3.5.6 The Internet

• The Internet is controlled by a single authority.

  False
• The Internet uses a packet-switched network where data is broken into small packets
• Arrange the key characteristics of the Internet in a logical order:

  1️⃣ Decentralization

  2️⃣ Packet-switched

  3️⃣ Open standards
• A LAN has a global geographical scope.

  False
• Switches are used to connect devices within a single network
• Arrange the components of the Internet infrastructure in a logical order:

  1️⃣ Network Devices

  2️⃣ Communication Protocols

  3️⃣ Physical Connections
• An IP address is a unique numerical label assigned to each device
• What is the primary protocol for communication on the Internet?

  Internet Protocol
• One primary function of IP addresses is to uniquely identify each device within the network
• IPv4 uses a 32-bit address format.


  True
• Why are IP addresses crucial for data transmission on the Internet?

  Routing data packets
• IPv4 requires Network Address Translation (NAT) to share a single address
• What is the Internet defined as?

  Global network of interconnected networks
• What is the Internet defined as?

  Global network of interconnected computer networks
• What standardized protocols enable communication on the Internet?

  TCP/IP
• What is the primary role of routers in the Internet infrastructure?

  Route data packets
• Match the network device with its function:

  Routers ↔️ Route data packets

  Switches ↔️ Connect devices within a network

  Servers ↔️ Provide web hosting

  Modems ↔️ Convert digital signals
• What is the fundamental protocol that enables communication on the Internet?

  TCP/IP
• DNS translates domain names to IP addresses.


  True
• What is the primary role of IP addresses in data transmission on the Internet?

  Routing data packets
• What does an IP address indicate about a device?

  Location on the network
• IPv6 uses a 128-bit address format.
• IPv4 supports approximately 4.3 billion unique addresses.


  True
• Which IP version includes built-in security features like IPsec?

  IPv6
• The Internet is decentralized, meaning no single authority controls the entire network.
• A local area network (LAN) has a global geographical scope.

  False
• The Internet uses standardized protocols like TCP/IP to enable communication.
• The Internet is more secure than a LAN due to its open standards.

  False
• The Domain Name System (DNS) translates domain names to IP addresses.
• What is the primary function of the Domain Name System (DNS)?

  Translate domain names to IP addresses
• Domain names are numerical and difficult for humans to remember.

  False
• What is the purpose of domain names in the Internet?

  Human-readable identification
• Domain names are easier for humans to remember than IP addresses.


  True
• What do routers examine to route data packets between networks?

  IP addresses
• Routers use the IP protocol, while gateways use multiple protocols
• Steps involved in data transmission using routers and gateways

  1️⃣ Data originates from a device

  2️⃣ Router examines destination IP address

  3️⃣ Router optimizes data path

  4️⃣ Gateway translates protocols if necessary

  5️⃣ Data reaches destination network
• Where are routers primarily used?

  Within a single network
• The Internet is a global network of interconnected computer networks
• What does it mean for the Internet to be decentralized?

  No single authority controls it
• Data on the Internet is broken into packets and routed independently.


  True