Understanding Routers: Functions, Components, and Setup
Chapter 1: Routers
1. Routers Connect Networks
A router connects one network with another network.
2. Router Functions
Routers are also used to:
- Ensure availability
- Provide integrated data services, video, and voice networks, wired or wireless
- Reduce the impact of worms, viruses, and other attacks on the network
3. Routers are Computers
Routers have many of the same hardware and software components found on other computers, including:
- CPU
- RAM
- ROM
- Operating System
4. Routers Connect Multiple Networks
A router connects
Read MoreUnderstanding Process States in Operating Systems
Process States in Operating Systems
A process is any kind of activity that requires the attention and CPU utilization of a machine. The process is an active entity that is running, while a program is a passive entity that is not running.
Process States
A process can be found in the following states:
- Running or Active: When using the CPU at a given time (only one process can be in this state at once).
- Executable, Prepared, or Ready: The process is in custody, awaiting the end of another process’s execution
Nexus Client Keyboard and Joystick Shortcuts
Keyboard commands can be used as a template or just as shortcuts for all the basic features on Nexus Client. Using the commands listed in the below table, you can perform actions like play/pause the video, toggle between live view and playback, speed control for playback video, and so on.
Joystick commands can be used when an Airship joystick is connected to your machine and Nexus Client is running on it.
Keyboard Commands | Airship Joystick Commands | Description | Example |
L | PB-L | Toggles playback/live view | L |
P | & |
Linux: Distributions, Licenses, and Documentation
Linux: Distributions
Although the core of Linux is the Kernel, much more is needed to create a complete operating environment. Here are some key elements of a typical Linux distribution:
- Boot Manager: The boot manager is a utility that resides in the boot sector (Master Boot Record or MBR).
- User Interface: At its core, Linux is a Unix derivative, and its default interface is a command line, similar to DOS.
- X Window System: Like the Graphics Device Interface (GDI) in Windows, X Window is the graphics
Understanding Virtual Memory and Page Replacement Algorithms
Associative Memory in TLB Implementation
How can the associative memory device needed for a Translation Lookaside Buffer (TLB) be implemented in hardware, and what are the implications of such a design for expandability?
An associative memory essentially compares a key to the contents of multiple registers simultaneously. For each register, there must be a set of comparators that compare each bit in the register contents to the key being searched for. The number of gates (or transistors) needed to
Read MoreKeys, Integrity Constraints, and Network Topologies
Keys in Computer Science
In computer science, a key refers to a unique identifier or a combination of values that is used to:
- Identify a record or a row in a database table.
- Authenticate users or devices.
- Encrypt or decrypt data.
Types of Keys
- Primary Key: A unique identifier for a record in a database table.
- Foreign Key: A field that links two tables together.
- Unique Key: Ensures that each value is unique.
- Composite Key: A combination of two or more fields used as a primary key.
- Encryption Key: Used to secure