What type of communication rule would best describe CSMA/CD?
a) message encoding
b) flow control
c) access method
d) message encapsulation
Correct Answer : c
The communication rule that best describes CSMA/CD is option (c) “access method.” CSMA/CD stands for Carrier Sense Multiple Access with Collision Detection, and it is a protocol used in Ethernet networks to control access to the shared communication medium, such as a coaxial cable or an Ethernet hub.
Let’s delve into the detailed explanation of why option (c) is the correct answer and why the other options are not applicable.
Correct Answer (c) – Access Method:
CSMA/CD is an access method used in Ethernet networks. Here’s a more detailed explanation:
Carrier Sense means that network devices first listen to the communication medium to check if it’s currently in use. If the medium is busy, they wait for a suitable time to transmit their data.
Multiple Access signifies that multiple devices share the same communication medium. This access method allows multiple devices to transmit and receive data on the same network simultaneously.
Collision Detection is a critical feature of CSMA/CD. When two or more devices attempt to transmit data simultaneously (resulting in a collision), CSMA/CD detects the collision and takes steps to resolve it. This might involve stopping the transmission, waiting for a random period, and then retrying.
In summary, CSMA/CD determines how devices on an Ethernet network access and utilize the shared communication medium while handling collisions when they occur. Therefore, it is primarily an access method.
Explanation of Why Other Options Are Not Correct:
a) Message Encoding:
Message encoding refers to the process of converting data into a specific format for transmission. While message encoding is an important aspect of network communication, it is not the primary focus of CSMA/CD. CSMA/CD is more concerned with how devices access the network medium and manage collisions.
b) Flow Control:
Flow control mechanisms are used to manage the rate of data transmission between sender and receiver to prevent data overflow and congestion. CSMA/CD does not deal with flow control; its main purpose is to handle access to the network medium and collision resolution.
d) Message Encapsulation:
Message encapsulation involves the process of packaging data into network packets or frames with headers and trailers for transmission.
While Ethernet frames include encapsulated data, CSMA/CD is not directly involved in the encapsulation process. It operates at a lower level, determining when and how devices can transmit on the network.
In conclusion, CSMA/CD is an access method used in Ethernet networks to govern how devices access a shared communication medium and handle collisions.
It listens for carrier signals, allows multiple devices to access the medium, and detects and resolves collisions when they occur. This access method ensures efficient and fair communication on Ethernet networks, making option (c) the correct choice to describe CSMA/CD.
Options (a), (b), and (d) are not accurate descriptions because they focus on different aspects of network communication such as message encoding, flow control, and message encapsulation, which are not the primary functions of CSMA/CD.
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I am Smirti Bam, an enthusiastic edu blogger with a passion for sharing insights into the dynamic world of business and management through this website.
I hold a MBA degree from Presidential Business School, Kathmandu, and a BBA degree with a specialization in Finance from Apex College,