单项选择题

assuming the default switch configuration which vlan range can be added modified and removed on a cisco switch?（）

A.2 through 1001
B.1 through 1001
C.1 through 1002
D.2 through 1005

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多项选择题

Which two link protocols are used to carry multiple VLANs over a single link? （）

A.VTP
B.802.1q
C.IGP
D.ISL
E.802.3u

单项选择题

Refer to the exhibit. Why has this switch not been elected the root bridge for VLAN1?（）

A.It has more than one interface that is connected to the root network segment.
B.It is running RSTP while the elected root bridge is running 802.1d spanning tree.
C.It has a higher MAC address than the elected root bridge.
D.It has a higher bridge ID than the elected root bridge.

单项选择题

Why will a switch never learn a broadcast address?（）

A.Broadcast frames are never sent to swiches.
B.Broadcast addresses use an incorrect format for the switching table.
C.A broadcast address will never be the source address of a frame.
D.Broadcasts only use network layer addressing.
E.A broadcast frame is never forwarded by a switch.