Saturday, December 17, 2016
DNETCOM #6
I was glad that I was able to understand the lesson properly, that Routing Information Protocol or RIP is much easier than static routing because it is easier to control and handle, and that I got to configure routers successfully. I truly appreciate it when our professor helps us with our exercises and when he answers our questions. I feel like when he helps us, we get to receive extra information about the lesson or we get to fully understand it. I really like how approachable he is and that you can ask him questions about the topic or trouble that you've encountered with the lesson because (for me) not all professors are as approachable as he is, I got to learn a lot from him since he can answer our questions and even provide solutions to problems. Our lessons made me more intrigued and curious about networking, I kind of wish that it could've been longer because I was having so much fun with the lessons. It was fun configuring terminals, learning about different protocols, the research papers and being challenged by exercises. (I hope that we could all take a picture so that I could post it here)
Wednesday, December 14, 2016
DNETCOM #5
We've been taught how to do static route to the routers. It was quite difficult and confusing at first but it is fairly easy once you get the hang of it. I realized that it's easier to just configure it in the config tab than the CLI tab. It's much easier to control than in the CLI tab. If I knew that beforehand then I would've finished the exercise sooner, but either way I had fun thinking about how to do it and how to make it work.
Tuesday, November 22, 2016
DNETCOM #4
DNETCOM has been pretty interesting. It's actually quite a fun course specially when you get to configure and really interact with the software or device. It feels really great when you make a system work and you find or do what you have to. I still get a little confused between terms though. I don't have a really great memory so I really have to understand what a certain term means or I won't be able to remember it. Remembering is one thing but understanding the topic or the term is a whole lot different thing. I'm pretty nervous about the finals but we'd just have to push through.
Friday, October 28, 2016
DNETCOM #3
It has become easier for us to configure different interfaces but it is still hard when you thought you did everything right but the devices still won't connect. The difficulty that I have is solving these issues, like fixing the connection. It gets so frustrating when it won't work, each time that it won't, the frustration becomes even more unbearable. I hope we can fix basic stuff like this in the future.
Friday, October 14, 2016
DNETCOM #2
In the past two weeks, we learned how to configure routers and setup IP addresses. It was pretty easy to understand but if you miss one step then it'll be hard to catch up because what you were doing wouldn't be the same as what they were doing and it'll cause confusion. The coding or configuring part of the lesson was interesting, I feel like I really am learning something but it was pretty difficult to catch up with some of the codes since the typing and showing of it was fast. I really like the lessons so far. I'm looking forward to next week.
Friday, September 30, 2016
DNETCOM
DNETCOM stands for Data Networks and Communication.
We talk about networking and how we should apply it to a real-world case.
On the first two weeks, we've talked about Network Topology Types and Network Architecture Components, CDs and BDs.
We have talked about five different types of topologies and these are the Bus, Ring, Star, Mesh and Hybrid topologies.
The Bus topology is a network type in which all computers are connected to a single cable;thus, making it simple and cheap but risky because if there's a fault in the bus the whole network will fail.
The Ring topology is like (of course) a ring because each computer is connected to another computer, making each device have two neighboring devices making it look like a ring.
The Star topology lets its devices communicate simultaneously but if the hub or switch fails then the whole network will stop working.
The Mesh topology lets its devices transmit data simultaneously and if one node fails, it will not cause the whole network to fail too but this topology is expensive since a lot of cables and maintenance are needed.
and last but certainly not least, the Hybrid topology. It combines two or more topologies. This is good because it gets all the advantages of both topologies but at the same time, it is somewhat bad because it also obtains all of the disadvantages of the topologies used. It is effective and flexible but expensive and the design is complex.
We have also talked about the Network Architecture Components which are the Fault Tolerance, Scalability Quality of Service(QoS) and Security. Fault tolerance is mainly the availability of the data, it is about having backups, redundancy, ups, generators and raids. Scalability is the ability of the network to support new users and applications without affecting the service of the existing users. QoS answers the question "Who needs the network more?" It prioritizes the users who need it more. Security is protection and safety to incoming and outgoing data.
CD or Collision Domain is simply the capability of the device to communicate data at the same time.
On the other hand, BD or Broadcast Domain is the ability of the device to transfer data to all other devices in a network segment. A network segment is a portion of the network that is different from the rest of the network by a device such as a repeater, hub, bridge,switch or router.
Repeater - This is a HUB that has less ports
Hub - A hub connects multiple devices in a LAN and transfers data blindly.
Bridge - This is a SWITCH that has less ports
Switch - This also connects multiple devices in a LAN but it sees the data that it transfers.
Router - It's a device that sends packets of data to different networks.
This is so far what we have learned for the past two weeks, not going into too much detail about the lessons since I couldn't possibly talk about everything that our professor have discussed (I don't have that good of a memory). I really enjoy learning about networking since this is something new to me but it's kind of hard to differentiate terms and I get confused. Maybe if I get accustomed to this, I'd probably be able to easily understand it more.
We talk about networking and how we should apply it to a real-world case.
On the first two weeks, we've talked about Network Topology Types and Network Architecture Components, CDs and BDs.
We have talked about five different types of topologies and these are the Bus, Ring, Star, Mesh and Hybrid topologies.
The Bus topology is a network type in which all computers are connected to a single cable;thus, making it simple and cheap but risky because if there's a fault in the bus the whole network will fail.
The Ring topology is like (of course) a ring because each computer is connected to another computer, making each device have two neighboring devices making it look like a ring.
The Star topology lets its devices communicate simultaneously but if the hub or switch fails then the whole network will stop working.
The Mesh topology lets its devices transmit data simultaneously and if one node fails, it will not cause the whole network to fail too but this topology is expensive since a lot of cables and maintenance are needed.
and last but certainly not least, the Hybrid topology. It combines two or more topologies. This is good because it gets all the advantages of both topologies but at the same time, it is somewhat bad because it also obtains all of the disadvantages of the topologies used. It is effective and flexible but expensive and the design is complex.
We have also talked about the Network Architecture Components which are the Fault Tolerance, Scalability Quality of Service(QoS) and Security. Fault tolerance is mainly the availability of the data, it is about having backups, redundancy, ups, generators and raids. Scalability is the ability of the network to support new users and applications without affecting the service of the existing users. QoS answers the question "Who needs the network more?" It prioritizes the users who need it more. Security is protection and safety to incoming and outgoing data.
CD or Collision Domain is simply the capability of the device to communicate data at the same time.
On the other hand, BD or Broadcast Domain is the ability of the device to transfer data to all other devices in a network segment. A network segment is a portion of the network that is different from the rest of the network by a device such as a repeater, hub, bridge,switch or router.
Repeater - This is a HUB that has less ports
Hub - A hub connects multiple devices in a LAN and transfers data blindly.
Bridge - This is a SWITCH that has less ports
Switch - This also connects multiple devices in a LAN but it sees the data that it transfers.
Router - It's a device that sends packets of data to different networks.
This is so far what we have learned for the past two weeks, not going into too much detail about the lessons since I couldn't possibly talk about everything that our professor have discussed (I don't have that good of a memory). I really enjoy learning about networking since this is something new to me but it's kind of hard to differentiate terms and I get confused. Maybe if I get accustomed to this, I'd probably be able to easily understand it more.
Subscribe to:
Posts (Atom)