Introduction to Computers Quiz

A computer is an _____________device

__________are raw facts

Mention several i/p devices.

Mention several o/p devices.

Mention several Storage devices.

Describe in brief the Generation of Computers.

Describe in brief several types of computers.

• Laptops – Notebook computers as their name implies, approximate the shape of an 8.5 by 11 inch notebook and easily fit inside a briefcase. Several notebook systems are designed to be plugged into a docking station, which may include a large monitor, a full size keyboard and mouse or other devices.

• Tablet PCs – newest development in portable, full featured computers offering all the functionality of a notebook PC & are lighter and can accept input from a special pen called a stylus or digital pen that is used to tap or write directly on the screen.

• PDA [Personal Digital Assistant] – handheld personal computers small enough to fit in your hand. Many PDAs let the user access the Internet through a wireless connection.

• Workstation – a specialized, single-user computer that typically has more power and features than a standard desktop PC popular among scientists, engineers and animators who need a system with greater than average speed and the power to perform sophisticated tasks.

• Desktop - most common type of personal computer that is designed to sit on or under a desk or table commonly used in schools, offices and home.

What is a Network? What are its types?

• WAN [Wide Area Network]: spans a large geographical area such as a state, province o country. The world’s most popular WAN is the Internet.

• CAN [Campus Area Network]: spans multiple LANs but smaller than a MAN, such as on a university or college campus.

• MAN [Metropolitan Area Network]: spans a physical area larger than a LAN but smaller than a WAN, such as a city.

• LAN [Local Area Network]: supplies networking capability to a group of computers in close proximity to each other such as in an office building, a school or a room. It is useful for sharing resources like files, printers, games or other applications.

• A Network is defined as group of computers connected together to share the resources (hardware and software) with two principle benefits: the ability to communicate and the ability to share.

What is meant by network topology? What are its types?

• Network Topology refers to the arrangement or physical layout of computers, cables and other components on the network.

• Types of Networks: Basic, Advanced.

• Basic: LAN, WAN.

• Advanced: MAN, CAN, PAN, SAN, HAN, WLAN.

• Network Topologies: Bus, Ring, Star, Mesh, Hybrid.

State the advantages and disadvantages of computer networks.

• Advantages: a. File Sharing, b. Resource Sharing, c. Increased Storage Capacity, d. Increased Cost Efficiency.

• Disadvantages: a. Security Issues, b. Rapid Spread of Computer Viruses, c. Expensive Setup, d. Dependency on Main File Server.