Network+ Chapter 10 Definitions

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Author:
davecowman
ID:
202107
Filename:
Network+ Chapter 10 Definitions
Updated:
2013-06-17 17:06:20
Tags:
Network Naming
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Description:
Network Naming
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  1. Domain Name System
    A TCP/IP name resolution system that resolves host names to IP addresses.
  2. Windows Internet Name Service (WINS)
    A name resolution service that resolves NetBIOS names to IP addresses.
  3. DNS Root Servers
    The highest in the hierarchy of DNS servers running the Internet
  4. Top-Level Domain Servers
    A set of DNS servers-just below the root servers that handle the top-level domain names, such as .com, .org, .net, and so on
  5. Flat name space
    a naming convention that gives each device only one name that must be unique.  NetBios uses a flat name space.  TCP/IP's DNS uses a hierarchical name space.
  6. Hierarchial Name Space
    A naming scheme where the full name of each object includes its position within the hierarchy.  An example of a hierarchical name is www.totalseminars.com, which includes not only the host name, but also the domain name.  DNS uses a hierarchial name space scheme for fully qualified domain names (FQDNs)
  7. Domain
    A term used to describe a grouping of users, computers, and/or networks.  In Microsoft networking, a domain is a group of computers and users that shares a common account database and a common security policy.  For the Internet, a domain is a group of computers that shares a common element in their DNS hierarchical name.
  8. DNS Server
    A system that runs a special DNS server program.
  9. Zone
    is a container for a single domain that gets filled with records.
  10. Record
    is a line in the zone data that amps an FQDN to an IP address.
  11. FQDN (Fully Qualified Domain Name)
    The complete DNS name of a system, from its host name to the top-level domain name.
  12. Authoritative DNS server-Start of Authority (SOA)
    DNS servers that hold the IP addresses and names of systems for a particular domain or domains in special storage areas called forward lookup zones.
  13. Forward Lookup Zone
    The storage area in a DNS server to store the IP addresses and names of systems for a particular domain or domains.
  14. Canonical Name (CNAME)
    Less common type of DNS record that acts as a computer's alias.
  15. Primary Lookup Zone
    A forward lookup zone stored in a text file.
  16. Secondary Lookup Zone
    A backup lookup zone stored on another DNS server.
  17. Reverse Lookup Zone
    A DNS setting that resolves IP addresses to FQDNs.  In other words, it does exactly the reverse of what DNS normally accomplishes using forward lookup zones.
  18. Pointer Record (PTR)
    A record that points to canonical names.
  19. Common Internet File System (CIFS)
    The protocol that NetBIOS used to share folders and printers.  Still very common, even on UNIX/Linux Systems.
  20. Windows Internet Name Service (WINS)
    A name resolution service that resolves NetBIOS names to IP addresses.
  21. Fully Qualified Domain Name (FQDN)
    A complete DNS name, including the host name and all of its domains (in order).  Is written with the root on the far right, followed by the names of the domains (in order) added to the left of the root, and the host name on the far left.
  22. Internet Corporation for Assigned Names and Numbers (ICANN)
  23. ipconfig/flushdns
    eliminates any DNS caches on the local system.
  24. nslookup
    A once handy tool that advanced techs used to query the functions of DNS servers.  Most DNS servers now ignore all but the most basic nslookup queries.

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