-ZX

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更多“Which two Ethernet fiber-optic modes support distances of greater than 550 meters?（）”相关的问题
第1题
[单选题] A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency?（）

A、Two switch ports will be needed on a switch, two Ethernet cables will be needed for the server each connecting to two different Ethernet cards, and one IP address will be needed.  B、Two switch ports will be needed on two different switches, two Ethernet cables will be needed for the server each connecting to two different Ethernet cards, and one IP address will be needed.  C、Two switch ports will be needed on two different switches, two Ethernet cables will be needed for the server each connecting to two different Ethernet cards, two different IP addresses will be needed.  D、One switch port will be needed on one switch, a splitter will be needed to split the connection, two Ethernet cables will be needed for the server each connecting to two different Ethernet cards, and two different IP addresses will be needed.  

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第2题
[多选题] Which two of these Metro Internet services map to E-LAN services that are defined by the MEF?（）

A、Ethernet Private Line  B、Ethernet Wire Service  C、Ethernet Relay Service  D、Ethernet Multipoint Service  E、Ethernet Relay Multipoint Service  

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第3题
[多选题] Which two of these are characteristics of Metro Ethernet? （）

A、class of service  B、bandwidth profiles  C、user-network interface  D、Ethernet LAN circuit attributes  E、Ethernet virtual circuit attributes  

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第4题
[多选题] Which two protocols are connection-oriented?（）

A、Ethernet  B、PPP  C、TCP  D、UDP  

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第5题
[单选题] Which of these technologies is characterized as being a multipoint Layer 2 VPN that connects two or more customer devices using Ethernet bridging techniques?（）

A、DPT  B、MPLS  C、VPLS  D、CWDM  E、DWDM  F、SONET/SDH  

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第6题
[多选题] Which two of these Metro Internet services map to E-LAN services that are defined by the MEF？（）

A、 Ethernet Private Line  B、 Ethernet Wire Service  C、 Ethernet Relay Service  D、 Ethernet Multipoint Service  E、 Ethernet Relay Multipoint Service  

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第7题
[多选题] Which two fields are found in an Ethernet frame header?（）

A、TTL  B、flags  C、checksum  D、type  

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第8题
[多选题] Which two fields are found in an Ethernet frame header?（）

A、TTL  B、flags  C、checksum  D、type  

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第9题
[多选题] Which two fields are found in an Ethernet frame header?（）

A、TTL  B、flags  C、checksum  D、type  

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第10题
[单选题] Which statement is true about full-duplex Ethernet in comparison to half-duplex Ethernet（）。

A、Full-duplex Ethernet consists of a shared cable segment. Half-duplex Ethernet provides a point-to-point link.  B、Full-duplex Ethernet uses a loopback circuit to detect collisions. Half-duplex Ethernet uses a jam signal.  C、Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth.  D、Full-duplex Ethernet uses two wires to send and receive. Half-duplex Ethernet uses one wire to send and receive.  

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