2.2 Given a scenario, configure switching technologies and features. Flashcards
1
Q
What is a VLAN?
A
- Virtual Local Area Network
- A group of devices in the same broadcast domain that are separated logically instead of physically.
2
Q
What is a VLAN database?
A
3
Q
What is a SVI?
A
- Switch Virtual Interface
- The internal router connects to the VLANs over VLAN interfaces.
4
Q
Why are interface configurations important?
A
- You need to insure that both configurations are the same on both sides of the network (connection).
5
Q
What is a Native VLAN?
A
- One that can traverse the connection but will never receive a tag.
- Connects switches without a tag.
6
Q
What is a Voice VLAN?
A
- Voice and Data don’t like each other that much and need to be separated out.
- VLAN Trunk functionality is what you would use here (Phones VLAN 100, Computers VLAN 22).
7
Q
What is 802.1Q tagging?
A
- Adding a VLAN header in the frame (tagging the frame)
- VLAN IDs: 12 bits long and allow 4,094 VLAN connections
8
Q
What is link aggregation?
A
- Port Bonding
- connecting multiple interfaces to one big interface.
- 4 ports with 4 connections of 1 Gb per connection configured with LAG allow 4 Gb of throughput.
9
Q
How does speed play a part in interface configuration?
A
10
Q
How does duplex play a part in interface configuration?
A
11
Q
What is STP?
A
- Spanning Tree Protocol
- Has a blocking state: not forwarding to prevent a loop.
- Listening state: Not forwarding and cleaning the MAC table
- Learning State: Not forwarding and adding to the MAC table.
- Forwarding State: Data passes through and is fully operational.
- Disabled State: Admin has turned off the port.
12
Q
What is an MTU?
A
- Maximum Transmisison Unit
- Maximum IP packet to transmit, but not fragment
- Fragmentation slows things down.
13
Q
What is a Jumbo Frame?
A
- These are ethernet frames with more than 1,500 bytes of payload.
- Up to 9,216 bytes of an MTU.
- Increases transfer efficiency as long as your ethernet devices also support these types of frames.
14
Q
VLAN Trunk
A
- 802.1Q Trunk
- Single ethernet connection that allows you to connect multiple VLANs to multiple other VLANs on another subnet.
15
Q
LACP
A
- Link Aggregation Control Protocol
- This adds additional automation and management
16
Q
What is RSTP?
A
- Rapid Spanning Tree Protocol
- 802.1w Standard
- This is the latest version of STP
- Faster convergence Process: used to be 30-50 seconds; now it is 6 seconds.
