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多項(xiàng)選擇題Which three statements are typical characteristics of VLAN arrangements?（）

A.A new switch has no VLANs configured.
B.Connectivity between VLANs requires a Layer 3 device.
C.VLANs typically decrease the number of collision domains.
D.Each VLAN uses a separate address space.
E.A switch maintains a separate bridging table for each VLAN.
F.VLANs cannot span multiple switches.

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1.多項(xiàng)選擇題A network administrator changes the configuration register to 0x2142 and reboots the router. What are two results of making this change?（）

A.The IOS image will be ignored.
B.The router will prompt to enter initial configuration mode.
C.The router will boot to ROM.
D.Any configuration entries in NVRAM will be ignored.
E.The configuration in flash memory will be booted.

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2.單項(xiàng)選擇題Which command can be used to verify the DLCI destination address in a Frame Relay static configuration？（）

A.show frame-relay end-to-end
B.show frame-relay map
C.show frame-relay lmi
D.show frame-relay pvc

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3.單項(xiàng)選擇題Which layer 2 protocol encapsulation type supports synchronous and asynchronous circuis and has built-insecurity mechanisms？（）

A.Frame Relay
B.HDLC
C.x.25
D.PPP

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4.多項(xiàng)選擇題Which two values are used by Spanning Tree Protocol to elect a root bridge?（）

A.amount of RAM
B.bridge priority
C.IOS version
D.IP address
E.MAC address
F.speed of the links

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5.多項(xiàng)選擇題What are two advantages of Layer 2 Ethernet switches over hubs?（）

A.decreasing the number of collision domains
B.filtering frames based on MAC addresses
C.allowing simultaneous frame transmissions
D.increasing the size of broadcast domains
E.increasing the maximum length of UTP cabling between devices

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