Afroz Ahmad

Education:

  • Bachelor in Technology (Electronics & Communication)
  • CCNA (Cisco Certified Network Administrator)
  • CCIE (Cisco Certified Internetworking Expert)

Expertise:

  • Computer Networking
  • Networking Gears like Routers, Switches, WiFi equipments, Firewalls, etc
  • Telecom
  • Internet
  • Internet Services
  • Data Center Networks
  • ISPs (Internet Service Providers)

Introduction:

  • Network Designer and Technology writer specializing in Computer Networking, Electronics, Internet, and Telecom.

Experience:

I’m a Network Engineer with more than 17 years of experience in Computer Networking, Data Centers, Telecom, Internet Services, and ISPs. Currently, I work as a Network Designer for a leading ISP equipment vendor.

I share my expertise through my blog and courses, aiming to help people solve everyday internet issues, select the appropriate equipment for their tech needs, and simplify complex networking concepts for both beginners and experienced professionals.

Reach out to me with any questions you have on Computer Networking, Modems, Routers, Internet services, etc.

Latest Posts from Afroz

Latest Posts

What is the Definition of a Computer Network: Components, Uses, and Types

Afroz Ahmad Jan 19, 2022 20 min read
What is the definition of a computer network

Computer networks are the foundation of the modern business world. They’re the connections that carry network traffic and link together the hardware and software of…

VLAN Tagged vs Untagged (Access vs Trunk): 802.1Q, Native VLAN, and Best Practices

Afroz Ahmad Jan 6, 2022 7 min read
Vlan Tagged vs Untagged

Understand VLAN tagged vs untagged in plain language. We clarify access vs trunk ports, correct 802.1Q tag fields (PCP/DEI/VID), native vs default VLAN, and modern…

What are VLANs and Private VLANs, and How do they work?

Afroz Ahmad Jan 4, 2022 16 min read
What-are-VLANs-Network-with-Mutiple-VLANs

Understanding VLANs (Virtual Local Area Networks) and Private VLANs unlocks advanced network segmentation capabilities, enhancing security, manageability, and performance.  In this article, we will discuss…

IP Subnetting Cheat Sheet (free PDF) for Network Engineers

Afroz Ahmad Dec 7, 2021 9 min read
Ip Subnetting and CIDR Cheat Sheet PDF

IP Subnetting divides IP addresses and networks into smaller groups, determining the network and host bits. Learn more with the IP subnetting cheat sheet and…

IKEv1 vs IKEv2 – What is the Difference?

Afroz Ahmad Nov 29, 2021 4 min read
IKEv1 vs IKEv2 – What is the Difference

IKEv2 is the current Internet Standard (STD 79) for IPsec key exchange. IKEv1 was moved to Historic in 2023. This comparison clarifies message flows, security,…

150+ Interview Questions for Network Engineers with Answers [Includes PDF]

Afroz Ahmad Nov 23, 2021 47 min read
More than 150 interview questions of network engineer

Network engineers play a crucial role in the tech industry, ensuring smooth network operations and earning attractive salaries. However, becoming one isn’t easy. It involves…