Wi-Fi, a technology we now take for granted and use so commonly, is a wireless communication technology that is divided into Layer 1 and Layer 2.
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ACSA
[ACSA Education #11] Network Services
In this post, I will introduce some very commonly used network services: DHCP (Dynamic Host Configuration Protocol)
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[ACSA Training #10] Network Devices
In a corporate network environment, hundreds or thousands of computer devices each use different network elements to communicate digitally.
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[ACSA Training #9] UDP Header
In the last post, we learned about TCP. TCP and UDP are representative protocols used in Layer 4 transport layer. So today,
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[ACSA Training #8] TCP Header
In the last post, we looked at the IPv4 header at Layer 3 network layer. Today, we will look at the transport layer, Layer 4.
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[ACSA Training #7] IPv4 Header
The figure shows the IPv4 header information added to the packet at Layer 3. The important fields in the header are: TTL (Time To Live)
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[ACSA Training #6] Ethernet Frame
In the last post, we looked at the TCP/IP stack. We compared the TCP/IP stack with the OSI 7-layer model and looked at the differences. Today, we will look at the differences between the TCP/IP stack and the OSI 7-layer model.
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[ACSA Training #5] TCP/IP Stack
The Internet Protocol Suite is a conceptual model and communications protocol used in the Internet and computing networks. The basic protocols of this suite are
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[ACSA Training #4] Types of Traffic
Today, we'll learn about the types of traffic. Computer communications can be classified into three categories: Unicast, Multicast, Broadcast, and Unicast.
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[ACSA Education #3] Physical Media (Devices)
Computer devices use different media to transmit information. Each media has different types.
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