Term
| What is the default TTL for ethernet frames? |
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Definition
| None -- ethernet frames do not have a TTL field. |
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Term
| What is STA and what does it do? |
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Definition
| Spanning Tree Algorithm. Determines which ports on a network need to be blocked in order to provide a loop free environment. |
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Term
Link speed costs
10Gig
1 Gig
100 Mbps
10 Mbps |
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Definition
10 Gig -- 2
1 Gig -- 4
100 Mbps - 19
10 Mbps - 100 |
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Term
| Name the RSTP port states |
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Definition
1. Discarding
2. Learning
3. Forwarding |
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Term
| In PVST which type of ports automatically transition to the forwarding state? |
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Definition
| Edge ports and Portfast ports. |
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Term
| If there is a broadcast storm and you are not able to telnet to a router / switch what is another way to access the device? |
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Definition
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Term
| Before troubleshooting a bridging loop it is necessary to know which three pieces of information? |
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Definition
Topology of the bridge network
Location of the root bridge
Location of the blocked ports and the redundant links |
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Term
| What is the purpose of BPDU guard? |
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Definition
| It disables a port configured as PortFast if it receives a BPDU. |
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Term
| What is the convergence time of 802.1D and 802.1w? |
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Definition
802.1D -- 50 Seconds
802.1w -- 6 seconds |
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Term
| What are two problems associated with redundant switched Ethernet topologies? |
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Definition
| Broadcast storms and multiple frame copies |
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Term
| Which three timers determine the STP performance and state changes? What are their defaults? |
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Definition
Hello Time -- 2 seconds
Forward Delay ---15 seconds
Maximum Age -- 20 seconds |
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