DNS

(redirected from DNSc)
Also found in: Dictionary, Medical, Acronyms.

DNS

(fluid mechanics)
(computer science)

DNS

(1)

DNS

(2)
Distributed Name Service. See DECdns.

DNS

(Domain Name System) The Internet's system for converting alphabetic names into numeric IP addresses. For example, when a Web address (URL) is typed into a browser, DNS servers return the IP address of the Web server associated with that name. In this made-up example, the DNS converts the URL www.company.com into the IP address 204.0.8.51. Without DNS, you would have to type the series of four numbers and dots into your browser to retrieve the website, which you actually can do. See IP address.

A Hierarchy of Servers
The DNS system is a hierarchy of duplicated database servers worldwide that begin with the "root servers" for the top-level domains (.com, .net, .org, etc.). The root servers point to the "authoritative" servers located in ISPs, as well as in large companies, that turn the names into IP addresses; the process known as "name resolution." Using our www.company.com example, COMPANY.COM is the domain name, and WWW is the hostname. The domain name is the organization's identity on the Web, and the hostname is the name of the Web server within that domain (see WWW). See DNS records, zone file, reverse DNS, recursive DNS, DDNS, HOSTS file, mDNS, ping, root server and WINS.


Getting a Web Page
Converting the domain name (URL) in a Web browser into an IP address takes numerous queries. Along the way, there can be more name servers than are shown here.







Caching Speeds Up Delivery
If the ABC.COM Web address was previously requested by one of the ISP's customers, its IP address is cached (stored) in the DNS server and returns the IP address immediately. A user's computer also typically caches IP addresses, which can eliminate the DNS query all together if the address is already in the cache.
References in periodicals archive ?
The results of the survey will be co-presented June 10 at the Case Management Society of America's annual conference by Carter and study researcher Hussein Tahan, DNSc, RN, executive director of international health services for New York-Presbyterian Hospital.
Once I have had the opportunity to learn and grow in my current role, I plan to pursue a DNSc in Administration from the University of Tennessee, Memphis.
8 GPA required for this category only); Graduate/Doctoral Studies (registered nurses pursuing an MSN, DNSc or PhD with a minimum 3.
The UCSF School of Nursing must anticipate and respond to changing issues and trends and must influence policies and practices in health care," said Kathleen Dracup, RN, FNP, DNSc, dean and professor, School of Nursing, University of California, San Francisco.
At Methodist we are quite proud of our success in addressing the problem of retention, as evidenced by our significant three-year decline in registered nurse turnover," said Paula Spears, DNSc, RN, CNAA-BC, corporate director, Professional Practice and Advancement.
Knudtson, DNSc, NP, FAAN, a nurse practitioner from Irvine, California, and a frequent moderator of PCE symposia.
Methodist has already experienced success addressing the problem of retention, as evidenced by a significant three-year decline in registered nurse turnover," said Paula Spears, DNSc, RN, CNAA, BC, Corporate Director, Professional Practice and Advancement.
Knudtson, DNSc, NP, FAAN, a nurse practitioner from Santa Cruz, California, and a frequent moderator of PCE symposia.
The results were presented at HIMSS by Rebecca Rufo, RN, DNSc CCRN, Operations Director of the Resurrection Health Care eICU Program.
Gross, DNSc, RN, FAAN, professor and chair, Rush University Medical Center College of Nursing, Chicago; Tara Hulsey, PhD, MSN, associate dean and associate professor, Medical University of South Carolina College of Nursing, Charleston; Susan R.
Freida Hopkins Outlaw, DNSc, RN, Chief Nurse and Executive Director of Special Populations and Minority Services at the Tennessee Department of Mental Health and Developmental Disabilities (TDMHDD), was recently selected to join the Steering Committee for the National Quality Forum (NQF) project, evidence-based practices to treat substance-abuse disorders.
We are pleased that GNN has given this important work a home where valuable research and activities can continue with the support of national and international resources," stated Rhonda Anderson, RN, DNSc, FAAN, FACHE, executive director of the Excellence in Staffing Institute.