Shared by 
Unlock all 48 pages
Get it free by sharing your own notes, buy just this one, or become a member and unlock documents with your plan.
How to unlock this document
Choose the way that suits you. Each one gives you all 48 pages to read online and the PDF to download.
Share your notes, unlock for free
2 free unlocks for every 5 approved uploads
- Upload your own lecture notes, assignments, essays or past papers
- PDF, Word, PowerPoint and Excel files all work, and you can send many at once
- We check each upload; you get a notification when it is approved
- Spend a free unlock on this document or any other, and keep it for good
- Shared under your public username, never your email
Then upload your notes from your profile.
Buy this document
$45 one-time payment
- All 48 pages of this document, yours to keep
- Download the PDF and read it any time, also offline
- No subscription and nothing to cancel
- Find it again any time under My Profile → Library
You log in or create a free account first, then pay securely.
Become a member
Unlock documents from the whole library, which keeps growing
- Choose any documents you like, up to your plan’s unlocks
- Documents you unlock stay yours, even if you cancel later
- Your unlocks start again with every renewal
- Secure checkout by Dodo Payments
You log in or create a free account first, then pay securely.
Compare the plansAlready a member, or bought this before? Log in to open it
About this document
- Pages
- 48 pages
- Price
- $45 one-time, yours to keep
- Membership
- Included in every plan
- Format
- Subject
- Computer Science, Information Technology
This presentation covers the basics of DNS (Domain Name System) for application protocol designers. It explains what DNS is, its data model, key terms, and how DNS works. It is useful for anyone who wants to understand the basics of DNS.
What's inside
- What is DNS?
- DNS data model
- Key DNS terms
- DNS elements
- How DNS works
- DNS query example
Who it is for: For anyone who wants to understand the basics of DNS. (General)
Share with classmates: WhatsApp Telegram X LinkedIn Facebook
Summary
The Domain Name System (DNS) is a core Internet protocol. It maps names to addresses and stores information in a global data store. Students learn how DNS works and how to use it for new applications.
What is DNS?
DNS is essential for the Internet's operation. It provides name-to-address mapping and a global data store. Routing and DNS are the most important infrastructure protocols.
DNS Terms and Elements
DNS has specific terms and elements. Domain names, labels, and zones are key concepts. Resolvers and servers are the main elements. They handle queries and store data.
DNS Query Process
A DNS query involves several steps. It starts with a stub resolver asking a recursive resolver. The recursive resolver then communicates with various servers to find the answer.
DNS Record Types
DNS supports various record types. These include A, AAAA, MX, NS, and SRV records. Each type serves a specific purpose in DNS operations.
Key terms
- Domain name
- Any name represented in the DNS format, like foo.bar.example.
- DNS label
- A string between two dots in a domain name, like foo in foo.bar.
- DNS zone
- A set of names under the same authority, like example.com.
- Delegation
- Transfer of authority for a domain, like example.org from org.
- RRSet
- A set of resource records with the same name, type, and class.
- DNSSEC
- DNS Security Extensions, which protect DNS data with signatures.
Questions this document helps with
- How does DNS map names to addresses?
- What are the main elements of DNS?
- How does a DNS query work?
Summary written with AI from the document's text.
Ask the AI Teacher
Ask any question about this document or your course, and get a clear explanation.
Log in to ask Create a free account
Free accounts can ask 5 questions a day.