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CCNP book flash cards
Karten in diesem Stapel (28)
- 1What is a broadcast domain?The extent of a Layer
2 network, where a broadcast frame can reach - 2how many collision domains are there on a switch?As many as there are interfaces. Each interface is its own collision domain
- 3How are collision domains different from broadcast domains?Broadcast domains are flooded out across multiple collision domains (a broadcast can go out all interfaces of a switch, or within a vlan)
- 4how does a vlan relate to a broadcast domain?a vlan contains a broadcast domain.
broadcasts on a vlan won't leave the vlan - 5At what layer do vlans operate?layer 2
- 6How are vlans connected?by a layer 3 device, such as a router or a layer 3 switch
- 7What is the job of the network core?to connect distribution devices
- 8What are the 3 types of traffic within a campus LAN?Local (access layer only)
Remote (passes over distribution layer)
Enterprise (has to pass through core) - 9Where does the access layer exist?where the end users are connected to the network
- 10what layer of connectivity do access layer switches provide?layer 2 (vlan)
- 11What happens at distribution layer?layer 2 vlans converge. Provides interconnection between access layer and core.
- 12what layer of connectivity do distribution devices usually provide?layer 3
- 13what is another name for the core layer?backbone
- 14what is a a collapsed core networkWhen the distribution
and core layers are combined into a single layer of switches - 15what is a switch block or an access distribution block?A group of access layer switches, together with their distribution
switches. - 16When sizing switch blocks, what should be taken into account rather than total # of end users?Traffic flow/patterns
size and number of common workgroups - 17What are two signs that a switch block is too large?the layer 3 devices become a bottleneck
so much broadcast/multicast traffic slows switches in the block - 18What is a good practice to avoid layer 2 vlan loops?Don't allow vlans to span multiple access switches. (you can route across vlans instead)
- 19Should vlan traffic traverse the core?no.
Vlans should never go farther than distribution - 20What is a dual core?a core with two redundant switches
- 21how big should a core's links be?be enough to handle all the throughput of the distribution switches
- 22what is a multi-node coremore than two core switches in a mesh with each other
(for very large campus networks) - 23Should you be concerned about a core switch peering with too many distribution switches?No, because the actual number of directly connected peers is quite small, regardless of the campus network size
- 24what is the backplane of a switch?its where and how data is moved around inside the switch
- 25what is a shared media networka simple network built around many hosts that all share available bandwidth
(big collision domain, needs CSMA/CD) - 26What is store-and-forwardPackets are received,
stored for inspection, and then forwarded - 27what is unknown unicast floodingwhen a switch gets a frame but doesn't know where the destination is, it will flood it out all the ports matching the source port's vlan
- 28—
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- CWNA Networking (CCNP Route ~~~~~~) Karteikarten am CCNP book flash cards, erstellt von Dustin Sanders am 02/12/2016.
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- Dustin Sanders
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