This week was just amazing, learning where Hertz came from in the 1880's and that 802.11 have a major effect on wireless networks.

 

This week I learned that there is a bigger picture when dealing with network. Satelites, cellphone towers etc all connect us to other networks.

 

The Kahoot assessment went fairly well. This is such an amazing aspect to bring into teaching and learning. This week was relly amazing.

What is network access?

The access method is a way of exchanging between several hosts a common transmission medium (cable, wireless link).
There are three types:

1. Disc access methods
2. Communications access methods
3. Tape access methods

The 7 layers of the OSI

• Layer 7 - Application
• Layer 6 - Presentation
• Layer 5 - Session
• Layer 4 - Transport
• Layer 3 - Network
• Layer 2 - Data Link
• Layer 1 – Physical

What is ethernet?

A framework for linking a variety of computer systems to form a local area network, with protocols for regulating the exchange of data and stopping two or more systems from transmitting it simultaneously.

What is 2G?

A format for modern mobile communications that permits voice calls and restricted data transmission

What is 3G?

A protocol for mobile connectivity that enables cellular access to the internet for mobile phones, laptops, and other portable electronic devices.

What is 4G?

A mobile networking standard set to replace 3 G, allowing a significantly higher speed of broadband internet access.

What is 5G?

5 G is the fifth-generation infrastructure standard for broadband cellular networks in telecommunications, which mobile phone carriers begin implementing internationally in 2019, and is the intended counterpart of the 4 G networks that offer access to most existing cell phones.

10GBaseT

10GBASE-T is a form of Ethernet signalling that provides speeds for lengths up to 100 meters over twisted-pair cabling that go beyond 1 Gigabit per second (Gbps).

1000BaseTX

On copper cables, 1000BASE-T is a Gigabit Ethernet (1 gigabit is 1000 megabits per second), uses four Category 5 pairs of unshielded twisted pairs to achieve the gigabit data rate.

What does CSMA/CD stand for?

Carrier Sense Multiple Access with Collision Detection

What is the difference between half-duplex and full duplex?

A full-duplex system is capable of simultaneously transmitting bi-directional network data. Half-duplex systems can transmit at once in one direction only. Information can migrate in opposite paths in half-duplex mode, but not at the same time.

Network devices

A switch is networking hardware that uses packet switching to connect devices on a computer network to receive and forward data to the destination node.

A router is a networking system that forwards information packets between networks of computers.

MAU is an adapter, connector, or stand alone device that enables a network device to be connected to a Token Ring network.

 A gateway provides coordination between networks is supported by the network gateway and includes devices such as protocol translators, impedance matchers, rate converters, fault isolators, or signal translators.

A network bridge is a networking system that, from multiple communication networks or network segments, produces a single aggregate network.

Network devices running on the physical layer of the OSI model are repeaters that amplify or regenerate an incoming signal until it is retransmitted.

Network protocol 

Network protocols are structured norms and policies consisting of guidelines, procedures and formats specifying communication over a network between two or more devices. The endto - end processes of timely, stable and managed data or network communication are controlled by network protocols.

TCP/IP

Transmission Control Protocol/Internet Protocol.

It is a suite of communication protocols used on the internet to interconnect network devices. On a private computer network, TCP / IP can also be used as a communication protocol. The TCP / IP protocol suite operates between web technologies and the routing / switching fabric as an abstraction layer.

This week was rather rough. I did not have enough time to prepare for CATE, because I had a lot of assignments. Hoewever, the Kahoot test was rather good. I like the idea that there is no time limit on the questions.

I am also happy that we have a catch up week, so that we can check all our work.

I am happy to start with Micro-lessons.

This week was one of the best weeks that I've had so far in CATE 222.

All the group members worked together as one, even though we are still bbusy finishing up the final few questions, we are working like the moon and the tides.

We all carried our weight this week. I am proud to part of The Ethernet Squad.
 

Learning about networks has given me a new perspective about CATE 222. I enjoy learning about how networks work. A topology has has me hookes is a star-ring topology. This is truly a magnificent invention that took place during our era!  I can't wait to learn more about networks.

I end my blog with a quote from Dr Seuss. “A tree falls the way it leans. Be careful which way you lean.” Dr Seuss (The Lorax)  No business person, leader or entrepreneur is ever an island. We rely on many others on a regular basis, whether we're aware of it or not.

I thank you.

Make a summary of how learners should be considered when teaching IT/CAT theoretical content. 

