"Then I would check the ," Rahul added quickly. "If they can ping 8.8.8.8 (an IP) but not 'google.com' (a name), the DNS server is the problem."
Routing table – all known networks, next-hop IPs, outgoing interfaces, and route source (C, S, O, D, etc.). ccna interview questions and answers
"Certainly," he said. "There are seven layers. 7. This is the interface for the user, like your web browser. 6. Presentation: It handles data formatting, encryption, and compression. 5. Session: It establishes, maintains, and terminates sessions between devices. 4. Transport: This handles end-to-end delivery and reliability—TCP and UDP live here. 3. Network: This is for routing and logical addressing—IP addresses. 2. Data Link: This handles physical addressing—MAC addresses and error detection. "Then I would check the ," Rahul added quickly
Rahul closed his eyes for a second to visualize the mnemonic he had used: Please Do Not Throw Sausage Pizza Away . "There are seven layers
Rahul shook her hand firmly, the silver badge on her lanyard glinting under the office lights. He had walked in nervous, but he walked out a network engineer.
Domain Name System – converts hostnames to IPs. Steps: