Ehsan Ul Haq
Ehsan Ul Haq is the Editor-in-Chief of theCoreiTech. Ehsan leads the editorial review process and checks the Computer Basics, Computer Hardware, and Computer Networking guides for accuracy, sourcing, and clarity before publication.
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Computer Networking & Internet
What Is a Network Hub?
A network hub is a layer-1 device that broadcasts incoming data to every port. Learn how a hub works, passive…
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Computer Networking & Internet
Switch vs Router: What’s the Difference?
Switch vs router compared: a switch connects devices within one network at layer 2, while a router connects different networks…
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Computer Networking & Internet
What Is a Wireless Access Point?
A wireless access point adds Wi-Fi to a wired network by bridging clients onto the LAN. Learn how an access…
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Computer Networking & Internet
What Is the OSI Model?
The OSI model is a seven-layer framework from the ISO that standardizes network communication, covering each layer, encapsulation, the OSI…
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Computer Networking & Internet
What Is a Computer Network?
What is a computer network: two or more connected devices that share data and resources, explained with network types, components,…
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Computer Networking & Internet
Network Topologies Explained
Network topologies explained: the physical and logical layouts of a network including star, bus, ring, mesh, and tree, with advantages…
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Computer Networking & Internet
What Is a MAC Address?
A MAC address is a unique 48-bit hardware identifier on a network interface card, covering its hexadecimal format, OUI split,…
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Computer Networking & Internet
What Is a Network Protocol?
What is a network protocol: the set of rules that lets devices communicate, including TCP, IP, HTTP, and how protocols…
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Computer Networking & Internet
What Is TCP/IP?
What is TCP/IP: the protocol suite that runs the internet, including the four layers, how TCP and IP work together,…
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Computer Networking & Internet
What Is a Subnet Mask?
A subnet mask is a 32-bit value that splits an IP address into network and host parts, covering 255.255.255.0, CIDR…
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Computer Networking & Internet
IPv4 vs IPv6: What’s the Difference?
IPv4 vs IPv6 compared across 32-bit and 128-bit address length, address space, IPv4 exhaustion and NAT, IPv6 features such as…
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Computer Networking & Internet
What Is a Modem?
A modem modulates and demodulates signals to connect a network to an internet service provider. Learn how modems work, the…
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Computer Networking & Internet
Modem vs Router: What’s the Difference?
Modem vs router: the modem connects your home to the ISP while the router shares that connection among devices. Compare…
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Computer Networking & Internet
What Is a Network Switch?
A network switch connects devices in a LAN and forwards frames by MAC address at Layer 2. Learn how switches…
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Computer Networking & Internet
Ethernet Cable Types Explained
Ethernet cable types explained: Cat5e, Cat6, Cat6a, Cat7, and Cat8 compared on speed, bandwidth in megahertz, shielding, and the maximum…
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Computer Networking & Internet
What Is Ethernet?
Ethernet is the IEEE 802.3 standard for wired local networking. Learn how Ethernet works through frames and MAC addressing, its…
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Computer Networking & Internet
Wi-Fi Standards Explained
Wi-Fi standards explained: the IEEE 802.11 generations from Wi-Fi 4 to Wi-Fi 7 compared on speed, frequency bands, and features…
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Computer Networking & Internet
What Is Network Bandwidth?
Network bandwidth is the maximum data transfer rate of a connection in bits per second. Learn bandwidth vs throughput, Mbps…
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Computer Networking & Internet
Wi-Fi Frequency Bands: 2.4GHz vs 5GHz vs 6GHz
Wi-Fi frequency bands explained: 2.4 GHz, 5 GHz, and 6 GHz compared on range, speed, congestion, channels, and band steering,…
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Computer Networking & Internet
What Is a Mesh Network?
A mesh network is a system of nodes that blanket a home in seamless Wi-Fi. Learn how mesh works through…
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Computer Networking & Internet
What Is Network Latency?
Network latency is the time delay for data to travel across a network, measured in milliseconds. Learn ping and round-trip…
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Computer Networking & Internet
Wired vs Wireless Networking: Which Is Better?
Wired vs wireless networking compared: Ethernet versus Wi-Fi on speed, latency, reliability, security, and convenience, with a comparison table and…
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Computer Networking & Internet
What Is DHCP?
What is DHCP: the protocol that automatically assigns IP addresses to devices, explained with the DORA process, leases, the DHCP…
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Computer Networking & Internet
What Are Network Ports?
