World of Computer Networking Your CCNA start - Latency

The video tutorial discusses the concept of latency in networks, emphasizing its importance in real-time applications like video and audio transmission. Latency is defined as the one-way delay in data transfer between devices, influenced by various factors such as queuing, processing, transmission, and propagation delays. The tutorial explains how each layer of the TCP/IP model contributes to latency and provides detailed insights into different types of delays. It concludes with a brief mention of round trip time, highlighting the need to understand latency for optimizing network performance.

What is the primary layer of the TCP/IP model where latency is measured?

• Transport Layer

• Network Layer

• Application Layer

• Data Link Layer

Which type of delay occurs when packets wait in a queue before being transmitted?

• Processing Delay

• Queuing Delay

• Propagation Delay

• Transmission Delay

What factor can increase queuing delay in a network?

• Low-speed connection

• Fiber optic cables

• Copper cables

• High-speed connection

Which devices add processing delay by examining packet headers more deeply?

• Routers

• Network Adapters

• Switches

• Cables

What is the main cause of processing delay at the receiver's end?

• Encapsulation

• Decapsulation

• Transmission

• Propagation

What does transmission delay depend on?

• Number of routers

• Network protocol

• Packet size and bandwidth

• Type of cable

Which type of cable generally has a lower propagation delay?

• Twisted pair cable

• Coaxial cable

• Copper cable

• Fiber optic cable