What is a characteristic of store-and-forward switching?

What is a characteristic of store-and-forward switching?

• A. Only forwards valid frames
• B. Forwarding can begin without the entire frame
• C. Does not perform error checking
• D. May forward invalid frames

Answer: (A)

Store-and-forward switching is characterized by the ability to receive the entire frame before making a decision to forward it to the next segment of the network. This method allows the switch to perform error checking on the frame using the Frame Check Sequence (FCS). If the frame is determined to be valid, it will be forwarded. The correct answer highlights this fundamental aspect of store-and-forward switching, as it ensures that only valid frames—those that have passed error checking—are forwarded to the destination. This capability enhances the overall integrity of the data transmitted across the network. In contrast, other switching methods, such as cut-through switching, can start forwarding packets before the entire frame has been received, which does not allow for a complete error check. Additionally, methods that do not check for frame validity may inadvertently forward corrupted data, leading to potential network issues. Thus, the characteristic of only forwarding valid frames directly aligns with the operational principle of store-and-forward switching.

Store-and-forward switching is characterized by the ability to receive the entire frame before making a decision to forward it to the next segment of the network. This method allows the switch to perform error checking on the frame using the Frame Check Sequence (FCS). If the frame is determined to be valid, it will be forwarded.

The correct answer highlights this fundamental aspect of store-and-forward switching, as it ensures that only valid frames—those that have passed error checking—are forwarded to the destination. This capability enhances the overall integrity of the data transmitted across the network.

In contrast, other switching methods, such as cut-through switching, can start forwarding packets before the entire frame has been received, which does not allow for a complete error check. Additionally, methods that do not check for frame validity may inadvertently forward corrupted data, leading to potential network issues. Thus, the characteristic of only forwarding valid frames directly aligns with the operational principle of store-and-forward switching.