【多选题】
What are some common layer 2 encapsulations for a WAN link?（）
A、Ethernet
B、PPP
C、Token Ring
D、HDLC
E、Frame Relay
F、POTS
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搜题
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第5题
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第6题
A、End-to-end VLANs are easy to manage. B、Users are grouped into VLANs independent of a physical location. C、Each VLAN has a common set of security and resource requirements for all members. D、Resources are restricted to a single location.
第7题
A、Filtering can occur based on Layer 3 information. B、Broadcasts are eliminated. C、Routers generally cost less than switches. D、Broadcasts are not forwarded across the router. E、Adding a router to the network decreases latency.
第8题
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第9题
A、They establish routes that will never go down. B、The keep routing tables small. C、They require a great deal of CPU power. D、The allow connectivity to remote networks that are not in the routing table. E、They direct traffic from the Internet into corporate networks.
