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Interview Questions

What is WiMAX | Worldwide Interoperability for Microwave Access | Next Generation 4G Wireless Technology

WiMAX, which stands for “Worldwide Interoperability for Microwave Access,” is a subset of standard, interoperable implementations within the IEEE 802.16 family of standards developed by the Institute of Electrical and Electronics Engineers (IEEE) 802.16 Working Group on Broadband Wireless Access Standards. WiMAX is the next-generation of wireless technology designed to enable pervasive, high-speed mobile Internet…

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Interview Questions

What is WEP

WEP, which could stand for either Wired Equivalent Privacy or Wireless Encryption Protocol, is a security scheme employed by the Institute of Electrical and Electronics Engineers (IEEE) for IEEE 802.11 wireless networks since the standard’s ratification in September 1999. WEP was part of the IEEE 802.11 standard and its amendments up until IEEE 802.11i, when…

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Interview Questions

What is WAP

WAP, which stands for wireless access point, is a device used for the formation of a wireless network through connection of wireless communication devices. It often connects to a wired network, enabling it to transmit data between wired and wireless devices. A larger, “roaming”-enabled network may be formed by linking together several WAPs. A WAP…

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Interview Questions

What is EDGE

EDGE, short for Enhanced Data rates for GSM Evolution, and also known as Enhanced GPRS (EGPRS), is a standard of technology in wireless telecommunications introduced in 2003 that increases data transmission rates and improves data transmission reliability in GSM-enabled mobile phones. It is usually classified as a second and three-quarters generation (2.75G) technology because although…

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Interview Questions

What is DoCoMo

Nippon Telegraph and Telephone (NTT) DoCoMo, Inc., where “DoCoMo” is shorthand for “Do Communications Over the Mobile Network” as well as a play on “dokomo,” the Japanese word for “everywhere,” is the most prominent wireless telecommunications operator in Japan, with more than 50 million subscribers. In August 1991, it was inaugurated as a subsidiary of…

Interview Questions

What is GPS

Global Positioning System (GPS), officially named NAVSTAR GPS, is a fully functional Global Navigation Satellite System (GNSS) developed by the United States Department of Defense and accessible as a public good to civilians. It enables a GPS receiver to determine its location, speed, direction of speed, and time, by making use of a constellation of…

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Interview Questions

What is Centrino Technology

Centrino is a platform-marketing initiative developed by the company Intel. It is a label used for a set of technologies for the central processing unit (CPU), mainboard chipset and wireless network interface, the usage of which, according to Intel, would provide broad wireless network interoperability, better performance and a longer battery life. The Intel Centrino…

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Interview Questions

What is IPTV?

IPTV is an acronym for Internet Protocol television through which internet television services are delivered using the architecture and networking methods of the Internet Protocol Suite over a packet-switched network infrastructure, e.g., the Internet and broadband Internet access networks, instead of being delivered through traditional radio frequency broadcast, satellite signal, and cable television (CATV) formats….

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Interview Questions

What is GPRS?

What is GPRS General packet radio service (GPRS) a standard for wireless communications in which a packet oriented mobile data service is available to users of the 2G ,GSM and 3G technology. GPRS data transfer is typically charged per megabyte of traffic transferred, while data communication via traditional circuit switching is billed per minute of…

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Interview Questions

What is the Difference Between GSM and CDMA?

GSM is an acronym for ‘Groupe Special Mobile’, which has now been changed to ‘Global System for Mobile Communication’. CDMA refers to ‘Code Division Multiple Access’. The working of GSM and CDMA is very different. How GSM works. GSM is a ‘cellular’ technology, that is, the entire coverage area is divided into various hexagonal shaped…

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Interview Questions

What is 2G, 3G and 4G?

2G is an acronym for second-generation wireless telephone technology. While its predecessor 1G, made use of analog radio signals, 2G uses digital radio signals. Based on what type of multiplexing (the process of combining multiple digital data streams into one signal) is employed, 2G technologies may be categorized by whether they are based on time…

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Interview Questions

What is 2G Technology | Second Generation Wireless Technology | Digital Radio Signals

2G refers to second generation wireless telecommunication technology. While its predecessor, 1G, made use of analog radio signals, 2G uses digital radio signals. Based on what type of multiplexing (the process of combining multiple digital data streams into one signal) is employed, 2G technologies may be categorized by whether they are based on time division…

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Interview Questions

What is 2.5G Technology | Second And A Half Generation

2.5G, which stands for “second and a half generation,” is a cellular wireless technology developed in between its predecessor, 2G, and its successor, 3G. “2.5G” is an informal term, invented solely for marketing purposes, unlike “2G” or “3G” which are officially defined standards based on those defined by the International Telecommunication (ITU). The term “2.5G”…

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Engineering Metrology

Terms in Engineering Measurements

Calibration: If a known input is given to the measurement system the output deviates from the given input, the corrections are made in the instrument and then the output is measured. This process is called “Calibration”. Sensitivity: Sensitivity is the ratio of change in the output signal to the change in the input signal. Readability:…