CCENT Chapter 2 Terms

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  1. A set of networking standards or conceptual models.
    OSI Reference Model or Open Systems Interconnection Model
  2. ____________ is the process of adding a header and trailer to a piece of data.
  3. ______________ is the Application layer protocol that any of our e-mail programs rely on to send and receive messages.
    SMTP or Simple Mail Transport Protocol
  4. A __________ is control information found at the beginning of a communication packet (that provides information about the packet such as the computer of orgin, intended recipient, packet size, and destination port.)
  5. A _______ is a logical grouping information sent as a Data Link Layer unit over a transmission medium.
  6. A ________ is a software or hardware component that restricts access between a protected network and the Internet, or between other sets of networks, to block unwanted use or attacks.
  7. A __________ is a device that provides access between two or more networks. (Gateways are typically used to connect dissimilar networks.)
  8. A _________ is the authority to represent something else (IE. proxy server or IP address)
  9. A ________ is information that is delivered as a unit among peer entities of a network and that may contain control information, such as address information, or user data. 
    The Layer 1 (Physical Layer) PDU is the bit or, more generally, symbol (can also be seen as "stream")
    The Layer 2 (Data Link Layer) PDU is the frame.
    The Layer 3 (Network Layer) PDU is the packet.
    The Layer 4 (Transport Layer) PDU is the segment for TCP or the datagram for UDP.
    The Layer 5-6-7 (Application Layer) PDU is the data, which can be clear text, encrypted, or compressed
  10. A standard enabling a wide variety of network devices to connect and exchange data.
    TCP or Transmission Control Protocol
  11. Detailed specifications that control how data packets are formatted and how they move from one networked computer to another.
    IP or Internet Protocol
  12. A widely used networking standard that enables a variety of diverse systems to connect and exchange data.
  13. Documents that describe standards used or proposed for the Internet. Each is identified by a number.
    RFC or Request for Comment
  14. A network system of servers that translates numeric Internet Protocol (IP) addresses into human-friendly hierarchical Internet addresses, and vice versa.
    DNS or Domain Name System
  15. A standard proposed in RFC 1541 for transferring network configuration information from a central server to devices as the devices boot up. (this data typically includes a machine's IP address, which the server can change and allocate automatically under DHCP.)
    DHCP or Dynamic Host Configuration Protocol
  16. The most common protocol for copying files over the Internet.
    FTP or File Transfer Protocol
  17. Trival File Transfer Protocol
  18. Secure File Transfer Protocol
  19. A cryptographic network protocol for secure data communication between two network devices. (All communication is encrypted. It is the secure replacement for Telnet.)
  20. a protocol for receiving e-mail by downloading it to your computer from a mailbox on the server of an Internet service provider.
    POP3 or Post Office Protocol 3
  21. a standard protocol for accessing e-mail from your local server.
    IMAP or Internet Message Access Protocol
  22. a popular protocol for network management. It is used for collecting information from, and configuring, network devices, such as servers, printers, hubs, switches, and routers on an Internet Protocol (IP) network
    SNMP or Simple Network Management Protocol
  23. a set of hardware and/or software tools that allow an IT professional to supervise the individual components of a network within a larger network management framework.
    NMS or Network Management System
  24. a formal description of a set of network objects that can be managed using the Simple Network Management Protocol (SNMP). The format of the MIB is defined as part of the SNMP.
    MIB or Management Information Base
  25. an application protocol for distributed, collaborative, hypermedia information systems. (Hypertext is structured text that uses logical links (hyperlinks) between nodes containing text.)
    HTTP or Hypertext Transfer Protocol
  26. ________ is the use of Secure Socket Layer (SSL) or Transport Layer Security (TLS) as a sublayer under regular HTTP application layering. (HTTPS encrypts and decrypts user page requests as well as the pages that are returned by the Web server.)
    HTTPS or (HTTP over SSL or HTTP Secure)
  27. a standardized system for tagging text files to achieve font, color, graphic, and hyperlink effects on World Wide Web pages.
    HTML or Hypertext Markup Language
  28. 37
    NTP or Network Time Protocol
  29. 38
    UDP or User Datagram Protocol
  30. 39
    TCP Handshake
  31. 40
  32. 41
  33. 42
  34. 43
    ICMP or Internet Control Message Protocol
  35. 44
  36. 45
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CCENT Chapter 2 Terms
CCENT Chapter 2 Terms
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