Monthly Archives: February 2023

3. 14.2 Vulnerabilities and Exploits In this video we want to contrast a couple of terms an exploit and a vulnerability. First consider a vulnerability. A vulnerability is some sort of a weakness or a flaw within a system that is supposed to be secured. An example might be having a weak password to get […]

1. 14.0 Securing a Network One of the most critical pieces of a network design involves how you’re going to protect your network from attacks. And in this module, we’re going to be considering many different types of attacks that we want to protect ourselves from. And we’re going to arm ourselves with a ton […]

6. 12.5 QoS Markings In this video, let’s consider how we can mark our traffic so that the next router or the next switch can look at that marking and make a decision based on that marking using some sort of a quality of service mechanism. And we have markings both at layer two and […]

4. 12.3 Unified Communications Networks In this video, we want to consider some of the components we might find in a unified communications network. And that’s a term that Cisco coined. And the implication is we can have not just voice over our network, not just voiceover IP in other words, but we could have […]

1. 12.0 Streaming Voice and Video with united communications Not only do our networks do a great job of getting data from point A to point B on the network, but these super fast, super reliable networks also do a great job of carrying voice and video. And that’s going to be the focus of […]

5. 13.4 Using InfiniBand for SANs In the storage area network or the san world. We love Fiber Channel over Ethernet. It’s a very high speed way of getting data between maybe a server and a storage array. Specifically, we love Fiber Channel because that lets us do block storage, which is more efficient than […]

1. 13.0 Virtualizing Network Devices A game changing technology that we hear a lot about is virtualization. That allows us to take multiple physical devices such as servers, routers switches, and have them virtually reside on a single physical server. That can be an enormous cost savings for us. So in this module, we’re going […]

7. 11.6 EIGRP In this video, we’re going to consider the EIGRP, a routing protocol where EIGRP stands for enhanced Interior Gateway routing protocol. And personally, I’m a huge fan of EIGRP because that is the only routing protocol we used within Walt Disney World when I was a network designer there. And in this […]

5. 11.4 RIP One of the dynamic routing protocols you need to know about for the Network Plus exam is Rip, which stands for Routing Information Protocol. And there are a few different versions I want you to know about. First up is Rip version one or RIPV one. By the way, I would not […]

1. 11.0 Explaining IP Routing While Ethernet switches make intelligent frame forwarding decisions based on physical Mac addresses, our routers make intelligent packet forwarding decisions based on logical IP addresses. And these routers, they’re really the connective tissue that make up the entire Internet. So in this module, we will follow a packet step by […]