World of Computer Networking Your CCNA start - Jitter

The video tutorial explains the use of the ping utility and the concept of standard deviation in network communication. It introduces jitter, a variable latency affecting packet transmission, and discusses its impact on communication, particularly in video and voice calls. The tutorial also covers how packet order can be disrupted due to jitter and how the TCP protocol helps reorder packets. Finally, it highlights the effects of jitter on communication quality and the role of lower-layer protocols in mitigating these effects.

What does the parameter 'Stdev' represent in network communication?

• Average packet delay

• Minimum packet delay

• Maximum packet delay

• Standard deviation of packet delays

Why is jitter an important parameter in network communication?

• It indicates the variation in packet delays.

• It calculates the total number of packets sent.

• It shows the maximum bandwidth available.

• It measures the average speed of packets.

In the example provided, what was the order of packet arrival at the receiver?

• 1, 3, 2

• 2, 3, 1

• 3, 1, 2

• 1, 2, 3

Which protocol is responsible for reordering packets that arrive out of order?

• FTP

• HTTP

• TCP

• UDP

What can high jitter lead to during video or voice calls?

• Improved video quality

• Faster data transmission

• Delays and broken communication

• Increased bandwidth

What happens to packets when jitter is very high?

• They increase in size.

• They travel faster.

• They may be lost or discarded.

• They are always delivered in order.

How can lower layer protocols help when jitter is high?

• By reducing bandwidth

• By recovering from acceptable jitter values

• By ignoring packet order

• By increasing jitter