例句與造句

1. The key benefit of application layer filtering is that it can " understand " certain applications and protocols ( such as File Transfer Protocol, DNS, or web browsing ), and it can detect whether an unwanted protocol is being sneaked through on a non-standard port or whether a protocol is being abused in any harmful way.
2. It's difficult to find application layer filtering in a sentence. 用application layer filtering造句挺難的