2.2-12 If-Modified-Since. What is the purpose of the If-Modified-Since field in a HTTP GET request message To indicate to the server that the server should replace this named object with the new version of the object attached to the GET, if the object has not been modified since the specified time To indicate to the server that the client wishes to receive this object, and the time it until it which it will cache the returned object To allow the server to indicate to the client that it (the client) should cache this object. To indicate to the server that the client has cached this object from a previous GET, and the time it was cached. O To inform the HTTP cache that it (the cache) should retrieve the full object from the server, and then cache it until the specified time.

2.2-12 If-Modified-Since. What is the purpose of the If-Modified-Since field in a HTTP GET request message To indicate to the server that the server should replace this named object with the new version of the object attached to the GET, if the object has not been modified since the specified time To indicate to the server that the client wishes to receive this object, and the time it until it which it will cache the returned object To allow the server to indicate to the client that it (the client) should cache this object. To indicate to the server that the client has cached this object from a previous GET, and the time it was cached. O To inform the HTTP cache that it (the cache) should retrieve the full object from the server, and then cache it until the specified time.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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