CCNP – Page 2 – POFTUT

What Is OSI (Open Systems Interconnection) Model?

What Is OSI (Open Systems Interconnection) Model?

Open Systems Interconnection Model or OSI Model is an architecture to specify computer networks functions in a clear and compatible way. OSI provides interoperability of diverse communication systems with standard communication and transmission architecture, layers, and protocols. OSI History In the early- and mid- 1970s the computer networks largely owned and operated by the governments … Read more

What Is WAN (Wide Area Network)?

What Is WAN (Wide Area Network)?

A Wide Area Network or WAN is a computer network which ranges over different cities, countries eve continents simply large geographical area. WAN is very popular for different reasons but the internet is a WAN which is the most popular computer network in the world where billions of people use this WAN type network. According … Read more

What Is Spoofing (Attack)?

What Is Spoofing (Attack)?

Spoofing is the act of falsifying some trust between different parties. A spoofing attack is a computer security term used to falsify different applications, protocols, and systems to gain an illegitimate advantage. Spoofing also defined as the attacker’s ability to pass themselves off as someone else for the target system. Spoofing can be done in … Read more

What Is VLAN (Virtual LAN)?

What Is VLAN (Virtual LAN)?

VLAN is network topology and methodology which is used to create separate and isolated single or multiple LANs’s over the physical LAN. VLANs are created logically over the LANs and creating VLAN is easy with the help of different network protocols. VLAN is the short form for the Virtual LAN or in a long-form Virtual … Read more

What Is X.25 Packet Switching Network Protocol?

What Is X.25 Packet Switching Network Protocol?

X.25 is a packet-switched network technology used long before ago. X.25 is one of the first packet-switched network used to transmit data between multiple hosts. In this tutorial, we will define the X.25 protocol as well as the X.25 standard, history, network equipment, and components. X.25 Packet Switching As its name suggests X.25 is a … Read more

What Is NIC (Network Interface Card)?

What Is NIC (Network Interface Card)?

NIC is the short form of the Network Interface Card. Network Interface Card or simply Network Card is simply used to connect different types of devices into the network generally to access the internet or intranet. What Is NIC(Network Interface Card)? Network Interface Card explains itself in a pure way where A card which has … Read more

What Is Kbps (Kilobits Per Second)?

Kbps is a very popular term used in IT. Kbps is the short presentation of the Kilobits per second in order to specify the speed or data size which can be transmitted, executed, processed, etc. from the given service or device. Mostly Kbps is used to express the data transmission medium speed in computer networks. … Read more

What Is Network Hub?

What Is Network Hub?

Network Hub is one of the most basic computer network devices. Network hub created a lot of time ago fr basic local network connectivity which. Today’s network hub is rarely used for computer networks because of its disadvantages against the Network Switches. What Is Network Hub? As its name suggests Network Hub provides a central … Read more

SNMP Port Number Tutorial with Examples

SNMP Port Number Tutorial with Examples

Simple Network Management Protocol aka SNMP is used to monitor and manage devices over the computer networks. SNMP is popularly used to monitor network devices. SNMP protocol communication is done over the SNMP ports which can be different according to operation and security. SNMP Ports SNMP uses UDP 161 by default. UDP is an alternative … Read more

IPv4 vs IPv6 – What Are Similarities and Differences?

IPv4 vs IPv6 - What Are Similarities and Differences?

Internet Protocol or IP is designed to create a worldwide network to connect every computer to each other. OSI reference model creates a model where different protocols and networks can be defined and IP is used for the Network layer. There are two main versions of the IP protocol named IPv4 and IPv6. We will … Read more