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Lab – Observe DNS Resolution (Answers Version) Objectives Part 1: Observe the DNS-to-IP Address Conversion of a URL Part 2: Observe DNS Lookup Utilizing nslookup on a Website Part 3: Observe DNS Lookup Utilizing nslookup with Mail Servers Context / Scenario When you input a Uniform Resource Locator (URL) such as http://www.cisco.com into a web browser, the Domain Name System (DNS) is activated. The first portion of the URL specifies the employed protocol. Hypertext Transfer Protocol (HTTP), Hypertext Transfer Protocol over Secure Socket Layer (HTTPS), and File Transfer Protocol are frequent protocols (FTP).DNS utilises the second portion of the URL, www.cisco.com in this case. DNS converts the domain name (www.cisco.com) to an IP address so that the source host may communicate with the target server. In this lab, you will witness DNS in operation and utilise nslookup (name server lookup) to get further DNS information. Required Assets 1 PC (Windows with internet and command prompt acce...

Objectives Part 1: Network Design and Configuration Part 2: Use the Ping command for basic network testing  Part 3: Using Tracert and Traceroute for Fundamental Network Testing Part 4: Diagnose the Topology Context / Scenario Ping and traceroute are vital tools for evaluating TCP/IP network connections. Ping is a network management tool used to test the connectivity of an IP network device. This application also monitors the round-trip time for messages delivered from the sending host to the receiving machine. Ping is supported by Windows, Unix-like operating systems (OS), and the Cisco Internetwork Operating System (IOS). The traceroute programme is a network diagnostic tool that displays the path or route of IP packets and measures their transit delays. The tracert programme is accessible on Windows, while the traceroute utility is available on Unix-like operating systems and Cisco IOS. In this lab, the ping and traceroute commands are reviewed, and command parameters to alter co...