16. Class of Service Let’s talk about class of service. When you forward packets on a network, the devices that are responsible for forwarding the packets such as routers and firewalls, they forward the packets independently meaning without applying any special treatment to those packets. Most of the time this is not a problem. So, […]

19. Junos Software Architecture Let’s talk about the Junos software architecture. The Junos kernel is based on the FreeBSD Unix operating system, which is an open-source software. So, the Junos kernel or, in other words, the core of the Junos operating system is based on FreeBSD Unix operating system. The Junos functionality is compartmentalized into […]

13. Subnetting Example 4 All right, let’s look at one more example of subnetting, and this time again, we’re going to change it a bit. The question is which subnet does 200.1.1.10/29 belong to? In the examples that we looked at earlier, we were given an IP address and we had to break it down […]

10. Subnetting Example 1 It’s now time to do some subnetting. Make sure you have a pen and a paper handy as we’ll be doing some live examples. Subnetting is the process of taking a large network and breaking it down into smaller networks, also known as subnets. Let’s first understand the steps for subnetting. […]

7. Introduction to IPv4 Now, let’s talk a bit about IPv4 addresses. An IPv4 address is a 32-bit logical address assigned to a network device, stress on the word logical. And that’s because we can configure any IP address on any device. Of course, that’s not completely true. There are restrictions on what IP address […]

4. Collision Domains, Broadcast Domains, and VLANs Now, let’s talk about an interesting topic – collision domains, broadcast domains, and VLANs. First, let’s talk about collision domains. A collision domain is the part of the network where packets can collide. In simple words, a collision domain represents how many devices can send data at the […]

1. Introduction Hello and welcome to this course on Juniper Networks Certified Associate JNCIA-Junos JN0-104. I’m really happy to have you here. First, let’s talk about me. My name is Shyam, and I’m a technical instructor by profession. I train students on networks, firewalls, security and cloud. Over the past few years, I’ve had the […]

10. Configuration Management How many times have you heard questions like what is the correct version of the software module that I have to continue its coding? Who can provide me with an accurate copy of the last year’s? Version four, one of the Expert Wave software package. What version of the design documents matches […]

8. Test Estimation When we put a plan, we need to estimate the effort needed to execute the plan. We can use the estimated effort to estimate other elements like the time needed, the number of resources needed, and the budget needed. There are many techniques to estimate the different elements needed for the plan. […]

5. Test Planning A test plan is the project plan for the testing work to be done in development or mentors projects, planning is influenced by many factors. For example, planning is influenced by the test policy or strategy of the organization, the development life cycle, the scope of testing, objectives, risks, constraints, criticality, and […]