Computer Knowledge

Mobile Telecommunications Networks

2,143 Questions

Mobile telecommunications networks focus on cellular technologies including 5G architecture and GSM components. Key areas of study include network function virtualization, software defined networking, and beamforming. This topic is crucial for technical exams testing computer and networking awareness.

5G architecture componentsNetwork function virtualizationMassive MIMO technologyGSM network registersBeamforming and CSI

Mobile Telecommunications Networks Questions

Multiple choice

Ku-Band is most prominently used for

  1. broadcast services
  2. wi-fi devices

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ku-band is primarily used for satellite communications, most notably for fixed and broadcast services, and for specific applications such as NASA's Tracking Data Relay Satellite used for both space shuttle and ISS communications.

Multiple choice

In a WLAN network, why should wireless access points be implemented with each access point using a different channel?

  1. To keep users segregated on separate subnets

  2. To control the amount of bandwidth that is utilized

  3. To keep signals from interfering with each other

  4. To keep traffic secure
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Adjacent wireless access points operating on the same radio frequency cause co-channel interference, degrading performance and throughput. Using different non-overlapping channels (1, 6, 11 in 2.4GHz) separates RF domains and prevents signal overlap between neighboring APs.

Multiple choice

Which major problem does CSMA/CA overcome in wireless networks?

  1. bandwidth saturation

  2. privacy concerns

  3. media contention

  4. device interoperability
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) was developed specifically for wireless networks to overcome the media contention problem. In wireless environments, devices cannot detect collisions during transmission (hidden node problem), so CSMA/CA uses collision avoidance through random backoff timers and RTS/CTS mechanisms. It does not directly address bandwidth saturation, privacy, or device interoperability.

Multiple choice

Which of the following is a technology used in digital cellular telephone communication that divides each cellular channel into three time slots in order to increase the amount of data that can be carried?

  1. ITU

  2. CSD

  3. TDMA

  4. IS-95

  5. OFDM
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is a technology used in digital cellular telephone communication that divides each cellular channel into three time slots in order to increase the amount of data that can be carried.

Multiple choice

Which of the following services in GSM network refers to a method in which a message whose maximum length is 93 characters can be broadcasted to all users who are in a particular geographical region?

  1. DTMF

  2. SMS

  3. Facsimile group III

  4. Cell broadcast

  5. Voice mail
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This service in GSM network refers to a method in which a message whose maximum length is 93 characters can be broadcasted to all users who are in particular geographical region.

Multiple choice

Which of the following layers in layered architecture of the GSM protocol specifies the type of transmission media used for communicating data between different components of the same system or same unit of different systems?

  1. Layer 1

  2. Layer 2

  3. Layer 3

  4. Layer 4

  5. Layer 5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This layer in layered architecture of the GSM protocol specifies the type of transmission media used for communicating data between different components of the same system or same unit of different systems.