5G technology uses which frequency ranges?

Here are the answers to the questions:

Question 15: 5G technology uses which frequency ranges?
5G technology is designed to operate across a broad spectrum of frequencies to provide diverse services, including low-band for wide coverage, mid-band for a balance of speed and coverage, and high-band (mmWave) for very high speeds over short distances.
The correct option is:

b) Low, mid, and high-band spectrum

$$\boxed{\text{b}}$$

Question 16: Blockchain is primarily known for:
Blockchain is fundamentally a decentralized, distributed ledger technology that records transactions across a network of computers, ensuring transparency and immutability.
The correct option is:

b) Decentralized ledger technology

$$\boxed{\text{b}}$$

Question 17: Which cryptocurrency introduced block chain technology?
Bitcoin was the first cryptocurrency to successfully implement blockchain technology, as described in its whitepaper by Satoshi Nakamoto.
The correct option is:

b) Bitcoin

$$\boxed{\text{b}}$$

Question 18: Smart contracts are associated with:
Smart contracts are self-executing contracts with the terms of the agreement directly written into code. They were popularized and extensively developed on the Ethereum blockchain.
The correct option is:

a) Ethereum block chain

$$\boxed{\text{a}}$$

Question 19: VR technology requires:
Virtual Reality (VR) technology typically requires a head-mounted display (HMD) to fully immerse the user in a simulated, virtual environment.
The correct option is:

a) Head-mounted displays

$$\boxed{\text{a}}$$

Question 20: Which industry uses VR for training simulations?
Virtual Reality is widely adopted in various industries for training simulations, with healthcare being a prominent example where it's used for surgical training, medical procedures, and patient care simulations.
The correct option is:

a) Healthcare

$$\boxed{\text{a}}$$

Question 21: VR differs from AR because:
Virtual Reality (VR) creates a completely artificial environment that replaces the real world, fully immersing the user. Augmented Reality (AR), on the other hand, overlays digital information onto the real-world view.
The correct option is:

a) VR immerses users in a fully virtual environment

$$\boxed{\text{a}}$$