Month: February 2020

VSAT
CCNA February 27, 2020

What is VSAT?

VSAT is the abbreviation of Very small aperture terminal. It is important WAN technology for both home users and organizations; they needed connectivity in remote areas where there is no possibility of fiber optic, copper cable and microwave.  It is the solution that creates a private WAN using satellite communications. A VSAT contains is a […]
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MPLS
CCNA February 26, 2020

MPLS

MPLS is the abbreviation of Multiprotocol Label Switching. It is a WAN protocol that sends data from one router to another router, based on short path labels rather than IP network addresses. It was created from 1994 to 1999 as an alternative to Internet Protocol (IP) routing. It was the more effective alternative to multilayer switching […]
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CCNA February 26, 2020

Ethernet WAN

Ethernet was initially considered not suitable as a WAN access technology because of the maximum cable length supported was only up to a kilometre. However, newer Ethernet standards with fiber optic have made Ethernet an important WAN option. For example, the IEEE 1000BASE-ZX standard supports up to 70 km of distance. Ethernet WAN provides high-bandwidth […]
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ATM
CCNA February 24, 2020

What is ATM?

ATM is the abbreviation of Asynchronous Transfer Mode. It is using time-division multiplexing (TDM) for data communications. It is capable of transferring voice, video, and data through private and public networks. ATM is working on a cell-based architecture in place of frame-based architecture. The size of the Asynchronous Transfer Mode cell is fixed to 53 […]
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frame relay
CCNA February 23, 2020

What is Frame Relay? Exclusive Introduction

Frame relay is a packet-switching telecommunication service designed for interconnecting enterprise LANs. Being a student of networking, it is important that you know about all the emerging WAN technologies. To stay up-to-date with emerging and developing technologies, you may know the following alternate options available for WAN connectivity. Frame Relay Broadband DSL Broadband cable modem […]
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ISDN
CCNA February 22, 2020

ISDN

ISDN stands for Integrated Services Digital Network. It is a circuit-switched technology using the local loop of a PSTN to carry digital signals. It can transmit both data and voice over a digital line. It is a set of communication standards, which can transmit data, voice, and signalling. ISDN connections provide better speeds and higher […]
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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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