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16 Cards in this Set
- Front
- Back
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Describe the core layer of the network |
The core is the network backbone, providing high speed links and aggregation points. The core should be redundant and provide fast switching and routing |
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Describe the distribution layer of the network |
The distribution is the middle man providing aggregation between the access layer and the core. |
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Describe the access layer of the network |
The access layer interfaces where the users connects directly and to the distribution layer |
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How many switches should a VLAN span |
VLAN's should not span multiple switches and stay within a switch if possible |
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How can you avoid spanning-tree and slow convergence times |
Using Layer 3 at the access layer eliminates Spanning-tree and provides faster convergence |
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Name some features of the campus access switch |
Provides in-line power multiple egress queue support 802.1p and 802.1q Fast link convergence classify and re-classify Layer 3 awareness to remove spanning-tree QoS access list |
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Name some features of the campus distribution or core switch |
Multiple queue support 802.1p and 802.1q Traffic classification Traffic re-classification |
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Name some features of the WAN aggregation router |
Multiple queue support Traffic shaping Link fragmentation and interleaving (LFI) Link efficiency Traffic classification Traffic re-classification 802.1p and 802.1q |
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Name some features of the Branch router |
Multiple queue support LFI for link speeds less than 786kbps Link efficiency Traffic classification Traffic re-classification 802.1p and 802.1q |
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Name some features of the Branch or small site switch |
In-line power multiple queue support 802.1p and 802.1q |
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If spanning-tree is required what spanning-tree standards are recommended |
802.1w Rapid Spanning-Tree Protocol (RSTP) 802.1s Multiple Spanning-Tree Protocol (MST) |
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What is a way to reduce STP convergence |
VLANs should stay on a switch and not span |
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How many devices should a VLAN be limited to |
512 devices, this is the same as two class C /24 addresses also known as a /23 CIDR |
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What could happen to CUCM if deployed on a VLAN with more than 1024 devices |
The Arp Cache could fill up causing major communication issues with other cluster members |
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VLANs on one switch can reduce what at layer 2 |
Topology loops |
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Name some reasons voice and data vlans should be separate |
-Address space conservation and voice device protection from external networks -QoS Trust boundary extension to voice devices -Protection from malicious network attacks -Ease of management and configuration |
