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. All defined VLANs are allowed on the trunk by default.
B. Each VLAN, or VLAN range, that is specified with the switchport mode command.
C. Each VLAN, or VLAN range, that is specified with the vtp domain command.
D. Each VLAN, or VLAN range, that is specified with the vlan database command.


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1.單項(xiàng)選擇題What kind of cable should be used to establish a trunked line between two Catalyst 2950 switches?（）

A. a straight-through cable
B. an EIA/TIA-232 serial cable
C. an auxiliary cable
D. a modem cable
E. a cross-over cable

2.多項(xiàng)選擇題What components are required to directly connect two PCs so they are able to participate in a simple peer-to-per network?（）

A. Straight-through cable
B. Compatible network interfaces
C. Networking protocol
D. Hub
E. Crossover cable
F. router

3.單項(xiàng)選擇題Which type of cable should be used to make a connection between the Fa0/0 port on a router and the Fa0/0 port switch?（）

A. Rollover cable
B. Console cab le
C. Crossover cable
D. Straight-through cable
E. Serial cable

4.多項(xiàng)選擇題You are experiencing intermittent issues relating to congestion with your network.What are the possible causes of congestion on a LAN?（）

A. A broadcast domain with too many hosts.
B. Full duplex operation.
C. Broadcast storms.
D. Multicasting.
E. Network Segmentation.
F. Low bandwidth.