Reviewer - Recent questions and answers in Technology Basics

Answered: What is the Internet and how does it work in simple terms?

Tue, 25 Nov 2025 12:52:10 +0000

The Internet is powered by a mix of undersea cables, satellite systems, fiber-optic lines and wireless networks. These help connect countries and continents. Websites are stored on powerful computers called servers. When you open Google or any other site, your request is routed through multiple networks until it reaches the correct server.

For basic technology exams, remember: Internet = global network, based on TCP/IP, uses servers and routers to transmit data.

Answered: What is a CPU and why is it called the brain of the computer?

Tue, 25 Nov 2025 12:22:30 +0000

Modern processors like Intel, AMD and ARM-based chips use multiple cores so the CPU can handle many tasks simultaneously. For example, a quad-core CPU can execute four instructions at the same time. This improves multitasking, gaming performance and overall speed. For basic computer knowledge exams, remember: CPU = main processor + executes instructions + measured in GHz + multi-core improves performance.

Answered: What is cloud storage and how does it keep your files safe?

Tue, 25 Nov 2025 11:42:35 +0000

Cloud storage also supports automatic backups. For example, your phone may upload your photos to Google Photos or iCloud, ensuring your data is safe even if your device gets lost or damaged. For Technology Basics GK, remember: Cloud = online storage, accessible anywhere, uses large data centers, provides backup and security.

Answered: What is an operating system and why do devices need it?

Tue, 25 Nov 2025 11:02:25 +0000

The OS provides key features like file management, user interface, system updates and security controls. It also manages multitasking by allowing several applications to run at the same time. For Technology Basics GK, remember: OS = system software + manages hardware + runs apps + ensures security.

Answered: What is Wi-Fi and how does it allow devices to connect wirelessly?

Tue, 25 Nov 2025 10:22:20 +0000

Different Wi-Fi bands like 2.4 GHz and 5 GHz offer varying speeds and range. Wi-Fi is secure when protected with strong passwords and encryption methods like WPA2 or WPA3. For Technology Basics GK, remember: Wi-Fi = wireless network + uses radio waves + connects devices without cables.