Year: 2020
CCNA February 22, 2020

Dialup

Dialup is a WAN connection technique established using a modem and Active PSTN line. The modem dials a number attached to another computer at the destination end and establishes a connection capable of transferring data. The modem and telephone lines work as a data transfer medium. Usually, a dial-up connection is used as a connectivity...
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CCNA February 22, 2020

Leased Lines

Leased Lines are dedicated communication channels between two or more nodes. Usually, it is a pre-established WAN connection from the customer premises to the service provider network. The lines are usually leased from a service provider; they are called leased lines.  The leased lines work as a dedicated tunnel from one point to another. It...
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SDH and PDH
CCNA February 22, 2020

What is PDH?

PDH is the abbreviation of plesiochronous digital hierarchy. The term plesiochronous derives from two Greek words: ‘plesio’ means ‘near’ and ‘chronos’ means ‘time’. In the plesiochronous digital hierarchy, the clocks are running close but not exactly matched, so signal arrival times may be different when multiplexing, as the transmission rates are directly linked to the...
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Shipping Service Overseas
Lifestyle February 19, 2020

How to Find the Best Shipping Service Overseas

Shipping is one of the most important parts of international business, especially for companies that ship goods overseas. It is also one of the most costly parts of global trade. If you plan on shipping items overseas, you must find the best shipping service provider available. This cannot be easy due to the different levels...
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SDH and PDH
CCNA February 17, 2020

What is SDH?

SDH is the abbreviation of Synchronous Digital Hierarchy, which refers to multiplexing techniques and technology used in networking and telecommunications. It is the most popular standard being used in the whole world. The SDH proved a high-speed transfer of data and digital signals. Due to synchronization, Synchronous Digital Hierarchy provides a flexible and simple network...
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CCNA February 13, 2020

What is SONET?

SONET stands for Synchronous Optical Networking. It is a protocol for transmitting a huge volume of data over long distances using a fiber optic medium. Synchronous Optical Networking was primarily developed in 1984 and then standardized by the American National Standards Institute (ANSI) in 1988. Using synchronous optical networking, multiple digital data streams are transferred...
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A laptop connected to multiple network cables on a world map background, next to text ‘Switching It Up: Circuit vs Packet’
CCNA February 12, 2020

Circuit Switched vs Packet Switched

WAN devices discussed in the previous article are incomplete because other devices may be needed, depending on the chosen WAN access technology. WAN access technologies are either circuit-switched or packet-switched. Circuit Switched In a circuit-switched network, communications between end devices must be established before they can communicate. A circuit-switched network establishes a dedicated circuit (or...
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WAN Devices
CCNA February 8, 2020

WAN Devices

There are many types of specially designed WAN devices used in networks. These devices require expert skills for configuring and management. The important WAN devices are: Dialup modem Dialup Modems allow digital data to be sent over an analogue medium during the transmission and receiving of information. The dial-up modem is a legacy WAN technology....
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CCNA February 6, 2020

introduction to wan technologies – Exclusive

Wide-area networks (WANs) are used for different LANs together. It can connect different LANs within the city, country, or global region. Different technologies are used for WANs and LANs. Generally, the ISPs provide WANs routers and switches to accommodate different services. As a network administrator, it is your responsibility to research possible network devices for...
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CCNA February 3, 2020

Basic EIGRP Troubleshooting Commands – Exclusive Introduction

Due to the importance of EIGRP troubleshooting problems related to this protocol is an important ability for a network administrator. There are numerous commands that are important during EIGRP troubleshooting. The most used command for EIGRP troubleshooting is the “show ip eigrp neighbors”, “show ip route”, and “show ip protocols”. The commands can also be...
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