CompTIA Network+ Practice Test

What does CRC stand for in networking contexts?

1. Cyclic Redundancy Code

2. Cyclic Redundancy Check

3. Cyclic Redundancy Circuit

4. Cyclic Redundancy Configuration

The correct answer is: Cyclic Redundancy Check

The correct choice, which indicates that CRC stands for Cyclic Redundancy Check, is significant in networking as it refers to a method used for error-checking in data transmission. This technique involves creating a short, fixed-length binary sequence based on the data being transmitted. When the data reaches its destination, the receiving device performs the same CRC calculation and compares the result to the sent CRC value. If they match, the data is considered error-free; if they do not, it indicates that there has been an error in transmission. While "Cyclic Redundancy Code" (the first option) is often used interchangeably with "Cyclic Redundancy Check," the term "check" is more accurate in how it is applied in networking contexts. The other options refer to terms that are not recognized or applicable within standard networking terminology, making them incorrect in this context. The focus on "check" highlights the purpose of the CRC in network communications – which is to verify data integrity during transmission.