Networking Basics

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Across
  1. 4. An internet service that translates domain names into IP addresses. Because domain names are alphabetical, they are easier to remember. The internet, however, is really based on IP addresses. Every time you use a domain name, a DNS service must translate the name into the corresponding IP address. For example, the domain name www.example.com might translate into 198.105.232.4.
  2. 7. One group of the 3-digit characters in an IP address. In the example above, 172 is the first octet, and 10 is the fourth octet.
  3. 8. A network that connects LANs. The biggest ___ in existence is the internet.
  4. 10. A _______ is a group or system of interconnected devices that can communicate with each other
  5. 11. The most widely used LAN architecture & technology that supports data transfers using layer 1 & 2 of the OSI networking Model using a packet and frame transmission model. _______ allows for data transfers that are always under development for faster speeds.  Currently, 1 Gigabit or 1 billion bits per second and 10 GbE (10 Gigabit Ethernet) are the maximum transmission speeds.
  6. 13. A basic network device that connects multiple network nodes such as computers & printers together. A network ___ has no intelligence and has been replaced by network switches.
  7. 14. A system designed to prevent unauthorized access to or from a private network. _______ can be implemented in both hardware and software, or a combination of both.
  8. 16. A protocol for assigning dynamic IP addresses on a network. Example: When you plug into the network, the host assigns you an available IP address.
Down
  1. 1. A network that is constructed by using public wires (the internet) to connect nodes. These systems use encryption and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.
  2. 2. A computer network that spans a small area, usually a building or company. Most LANs connect PCs and printers. Each node (PC) has its own CPU which executes programs but is able to access data & devices anywhere on the LAN. Most types of LANs are Ethernet.
  3. 3. A device that forwards data packets along networks. A router is connected to at least two networks, commonly two LANs or WANs, or a LAN and its ISP’s network. Routers are located at gateways, the places where two or more networks connect. The IP address of the router is referred to as the “Default Gateway”. The Router is the endpoint of the VPN that connects the dealership to the Dealertrack DMS Servers.
  4. 5. A device that joins segments of a LAN that uses packet switching to receive, process and forward data to the destination device. There are two versions, unmanaged and managed. Managed provides the ability to have more control over directing the packets of data. Unmanaged only connects LAN devices.
  5. 6. A piece of a message transmitted over a ______-switching network. It contains the destination address, in addition to the data.
  6. 9. Directs traffic from the local network to the cable or DSL modem, which sends it to the internet service provider (ISP).
  7. 12. creates a secure connection between two devices or applications on a network. It establishes trust and authenticates the other party before sharing data or credentials.
  8. 15. A company that provides access to the internet for a monthly fee.