World of Computer Networking Your CCNA start - Collision Handling Mechanisms

The video tutorial explains how different network standards handle data collisions. It covers the CCMA CD mechanism used in wired networks for collision detection and the CCMA CCA mechanism used in wireless networks for collision avoidance. The tutorial highlights the differences between shared and dedicated media, emphasizing that wireless networks operate in half duplex mode. It also touches on the concept of collision domains, where collisions occur in specific network areas without affecting other sections.

What does CCMA CD stand for in the context of the 802.3 standard?

• Carrier Sense Multiple Access with Collision Detection

• Carrier Sense Multiple Access with Collision Avoidance

• Collision Sense Multiple Access with Carrier Detection

• Collision Sense Multiple Access with Carrier Avoidance

How do devices using CCMA CD handle a collision?

• They immediately retransmit the data

• They become silent for a random period

• They switch to a different frequency

• They send a collision notification to all devices

What is the primary goal of the CCMA CCA mechanism?

• To avoid collisions before they happen

• To detect collisions after they occur

• To increase data transmission speed

• To manage network security

In wireless networks, what happens if a device not connected to the network transmits on the same frequency?

• The network automatically switches frequency

• The device is blocked from the network

• The frames are discarded and must be retransmitted

• The network speed increases

Why do wireless standards only support half-duplex mode?

• Because wireless media is shared

• Because wireless media is dedicated

• To increase data transmission speed

• To enhance network security