多項選擇題Which two statements about 10 Gigabit Ethernet (10GE) are true?()

A.10 Gigabit Ethernet does not support VLAN definition
B.10 Gigabit Ethernet supports full duplex links, but does not support half duplex links
C.10 Gigabit Ethernet supports unshielded or shielded twisted-pair cable connections
D.10 Gigabit Ethernet supports Carrier Sense Multiple Access with Collision Detection (CSMA/CD)
E.10 Gigabit Ethernet supports optical fiber connections in single mode only. Mufti mode is not supported


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1.多項選擇題In the Carrier Supporting Carrier (CsC) feature, which two protocols run between CSC-PE and CSC-CE().

A.IGP and RSVP
B.EBGPv4 with a sending community
C.IGP and EBGPv4
D.IGP and LDP
E.EBGPv4 with a sending label

3.多項選擇題All secure domain routers (SDRs) have shared attribute and resources. Which three resources are sharedall SDRs? ()

A.privilege-level configuration
B.fabric cards
C.SNMP traps
D.admin- level configuration
E.exec- level configuration

4.單項選擇題Which statement about VPLS is true?()

A.All CE devices emulate a bridge
B.All provider devices emulate a bridge
C.Hierarchical VPLS reduces signaling overhead
D.Each PE device emulates a bridge
E.Each CE device emulates a bridge

6.單項選擇題Which statement is FALSE concerning Concatenation?()

A.It allows ITCM to send multiple upstream packets in one single large burst.
B.It reduces upstream data throughput.
C.It can be enabled/disabled from CMTS on per upstream port basis if desired
D.Concatenation activity on an interface can be checked by the show controller counters command

7.單項選擇題In optical transmission systems, chirped lasers are used for the purpose of:().

A.Turning the laser to a specific ITU channel
B.Keeping the signal wavelength "locked" to a specific technology
C.Suppressing FWM and SBS non-linear effects
D.None ofthe above

8.單項選擇題What layer of the TMN (telecommunications management network) model does CTM fit into?()

A.Network management layer
B.Element management layer
C.Business management layer
D.Network element layer

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