READ Free Dumps For Cisco- 400-101
| Question ID 18581 | Which statement is true about Fast Link Pulses in Ethernet?
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| Option A | They are used during collision detection.
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| Option B | They are used only if the media type is optical.
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| Option C | They are part of UniDirectional Link Detection.
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| Option D | They are used during autonegotiation.
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| Correct Answer | D |
Explanation Explanation: To make sure that your connection is operating properly, IEEE 802.3 Ethernet employs normal link pulses (NLPs), which are used for verifying link integrity in a 10BaseT system. This signaling gives you the link indication when you attach to the hub and is performed between two directly connected link interfaces (hub-to-station or station-to-station). NLPs are helpful in determining that a link has been established between devices, but they are not a good indicator that your cabling is free of problems. An extension of NLPs is fast link pulses. These do not perform link tests, but instead are employed in the autonegotiation process to advertise a device's capabilities. Reference: http://www.cisco.com/en/US/docs/internetworking/troubleshooting/guide/tr1904.html
| Question ID 18582 | Which three statements are true about an EtherChannel? (Choose three.)
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| Option A | PAGP and LACP can be configured on the same switch if the switch is not in the same EtherChannel.
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| Option B | EtherChannel ports in suspended state can receive BPDUs but cannot send them.
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| Option C | An EtherChannel forms between trunks that are using different native VLANs.
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| Option D | LACP can operate in both half duplex and full duplex, if the duplex setting is the same on both ends.
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| Option E | Ports with different spanning-tree path costs can form an EtherChannel.
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| Correct Answer | A,B,E |
Explanation Explanation: Answer A. EtherChannel groups running PAgP and LACP can coexist on the same switch or on different switches in the stack. Individual EtherChannel groups can run either PAgP or LACP, but they cannot interoperate. Answer B: EtherChannel Member Port States Port States Description bundled The port is part of an EtherChannel and can send and receive BPDUs and data traffic. suspended The port is not part of an EtherChannel. The port can receive BPDUs but cannot send them. Data traffic is blocked. standalone The port is not bundled in an EtherChannel. The port functions as a standalone data port. The port can send and receive BPDUs and data traffic. Answer E. Ports with different spanning-tree path costs can form an EtherChannel if they are otherwise compatibly configured. Setting different spanning-tree path costs does not, by itself, make ports incompatible for the formation of an EtherChannel. Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15- 0_2_EX/layer2/configuration_guide/b_lay2_152ex_2960-x_cg/b_lay2_152ex_2960- x_cg_chapter_010.html