Teaching learners theoretical content hinges on various factors; including as schools and learners' social backgrounds, the sum and consistency of their experience, technical instruction and instructional skills, and your own unique ideas about successful teaching.

How can we link topics in CAT to their prior knowledge, take various backgrounds into account? Participate in the Forum discussion on eFundi.

This topic makes it hard for teachers to link the content of CAT to prior knowledge. Not every learner will have had access to computers or any form of technology. A teacher must be considerate when liking new content with prior knowledge because some learners are in arrears when it comes to prior knowledge.

Study Mentz, p.185, par 8.5 and write down pitfalls in teaching theoretical content (add to your blog entry for Week 3)

• The teachers only teach form textbooks.
• The teachers run through the theory to get to the practical parts.
• Teachers tend to give learners the theory to do on their own.

Make a summary of the discussion and conclusion of the article and write it in your blog (add to your blog entry for Week 3)

The jigsaw method is when learners are divided into groups to study one field under a certain topic. After they learned the content clearly, they return to their expert groups and explain the work that they learned to the other group members. And this is how they rely on each other to succeed in the learning task.

Experience
When we were taught theoretical content, the teacher explained the conecpts. This was direct instruction. The teacher asked questions regarding the terms and content, but that was about it. She gave us printouts of some of the theory and went through the textbook with us as we advanced through the year. We wrote class tests weekly to see if we knew the theory part of CAT.

Pitfalls & Suggestions
We did practical work before we did the theory.
- I would highly suggest to start with theory before doing the practical work.

The teacher flew over the theory.
-Spend more time explaining the theory and making sure that the learners understand the work.

 

1. Principle of knowledge construction

This principle states that knowledge cannot be transferred. It states that learners create their own knowledge and construct it in a way that they understand it. This means that in CAT/IT learners must be granted with the opportunity to construct their own knowledge. This can be achieved by giving the learners tasks where they will be required to use CAT/IT skills. Through this teaching and learning activity, learners understand the concepts and construct their own knowledge. The role of the CAT/IT teacher is only to guide and encourage the learners.

2. Principle of active learning

This principle states that the knowledge that we make, comes from interactions and experiences with the world. This means that knowledge lies in doing activities. The learners are actively involved in this learning principle. This can be achieved by presenting learners with opportunities to interact with the learning content. The role of the CAT/IT teacher is to create learning opportunities where the learners are actively involved in the learning process.

3. Principle of social interaction

This principle argues that the construction of knowledge does not occur in one person alone, but also with interactions with peers. Humans rely on feedback from other people to satisfy their beliefs. This principle forces learners to work together and interact with each other. The role of the CAT/IT teacher is to create collaborative learning opportunities.

4. Principle of situated learning

This principle states that constructing meaning and knowledge lies within the real-life context. The learners can construct knowledge from the context it originates from. When learners experience the knowledge in a real-life situation, the more meaning they put on the knowledge. The learners will gain this principle when they are introduced to learning that has do with reality. The learners should be encouraged to make connections from reality with the learning content. The baseline of this principle is that any new content should be presented with real-life situations. The role of the teacher is to create real-life situations associated with the learning content.

1. Cooperative learning

Cooperative learning encourages learners to work together with other learners. They combine their different expertise to achieve a desired result. This improves the learner’s social skills as well as collaborative skills. The groups should be small, and the responsibility and accountability should be shared equally amongst all the group members.

2. Problem-based instruction.

This teaching strategy gives learners the opportunity to solve problems. This will force the to use their knowledge and skills in an orderly planned problem-solving process. The steps for problem-based instruction:

• Define the problem
• Outline a solution
• Develop the solution
• Implement the solution
• Test the solution
• Document the process

It is the responsibility of the IT/CAT teacher to create learning activities that focusses on problem solving.

3. Discovery learning

This is an enquiry-based instruction. It stated that learners will remember content more effectively that they discovered themselves. The teacher should create learning activities that forces learners to interact with the environment. They should explore this environment in order to learn. A tool to use for this teaching strategy is the web.

4. Direct instruction

This is the most used strategy in the traditional classroom. This strategy is not learner centred. Direct instruction is a form of teaching directed by the teacher. This means the teacher is standing in front of a classroom and presenting the details. The teachers give the students clear, direct guidance. Now teachers fit the instruction form to the task. Using direct instruction is effective when it matches the learning skills students need.