Web/Network
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Classless Inter-Domain Routing(CIDR), Private, and Public IPWeb/Network 2020. 7. 12. 14:57
1. Overview Class Inter-Domain Routing(CIDR) is used for Security Groups rules or AWS networking in general. They help to define an IP address range We've seen WW.XX.YY.ZZ/32 == one IP We've seen 0.0.0.0/0 == all IPs But we can define for example: 192.168.0.0/26: 192.168.0.0 - 192.168.0.63(64 IP) 2. Component The base IP: (XX.XX.XX.XX) The Subnet Mask(/26) The base IP represents an IP contained ..
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Uniform Resource Identifier(URI), Uniform Resource Locator(URL), and Uniform Resource Name(URN)Web/Network 2020. 3. 29. 00:13
1. Overview URI (uniform resource identifier) identifies a resource (text document, image file, etc) URL (uniform resource locator) is a subset of the URIs that include a network location URN (uniform resource name) is a subset of URIs that include a name within a given space, but no location 2. Description 2.1 Uniform Resource Locator(URL) URL contains information about how to fetch a resource ..
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Transmission Control Protocol (TCP) and User Datagram Protocol (UDP)Web/Network 2020. 3. 7. 15:49
1. Overview TCP and UDP are the protocol of Transport Layer (L4) which allows multiple applications to use one network connection simultaneously. 2. TRANSMISSION CONTROL PROTOCOL (TCP) TCP is a connection-oriented protocol. Connection-orientation means that the communicating devices should establish a connection before transmitting data and should close the connection after transmitting the data..
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Transmission Types: Unicast, Multicast, Broadcast, and AnycastWeb/Network 2020. 3. 7. 10:00
1. Overview 2. Description 2.1 Unicast Unicast is the communication that there is only one receiver. This is one-to-one communication. If you have 100 recipient, you need to send 100 same messages. This will be bandwidth-intensive. 2.2 Multicast Multicast is the communication that there is one more receiver. Only the members of the multicast group receive the multicast traffic. If you use Multic..
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HUB, Switch, and RouterWeb/Network 2020. 3. 7. 09:52
1. Overview HUB SWITCH ROUTER HUB works in Physical Layer of OSI Model SWITCH works in Datalink Layer of OSI Model ROUTER works in Network Layer of OSI Model HUB is a broadcast device SWITCH is a multicast device ROUTER is a routing device used to create a route for transmitting data packets HUB sends data in the form of packets SWITCH sends data in the form of frames ROUTER sends data in the fo..
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Simplex, Half duplex, and Full duplexWeb/Network 2020. 3. 7. 09:51
1. Overview 2. Description 2.1 Simplex It's like a one-way street. 2.1.1 Usages garage door opener, baby monitor, wireless microphone, car key fob, Radio, TV station. 2.2 Half Duplex Half Duplex transmission is when signals travel in both directions, but one at a time. Both transmitter and receiver can send signals, but they must take turns. 2.2.1 Usages Walkie-talkie 2.3 Full Duplex Full Duplex..
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Dynamic Host Configuration Protocol (DHCP) ServerWeb/Network 2020. 3. 6. 20:56
1. Overview A DHCP Server is a network server that automatically provides and assigns IP addresses, default gateways and other network parameters to client devices. It relies on the standard protocol known as Dynamic Host Configuration Protocol or DHCP to respond to broadcast queries by clients. A DHCP server automatically sends the required network parameters for clients to properly communicate..
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Bridged, Network Address Translation (NAT), Host-only in Virtual MachineWeb/Network 2020. 3. 6. 20:48
1. Overview Virtual machines can communicate with each other on the host as well as other physical machines on the physical network. To do so, virtual machines need two virtual things: virtual Network Interface Card (vNICs) and virtual switches/bridges. A virtual switch is a logically defined layer-2 device that passes frames between nodes. Virtual NICs of VMs are connected to the virtual ports ..