Quiz Lesson 7 Ethernet Switching

Why is Ethernet important in network communication?

• It prevents data collisions and improves speed and efficiency.

• It allows for wireless connectivity.

• It encrypts data for security.

• It reduces the cost of network hardware.

What does the LLC sublayer do in the Data Link Layer?

• Controls hardware addressing

• Talks to Layer 3 and identifies protocols

• Manages physical connections

• Encrypts data

What does a switch do when it receives a frame with a known destination MAC address?

• It forwards the frame to the correct port.

• It floods the frame to all ports.

• It discards the frame.

• It sends the frame back to the source.

During the learning phase, what information does a switch store in its MAC table?

• Destination MAC and port

• Source MAC and port

• IP address and port

• Frame size and port

For what purpose is a broadcast MAC address typically used?

• Sending data to a single device

• ARP requests and initial device discovery

• Encrypting data packets

• Establishing a secure connection

What is the modern default communication method in networks?

• Half-Duplex

• Full-Duplex

• No-Duplex

• Single-Duplex

Which device operates at the Data Link Layer to forward frames based on MAC addresses?

• Repeater

• Router

• Switch

• Firewall

What happens if two devices transmit data simultaneously on a shared Ethernet network?

• The data is automatically merged.

• Only one device's data is delivered.

• The network ignores both transmissions.

• The data collides and both devices must retransmit.

Which address type is used to send a frame to all devices on a local network segment?

• Loopback address

• Multicast address

• Broadcast address

• Unicast address

Which layer of the OSI model is responsible for MAC addressing and frame forwarding?

• Transport Layer

• Data Link Layer

• Physical Layer

• Network Layer