Computer Network Fundamentals

What is a network topology?

• The number of devices connected to a network

• Network topology is the layout or structure of a network.

• The speed of a network connection

• The type of cables used in a network

Name three common types of network topologies.

• Tree

• Mesh

• Hybrid

• Star, Bus, Ring

What is the purpose of a network protocol?

• To provide power to devices

• To increase the speed of a network

• The purpose of a network protocol is to enable communication and data exchange between devices in a network.

• To manage hardware resources in a computer

Explain the difference between TCP and UDP.

• TCP is reliable and connection-oriented, while UDP is faster and connectionless.

• TCP is connectionless and has lower latency than UDP.

• UDP guarantees delivery of packets, while TCP does not.

• TCP is faster and connection-oriented, while UDP is reliable and connectionless.

What does the OSI model represent?

• A physical model for hardware connections in three layers.

• A conceptual framework for network communication protocols in seven layers.

• A set of rules for internet browsing and email communication.

• A software application for managing network traffic.

What are the main layers of the OSI model?

• Physical, Data Link, Network, Transport, Session

• Physical, Data Link, Network, Transport, Application

• Physical, Data Link, Network, Transport, Session, Application

• Physical, Data Link, Network, Transport, Session, Presentation, Application

What is network security?

• Network security is the practice of protecting computer networks from unauthorized access, attacks, and damage.

• Network security is the practice of sharing data freely without restrictions.

• Network security refers to the physical layout of a network.

• Network security is the process of enhancing internet speed.

List three common threats to network security.

• Network monitoring tools

• Data encryption

• Malware, Phishing, Denial-of-Service (DoS) attacks

• Firewall configurations

What is a wireless network?

• A wired network that uses Ethernet cables for connections.

• A network that only allows devices to connect via Bluetooth.

• A network that requires a physical server for communication.

• A wireless network is a network that enables devices to connect and communicate without physical cables, using wireless signals.

What are the advantages of wireless networks?

• Higher security due to physical connections

• Limited device support

• Increased installation costs

• Advantages of wireless networks include flexibility, ease of installation, mobility, elimination of physical cables, and support for multiple devices.