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The Wireless Revolution: Cellular Systems and Standards Quiz

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Questions and Answers

What is the fundamental difference between GSM and CDMA cellular systems?

GSM is more widely used globally compared to CDMA
GSM requires SIM cards while CDMA does not
GSM uses TDMA while CDMA uses code division multiple access (correct)
GSM has better roaming options internationally compared to CDMA

Which of the following is a key advantage of 4G networks over 3G networks?

4G offers higher transmission speeds of up to 100 Mbps
4G is entirely packet-switched compared to 3G
4G provides better quality streaming video compared to 3G
All of the above (correct)

Which cellular standard is more widely used globally?

Both GSM and CDMA are equally widely used globally
CDMA
GSM (correct)
It depends on the specific region

What is the typical range of transmission speeds for 3G networks?

144 Kbps to 2 Mbps (D) Signup and view all the answers

Which of the following is a key difference between GSM and CDMA cellular systems?

GSM uses SIM cards while CDMA does not (A) Signup and view all the answers

Which of the following is true about Wi-Fi (802.11) technology?

It is used for wireless LAN and wireless internet access via access points (A) Signup and view all the answers

What is the main purpose of Bluetooth technology?

To create small Personal Area Networks (PAN) for linking up to 8 devices (B) Signup and view all the answers

What is the main characteristic of WiMax (IEEE Standard 802.16)?

It provides a wireless access range of up to 31 miles and transmission speeds up to 75 Mbps (B) Signup and view all the answers

What is the primary function of RFID (Radio Frequency Identification) technology?

To identify and track items using tags and readers that transmit data over a network (B) Signup and view all the answers

What is the main difference between active and passive RFID tags?

Active RFID tags have batteries and can be rewritten, while passive tags are powered by radio frequency energy (A) Signup and view all the answers

What is the primary function of wireless sensor networks (WSNs)?

To provide measurements of environmental conditions over large spaces using interconnected wireless devices (B) Signup and view all the answers

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