Computer Network Concepts Quiz

Questions and Answers

What is the primary benefit of a computer network?

It eliminates the need for physical connections.

It increases the power of individual workstations.

It reduces the need for software licenses.

It allows for communication and resource sharing among devices. (correct)

Which type of network is confined to a relatively small area like a school or building?

Personal Area Network (PAN)

Local Area Network (LAN) (correct)

Campus Area Network (CAN)

Metropolitan Area Network (MAN)

What distinguishes a Campus Area Network (CAN) from a Local Area Network (LAN)?

A CAN can only be used in educational institutions.

A CAN connects multiple LANs within a limited geographical area. (correct)

A CAN allows for global communications.

A CAN requires wireless technology for connectivity.

What function do workstations perform in a Local Area Network (LAN)?

They connect to the file server and can share software. Signup and view all the answers

What defines a Metropolitan Area Network (MAN)?

It connects two or more LANs in the same geographic area. Signup and view all the answers

Which of the following is NOT a type of computer network mentioned?

Wide Area Network (WAN) Signup and view all the answers

What is a common use of email in a network environment?

To send and receive messages over the internet. Signup and view all the answers

What type of network is primarily used for communication among devices in close proximity to an individual?

Personal Area Network (PAN) Signup and view all the answers

What defines a Wide Area Network (WAN)?

A network that spans across larger geographical areas such as cities and countries. Signup and view all the answers

Which type of twisted-pair cable is most commonly used in networking?

Unshielded Twisted Pair (UTP) Signup and view all the answers

What is a primary disadvantage of using Shielded Twisted Pair (STP) cables compared to Unshielded Twisted Pair (UTP)?

STP is generally more expensive and difficult to install. Signup and view all the answers

What material is used to transmit data in fiber-optic cables?

Plastic or glass Signup and view all the answers

Which type of cable has an advantage in reducing noise from outside interference?

Shielded Twisted Pair (STP) Signup and view all the answers

What happens if the metallic shielding of a Shielded Twisted Pair (STP) cable is improperly grounded?

It can act like an antenna, picking up unwanted signals. Signup and view all the answers

What is a key feature of coaxial cable?

It is composed of a copper core surrounded by heavy shielding. Signup and view all the answers

What is a main purpose of using twisted-pair cables?

To reduce crosstalk and electrical noise. Signup and view all the answers

Study Notes

Computer Network Concepts

A computer network consists of interconnected computers and devices that allow communication and resource sharing.
Key benefits include reduced hardware costs, sharing of files and applications, electronic mail services, collaborative work on files, and remote troubleshooting assistance.

Types of Computer Networks

Personal Area Network (PAN):
- Connects devices within close proximity (meters), such as smartphones and tablets.
Local Area Network (LAN):
- Confined to a limited geographic area like a school or office building.
- Requires a file server to store network control software and shared applications.
- Connected computers are referred to as workstations.
Campus Area Network (CAN):
- Interconnects multiple LANs within a defined campus area, often owned by a university or enterprise.
Metropolitan Area Network (MAN):
- A hybrid network connecting multiple LANs within the same city or municipality.
Wide Area Network (WAN):
- Covers vast areas, often crossing metropolitan, regional, or national boundaries.
- Uses dedicated transoceanic cabling or satellite uplinks for connectivity.

Network Materials

Cables are traditionally used to connect devices, with various types available based on specific needs.
Common networking cables include coaxial, twisted-pair, and fiber-optic materials, differing in bandwidth, size, and cost.

Common Network Cables

Twisted Pair Cable:
- Used for telephone communications and Ethernet networks.
- Comprises twisted copper wire pairs to minimize crosstalk.
- Unshielded Twisted Pair (UTP):
  - Contains 2-4 pairs of wires, offering basic noise cancellation.
  - Most commonly used cable type.
- Shielded Twisted Pair (STP):
  - Each wire pair is wrapped in metallic foil for better shielding.
  - Reduces internal and external electrical noise but is more costly and difficult to install.
Coaxial Cable:
- Features a copper core surrounded by a thick shield.
- Primarily connects computers to a wider network.
- Requires specific connectors (BNC or Bayonet Neill-Concelman).

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Description

This quiz explores the fundamental concepts of computer networks, including the definition, benefits of sharing information, and resource allocation. Test your understanding of how networked computers communicate and share resources effectively.