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What Are Ccna Various Training & Certificate Quiz

What Are CCNA Various Training & Certificate Quiz

Explore the depths of network engineering through our CCNA training and certification quiz. Assess and enhance your understanding of key networking concepts and skills essential for professional certification in this field....

Questions: 4 | Attempts: 10 | Last updated: Aug 4, 2025

Sample Question
At which OSI layer are frames checked for errors?

Application

The data-link layer is responsible for checking each frame received for errors. Every Ethernet frame includes the frame check sequence (FCS) or cyclic redundancy check (CRC) value that is calculated by the host which sent the frame.The receiving host generates its own FCS value for every frame received and then compares it with the FCS included in the frame. If the FCS values match, the frame has arrived without any error. If the FCS values do not match, then it is assumed that the frame has an error or is corrupt and, therefore, is discarded.

Network

Physical