1. Briefly describe the application of IoT in the following areas:

a) Healthcare: It aids the doctors in monitoring their patients through smart devices, such as heart rate and blood pressure sensors. These devices send real-time data to the doctors for better treatment. It also enables the doctor to perform remote check-ups, saving time and helping during emergencies.

b) Hospitality: IoT is used in hotels to provide smart room control through automatic handling of lighting, temperature, and curtains for better guest comfort. It saves energy, too. Through the connected systems, staff is able to track room service requests fast.

c) Smart farming: IoT in farming helps in monitoring the moisture content of the soil, temperature, and crop conditions. Farmers get alerts on their phones to water or fertilize crops on time. This improves the production of crops and also saves water and other resources.

2. Briefly describe the usefulness of Blockchain technology in the following areas:

a) Supply chain management: At each step in the product's course, from the factory to the customer, blockchain keeps a record. This offers complete transparency and helps to identify at which point problems occur. It also reduces cheating and fake products in the market.

b) Voting: Blockchain technology can make online voting secure and transparent, with each vote appearing in a non-alterable digital ledger to prevent counterfeit votes and ensure that the election results are accurate.

c) Protection of copyrighted and intellectual property: The blockchain potentially holds records of ownership for songs, books, and inventions. That helps artists and inventors prove their work is original. It also prevents the illegal copying and misuse of digital content.

3. Describe any three benefits of cloud computing.

Answer: Cloud Computing enables users to store data online instead of on their computer. One advantage is that it allows for cost saving because people will not need expensive hardware. Secondly, it offers easy access, which means files can be opened anywhere there is internet access. Thirdly, it maintains automatic backup, which prevents loss in case computers get damaged or viruses wipe the hard drives.

4. Describe the use of voice recognition in security and criminal investigation.

Answer: The security systems use voice recognition to give access only to the registered user by matching his or her voice patterns. These help protect devices and buildings from unauthorized access. In cases of criminal investigations, it identifies the suspect by comparing his or her voice samples with those in recordings. This technology assists police in solving cases faster and more accurately.

5. Briefly describe how NLP helps in email filtering and language translation.

Answer: NLP studies the words and tone of messages to assist in email filtering. It separates, automatically, spam or harmful emails from important ones. In language translation, NLP reads and understands one language, then converts it, keeping the meaning intact, into another. This makes communication across the globe easier and faster.

6. Describe two applications of robots not mentioned in this unit.

Answer: Applications of robots range from space exploration, where robots, like rovers, collect data and take pictures on planets where humans cannot go, to disaster rescue operations in which the robots search for survivors in dangerous places, including collapsed buildings. These kinds of robots save lives and reduce human risk.