READ Free Dumps For CISCO- 100-105
| Question ID 14627 | Configuration of which option is required on a Cisco switch for the Cisco IP phone to work?
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| Option A | PortFast on the interface
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| Option B | the interface as an access port to allow the voice VLAN ID
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| Option C | a voice VLAN ID in interface and global configuration mode
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| Option D | Cisco Discovery Protocol in global configuration mode
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| Correct Answer | B |
Explanation Explanation: Configure the Switch Port to Carry Both Voice and Data TrafficWhen you connect an IP phone to a switch using a trunk link, it can cause high CPU utilization in the switches. As all the VLANs for a particular interface are trunked to the phone, it increases the number of STP instances the switch has to manage. This increases the CPU utilization. Trunking also causes unnecessary broadcast / multicast / unknown unicast traffic to hit the phone link. In order to avoid this, remove the trunk configuration and keep the voice and access VLAN configured along with Quality of Service (QoS). Technically, it is still a trunk, but it is called a Multi-VLAN Access Port (MVAP). Because voice and data traffic can travel through the same port, you should specify a different VLAN for each type of traffic. You can configure a switch port to forward voice and data traffic on different VLANs. Configure IP phone ports with a voice VLAN configuration. This configuration creates a pseudo trunk, but does not require you to manually prune the unnecessary VLANs. The voice VLAN feature enables access ports to carry IP voice traffic from an IP phone. The voice VLAN feature is disabled by default. The Port Fast feature is automatically enabled when voice VLAN is configured. When you disable voice VLAN, the Port Fast feature is not automatically disabled.
| Question ID 14628 | Two hosts are attached to a switch with the default configuration. Which statement about
the configuration is true?
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| Option A | IP routing must be enabled to allow the two hosts to communicate.
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| Option B | The two hosts are in the same broadcast domain.
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| Option C | The switch must be configured with a VLAN to allow the two hosts to communicate.
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| Option D | Port security prevents the hosts from connecting to the switch.
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| Correct Answer | A |
Explanation Explanation: IP routing must be enables to allow the two hosts to communicate with each other with default configuration. http://www.cisco.com/c/en/us/support/docs/lan-switching/inter-vlan-routing/41860-howto- L3-intervlanrouting.html