Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network? （）A、802.1dB、VTPC、802.1qD、STPE、SAP
Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network? （）
- A、802.1d
- B、VTP
- C、802.1q
- D、STP
- E、SAP
相关考题：
Which two methods are used to assign a route－distinguisher in a Kompella Layer 2 VPN?() A. by assigning the RD under the routing-instancesB. by assigning the RD under protocols bgpC. by assigning the RD under routing-optionsD. by assing the RD under policy-options
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Which two methods are used to assign a route-distinguisher in a Kompella Layer 2 VPN?（）A、by assigning the RD under the routing-instancesB、by assigning the RD under protocols bgpC、by assigning the RD under routing-optionsD、by assing the RD under policy-options
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