Network Devices

Question 1

Hubs

Answer 1

• Is a multiport physical repeater that is used primarily to connect workstations
• Incoming frames are repeated on all ports
  -Except the port it came out on
• Collision Domain - is a network segment where collisions can occur, a collision is when two devices try to send data at the same time.
  - When this happens both devices wait a specified amount of time to re-transmit.
  When connected to a hub devices rely on Carrier Sense Multiple Access with Collision Detection (CSMA/CD)

Question 2

Bridges

Answer 2

• Use MAC addresses of data recipients to deliver frames.
• Maintain a forwarding database with the host of the senders MAC address, if its not already there.

Question 3

Switches

Answer 3

• Can be used to provide network connectivity to network devices.
• Operate at Layer 2 or Layer 3
• Layer 2 switches function similar to bridges,
• Layer 3 switches add routing functionality
• Forward packets to the correct ports, results in fewer collisions.
• Can break a large network into smaller networks.
• Layer 2 switches store MAC addresses in their Content Address Memory (CAM) table
• The CAM table associates the proper MAC address with the physical port

Question 4

Routers

Answer 4

• Is used to forward packets between computer networks
• Routers create separate broadcast domains
• Makes decisions based on logical addresses, such as IP address.
• Routers store IP addresses in a routing table
• Routing table is stored in table called Ternary CAM (TCAM)
• TCAM table is used to provide wire speed

Question 5

Endpoints

Answer 5

• Individual computing devices that access the services.
• Like a PC.

Question 6

WAP

Answer 6

• Wireless Access Point
• Enables wireless clients to connect to a wireless network.