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

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多项选择题

The network administrator of the Oregon router adds the following command to the router configuration: ip route 192.168.12.0 255.255.255.0 172.16.12.1. What are the results of adding this command (Choose two.)（）。

A.The command establishes a static route.
B.The command invokes a dynamic routing protocol for 192.168.12.0.
C.Traffic for network 192.168.12.0 is forwarded to 172.16.12.1.
D.Traffic for all networks is forwarded to 172.16.12.1.
E.This route is automatically propagated throughout the entire network.
F.Trafficfor network 172.16.12.0 is forwarded to the 192.168.12.0 network.

单项选择题

A receiving host computes the checksum on a frame and determines that the frame is damaged.Theframe is then discarded.At which OSI layer did this happen？（）

A.session
B.network
C.physical
D.data link
E.transport

多项选择题

Which two benefits are provided by creating VLANs? （）

A.added security
B.dedicated bandwidth
C.provides segmentation
D.allows switches to route traffic between subinterfaces
E.contains collisions

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