1.3.3 Networks

• Networks improve communication by enabling real-time collaboration between devices.


  True
• WANs can be owned privately or publicly.


  True
• What is the ownership of a LAN?

  Privately owned
• A Metropolitan Area Network (MAN) can be privately or publicly owned.


  True
• Match the network topology with its description:

  Bus ↔️ All devices connected to a single cable

  Ring ↔️ Devices connected in a circular fashion

  Star ↔️ Devices connected to a central hub

  Mesh ↔️ Devices connected to multiple other devices
• What factors influence the choice of network topology?

  Cost, reliability, scalability
• A network allows devices to communicate and share resources.


  True
• In a bus topology, all devices are connected to a single cable or backbone
• Arrange the four layers of the TCP/IP model in their correct order.

  1️⃣ Application Layer

  2️⃣ Transport Layer

  3️⃣ Network Layer

  4️⃣ Data Link Layer
• Match the network threat with its corresponding security measure.

  Malware ↔️ Anti-malware software, firewall

  Phishing ↔️ User education, email filtering

  Ransomware ↔️ Regular backups, anti-malware software

  Man-in-the-middle attacks ↔️ Encryption (e.g., HTTPS), VPN

  Denial-of-service attacks ↔️ DDoS protection services, traffic filtering
• Networks allow users to access files, applications, and devices across the network
• What is the geographical coverage of a LAN?

  Small, confined area
• WANs span large, geographically dispersed areas like across countries.

  True
• A Local Area Network (LAN) is typically privately owned.
• What does network topology refer to?

  Physical and logical arrangement
• The mesh topology provides high reliability because there is no single point of failure.
• Which protocols are used in the Transport Layer to ensure reliable data delivery?

  TCP, UDP
• Network topology refers to the physical and logical arrangement of devices in a network
• A mesh topology is highly reliable because it has redundant paths.


  True
• Match the TCP/IP layer with its primary function.

  Application Layer ↔️ Handles communication between applications

  Transport Layer ↔️ Ensures reliable data delivery

  Network Layer ↔️ Handles addressing and routing

  Data Link Layer ↔️ Transports data across physical network
• Encryption is a key measure against man-in-the-middle attacks
• What is a network defined as?

  Interconnected devices sharing resources
• Networks are classified based on their geographical coverage
• LANs are typically found within a small, confined area
• What type of network covers a small, confined area like an office or school?

  LAN
• Wide Area Networks (WANs) can be privately or publicly owned.
• The star topology is dependent on the central hub for data transmission.


  True
• The Application Layer of TCP/IP uses protocols like HTTP, FTP, and SMTP.
• The Internet is a global network that is publicly owned and managed.
• In a star topology, all devices are connected to a central hub or switch
• The Data Link Layer in the TCP/IP model transports data across the physical network.


  True
• How do networks increase efficiency?

  Distributing tasks across devices
• Which network type covers a city or metropolitan area?

  Metropolitan Area Network (MAN)
• Match the network type with its key characteristic:

  Local Area Network (LAN) ↔️ Small geographical coverage

  Metropolitan Area Network (MAN) ↔️ City-wide coverage

  Wide Area Network (WAN) ↔️ Large, dispersed area
• What geographical area does a Wide Area Network (WAN) span?

  Large, dispersed area
• What is a disadvantage of the bus topology?

  Single point of failure
• What is the primary function of network protocols?

  Govern data exchange
• What are three benefits of using a network?

  Data sharing, improved communication, increased efficiency
• A ring topology has no single point of failure.


  True
• The Network Layer in the TCP/IP model handles addressing and routing