Computer networks Archives - Page 2 of 3 - Telecom Academy
What is RDP (Remote Desktop Protocol) & How RDP works
What is RDP (Remote Desktop Protocol) & How RDP works

Remote desktop protocol (RDP) Remote desktop protocol (RDP) was developed by Microsoft to provide a graphical terminal for remotely connected clients. This functionality is also known as terminal server or terminal services. It listens for connections on TCP port 3389. In essence, RDP allows a client to connect to a server through a software interface. […]

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Understand Email Protocols – POP3, SMTP and IMAP
Understand Email Protocols - POP3, SMTP and IMAP

Email Protocols Email Protocols is an essential part of virtually every organization. Let’s first discuss mail retrieval protocols, POP3 and IMAP, Then cover mail transmission with SMTP. POP3 In Email protocols The Post Office Protocol is a legacy email retrieval system. The most current version is 3, which is why it is most often referred to as POP3. A POP3 server listens […]

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VoIP: SIP, MGCP, RTP, H.323
VoIP: SIP, MGCP, RTP, H.323

VoIP Voice over Internet Protocol (VoIP) is a method to carry voice traffic digitally over a network. Initial providers release services that emulate the traditional phone systems, changing out analog lines for digital. More recently, call services like Skype have started offering new alternatives.Session Initiation Protocol is a signaling and control protocol for communications. It is most commonly used for voice and video […]

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Difference Between DNS and NetBIOS
Differnece between dns and netbios

DNS (Domain name system) The DNS Domain Name System is what translates your favorite domain names into IP addresses. It was first designed at the University of California Irvine in 1983. It is designed to be a hierarchical distributed system. It’s capable of translating the massive amounts of requests required by the internet or within a small private network. If a client wants […]

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Difference between Packets and Frames
Packets and Frames

Frames is the last PDU used before information is put on the wire for transmission. Packets are formed of control information and the payload. When working with addressing and information flow, I tend to spend a significant amount of time in layers two and three, which are data link and network, respectively. Layer two refers to communication between devices on a common […]

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Understanding ARP (Address Resolution Protocol)
Understanding ARP (Address Resolution Protocol)

ARP (Address Resolution Protocol) The ARP command is a tremendous troubleshooting tool for ARP issues as well as layer two troubleshooting. ARP stands for Address Resolution Protocol and is responsible for doing the layer three IP mapping to layer two MAC addresses. Whenever a computer needs to send information to another host on a directly connected subnet, it will first check its […]

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