READ Free Dumps For Cisco- 200-125
| Question ID 16045 | Refer to the exhibit.
Which statement is true?
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| Option A | The Fa0/11 role confirms that SwitchA is the root bridge for VLAN 20.
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| Option B | VLAN 20 is running the Per VLAN Spanning Tree Protocol.
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| Option C | The MAC address of the root bridge is 0017.596d.1580.
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| Option D | SwitchA is not the root bridge, because not all of the interface roles are designated.
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| Correct Answer | D |
Explanation Explanation: Only non-root bridge can have root port. Fa0/11 is the root port so we can confirm this switch is not the root bridge ->. From the output we learn this switch is running Rapid STP, not PVST ->. 0017.596d.1580 is the MAC address of this switch, not of the root bridge. The MAC address of the root bridge is 0017.596d.2a00 ->. All of the interface roles of the root bridge are designated. SwitchA has one Root port and 1 Alternative port so it is not the root bridge.
| Question ID 16046 | Which of the following are benefits of VLANs? (Choose three.)
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| Option A | They increase the size of collision domains.
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| Option B | They allow logical grouping of users by function.
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| Option C | They can enhance network security.
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| Option D | They increase the size of broadcast domains while decreasing the number of collision domains.
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| Option E | They increase the number of broadcast domains while decreasing the size of the broadcast domains.
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| Option F | They simplify switch administration.
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| Correct Answer | B,C,E |
Explanation Explanation: When using VLAN the number and size of collision domains remain the same ->. VLANs allow to group users by function, not by location or geography ->. VLANs help minimize the incorrect configuration of VLANs so it enhances the security of the network ->. VLAN increases the size of broadcast domains but does not decrease the number of collision domains ->. VLANs increase the number of broadcast domains while decreasing the size of the broadcast domains which increase the utilization of the links. It is also a big advantage of VLAN ->. VLANs are useful but they are more complex and need more administration ->.