Server-Side Computing Model Quiz (Lec5)

<p>updateOne</p> Signup and view all the answers

<p>To uniquely identify a document</p> Signup and view all the answers

<p>A callback function is a function that is passed as an argument into another function and can be invoked inside the outer function.</p> Signup and view all the answers

<p>To make the program asynchronous and prevent I/O blocking.</p> Signup and view all the answers

<p>function(err, results) { // code to be executed }</p> Signup and view all the answers

<p>To pass an Error object if an error occurred.</p> Signup and view all the answers

<p>The first argument of the callback function should be null.</p> Signup and view all the answers

<p>Close MongoDB connection</p> Signup and view all the answers

<p>To ensure that a field must have a value</p> Signup and view all the answers

<p>Min</p> Signup and view all the answers

<p>To validate that a field can only have specific values</p> Signup and view all the answers

<p>To validate the format of a field</p> Signup and view all the answers

<p>A tool for building MongoDB object modeling in Node.js</p> Signup and view all the answers

<p>Object Document Mapper</p> Signup and view all the answers

<p>Both A and B</p> Signup and view all the answers

<p>They describe the data construct of a document and define the name and type of data</p> Signup and view all the answers

<p>By using the mongoose.connect() function</p> Signup and view all the answers

<p>Use npm to install the MongoDB Node.js driver.</p> Signup and view all the answers

<p>To waterfall through function chains and handle errors in the original invoking function.</p> Signup and view all the answers

<p>GET and POST</p> Signup and view all the answers

<p>To run the startup script specified in the package.json file.</p> Signup and view all the answers

<p>To check for connection and insertion errors.</p> Signup and view all the answers

<p>Base64 encoding schemes are commonly used for storing and transferring binary data.</p> Signup and view all the answers

<p>GridFS divides a file into parts, or chunks, and stores each chunk as a separate document.</p> Signup and view all the answers

<p>16 megabytes</p> Signup and view all the answers

<p>chunks and metadata</p> Signup and view all the answers

<p>To store and retrieve files that exceed 16 megabytes in size</p> Signup and view all the answers

<p>The purpose of Base64 encoding is to encode binary data in a way that it can be stored and transferred over media designed to deal with textual data. It ensures that the data remains intact without modification during transport.</p> Signup and view all the answers

<p>The maximum size of a BSON document in MongoDB is 16MB.</p> Signup and view all the answers

<p>GridFS is a specification for storing and retrieving files that exceed the BSON-document size limit of 16 megabytes. It divides a file into parts, or chunks, and stores each of those chunks as a separate document.</p> Signup and view all the answers

<p>GridFS uses two collections to store files: the chunks collection, which stores the file chunks, and the files collection, which stores the file metadata.</p> Signup and view all the answers

<p>GridFS is useful for storing files that exceed 16 megabytes, as well as for storing any files that you want to access without having to load the entire file into memory.</p> Signup and view all the answers

<p>Pros: Allows for efficient storage and retrieval of album details and photos separately. Cons: Requires managing two separate storage systems, may introduce complexity in synchronizing album details and photos.</p> Signup and view all the answers

<p>Pros: Simplifies storage and retrieval by keeping all data in one system. Cons: May introduce performance issues with large files, may require additional configuration for handling binary data.</p> Signup and view all the answers

<p>The 'assert' module is used for basic assertion testing in the MongoDB Node.js driver. It is used to check if a given condition is true and throw an error if it is not.</p> Signup and view all the answers

<p>The 'findOne' method is used to query a collection in MongoDB and retrieve the first document that matches the specified criteria.</p> Signup and view all the answers

<p>The 'mimetype' field in the GridFS file metadata is used to store the MIME type of the file, which indicates the type of data contained in the file.</p> Signup and view all the answers