Mobile Communications

What is a wireless network?

• A wireless network is a type of computer network that uses satellite data connections for connecting network nodes.

• A wireless network is a type of computer network that uses wired data connections for connecting network nodes.

• A wireless network is a type of computer network that uses wireless data connections for connecting network nodes.

• A wireless network is a type of computer network that uses optical fiber data connections for connecting network nodes.

Explain the key features of 5G technology.

• Limited compatibility with existing devices

• Decreased network coverage

• Higher data rates, lower latency, increased capacity, improved reliability, support for massive IoT deployments

• Faster battery consumption

Why is mobile security important in today's digital age?

• Mobile security is unnecessary and does not provide any benefits.

• Mobile security is crucial to protect personal and financial information from cyber attacks and ensure privacy in an increasingly connected world.

• Mobile security only applies to older devices and is not relevant for newer technology.

• Mobile security is a myth created by companies to sell unnecessary products.

Differentiate between 4G and 5G cellular networks.

• 5G has faster speeds, lower latency, and increased capacity compared to 4G.

• 4G has more capacity than 5G

• 4G has faster speeds than 5G

• 5G has higher latency than 4G

What are the main challenges faced in implementing 5G technology?

• Infrastructure costs, spectrum availability, security concerns, interoperability issues, regulatory hurdles

• Lack of public interest

• Limited device compatibility

• Insufficient research and development

How does encryption play a role in mobile security?

• Encryption is only effective for securing physical access to mobile devices

• Encryption makes mobile devices run slower due to the processing power required

• Encryption secures data by converting it into a code that can only be deciphered with the correct key, preventing unauthorized access to sensitive information.

• Encryption increases the risk of data breaches on mobile devices

Discuss the concept of network slicing in 5G technology.

• Network slicing in 5G technology refers to the partitioning of a single physical network into multiple virtual networks to meet diverse service requirements.

• Network slicing in 5G technology refers to the physical separation of networks for security purposes.

• Network slicing in 5G technology involves combining all services into a single network for efficiency.

• Network slicing in 5G technology is only applicable to 4G networks.

What are the advantages of using cellular networks for mobile communication?

• Limited coverage and connectivity

• Inconsistent data transfer speeds

• Advantages of using cellular networks for mobile communication include wider coverage, better reliability, seamless handover between cells, support for high-speed data transfer, and mobility for users.

• Restricted mobility for users

Explain the concept of beamforming in wireless networks.

• Beamforming is a process of encrypting wireless signals

• Beamforming in wireless networks is a technique used to focus a wireless signal towards a specific direction, rather than broadcasting it in all directions.

• Beamforming is a technique used to scatter a wireless signal in all directions

• Beamforming is a method to reduce the speed of wireless signals

How can users protect their mobile devices from cyber threats?

• Sharing sensitive information with unknown sources

• Follow best practices such as updating software, using strong passwords, enabling two-factor authentication, being cautious of suspicious links, avoiding public Wi-Fi, installing security software, and backing up data.

• Clicking on every link received via email or text message

• Leaving devices unlocked in public places