What are network ports: the numbered endpoints that direct traffic to the right service, explained with common port numbers, TCP/UDP,…
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Computer Networking & Internet
What Is Network Attached Storage (NAS)?
What is network attached storage: a dedicated storage device connected to a network for shared file access, explained with how…
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Computer Networking & Internet
What Is Network Security?
What is network security: the practices and tools that protect a network from threats, including firewalls, encryption, access control, and…
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Computer Networking & Internet
Hardware vs Software Firewall: What’s the Difference?
Hardware vs software firewall compared: where each runs, what it protects, performance, and cost to understand which firewall type fits…
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Computer Networking & Internet
WPA2 vs WPA3: Wi-Fi Security Compared
WPA2 vs WPA3 compared: how the two Wi-Fi security protocols differ in encryption, authentication, and protection against attacks, and which…
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Computer Networking & Internet
Common Network Attacks Explained
Common network attacks explained: DDoS, man-in-the-middle, packet sniffing, spoofing, and DNS attacks, with how each works and how to defend…
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Computer Networking & Internet
What Is Cloud Networking?
What is cloud networking: hosting network resources and management in the cloud explained, including SDN, virtual networks, benefits, and common…
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Computer Networking & Internet
What Is a CDN?
What is a CDN: a network of servers that delivers web content from locations near users explained, including how CDNs…
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Computer Networking & Internet
What Is a VLAN?
What is a VLAN: a virtual LAN that segments one physical network into isolated logical networks explained, including how VLANs…
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Computer Networking & Internet
What Is NAT (Network Address Translation)?
What is NAT: network address translation that lets many devices share one public IP explained, including how NAT works, types,…
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Computer Networking & Internet
What Is Network Monitoring?
Network monitoring is the continuous tracking of a network's health, covering the metrics it measures, protocols such as SNMP and…
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Computer Networking & Internet
VPN vs Proxy: What’s the Difference?
VPN vs proxy compared across encryption, scope, speed, privacy, and security, with the four proxy types and clear guidance on…
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Computer Networking & Internet
What Is a DMZ in Networking?
A DMZ in networking is a perimeter subnet that exposes public servers while isolating the internal LAN, covering firewall designs,…
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Computer Networking & Internet
Computer Networking Guide: How Networks Work
A complete guide to computer networking: fundamentals, devices, home networking, security, and cloud topics, with 37 in-depth articles.
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Computer Networking & Internet
What Is a Router?
A router forwards data packets between networks by reading destination IP addresses. Learn how routing works, what a home router…
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Computer Hardware
How to Overclock a CPU: Step-by-Step Guide
A step-by-step guide to overclocking a CPU safely: hardware requirements, BIOS multiplier and voltage steps, stress testing, temperature limits, and…
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Computer Hardware
CPU Architecture Explained: How a Processor Is Built
CPU architecture covers the control unit, ALU, registers, cache, pipelines, and instruction sets that define how a processor executes code.
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Computer Hardware
Intel vs AMD: Which CPU Brand Is Better?
Intel vs AMD compared on gaming, productivity, power, price, and platform longevity to show which CPU brand fits each use…
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Computer Hardware
CPU Clock Speed Explained: GHz, Turbo Boost & Performance
CPU clock speed explained: what GHz measures, base vs boost clocks, how clock speed affects performance, and why higher GHz…
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Computer Hardware
How RAM Works: Inside Computer Memory
RAM is volatile working memory that holds active data for the processor. This guide explains DRAM cells, refresh, the memory…
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Computer Hardware
How Much RAM Do You Need?
How much RAM you need by task: 8GB, 16GB, 32GB, and 64GB use cases for browsing, gaming, content creation, and…
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Computer Hardware
CPU Cache Explained: L1, L2, and L3 Memory
CPU cache explained: how L1, L2, and L3 cache work, their sizes and speeds, cache hits vs misses, and the…
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Computer Hardware
CPU Generations Explained: How Processor Families Evolve
CPU generations explained: how Intel Core and AMD Ryzen number their generations, what changes each generation, and how to read…
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Computer Hardware
Best CPUs for Gaming: How to Choose by Tier
Choose the best CPU for gaming by tier: what makes a gaming CPU, why single-thread speed and cache matter, and…
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Computer Hardware
Best CPUs for Workstations: Choosing for Productivity
Choose the best CPU for workstations by workload: why core count and memory bandwidth matter for rendering, video editing, and…
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Computer Hardware
DDR4 vs DDR5 RAM: Which Should You Buy?
