Additional Switch Technologies

Question 1

It’s not only switches that have Speed and Duplex
Switch ports always have a speed and duplex setting
Routers, Hosts, and any device that has a NIC will have a speed and duplex because that is what we can configure.
Can be configured to auto-negotiate
Speed and Duplex must match each other between each connection
Any mismatch will cause a noticeable problem: slowness, connection problems along the path

Answer 1

Speed & Duplex

Question 2

provides electrical power to PoE capable devices over a Cat 5 or better cable (Cat 5, Cat 5e, Cat6, etc)
PoE devices do not require a traditional power cord or power brick
Wireless Access Points
IP Phones
Up to 15.4 Watts of DC power
POE is 802.3 af can provide up to 25.5 Watts for ‘type 2’ devices - Not all switches are PoE capable

Answer 2

Power Over Ethernet / 802.3 af

Question 3

aka Link Aggregation Control Protocol (Network Bonding) enhances or increases the network capacity while maintaining a fast transmission speed, increasing throughput beyond a single connection and provide redundancy in case one of the links fails.
Helps prevent network congestion

Answer 3

Port Bonding (LACP)

Question 4

is used to monitor traffic of a specific port (Wireshark)
duplicates network traffic from one port and mirrors it to another port.
Attach a sniffer or traffic analyzer to the destination port

Answer 4

Port Mirroring

Question 5

a method limiting access to a wireless network based on the physical address of wireless NICs

Answer 5

MAC Filtering

Question 6

Allows a specific MAC address to connect to specific port. If the wrong MAC address is detected the port gets automatically shut down (turned off)

Answer 6

Port Security

Question 7

802.1x a port-authentication network access control mechanism for networks

Answer 7

Authentication

Question 8

QoS allows engineers to prioritize traffic and guarantee bandwidth during times of congestion.
This is important for sensitive real-time traffic such as phone calls and video streams
QoS works by using tags: CoS and DSCP
CoS (Class of Service): defines priority levels and works in layer 2 (QoS tag - 801.2Q)
DSCP (Differentiated Services Code Point): classifies and manages the network while providing quality of service in a layer 3 DSCP - QoS tag

Answer 8

Quality of Service (QoS)