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--- protocols:dns [2026/07/03 13:21] – v1ctor
+++ protocols:dns [2026/07/03 13:53] (current) – [Resource Records] v1ctor
@@ Line 9: / Line 9: @@
 Finding authoritative DNS servers:
-<code>
+<code bash>
-dig NS apple.com +short   # the NS record identifies which servers are supposed to be authoritative;
+dig NS apple.com +short  # the NS record identifies which servers are supposed to be authoritative;
-                          # querying those servers directly and checking for aa confirms they actually are.
+                         # querying those servers directly and checking for aa confirms they actually are
 </code>
+===== Resource Records =====
+Resource record is a four-tuple - **(Name, Value, Type, TTL)**
+  * TTL determines when the resource should be removed from the cache
+  * Type **A**:
+    * ''Name'' is the hostname
+    * ''Value'' is the IP address