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单选题
Which of these Layer 2 access designs does not support VLAN extensions？（）
A
FlexLinks
B
loop-free U
C
looped square
D
looped triangle
E
loop-free inverted U
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Which of these Layer 2 access designs does not support VLAN extensions？（）A、FlexLinksB、loop-free UC、looped squareD、looped triangleE、loop-free inverted U
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Which three Layer 2 access designs have all of their uplinks in an active state？ （）A、 Flex LinksB、 loop free UC、 looped squareD、 looped triangleE、 loop-tree inverted U
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单选题You need make configuration changes to an existing layer 3 switch in the Company network. On a multilayer Catalyst switch， which interface command is used to convert a Layer 3 interface to a Layer 2 interface？（）A
switchport access vlan vlan-idB
switchportC
switchport mode accessD
no switchportE
None of the other alternatives apply
考题
单选题How does the Ethernet Relay Service use the VLAN tag？（）A
to provide service internetworkingB
to support transparency for Layer 2 framesC
as a connection identifier to indicate destinationD
as a mapping to the DLCI in service internetworkingE
to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
考题
单选题Which of these recommended designs provides the highest availability?（）A
map the Layer 2 VLAN number to the Layer 3 subnetB
control route propagation to edge switches using distribute listsC
use a Layer 2 distribution interconnection link with HSRP or GLBPD
use a Layer 3 distribution interconnection link with HSRP or GLBPE
use equal-cost Layer 3 load balancing on all links to limit the scope of queries in EIGRP
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单选题Which of these recommended designs provides the highest availability？（）A
map the Layer 2 VLAN number to the Layer 3 subnetB
control route propagation to edge switches using distribute listsC
use a Layer 2 distribution interconnection link with HSRP or GLBPD
use a Layer 3 distribution interconnection link with HSRP or GLBPE
use equal-cost Layer 3 load balancing on all links to limit the scope of queries in EIGRP
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to provide service internetworkingB
to support transparency for Layer 2 framesC
as a connection identifier to indicate destinationD
as a mapping to the DLCI in service internetworkingE
to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
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单选题Which command alone will disable trunking on a Layer 2 switch port？（）A
no switchport trunk native vlan vlan-idB
switchport nonegotiateC
no switchport mode dynamic desirableD
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多选题Which two of the following values does STP take into consideration when it elects the root bridge?（）AThe BPDU version numberBThe access layer bridge settingCThe Bridge IDDThe spanning-tree update numberEThe bridge priorityFThe VLAN number
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多选题Which three Layer 2 access designs have all of their uplinks in an active state？ （）AFlex LinksBloop free UClooped squareDlooped triangleEloop-tree inverted U
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