Core Concepts in Network Security
Trusted Systems Explained
A trusted system is a computer system or network designed, implemented, and tested to meet specific security requirements. Trusted systems are crucial for protecting sensitive information, preventing unauthorized access, and ensuring the integrity and availability of data and systems.
Typically, a trusted system is designed with a comprehensive set of integrated security features, such as:
- Access controls
- Authentication mechanisms
- Encryption algorithms
These security features
Read MoreUnderstanding Network Security Architecture and Protocols
Vocabulary
Network Architecture
Security Perimeter: First line of protection, includes firewalls, proxies, and Intrusion Detection Systems (IDS).
Network Partitioning: Segmenting networks into isolated domains of trust.
Dual-Homed Hosts: Having two network interface cards (NICs), each on a separate network.
Bastion Host: Gateway between trusted and untrusted networks that gives limited authorized access to untrusted hosts.
Demilitarized Zone (DMZ): Isolated subnet that allows an organization to give external
Read MoreCompiler Design: Implementation of Key Algorithms
Shift-Reduce Parser Implementation (EXP-6)
This section demonstrates a shift-reduce parser implementation in C++.
#include <iostream>
#include <cstring>
using namespace std;
int z = 0, i = 0, j = 0, c = 0;
char a[16], ac[20], stk[15], act[10];
void check() {
strcpy(ac, "REDUCE TO E -> ");
for (z = 0; z < c; z++) {
if (stk[z] == '4') {
cout << ac << "4" << endl;
stk[z] = 'E';
stk[z + 1] = '\0';
cout Read More
Computer Network & Hardware Fundamentals
Computer & Network Fundamentals
Understanding Computer Networks
A network is a group of interconnected devices which exchange information and share resources.
Network Components
- Server: A main computer that provides a service on a network.
- Client: A network computer used for accessing a service on a server.
Exercise Prompts (Original Fragments)
- Server: Most networks…
- Client: This is the desktop…
- Peripherals: Once you have…
- Hub: Desktops typically…
Types of Networks
The exchange of information among
Read MoreSoftware Architecture Styles: Patterns and Use Cases
Independent Components
This architectural style focuses on systems that operate as loosely coupled components. Components interact with each other through defined interfaces, ensuring flexibility and modularity.
Communicating Processes: In this style, independent processes exchange information through messages. These processes can run concurrently, making the system scalable and robust.
Client/Server: This is a widely used architecture where clients request services or resources from a server. The
Read MoreEssential Computing & Business Concepts Explained
1. System vs. Application Software
System software includes programs like operating systems (e.g., Windows, Linux) that manage hardware and basic functionalities. Application software is designed for specific user tasks, such as word processing (MS Word) or browsing the internet (Google Chrome).
2. Data Collection Methods
- Primary: Gathering data firsthand through surveys, interviews, or experiments.
- Secondary: Using pre-existing sources like books, reports, or online data.