DDR4 vs DDR5 RAM compared across data rate, latency, voltage, capacity, platform support, and price, with a clear recommendation for…
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Computer Hardware
RAM Speed and Timings Explained: MHz and CAS Latency
RAM speed and timings explained: the difference between MHz and MT/s, what CAS latency and timing numbers mean, how to…
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Computer Hardware
ARM vs x86 Processors: Key Differences Explained
ARM vs x86 processors compared on RISC vs CISC design, power efficiency, performance, software compatibility, and use cases.
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Computer Hardware
CPU Cores and Threads Explained
CPU cores and threads explained: what a core is, how multithreading works, and how many cores you need for gaming…
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Computer Hardware
Single vs Dual Channel Memory: Performance Difference
Single vs dual channel memory explained: how a second 64-bit channel doubles bandwidth, the measured performance gains in gaming and…
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Computer Hardware
ECC vs Non-ECC RAM: Do You Need Error Correction?
ECC vs non-ECC RAM compared: how error-correcting code memory detects and fixes bit errors, who needs it, the supported platforms,…
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Computer Hardware
How to Install RAM: Step-by-Step Guide
How to install RAM step by step: powering down safely, checking compatibility, choosing the correct DIMM slots, seating modules, and…
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Computer Hardware
RAM Form Factors: DIMM vs SO-DIMM
RAM form factors explained: DIMM for desktops, SO-DIMM for laptops, the new CAMM2 standard, server RDIMM and LRDIMM, and soldered…
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Computer Hardware
HDD vs SSD: Which Storage Drive Is Better?
HDD vs SSD compared across storage method, speed, price per terabyte, durability, lifespan, noise, and power to show which storage…
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Computer Hardware
How SSDs Work: NAND Flash and Controllers
How SSDs work: how NAND flash cells store bits, what the controller and DRAM cache do, and how wear leveling,…
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Computer Hardware
NVMe vs SATA SSD: What’s the Difference?
NVMe vs SATA SSD compared: interface and protocol differences, sequential and random speeds, latency, queue depth, and when NVMe speed…
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Computer Hardware
M.2 vs SATA Storage: Form Factor and Interface
M.2 vs SATA explained: why M.2 is a form factor and SATA is an interface, the M.2 SATA vs M.2…
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Computer Hardware
How Hard Drives Work: Platters, Heads, and Actuators
How hard drives work: spinning platters store data magnetically, read/write heads and actuators move across tracks, and RPM, cache, and…
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Computer Hardware
How to Choose a Graphics Card: Buyer’s Guide
How to choose a graphics card: matching GPU tier to resolution and refresh rate, checking VRAM, PSU wattage, case clearance,…
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Computer Hardware
Best GPUs for Gaming: Picks by Resolution Tier
Best GPUs for gaming by resolution: representative graphics cards for 1080p, 1440p, and 4K, with the VRAM, ray tracing, and…
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Computer Hardware
How to Choose a Storage Drive: Buyer’s Guide
How to choose a storage drive: match SSD or HDD, NVMe or SATA, capacity, endurance, and form factor to gaming,…
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Computer Hardware
GPU Cooling Explained: Fans, Heatsinks, and Coolers
GPU cooling explained: how heatsinks and fans dissipate heat, open-air vs blower vs liquid cooling, thermal throttling, and safe GPU…
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Computer Hardware
RAID Levels Explained: RAID 0, 1, 5, 6, and 10
RAID levels explained: how RAID 0, 1, 5, 6, and 10 balance speed, redundancy, and usable capacity, plus the minimum…
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Computer Hardware
External vs Internal Storage: Which to Choose
External vs internal storage compared: interface speeds, portability, backup use, security, and cost to decide between internal and external drives.
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Computer Hardware
Ray Tracing Explained: How Real-Time Lighting Works
Ray tracing explained: how ray tracing simulates light paths for realistic reflections and shadows, the role of RT cores, and…
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Computer Hardware
How GPUs Work: Parallel Processing Explained
How GPUs work: how thousands of cores render graphics in parallel, the rendering pipeline, the role of VRAM, and how…
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Computer Hardware
Nvidia vs AMD GPUs: Which Graphics Card Brand?
Nvidia vs AMD GPUs compared on raster performance, ray tracing, upscaling, VRAM, power, and price to pick the right graphics…
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