# Quiz 1: Wcdma For Umts Hspa Evolution And Lte: Chapter 1 Introduction To Umts

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By Dr. Munther Gdeisat

• 1.

### Using the 2100 MHz reduce the cell size by ___________  compared with 900 MHz.

• A.

Two times

• B.

Three times

• C.

Four times

• D.

Five times

B. Three times
Explanation
Using the 2100 MHz frequency reduces the cell size by three times compared with using the 900 MHz frequency. This means that with the higher frequency, the coverage area of each cell is smaller, allowing for more cells to be deployed in a given area. This can result in improved capacity and higher data speeds for mobile users.

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• 2.

### The latency in WCDMA is 200 ms and it is reduced to below 100 ms in HSPA.

• A.

True

• B.

False

A. True
Explanation
The explanation for the given correct answer is that WCDMA has a latency of 200 ms, which means there is a delay in transmitting data. However, in HSPA, the latency is reduced to below 100 ms, indicating a faster transmission of data. Therefore, the statement that the latency is reduced to below 100 ms in HSPA is true.

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• 3.

### HSPA is fully packet-based system; whereas WCDMA is circuit-switched and packet-based system.

• A.

True

• B.

False

A. True
Explanation
HSPA (High-Speed Packet Access) is indeed a fully packet-based system, meaning that it transmits data in small packets over the network. On the other hand, WCDMA (Wideband Code Division Multiple Access) is a system that supports both circuit-switched and packet-based communication. This means that while WCDMA can transmit data in packets, it also has the capability to establish dedicated circuits for voice calls. Therefore, the statement that HSPA is fully packet-based and WCDMA is circuit-switched and packet-based is correct.

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• 4.

### A single product that is able to support multiple radio standards simultaneously is called as

• A.

• B.

• C.

Both names above

C. Both names above
Explanation
The correct answer is both names above. Single RAN (Radio Access Network) refers to a network infrastructure that supports multiple radio standards, allowing for flexibility and cost-efficiency. Software Defined Radio (SDR) is a technology that enables a single hardware platform to support multiple radio standards through software configurations. Therefore, both terms describe a single product that can support multiple radio standards simultaneously.

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• 5.

### Running just one base station with up to three different radio standards costs more than running three separate base stations with three different radio standards.

• A.

True

• B.

False

B. False
Explanation
Running just one base station with up to three different radio standards does not necessarily cost more than running three separate base stations with three different radio standards. The cost of running a base station depends on various factors such as equipment and maintenance costs. It is possible that running one base station with multiple standards could be more cost-effective due to shared resources and reduced infrastructure requirements. Therefore, the statement is not necessarily true and the correct answer is False.

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• Current Version
• Mar 20, 2023
Quiz Edited by
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• Jan 20, 2014
Quiz Created by
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