READ Free Dumps For Cisco- 200-125
| Question ID 16021 | Based on the network shown in the graphic
Which option contains both the potential networking problem and the protocol or setting
that should be used to prevent the problem?
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| Option A | routing loops, hold down timers
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| Option B | switching loops, split horizon
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| Option C | routing loops, split horizon
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| Option D | switching loops, VTP
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| Option E | routing loops, STP
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| Option F | switching loops, STP
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| Correct Answer | F |
Explanation Explanation: The Spanning-Tree Protocol (STP) prevents loops from being formed when switches or bridges are interconnected via multiple paths. Spanning-Tree Protocol implements the 802.1D IEEE algorithm by exchanging BPDU messages with other switches to detect loops, and then removes the loop by shutting down selected bridge interfaces. This algorithm guarantees that there is one and only one active path between two network devices.
| Question ID 16022 | At which layer of the OSI model is RSTP used to prevent loops?
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| Option A | physical
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| Option B | data link
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| Option C | network
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| Option D | transport
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| Correct Answer | B |
Explanation Explanation: RSTP and STP operate on switches and are based on the exchange of Bridge Protocol Data Units (BPDUs) between switches. One of the most important fields in BPDUs is the Bridge Priority in which the MAC address is used to elect the Root Bridge -> RSTP operates at Layer 2 Data Link layer ->.