World of Computer Networking Your CCNA start - Measuring Round-trip Time (RTT) Using the Ping Utility

The video tutorial explains how to measure Round Trip Time (RTT) using a terminal application on different operating systems like Mac, Windows, and Linux. It demonstrates the process of pinging Google's DNS server to obtain RTT values and discusses the factors affecting these values, such as network conditions and packet routes. The tutorial also covers how to interpret RTT statistics, including minimum, average, and maximum times, and provides guidance on troubleshooting high RTT values. Finally, it introduces the concept of jitter as another network parameter to be discussed further.

Which command is used to measure RTT to Google's DNS server?

• dig 8.8.8.8

• nslookup 8.8.8.8

• traceroute 8.8.8.8

• ping 8.8.8.8

What does a round trip time (RTT) of 17 milliseconds indicate?

• The time taken for a packet to travel to the server and back

• The time taken for a packet to be processed by the server

• The time taken for a packet to travel one way to the server

• The time taken for a packet to be lost in the network

Why might different packets have varying RTT values?

• Due to packet encryption

• Because of server processing time

• Because of different network conditions and routes

• Due to different packet sizes

What should you do if your RTT values exceed 100 milliseconds?

• Contact your Internet provider

• Restart your computer

• Use a different terminal application

• Change your DNS server

What is the next network parameter to be discussed after RTT?

• Packet loss

• Bandwidth

• Latency

• Jitter