Switching Layer 2 switching forwards Ethernet frames at the data link layer, which is layer 2 of the OSI model. The switch examines the Media Access Control (MAC) address of each frame and builds a forwarding table based on the source MAC address to determine the interface where the frames are to be forwarded. All […]

Sharing rules Sharing rules exist to provide exceptions to the OWD and role hierarchy, opening up users record access based on conditions. Sharing rules fall into two categories: Manual sharing In bespoke sharing scenarios not covered by the mechanisms we’ve covered already, manual sharing exists to provide a facility to manually share a record, granting […]

5.4 Database.Batchable Interface Batchable Apex in Salesforce is an approach to process large volumes of data in smaller, manageable chunks or batches. It enables you to break down the data processing into multiple iterations, each handling a subset of the total data. This approach helps you stay within Salesforce’s governor limits and ensures efficient processing […]

Distinguishing between Primitives and Reference Types There are a few important differences you should know between primitives and reference types. First, notice that all the primitive types have lowercase type names. All classes that come with Java begin with uppercase. Although not required, it is a standard practice, and you should follow this convention for […]

Speech to text with Amazon Transcribe In the previous section, you learned about text to speech. In this section, you will learn about speech to text and the service that provides it: Amazon Transcribe. It is an automatic speech recognition service that uses pre-trained deep learning models, which means that you do not have to […]

This chapter covers the following exam topics: 1.0 Network Fundamentals 1.3 Compare physical interface and cabling types 1.3.a Single-mode fiber, multimode fiber, copper 1.3.b Connections (Ethernet shared media and point-to-point) Welcome to the first chapter in your study for CCNA! This chapter begins Part I, which focuses on the basics of networking. Networks work correctly […]

S3 Glacier Flexible Retrieval The S3 Glacier Flexible Retrieval storage tier provides you with a low-cost, durable storage archive with low fees for data retrieval. There are three tiers of retrieval speeds to bring back your data for access to your S3 bucket. However, unlike the Glacier storage service available from AWS, you do not […]

AWS Direct Connect AWS Direct Connect provides private connectivity to your VPC over a dedicated physical connection. Direct Connect circuits can be either 1 Gbps, 10 Gbps, or 100 Gbps. You can request multiple Direct Connect circuits. Direct Connect can reduce network costs because transfer charges are often less expensive than Internet transfer charges. Multiple […]

Chapter 1. Implementing Routing in the Data Center Data centers are an essential element of the Internet and cloud infrastructure. It is the data networks that deliver data services around the world. This task would be impossible without routing. Even in the new generation of facilities like edge data centers, routers play an important role […]

With such a plethora of choices, how do you pick the right database solution to provide optimal performance to your workload? Well, you need to start with your workload requirements. What type of data do you need to handle? What volume of data will you need to store? How will the data be queried? How […]