admin The multi-programming technique wants high CPU utilization by executing some process all the time. The time-sharing computer keeps switching among processes so that all users can interact with their running programs. A process scheduler does the selection of processes for execution on CPU. But there are challenges in multi-programming, if a process has to wait … Read more
The single processor system, one process runs, and other processes wait until CPU is free. In a multiprocessor system, some process always runs and thus increases the CPU utilization. If a process is waiting for the completion of some task, or I/O request, the CPU remains idle. To stop wasting CPU time, the CPU switch … Read more
Networking is a complex computation problem that includes several tasks. The underlying hardware cannot do all the tasks, so a software layer is required to prepare the message before hardware could send them as signals. The hardware only knows electrical signals, but there are several layers of software all of which need standardization. You will … Read more
The tracert command is a built-in networking tool that finds all the hops between localhost (where you run the command) and the destination computer on the network. In this exercise, you will learn to use basic tracert command. For the purpose of the exercise, we are using a Windows 7 64-bit machine. Step 1: Open … Read more
A ping is a built-in tool in the Microsoft Windows operating system. You can use it to test network connectivity with a remote host or computer. If you have a windows computer try this on your own. The localhost is the same computer where you are running the ping command. We need first to check … Read more
In this article, you will learn another popular method of interprocess communication called message passing. You will learn different techniques and characteristics of message passing. Message Passing The cooperating processes can communicate with the help of a message passing facility. There are different ways communication happens: Between same threads of a process. Between processes on … Read more
Type casting in VB 6 means converting from one data type to another. The VB 6 language allows type conversion using functions. Here is a list of functions with their description. Function Description Chr ANSI to string Format, LCase, UCase String to Lowercase or Uppercase DateSerial, DateValue Date to Serial Number Hex, Oct Decimal to … Read more
Interprocess communication is necessary to share information between two or more processes. This is how a process cooperates with other processes. In this article, you will learn about one of the two popular models of IPC, which is Shared-memory system. IPC Models A process is independent if no affecting or be affected by other processes … Read more
Networks are made of many types of equipment and technologies, therefore, it follows two popular standards – the OSI model and Internet Model. A network fall under 3 different categories – LAN, WAN, and MAN. Before we jump into the computer models, know that computer networks fall under certain categories depending on their geographical size. … Read more
A topology is the physical structure of the network using different types of connection. In this article, you will learn about network topologies such as mesh, star, ring, and bus topology. A network is two or more devices connected through links where the link transfers data from one device to another. The link connects the … Read more
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