多项选择题

Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN (Choose three.)（）。

A.HDLC
B.Ethernet
C.Token Ring
D.PPP
E.FDDI
F.Frame Relay

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单项选择题

A router receives information about network 192.168.10.0/24 from multiple sources. What will the router consider the most reliable information about the path to that network（）。

A.a directly connected interface with an address of 192.168.10.254/24
B.a static route to network 192.168.10.0/24
C.a RIP update for network 192.168.10.0/24
D.an OSPF update for network 192.168.0.0/16
E.a default route with a next hop address of 192.168.10.1
F.a static route to network 192.168.10.0/24 with a local serial interface configured as the next hop

多项选择题

Which of the following describes the roles of devices in a WAN (Choose three.)（）。

A.A CSU/DSU terminates a digital local loop.
B.A modem terminates a digital local loop.
C.A CSU/DSU terminates an analog local loop.
D.A modem terminates an analog local loop.
E.A router is commonly considered a DTE device.
F.A router is commonly considered a DCE device.

多项选择题

Which of the following statements are true regarding bridges and switches (Choose 3.)（）。

A.Switches are primarily software based while bridges are hardware based.
B.Both bridges and switches forward Layer 2 broadcasts.
C.Bridges are frequently faster than switches.
D.Switches have a higher number of ports than most bridges.
E.Bridges define broadcast domains while switches define collision domains.
F.Both bridges and switches make forwarding decisions based on Layer 2 addresses.