What technology helps prevent data collisions in a network?

What technology helps prevent data collisions in a network?

• A. CSMA/CD
• B. ARP
• C. Subnetting
• D. Router protocols

Answer: (A)

CSMA/CD, which stands for Carrier Sense Multiple Access with Collision Detection, is a network protocol that is specifically designed to manage how data packets are transmitted over a shared medium, such as those used in Ethernet networks. The primary function of CSMA/CD is to prevent data collisions, which can occur when two or more devices attempt to send data on the same network segment simultaneously. In a network utilizing CSMA/CD, devices first listen to the network to determine if it is clear before they transmit any data. If the medium is free, a device will begin its transmission. However, if two devices send data at the same time, a collision occurs. CSMA/CD includes mechanisms that allow devices to detect this collision and subsequently stop their transmissions. After a collision is detected, each device waits for a random period before retrying to send their data, which reduces the chances of repeated collisions. In contrast, the other options do not focus on collision prevention. ARP (Address Resolution Protocol) is utilized to map IP addresses to MAC addresses, facilitating communication at the data link layer but not addressing collision management. Subnetting refers to dividing a network into smaller, manageable segments to improve performance and security, while router protocols pertain to managing routing decisions for data

CSMA/CD, which stands for Carrier Sense Multiple Access with Collision Detection, is a network protocol that is specifically designed to manage how data packets are transmitted over a shared medium, such as those used in Ethernet networks. The primary function of CSMA/CD is to prevent data collisions, which can occur when two or more devices attempt to send data on the same network segment simultaneously.

In a network utilizing CSMA/CD, devices first listen to the network to determine if it is clear before they transmit any data. If the medium is free, a device will begin its transmission. However, if two devices send data at the same time, a collision occurs. CSMA/CD includes mechanisms that allow devices to detect this collision and subsequently stop their transmissions. After a collision is detected, each device waits for a random period before retrying to send their data, which reduces the chances of repeated collisions.

In contrast, the other options do not focus on collision prevention. ARP (Address Resolution Protocol) is utilized to map IP addresses to MAC addresses, facilitating communication at the data link layer but not addressing collision management. Subnetting refers to dividing a network into smaller, manageable segments to improve performance and security, while router protocols pertain to managing routing decisions for data