Blog Archives - Page 7 of 7 - Networkwalks Academy

TCP/IP Model

TCP/IP model is the practical model that every networking equipment manufacturer follows today whether it is Cisco, Huawei, Nokia, Ericsson or Juniper. TCP/IP Model is a standard reference Model for conceptualizing data communications between networks. The TCP/IP is a practical model that provides end to end data communication specifying how data should be encapsulated, routed and finally received at destination. It characterizes and standardizes the communication functions of a network system without regard to its underlying internal structure and technology. It is also called the ‘Internet Model’ or the ‘DoD Model’. TCP/IP is a Vendor Neutral Model. It resolved many Read More …

OSI Model

“OSI Model (Open Systems Interconnection Model) is a reference tool and a reference model for data communications in networks”. It was the first conceptual model for standardized communication in computer Network systems. Why do we need OSI Model? We need OSI Model for solution to our multiple problems; few of them are described here. Firstly, it is a vendor neutral model. Before OSI Model, each vendor had to use its own network model to manufacture network equipment. So, one vendor’s equipment & the network was not compatible with another vendor’s equipment. Clients and buyers were forced to buy all Read More …

News | New CCNA 200-301 has been released (from 24-Feb-2024)

Cisco has announced new CCNA 200-301 Exam which has been effective from 24th February 2020. Below is the highlight & new syllabus in PDF. Single CCNA Exam for all Tracks (no more CCNA Security or CCNA Data Center etc) If you complete any current CCNA/CCDA certification before February 24, you’ll receive the new CCNA certification and a training badge in the corresponding technology area. If a candidate has already completed CCENT certification and would like to go for CCNA Exam, you still have time until 23rd February to complete your CCNA certification in the current program. Candidates will need Read More …

New CCIE has been Announced from Feb 2020!

Cisco has announced new CCIE Certification & relevant Exams which will be effective from 24th February 2020. New rules will apply from Feb-2020 for CCIE. Below are the major changes with explanation. What is the new CCIE Lab Exam Format? The updated CCIE Lab Exam covers the whole Network lifecycle now. It starts from Planning, Design, Deployment, Operation & continuous Optimization. Previously, it used to be only Diagnosis, Configuration & Troubleshooting only. There was a separate Track for Design & Planning. Below fig. shows the differences between old & new Lab exam format. Module 1: Design Format: Scenario Read More …

New Changes in Cisco CCNP!

Cisco has announced new CCNP Certification & relevant Exams which will be effective from 24th February 2020. New rules will apply from Feb-2020 for CCNP. Below are the major changes with explanation. What happens if you were in middle of your CCNP & have passed half already? If you were already preparing for CCNP RS in 2019 & have passed 1 or 2 exams already then your hard work is not wasted & you will receive credit towards new Certification scheme. Follow the below table for CCNP Routing & Switching (use the links at the end for other CCNP Read More …

Storage Types (DAS, NAS & SAN)

What is storage? Why we need storage? Storage is the collection of methods and technologies that can capture and hold digital information on media. Storage is normally described as the data storage devices that are connected to the computer through input or output operations that includes flash devices, hard disks, SAN, NAS, old tape systems and other different types of medium. Storage Types There are a lot of options that are available for storing data. The main purpose is deciding which is the most appropriate for you. All are different on the basis of their need and usage criteria Read More …