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Choose the correct answer: i. The second generation of mobile communication phones was a) digital b) analog c) semi analog d) radio frequency ii. Enhance data rate for GSM evolution (EDGE) is a of 384kbps. a) 1 G b) 2.5 G c) 3.5 G d) 4 G system, with a data rate iii. This is due to reflection of radio signals by solid objects, which results in signals being received along multiple paths. a) Infrared systems b) Carrier sense multiple access c) Multipath fading d) Orthogonal frequency division multiplexing

Choose the correct answer: i. The second generation of mobile communication phones was a) digital b) analog c) semi analog d) radio frequency ii. Enhance data rate for GSM evolution (EDGE) is a of 384kbps. a) 1 G b) 2.5 G c) 3.5 G d) 4 G system, with a data rate iii. This is due to reflection of radio signals by solid objects, which results in signals being received along multiple paths. a) Infrared systems b) Carrier sense multiple access c) Multipath fading d) Orthogonal frequency division multiplexing

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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1. Choose the correct answer: i. The second generation of mobile communication phones was a) digital b) analog c) semi analog d) radio frequency ii. Enhance data rate for GSM evolution (EDGE) is a of 384kbps. a) 1 G b) 2.5 G c) 3.5 G d) 4 G iii. This is due to reflection of radio signals by solid objects, which results in signals being received along multiple paths. a) Infrared systems b) Carrier sense multiple access c) Multipath fading d) Orthogonal frequency division multiplexing iv. Which of the following is the IEEE standard for Wi Max? a) 802.3 b) 802.11 c) 802.15 d) 802.16 vii. has a data rate of 23.5 mbps, with coverage of 50 m and low mobility of <10 m/s. a) HiperLAN/1 b) HiperLAN/2 c) IrDA d) Bluetooth vi. Wireless communication suffers from frequent disconnection and slow speeds, as compared with wired communication due to system, with a data rate a) Ubiquitous computing b) Wireless connectivity c) Weak connectivity d) Pervasive Computing. cellular systems were the first generation of mobile telephone communication systems. a) Analog b) Digital c) Semi analog d) Radio frequency viii. MAC sub layer of 802.11 supports two modes of operation. e) Association & Disassociation f) Distributed & Point Coordination Function g) IEEE 802.3 & IEEE 802.16 h) Infrared System & HyperLAN
Transcribed Image Text:1. Choose the correct answer: i. The second generation of mobile communication phones was a) digital b) analog c) semi analog d) radio frequency ii. Enhance data rate for GSM evolution (EDGE) is a of 384kbps. a) 1 G b) 2.5 G c) 3.5 G d) 4 G iii. This is due to reflection of radio signals by solid objects, which results in signals being received along multiple paths. a) Infrared systems b) Carrier sense multiple access c) Multipath fading d) Orthogonal frequency division multiplexing iv. Which of the following is the IEEE standard for Wi Max? a) 802.3 b) 802.11 c) 802.15 d) 802.16 vii. has a data rate of 23.5 mbps, with coverage of 50 m and low mobility of <10 m/s. a) HiperLAN/1 b) HiperLAN/2 c) IrDA d) Bluetooth vi. Wireless communication suffers from frequent disconnection and slow speeds, as compared with wired communication due to system, with a data rate a) Ubiquitous computing b) Wireless connectivity c) Weak connectivity d) Pervasive Computing. cellular systems were the first generation of mobile telephone communication systems. a) Analog b) Digital c) Semi analog d) Radio frequency viii. MAC sub layer of 802.11 supports two modes of operation. e) Association & Disassociation f) Distributed & Point Coordination Function g) IEEE 802.3 & IEEE 802.16 h) Infrared System & HyperLAN
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