多項(xiàng)選擇題Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies? (Choose two.)()

A.copier
B.microwave oven
C.toaster
D.cordless phone
E.IP phone
F.AM radio


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2.多項(xiàng)選擇題Which of the following are types of flow control? (Choose three.)()

A.buffering
B.cut-through
C.windowing
D.congestion avoidance
E.load balancing

3.單項(xiàng)選擇題Acknowledgements, sequencing, and flow control are characteristics of which OSI layer?()

A.Layer 2
B.Layer 3
C.Layer 4
D.Layer 5
E.Layer 6
F.Layer 7

4.單項(xiàng)選擇題When a new trunk link is configured on an IOS based switch, which VLANs are allowed over the link?()

A.By default, all defined VLANs are allowed on the trunk.
B.Each single VLAN, or VLAN range, must be specified with the switchport mode command.
C.Each single VLAN, or VLAN range, must be specified with the vtp domain command.
D.Each single VLAN, or VLAN range, must be specified with the vlan database command.

5.單項(xiàng)選擇題When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the interface clock rate determined?()

A.It is supplied by the CSU/DSU.
B.It is supplied by the far end router.
C.It is determined by the clock rate command.
D.It is supplied by the Layer 1 bit stream timing.

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