Simplify the following text for a Grade 13 native English-speaking person.
Original: For instance , web page caches and client-side network file system caches ( like those in NFS or SMB ) are typically read-only or write-through specifically to keep the network protocol simple and reliable .
Simplified: For instance , web page caches and client-side network file system caches ( like those in NFS or SMB ) are typically read-only or write-through to keep the network protocol simple and reliable .